| 44 | | /* |
| 45 | | var script=document.createElement('script'); |
| 46 | | script.defer=false; |
| 47 | | script.type="text/javascript"; |
| 48 | | script.id=url; |
| 49 | | script.src=url; |
| 50 | | script.onload=onload; |
| 51 | | script.onerror=onfail; |
| 52 | | script.loadCheck=loadCheck; |
| 53 | | if(/MSIE/.test(navigator.userAgent)){script.onreadystatechange=this.checkReadyState;} |
| 54 | | document.getElementsByTagName('head')[0].appendChild(script); |
| 55 | | */ |
| 56 | | }, |
| 57 | | checkReadyState:function(){if(this.readyState=='loaded'){if(!this.loadCheck()){this.onerror();}else{this.onload();}}}};Proj4js.Proj=Proj4js.Class({readyToUse:false,title:null,projName:null,units:null,datum:null,x0:0,y0:0,initialize:function(srsCode){this.srsCodeInput=srsCode;if(srsCode.indexOf('urn:')==0){var urn=srsCode.split(':');if((urn[1]=='ogc'||urn[1]=='x-ogc')&&(urn[2]=='def')&&(urn[3]=='crs')){srsCode=urn[4]+':'+urn[urn.length-1];}}else if(srsCode.indexOf('http://')==0){var url=srsCode.split('#');if(url[0].match(/epsg.org/)){srsCode='EPSG:'+url[1];}else if(url[0].match(/RIG.xml/)){srsCode='IGNF:'+url[1];}} |
| 58 | | this.srsCode=srsCode.toUpperCase();if(this.srsCode.indexOf("EPSG")==0){this.srsCode=this.srsCode;this.srsAuth='epsg';this.srsProjNumber=this.srsCode.substring(5);}else if(this.srsCode.indexOf("IGNF")==0){this.srsCode=this.srsCode;this.srsAuth='IGNF';this.srsProjNumber=this.srsCode.substring(5);}else if(this.srsCode.indexOf("CRS")==0){this.srsCode=this.srsCode;this.srsAuth='CRS';this.srsProjNumber=this.srsCode.substring(4);}else{this.srsAuth='';this.srsProjNumber=this.srsCode;} |
| 59 | | this.loadProjDefinition();}, |
| 60 | | loadProjDefinition:function(){ |
| 61 | | if(Proj4js.defs[this.srsCode]){this.defsLoaded();return;} |
| 62 | | this.loadFromService(); |
| | 215 | }; |
| | 216 | |
| | 217 | /** |
| | 218 | * Class: ZOO.String |
| | 219 | * Contains convenience methods for string manipulation |
| | 220 | */ |
| | 221 | ZOO.String = { |
| | 222 | /** |
| | 223 | * Function: startsWith |
| | 224 | * Test whether a string starts with another string. |
| | 225 | * |
| | 226 | * Parameters: |
| | 227 | * str - {String} The string to test. |
| | 228 | * sub - {Sring} The substring to look for. |
| | 229 | * |
| | 230 | * Returns: |
| | 231 | * {Boolean} The first string starts with the second. |
| | 232 | */ |
| | 233 | startsWith: function(str, sub) { |
| | 234 | return (str.indexOf(sub) == 0); |
| | 235 | }, |
| | 236 | /** |
| | 237 | * Function: contains |
| | 238 | * Test whether a string contains another string. |
| | 239 | * |
| | 240 | * Parameters: |
| | 241 | * str - {String} The string to test. |
| | 242 | * sub - {String} The substring to look for. |
| | 243 | * |
| | 244 | * Returns: |
| | 245 | * {Boolean} The first string contains the second. |
| | 246 | */ |
| | 247 | contains: function(str, sub) { |
| | 248 | return (str.indexOf(sub) != -1); |
| | 249 | }, |
| | 250 | /** |
| | 251 | * Function: trim |
| | 252 | * Removes leading and trailing whitespace characters from a string. |
| | 253 | * |
| | 254 | * Parameters: |
| | 255 | * str - {String} The (potentially) space padded string. This string is not |
| | 256 | * modified. |
| | 257 | * |
| | 258 | * Returns: |
| | 259 | * {String} A trimmed version of the string with all leading and |
| | 260 | * trailing spaces removed. |
| | 261 | */ |
| | 262 | trim: function(str) { |
| | 263 | return str.replace(/^\s\s*/, '').replace(/\s\s*$/, ''); |
| | 264 | }, |
| | 265 | /** |
| | 266 | * Function: camelize |
| | 267 | * Camel-case a hyphenated string. |
| | 268 | * Ex. "chicken-head" becomes "chickenHead", and |
| | 269 | * "-chicken-head" becomes "ChickenHead". |
| | 270 | * |
| | 271 | * Parameters: |
| | 272 | * str - {String} The string to be camelized. The original is not modified. |
| | 273 | * |
| | 274 | * Returns: |
| | 275 | * {String} The string, camelized |
| | 276 | * |
| | 277 | */ |
| | 278 | camelize: function(str) { |
| | 279 | var oStringList = str.split('-'); |
| | 280 | var camelizedString = oStringList[0]; |
| | 281 | for (var i=1, len=oStringList.length; i<len; i++) { |
| | 282 | var s = oStringList[i]; |
| | 283 | camelizedString += s.charAt(0).toUpperCase() + s.substring(1); |
| | 284 | } |
| | 285 | return camelizedString; |
| | 286 | }, |
| | 287 | /** |
| | 288 | * Property: tokenRegEx |
| | 289 | * Used to find tokens in a string. |
| | 290 | * Examples: ${a}, ${a.b.c}, ${a-b}, ${5} |
| | 291 | */ |
| | 292 | tokenRegEx: /\$\{([\w.]+?)\}/g, |
| | 293 | /** |
| | 294 | * Property: numberRegEx |
| | 295 | * Used to test strings as numbers. |
| | 296 | */ |
| | 297 | numberRegEx: /^([+-]?)(?=\d|\.\d)\d*(\.\d*)?([Ee]([+-]?\d+))?$/, |
| | 298 | /** |
| | 299 | * Function: isNumeric |
| | 300 | * Determine whether a string contains only a numeric value. |
| | 301 | * |
| | 302 | * Examples: |
| | 303 | * (code) |
| | 304 | * ZOO.String.isNumeric("6.02e23") // true |
| | 305 | * ZOO.String.isNumeric("12 dozen") // false |
| | 306 | * ZOO.String.isNumeric("4") // true |
| | 307 | * ZOO.String.isNumeric(" 4 ") // false |
| | 308 | * (end) |
| | 309 | * |
| | 310 | * Returns: |
| | 311 | * {Boolean} String contains only a number. |
| | 312 | */ |
| | 313 | isNumeric: function(value) { |
| | 314 | return ZOO.String.numberRegEx.test(value); |
| | 315 | }, |
| | 316 | /** |
| | 317 | * Function: numericIf |
| | 318 | * Converts a string that appears to be a numeric value into a number. |
| | 319 | * |
| | 320 | * Returns |
| | 321 | * {Number|String} a Number if the passed value is a number, a String |
| | 322 | * otherwise. |
| | 323 | */ |
| | 324 | numericIf: function(value) { |
| | 325 | return ZOO.String.isNumeric(value) ? parseFloat(value) : value; |
| | 326 | } |
| | 327 | }; |
| | 328 | |
| | 329 | /** |
| | 330 | * Class: ZOO.Request |
| | 331 | * Contains convenience methods for working with ZOORequest which |
| | 332 | * replace XMLHttpRequest. Because of we are not in a browser |
| | 333 | * JavaScript environment, ZOO Project provides a method to |
| | 334 | * query servers which is based on curl : ZOORequest. |
| | 335 | */ |
| | 336 | ZOO.Request = { |
| | 337 | /** |
| | 338 | * Function: GET |
| | 339 | * Send an HTTP GET request. |
| | 340 | * |
| | 341 | * Parameters: |
| | 342 | * url - {String} The URL to request. |
| | 343 | * params - {Object} Params to add to the url |
| | 344 | * |
| | 345 | * Returns: |
| | 346 | * {String} Request result. |
| | 347 | */ |
| | 348 | Get: function(url,params) { |
| | 349 | var paramsArray = []; |
| | 350 | for (var key in params) { |
| | 351 | var value = params[key]; |
| | 352 | if ((value != null) && (typeof value != 'function')) { |
| | 353 | var encodedValue; |
| | 354 | if (typeof value == 'object' && value.constructor == Array) { |
| | 355 | /* value is an array; encode items and separate with "," */ |
| | 356 | var encodedItemArray = []; |
| | 357 | for (var itemIndex=0, len=value.length; itemIndex<len; itemIndex++) { |
| | 358 | encodedItemArray.push(encodeURIComponent(value[itemIndex])); |
| | 359 | } |
| | 360 | encodedValue = encodedItemArray.join(","); |
| | 361 | } |
| | 362 | else { |
| | 363 | /* value is a string; simply encode */ |
| | 364 | encodedValue = encodeURIComponent(value); |
| | 365 | } |
| | 366 | paramsArray.push(encodeURIComponent(key) + "=" + encodedValue); |
| | 367 | } |
| | 368 | } |
| | 369 | var paramString = paramsArray.join("&"); |
| | 370 | if(paramString.length > 0) { |
| | 371 | var separator = (url.indexOf('?') > -1) ? '&' : '?'; |
| | 372 | url += separator + paramString; |
| | 373 | } |
| | 374 | return ZOORequest('GET',url); |
| | 375 | }, |
| | 376 | /** |
| | 377 | * Function: POST |
| | 378 | * Send an HTTP POST request. |
| | 379 | * |
| | 380 | * Parameters: |
| | 381 | * url - {String} The URL to request. |
| | 382 | * body - {String} The request's body to send. |
| | 383 | * headers - {Object} A key-value object of headers to push to |
| | 384 | * the request's head |
| | 385 | * |
| | 386 | * Returns: |
| | 387 | * {String} Request result. |
| | 388 | */ |
| | 389 | Post: function(url,body,headers) { |
| | 390 | if(!(headers instanceof Array)) { |
| | 391 | var headersArray = []; |
| | 392 | for (var name in headers) { |
| | 393 | headersArray.push(name+': '+headers[name]); |
| | 394 | } |
| | 395 | headers = headersArray; |
| | 396 | } |
| | 397 | return ZOORequest('POST',url,body,headers); |
| | 398 | } |
| | 399 | }; |
| | 400 | |
| | 401 | /** |
| | 402 | * Class: ZOO.Bounds |
| | 403 | * Instances of this class represent bounding boxes. Data stored as left, |
| | 404 | * bottom, right, top floats. All values are initialized to null, |
| | 405 | * however, you should make sure you set them before using the bounds |
| | 406 | * for anything. |
| | 407 | */ |
| | 408 | ZOO.Bounds = ZOO.Class({ |
| | 409 | /** |
| | 410 | * Property: left |
| | 411 | * {Number} Minimum horizontal coordinate. |
| | 412 | */ |
| | 413 | left: null, |
| | 414 | /** |
| | 415 | * Property: bottom |
| | 416 | * {Number} Minimum vertical coordinate. |
| | 417 | */ |
| | 418 | bottom: null, |
| | 419 | /** |
| | 420 | * Property: right |
| | 421 | * {Number} Maximum horizontal coordinate. |
| | 422 | */ |
| | 423 | right: null, |
| | 424 | /** |
| | 425 | * Property: top |
| | 426 | * {Number} Maximum vertical coordinate. |
| | 427 | */ |
| | 428 | top: null, |
| | 429 | /** |
| | 430 | * Constructor: ZOO.Bounds |
| | 431 | * Construct a new bounds object. |
| | 432 | * |
| | 433 | * Parameters: |
| | 434 | * left - {Number} The left bounds of the box. Note that for width |
| | 435 | * calculations, this is assumed to be less than the right value. |
| | 436 | * bottom - {Number} The bottom bounds of the box. Note that for height |
| | 437 | * calculations, this is assumed to be more than the top value. |
| | 438 | * right - {Number} The right bounds. |
| | 439 | * top - {Number} The top bounds. |
| | 440 | */ |
| | 441 | initialize: function(left, bottom, right, top) { |
| | 442 | if (left != null) |
| | 443 | this.left = parseFloat(left); |
| | 444 | if (bottom != null) |
| | 445 | this.bottom = parseFloat(bottom); |
| | 446 | if (right != null) |
| | 447 | this.right = parseFloat(right); |
| | 448 | if (top != null) |
| | 449 | this.top = parseFloat(top); |
| | 450 | }, |
| | 451 | /** |
| | 452 | * Method: clone |
| | 453 | * Create a cloned instance of this bounds. |
| | 454 | * |
| | 455 | * Returns: |
| | 456 | * {<ZOO.Bounds>} A fresh copy of the bounds |
| | 457 | */ |
| | 458 | clone:function() { |
| | 459 | return new ZOO.Bounds(this.left, this.bottom, |
| | 460 | this.right, this.top); |
| | 461 | }, |
| | 462 | /** |
| | 463 | * Method: equals |
| | 464 | * Test a two bounds for equivalence. |
| | 465 | * |
| | 466 | * Parameters: |
| | 467 | * bounds - {<ZOO.Bounds>} |
| | 468 | * |
| | 469 | * Returns: |
| | 470 | * {Boolean} The passed-in bounds object has the same left, |
| | 471 | * right, top, bottom components as this. Note that if bounds |
| | 472 | * passed in is null, returns false. |
| | 473 | */ |
| | 474 | equals:function(bounds) { |
| | 475 | var equals = false; |
| | 476 | if (bounds != null) |
| | 477 | equals = ((this.left == bounds.left) && |
| | 478 | (this.right == bounds.right) && |
| | 479 | (this.top == bounds.top) && |
| | 480 | (this.bottom == bounds.bottom)); |
| | 481 | return equals; |
| | 482 | }, |
| | 483 | /** |
| | 484 | * Method: toString |
| | 485 | * |
| | 486 | * Returns: |
| | 487 | * {String} String representation of bounds object. |
| | 488 | * (ex.<i>"left-bottom=(5,42) right-top=(10,45)"</i>) |
| | 489 | */ |
| | 490 | toString:function() { |
| | 491 | return ( "left-bottom=(" + this.left + "," + this.bottom + ")" |
| | 492 | + " right-top=(" + this.right + "," + this.top + ")" ); |
| | 493 | }, |
| | 494 | /** |
| | 495 | * APIMethod: toArray |
| | 496 | * |
| | 497 | * Returns: |
| | 498 | * {Array} array of left, bottom, right, top |
| | 499 | */ |
| | 500 | toArray: function() { |
| | 501 | return [this.left, this.bottom, this.right, this.top]; |
| | 502 | }, |
| | 503 | /** |
| | 504 | * Method: toBBOX |
| | 505 | * |
| | 506 | * Parameters: |
| | 507 | * decimal - {Integer} How many significant digits in the bbox coords? |
| | 508 | * Default is 6 |
| | 509 | * |
| | 510 | * Returns: |
| | 511 | * {String} Simple String representation of bounds object. |
| | 512 | * (ex. <i>"5,42,10,45"</i>) |
| | 513 | */ |
| | 514 | toBBOX:function(decimal) { |
| | 515 | if (decimal== null) |
| | 516 | decimal = 6; |
| | 517 | var mult = Math.pow(10, decimal); |
| | 518 | var bbox = Math.round(this.left * mult) / mult + "," + |
| | 519 | Math.round(this.bottom * mult) / mult + "," + |
| | 520 | Math.round(this.right * mult) / mult + "," + |
| | 521 | Math.round(this.top * mult) / mult; |
| | 522 | return bbox; |
| | 523 | }, |
| | 524 | /** |
| | 525 | * Method: toGeometry |
| | 526 | * Create a new polygon geometry based on this bounds. |
| | 527 | * |
| | 528 | * Returns: |
| | 529 | * {<ZOO.Geometry.Polygon>} A new polygon with the coordinates |
| | 530 | * of this bounds. |
| | 531 | */ |
| | 532 | toGeometry: function() { |
| | 533 | return new ZOO.Geometry.Polygon([ |
| | 534 | new ZOO.Geometry.LinearRing([ |
| | 535 | new ZOO.Geometry.Point(this.left, this.bottom), |
| | 536 | new ZOO.Geometry.Point(this.right, this.bottom), |
| | 537 | new ZOO.Geometry.Point(this.right, this.top), |
| | 538 | new ZOO.Geometry.Point(this.left, this.top) |
| | 539 | ]) |
| | 540 | ]); |
| | 541 | }, |
| | 542 | /** |
| | 543 | * Method: getWidth |
| | 544 | * |
| | 545 | * Returns: |
| | 546 | * {Float} The width of the bounds |
| | 547 | */ |
| | 548 | getWidth:function() { |
| | 549 | return (this.right - this.left); |
| | 550 | }, |
| | 551 | /** |
| | 552 | * Method: getHeight |
| | 553 | * |
| | 554 | * Returns: |
| | 555 | * {Float} The height of the bounds (top minus bottom). |
| | 556 | */ |
| | 557 | getHeight:function() { |
| | 558 | return (this.top - this.bottom); |
| | 559 | }, |
| | 560 | /** |
| | 561 | * Method: add |
| | 562 | * |
| | 563 | * Parameters: |
| | 564 | * x - {Float} |
| | 565 | * y - {Float} |
| | 566 | * |
| | 567 | * Returns: |
| | 568 | * {<ZOO.Bounds>} A new bounds whose coordinates are the same as |
| | 569 | * this, but shifted by the passed-in x and y values. |
| | 570 | */ |
| | 571 | add:function(x, y) { |
| | 572 | if ( (x == null) || (y == null) ) |
| | 573 | return null; |
| | 574 | return new ZOO.Bounds(this.left + x, this.bottom + y, |
| | 575 | this.right + x, this.top + y); |
| | 576 | }, |
| | 577 | /** |
| | 578 | * Method: extend |
| | 579 | * Extend the bounds to include the point, lonlat, or bounds specified. |
| | 580 | * Note, this function assumes that left < right and bottom < top. |
| | 581 | * |
| | 582 | * Parameters: |
| | 583 | * object - {Object} Can be Point, or Bounds |
| | 584 | */ |
| | 585 | extend:function(object) { |
| | 586 | var bounds = null; |
| | 587 | if (object) { |
| | 588 | // clear cached center location |
| | 589 | switch(object.CLASS_NAME) { |
| | 590 | case "ZOO.Geometry.Point": |
| | 591 | bounds = new ZOO.Bounds(object.x, object.y, |
| | 592 | object.x, object.y); |
| | 593 | break; |
| | 594 | case "ZOO.Bounds": |
| | 595 | bounds = object; |
| | 596 | break; |
| | 597 | } |
| | 598 | if (bounds) { |
| | 599 | if ( (this.left == null) || (bounds.left < this.left)) |
| | 600 | this.left = bounds.left; |
| | 601 | if ( (this.bottom == null) || (bounds.bottom < this.bottom) ) |
| | 602 | this.bottom = bounds.bottom; |
| | 603 | if ( (this.right == null) || (bounds.right > this.right) ) |
| | 604 | this.right = bounds.right; |
| | 605 | if ( (this.top == null) || (bounds.top > this.top) ) |
| | 606 | this.top = bounds.top; |
| | 607 | } |
| | 608 | } |
| | 609 | }, |
| | 610 | /** |
| | 611 | * APIMethod: contains |
| | 612 | * |
| | 613 | * Parameters: |
| | 614 | * x - {Float} |
| | 615 | * y - {Float} |
| | 616 | * inclusive - {Boolean} Whether or not to include the border. |
| | 617 | * Default is true. |
| | 618 | * |
| | 619 | * Returns: |
| | 620 | * {Boolean} Whether or not the passed-in coordinates are within this |
| | 621 | * bounds. |
| | 622 | */ |
| | 623 | contains:function(x, y, inclusive) { |
| | 624 | //set default |
| | 625 | if (inclusive == null) |
| | 626 | inclusive = true; |
| | 627 | if (x == null || y == null) |
| | 628 | return false; |
| | 629 | x = parseFloat(x); |
| | 630 | y = parseFloat(y); |
| | 631 | |
| | 632 | var contains = false; |
| | 633 | if (inclusive) |
| | 634 | contains = ((x >= this.left) && (x <= this.right) && |
| | 635 | (y >= this.bottom) && (y <= this.top)); |
| | 636 | else |
| | 637 | contains = ((x > this.left) && (x < this.right) && |
| | 638 | (y > this.bottom) && (y < this.top)); |
| | 639 | return contains; |
| | 640 | }, |
| | 641 | /** |
| | 642 | * Method: intersectsBounds |
| | 643 | * Determine whether the target bounds intersects this bounds. Bounds are |
| | 644 | * considered intersecting if any of their edges intersect or if one |
| | 645 | * bounds contains the other. |
| | 646 | * |
| | 647 | * Parameters: |
| | 648 | * bounds - {<ZOO.Bounds>} The target bounds. |
| | 649 | * inclusive - {Boolean} Treat coincident borders as intersecting. Default |
| | 650 | * is true. If false, bounds that do not overlap but only touch at the |
| | 651 | * border will not be considered as intersecting. |
| | 652 | * |
| | 653 | * Returns: |
| | 654 | * {Boolean} The passed-in bounds object intersects this bounds. |
| | 655 | */ |
| | 656 | intersectsBounds:function(bounds, inclusive) { |
| | 657 | if (inclusive == null) |
| | 658 | inclusive = true; |
| | 659 | var intersects = false; |
| | 660 | var mightTouch = ( |
| | 661 | this.left == bounds.right || |
| | 662 | this.right == bounds.left || |
| | 663 | this.top == bounds.bottom || |
| | 664 | this.bottom == bounds.top |
| | 665 | ); |
| | 666 | if (inclusive || !mightTouch) { |
| | 667 | var inBottom = ( |
| | 668 | ((bounds.bottom >= this.bottom) && (bounds.bottom <= this.top)) || |
| | 669 | ((this.bottom >= bounds.bottom) && (this.bottom <= bounds.top)) |
| | 670 | ); |
| | 671 | var inTop = ( |
| | 672 | ((bounds.top >= this.bottom) && (bounds.top <= this.top)) || |
| | 673 | ((this.top > bounds.bottom) && (this.top < bounds.top)) |
| | 674 | ); |
| | 675 | var inLeft = ( |
| | 676 | ((bounds.left >= this.left) && (bounds.left <= this.right)) || |
| | 677 | ((this.left >= bounds.left) && (this.left <= bounds.right)) |
| | 678 | ); |
| | 679 | var inRight = ( |
| | 680 | ((bounds.right >= this.left) && (bounds.right <= this.right)) || |
| | 681 | ((this.right >= bounds.left) && (this.right <= bounds.right)) |
| | 682 | ); |
| | 683 | intersects = ((inBottom || inTop) && (inLeft || inRight)); |
| | 684 | } |
| | 685 | return intersects; |
| | 686 | }, |
| | 687 | /** |
| | 688 | * Method: containsBounds |
| | 689 | * Determine whether the target bounds is contained within this bounds. |
| | 690 | * |
| | 691 | * bounds - {<ZOO.Bounds>} The target bounds. |
| | 692 | * partial - {Boolean} If any of the target corners is within this bounds |
| | 693 | * consider the bounds contained. Default is false. If true, the |
| | 694 | * entire target bounds must be contained within this bounds. |
| | 695 | * inclusive - {Boolean} Treat shared edges as contained. Default is |
| | 696 | * true. |
| | 697 | * |
| | 698 | * Returns: |
| | 699 | * {Boolean} The passed-in bounds object is contained within this bounds. |
| | 700 | */ |
| | 701 | containsBounds:function(bounds, partial, inclusive) { |
| | 702 | if (partial == null) |
| | 703 | partial = false; |
| | 704 | if (inclusive == null) |
| | 705 | inclusive = true; |
| | 706 | var bottomLeft = this.contains(bounds.left, bounds.bottom, inclusive); |
| | 707 | var bottomRight = this.contains(bounds.right, bounds.bottom, inclusive); |
| | 708 | var topLeft = this.contains(bounds.left, bounds.top, inclusive); |
| | 709 | var topRight = this.contains(bounds.right, bounds.top, inclusive); |
| | 710 | return (partial) ? (bottomLeft || bottomRight || topLeft || topRight) |
| | 711 | : (bottomLeft && bottomRight && topLeft && topRight); |
| | 712 | }, |
| | 713 | CLASS_NAME: 'ZOO.Bounds' |
| | 714 | }); |
| | 715 | |
| | 716 | /** |
| | 717 | * Class: ZOO.Projection |
| | 718 | * Class for coordinate transforms between coordinate systems. |
| | 719 | * Depends on the zoo-proj4js library. zoo-proj4js library |
| | 720 | * is loaded by the ZOO Kernel with zoo-api. |
| | 721 | */ |
| | 722 | ZOO.Projection = ZOO.Class({ |
| | 723 | /** |
| | 724 | * Property: proj |
| | 725 | * {Object} Proj4js.Proj instance. |
| | 726 | */ |
| | 727 | proj: null, |
| | 728 | /** |
| | 729 | * Property: projCode |
| | 730 | * {String} |
| | 731 | */ |
| | 732 | projCode: null, |
| | 733 | /** |
| | 734 | * Constructor: ZOO.Projection |
| | 735 | * This class offers several methods for interacting with a wrapped |
| | 736 | * zoo-pro4js projection object. |
| | 737 | * |
| | 738 | * Parameters: |
| | 739 | * projCode - {String} A string identifying the Well Known Identifier for |
| | 740 | * the projection. |
| | 741 | * options - {Object} An optional object to set additional properties. |
| | 742 | * |
| | 743 | * Returns: |
| | 744 | * {<ZOO.Projection>} A projection object. |
| | 745 | */ |
| | 746 | initialize: function(projCode, options) { |
| | 747 | ZOO.extend(this, options); |
| | 748 | this.projCode = projCode; |
| | 749 | if (Proj4js) { |
| | 750 | this.proj = new Proj4js.Proj(projCode); |
| | 751 | } |
| | 752 | }, |
| | 753 | /** |
| | 754 | * Method: getCode |
| | 755 | * Get the string SRS code. |
| | 756 | * |
| | 757 | * Returns: |
| | 758 | * {String} The SRS code. |
| | 759 | */ |
| | 760 | getCode: function() { |
| | 761 | return this.proj ? this.proj.srsCode : this.projCode; |
| | 762 | }, |
| | 763 | /** |
| | 764 | * Method: getUnits |
| | 765 | * Get the units string for the projection -- returns null if |
| | 766 | * zoo-proj4js is not available. |
| | 767 | * |
| | 768 | * Returns: |
| | 769 | * {String} The units abbreviation. |
| | 770 | */ |
| | 771 | getUnits: function() { |
| | 772 | return this.proj ? this.proj.units : null; |
| | 773 | }, |
| | 774 | /** |
| | 775 | * Method: toString |
| | 776 | * Convert projection to string (getCode wrapper). |
| | 777 | * |
| | 778 | * Returns: |
| | 779 | * {String} The projection code. |
| | 780 | */ |
| | 781 | toString: function() { |
| | 782 | return this.getCode(); |
| | 783 | }, |
| | 784 | /** |
| | 785 | * Method: equals |
| | 786 | * Test equality of two projection instances. Determines equality based |
| | 787 | * soley on the projection code. |
| | 788 | * |
| | 789 | * Returns: |
| | 790 | * {Boolean} The two projections are equivalent. |
| | 791 | */ |
| | 792 | equals: function(projection) { |
| | 793 | if (projection && projection.getCode) |
| | 794 | return this.getCode() == projection.getCode(); |
| | 795 | else |
| | 796 | return false; |
| | 797 | }, |
| | 798 | /* Method: destroy |
| | 799 | * Destroy projection object. |
| | 800 | */ |
| | 801 | destroy: function() { |
| | 802 | this.proj = null; |
| | 803 | this.projCode = null; |
| | 804 | }, |
| | 805 | CLASS_NAME: 'ZOO.Projection' |
| | 806 | }); |
| | 807 | /** |
| | 808 | * Method: transform |
| | 809 | * Transform a point coordinate from one projection to another. Note that |
| | 810 | * the input point is transformed in place. |
| | 811 | * |
| | 812 | * Parameters: |
| | 813 | * point - {{ZOO.Geometry.Point> | Object} An object with x and y |
| | 814 | * properties representing coordinates in those dimensions. |
| | 815 | * sourceProj - {ZOO.Projection} Source map coordinate system |
| | 816 | * destProj - {ZOO.Projection} Destination map coordinate system |
| | 817 | * |
| | 818 | * Returns: |
| | 819 | * point - {object} A transformed coordinate. The original point is modified. |
| | 820 | */ |
| | 821 | ZOO.Projection.transform = function(point, source, dest) { |
| | 822 | if (source.proj && dest.proj) |
| | 823 | point = Proj4js.transform(source.proj, dest.proj, point); |
| | 824 | return point; |
| | 825 | }; |
| | 826 | |
| | 827 | /** |
| | 828 | * Class: ZOO.Format |
| | 829 | * Base class for format reading/writing a variety of formats. Subclasses |
| | 830 | * of ZOO.Format are expected to have read and write methods. |
| | 831 | */ |
| | 832 | ZOO.Format = ZOO.Class({ |
| | 833 | /** |
| | 834 | * Property: options |
| | 835 | * {Object} A reference to options passed to the constructor. |
| | 836 | */ |
| | 837 | options:null, |
| | 838 | /** |
| | 839 | * Property: externalProjection |
| | 840 | * {<ZOO.Projection>} When passed a externalProjection and |
| | 841 | * internalProjection, the format will reproject the geometries it |
| | 842 | * reads or writes. The externalProjection is the projection used by |
| | 843 | * the content which is passed into read or which comes out of write. |
| | 844 | * In order to reproject, a projection transformation function for the |
| | 845 | * specified projections must be available. This support is provided |
| | 846 | * via zoo-proj4js. |
| | 847 | */ |
| | 848 | externalProjection: null, |
| | 849 | /** |
| | 850 | * Property: internalProjection |
| | 851 | * {<ZOO.Projection>} When passed a externalProjection and |
| | 852 | * internalProjection, the format will reproject the geometries it |
| | 853 | * reads or writes. The internalProjection is the projection used by |
| | 854 | * the geometries which are returned by read or which are passed into |
| | 855 | * write. In order to reproject, a projection transformation function |
| | 856 | * for the specified projections must be available. This support is |
| | 857 | * provided via zoo-proj4js. |
| | 858 | */ |
| | 859 | internalProjection: null, |
| | 860 | /** |
| | 861 | * Property: data |
| | 862 | * {Object} When <keepData> is true, this is the parsed string sent to |
| | 863 | * <read>. |
| | 864 | */ |
| | 865 | data: null, |
| | 866 | /** |
| | 867 | * Property: keepData |
| | 868 | * {Object} Maintain a reference (<data>) to the most recently read data. |
| | 869 | * Default is false. |
| | 870 | */ |
| | 871 | keepData: false, |
| | 872 | /** |
| | 873 | * Constructor: ZOO.Format |
| | 874 | * Instances of this class are not useful. See one of the subclasses. |
| | 875 | * |
| | 876 | * Parameters: |
| | 877 | * options - {Object} An optional object with properties to set on the |
| | 878 | * format |
| | 879 | * |
| | 880 | * Valid options: |
| | 881 | * keepData - {Boolean} If true, upon <read>, the data property will be |
| | 882 | * set to the parsed object (e.g. the json or xml object). |
| | 883 | * |
| | 884 | * Returns: |
| | 885 | * An instance of ZOO.Format |
| | 886 | */ |
| | 887 | initialize: function(options) { |
| | 888 | ZOO.extend(this, options); |
| | 889 | this.options = options; |
| | 890 | }, |
| | 891 | /** |
| | 892 | * Method: destroy |
| | 893 | * Clean up. |
| | 894 | */ |
| | 895 | destroy: function() { |
| | 896 | }, |
| | 897 | /** |
| | 898 | * Method: read |
| | 899 | * Read data from a string, and return an object whose type depends on the |
| | 900 | * subclass. |
| | 901 | * |
| | 902 | * Parameters: |
| | 903 | * data - {string} Data to read/parse. |
| | 904 | * |
| | 905 | * Returns: |
| | 906 | * Depends on the subclass |
| | 907 | */ |
| | 908 | read: function(data) { |
| | 909 | }, |
| | 910 | /** |
| | 911 | * Method: write |
| | 912 | * Accept an object, and return a string. |
| | 913 | * |
| | 914 | * Parameters: |
| | 915 | * object - {Object} Object to be serialized |
| | 916 | * |
| | 917 | * Returns: |
| | 918 | * {String} A string representation of the object. |
| | 919 | */ |
| | 920 | write: function(data) { |
| | 921 | }, |
| | 922 | CLASS_NAME: 'ZOO.Format' |
| | 923 | }); |
| | 924 | /** |
| | 925 | * Class: ZOO.Format.WKT |
| | 926 | * Class for reading and writing Well-Known Text. Create a new instance |
| | 927 | * with the <ZOO.Format.WKT> constructor. |
| | 928 | * |
| | 929 | * Inherits from: |
| | 930 | * - <ZOO.Format> |
| | 931 | */ |
| | 932 | ZOO.Format.WKT = ZOO.Class(ZOO.Format, { |
| | 933 | /** |
| | 934 | * Constructor: ZOO.Format.WKT |
| | 935 | * Create a new parser for WKT |
| | 936 | * |
| | 937 | * Parameters: |
| | 938 | * options - {Object} An optional object whose properties will be set on |
| | 939 | * this instance |
| | 940 | * |
| | 941 | * Returns: |
| | 942 | * {<ZOO.Format.WKT>} A new WKT parser. |
| | 943 | */ |
| | 944 | initialize: function(options) { |
| | 945 | this.regExes = { |
| | 946 | 'typeStr': /^\s*(\w+)\s*\(\s*(.*)\s*\)\s*$/, |
| | 947 | 'spaces': /\s+/, |
| | 948 | 'parenComma': /\)\s*,\s*\(/, |
| | 949 | 'doubleParenComma': /\)\s*\)\s*,\s*\(\s*\(/, // can't use {2} here |
| | 950 | 'trimParens': /^\s*\(?(.*?)\)?\s*$/ |
| | 951 | }; |
| | 952 | ZOO.Format.prototype.initialize.apply(this, [options]); |
| | 953 | }, |
| | 954 | /** |
| | 955 | * Method: read |
| | 956 | * Deserialize a WKT string and return a vector feature or an |
| | 957 | * array of vector features. Supports WKT for POINT, |
| | 958 | * MULTIPOINT, LINESTRING, MULTILINESTRING, POLYGON, |
| | 959 | * MULTIPOLYGON, and GEOMETRYCOLLECTION. |
| | 960 | * |
| | 961 | * Parameters: |
| | 962 | * wkt - {String} A WKT string |
| | 963 | * |
| | 964 | * Returns: |
| | 965 | * {<ZOO.Feature.Vector>|Array} A feature or array of features for |
| | 966 | * GEOMETRYCOLLECTION WKT. |
| | 967 | */ |
| | 968 | read: function(wkt) { |
| | 969 | var features, type, str; |
| | 970 | var matches = this.regExes.typeStr.exec(wkt); |
| | 971 | if(matches) { |
| | 972 | type = matches[1].toLowerCase(); |
| | 973 | str = matches[2]; |
| | 974 | if(this.parse[type]) { |
| | 975 | features = this.parse[type].apply(this, [str]); |
| | 976 | } |
| | 977 | if (this.internalProjection && this.externalProjection) { |
| | 978 | if (features && |
| | 979 | features.CLASS_NAME == "ZOO.Feature") { |
| | 980 | features.geometry.transform(this.externalProjection, |
| | 981 | this.internalProjection); |
| | 982 | } else if (features && |
| | 983 | type != "geometrycollection" && |
| | 984 | typeof features == "object") { |
| | 985 | for (var i=0, len=features.length; i<len; i++) { |
| | 986 | var component = features[i]; |
| | 987 | component.geometry.transform(this.externalProjection, |
| | 988 | this.internalProjection); |
| | 989 | } |
| | 990 | } |
| | 991 | } |
| | 992 | } |
| | 993 | return features; |
| | 994 | }, |
| | 995 | /** |
| | 996 | * Method: write |
| | 997 | * Serialize a feature or array of features into a WKT string. |
| | 998 | * |
| | 999 | * Parameters: |
| | 1000 | * features - {<ZOO.Feature.Vector>|Array} A feature or array of |
| | 1001 | * features |
| | 1002 | * |
| | 1003 | * Returns: |
| | 1004 | * {String} The WKT string representation of the input geometries |
| | 1005 | */ |
| | 1006 | write: function(features) { |
| | 1007 | var collection, geometry, type, data, isCollection; |
| | 1008 | if(features.constructor == Array) { |
| | 1009 | collection = features; |
| | 1010 | isCollection = true; |
| | 1011 | } else { |
| | 1012 | collection = [features]; |
| | 1013 | isCollection = false; |
| | 1014 | } |
| | 1015 | var pieces = []; |
| | 1016 | if(isCollection) |
| | 1017 | pieces.push('GEOMETRYCOLLECTION('); |
| | 1018 | for(var i=0, len=collection.length; i<len; ++i) { |
| | 1019 | if(isCollection && i>0) |
| | 1020 | pieces.push(','); |
| | 1021 | geometry = collection[i].geometry; |
| | 1022 | type = geometry.CLASS_NAME.split('.')[2].toLowerCase(); |
| | 1023 | if(!this.extract[type]) |
| | 1024 | return null; |
| | 1025 | if (this.internalProjection && this.externalProjection) { |
| | 1026 | geometry = geometry.clone(); |
| | 1027 | geometry.transform(this.internalProjection, |
| | 1028 | this.externalProjection); |
| | 1029 | } |
| | 1030 | data = this.extract[type].apply(this, [geometry]); |
| | 1031 | pieces.push(type.toUpperCase() + '(' + data + ')'); |
| | 1032 | } |
| | 1033 | if(isCollection) |
| | 1034 | pieces.push(')'); |
| | 1035 | return pieces.join(''); |
| | 1036 | }, |
| | 1037 | /** |
| | 1038 | * Property: extract |
| | 1039 | * Object with properties corresponding to the geometry types. |
| | 1040 | * Property values are functions that do the actual data extraction. |
| | 1041 | */ |
| | 1042 | extract: { |
| | 1043 | /** |
| | 1044 | * Return a space delimited string of point coordinates. |
| | 1045 | * @param {<ZOO.Geometry.Point>} point |
| | 1046 | * @returns {String} A string of coordinates representing the point |
| | 1047 | */ |
| | 1048 | 'point': function(point) { |
| | 1049 | return point.x + ' ' + point.y; |
| | 1050 | }, |
| | 1051 | /** |
| | 1052 | * Return a comma delimited string of point coordinates from a multipoint. |
| | 1053 | * @param {<ZOO.Geometry.MultiPoint>} multipoint |
| | 1054 | * @returns {String} A string of point coordinate strings representing |
| | 1055 | * the multipoint |
| | 1056 | */ |
| | 1057 | 'multipoint': function(multipoint) { |
| | 1058 | var array = []; |
| | 1059 | for(var i=0, len=multipoint.components.length; i<len; ++i) { |
| | 1060 | array.push(this.extract.point.apply(this, [multipoint.components[i]])); |
| | 1061 | } |
| | 1062 | return array.join(','); |
| | 1063 | }, |
| | 1064 | /** |
| | 1065 | * Return a comma delimited string of point coordinates from a line. |
| | 1066 | * @param {<ZOO.Geometry.LineString>} linestring |
| | 1067 | * @returns {String} A string of point coordinate strings representing |
| | 1068 | * the linestring |
| | 1069 | */ |
| | 1070 | 'linestring': function(linestring) { |
| | 1071 | var array = []; |
| | 1072 | for(var i=0, len=linestring.components.length; i<len; ++i) { |
| | 1073 | array.push(this.extract.point.apply(this, [linestring.components[i]])); |
| | 1074 | } |
| | 1075 | return array.join(','); |
| | 1076 | }, |
| | 1077 | /** |
| | 1078 | * Return a comma delimited string of linestring strings from a multilinestring. |
| | 1079 | * @param {<ZOO.Geometry.MultiLineString>} multilinestring |
| | 1080 | * @returns {String} A string of of linestring strings representing |
| | 1081 | * the multilinestring |
| | 1082 | */ |
| | 1083 | 'multilinestring': function(multilinestring) { |
| | 1084 | var array = []; |
| | 1085 | for(var i=0, len=multilinestring.components.length; i<len; ++i) { |
| | 1086 | array.push('(' + |
| | 1087 | this.extract.linestring.apply(this, [multilinestring.components[i]]) + |
| | 1088 | ')'); |
| | 1089 | } |
| | 1090 | return array.join(','); |
| | 1091 | }, |
| | 1092 | /** |
| | 1093 | * Return a comma delimited string of linear ring arrays from a polygon. |
| | 1094 | * @param {<ZOO.Geometry.Polygon>} polygon |
| | 1095 | * @returns {String} An array of linear ring arrays representing the polygon |
| | 1096 | */ |
| | 1097 | 'polygon': function(polygon) { |
| | 1098 | var array = []; |
| | 1099 | for(var i=0, len=polygon.components.length; i<len; ++i) { |
| | 1100 | array.push('(' + |
| | 1101 | this.extract.linestring.apply(this, [polygon.components[i]]) + |
| | 1102 | ')'); |
| | 1103 | } |
| | 1104 | return array.join(','); |
| | 1105 | }, |
| | 1106 | /** |
| | 1107 | * Return an array of polygon arrays from a multipolygon. |
| | 1108 | * @param {<ZOO.Geometry.MultiPolygon>} multipolygon |
| | 1109 | * @returns {Array} An array of polygon arrays representing |
| | 1110 | * the multipolygon |
| | 1111 | */ |
| | 1112 | 'multipolygon': function(multipolygon) { |
| | 1113 | var array = []; |
| | 1114 | for(var i=0, len=multipolygon.components.length; i<len; ++i) { |
| | 1115 | array.push('(' + |
| | 1116 | this.extract.polygon.apply(this, [multipolygon.components[i]]) + |
| | 1117 | ')'); |
| | 1118 | } |
| | 1119 | return array.join(','); |
| | 1120 | } |
| | 1121 | }, |
| | 1122 | /** |
| | 1123 | * Property: parse |
| | 1124 | * Object with properties corresponding to the geometry types. |
| | 1125 | * Property values are functions that do the actual parsing. |
| | 1126 | */ |
| | 1127 | parse: { |
| | 1128 | /** |
| | 1129 | * Method: parse.point |
| | 1130 | * Return point feature given a point WKT fragment. |
| | 1131 | * |
| | 1132 | * Parameters: |
| | 1133 | * str - {String} A WKT fragment representing the point |
| | 1134 | * Returns: |
| | 1135 | * {<ZOO.Feature>} A point feature |
| | 1136 | */ |
| | 1137 | 'point': function(str) { |
| | 1138 | var coords = ZOO.String.trim(str).split(this.regExes.spaces); |
| | 1139 | return new ZOO.Feature( |
| | 1140 | new ZOO.Geometry.Point(coords[0], coords[1]) |
| | 1141 | ); |
| | 1142 | }, |
| | 1143 | /** |
| | 1144 | * Method: parse.multipoint |
| | 1145 | * Return a multipoint feature given a multipoint WKT fragment. |
| | 1146 | * |
| | 1147 | * Parameters: |
| | 1148 | * str - {String} A WKT fragment representing the multipoint |
| | 1149 | * |
| | 1150 | * Returns: |
| | 1151 | * {<ZOO.Feature>} A multipoint feature |
| | 1152 | */ |
| | 1153 | 'multipoint': function(str) { |
| | 1154 | var points = ZOO.String.trim(str).split(','); |
| | 1155 | var components = []; |
| | 1156 | for(var i=0, len=points.length; i<len; ++i) { |
| | 1157 | components.push(this.parse.point.apply(this, [points[i]]).geometry); |
| | 1158 | } |
| | 1159 | return new ZOO.Feature( |
| | 1160 | new ZOO.Geometry.MultiPoint(components) |
| | 1161 | ); |
| | 1162 | }, |
| | 1163 | /** |
| | 1164 | * Method: parse.linestring |
| | 1165 | * Return a linestring feature given a linestring WKT fragment. |
| | 1166 | * |
| | 1167 | * Parameters: |
| | 1168 | * str - {String} A WKT fragment representing the linestring |
| | 1169 | * |
| | 1170 | * Returns: |
| | 1171 | * {<ZOO.Feature>} A linestring feature |
| | 1172 | */ |
| | 1173 | 'linestring': function(str) { |
| | 1174 | var points = ZOO.String.trim(str).split(','); |
| | 1175 | var components = []; |
| | 1176 | for(var i=0, len=points.length; i<len; ++i) { |
| | 1177 | components.push(this.parse.point.apply(this, [points[i]]).geometry); |
| | 1178 | } |
| | 1179 | return new ZOO.Feature( |
| | 1180 | new ZOO.Geometry.LineString(components) |
| | 1181 | ); |
| | 1182 | }, |
| | 1183 | /** |
| | 1184 | * Method: parse.multilinestring |
| | 1185 | * Return a multilinestring feature given a multilinestring WKT fragment. |
| | 1186 | * |
| | 1187 | * Parameters: |
| | 1188 | * str - {String} A WKT fragment representing the multilinestring |
| | 1189 | * |
| | 1190 | * Returns: |
| | 1191 | * {<ZOO.Feature>} A multilinestring feature |
| | 1192 | */ |
| | 1193 | 'multilinestring': function(str) { |
| | 1194 | var line; |
| | 1195 | var lines = ZOO.String.trim(str).split(this.regExes.parenComma); |
| | 1196 | var components = []; |
| | 1197 | for(var i=0, len=lines.length; i<len; ++i) { |
| | 1198 | line = lines[i].replace(this.regExes.trimParens, '$1'); |
| | 1199 | components.push(this.parse.linestring.apply(this, [line]).geometry); |
| | 1200 | } |
| | 1201 | return new ZOO.Feature( |
| | 1202 | new ZOO.Geometry.MultiLineString(components) |
| | 1203 | ); |
| | 1204 | }, |
| | 1205 | /** |
| | 1206 | * Method: parse.polygon |
| | 1207 | * Return a polygon feature given a polygon WKT fragment. |
| | 1208 | * |
| | 1209 | * Parameters: |
| | 1210 | * str - {String} A WKT fragment representing the polygon |
| | 1211 | * |
| | 1212 | * Returns: |
| | 1213 | * {<ZOO.Feature>} A polygon feature |
| | 1214 | */ |
| | 1215 | 'polygon': function(str) { |
| | 1216 | var ring, linestring, linearring; |
| | 1217 | var rings = ZOO.String.trim(str).split(this.regExes.parenComma); |
| | 1218 | var components = []; |
| | 1219 | for(var i=0, len=rings.length; i<len; ++i) { |
| | 1220 | ring = rings[i].replace(this.regExes.trimParens, '$1'); |
| | 1221 | linestring = this.parse.linestring.apply(this, [ring]).geometry; |
| | 1222 | linearring = new ZOO.Geometry.LinearRing(linestring.components); |
| | 1223 | components.push(linearring); |
| | 1224 | } |
| | 1225 | return new ZOO.Feature( |
| | 1226 | new ZOO.Geometry.Polygon(components) |
| | 1227 | ); |
| | 1228 | }, |
| | 1229 | /** |
| | 1230 | * Method: parse.multipolygon |
| | 1231 | * Return a multipolygon feature given a multipolygon WKT fragment. |
| | 1232 | * |
| | 1233 | * Parameters: |
| | 1234 | * str - {String} A WKT fragment representing the multipolygon |
| | 1235 | * |
| | 1236 | * Returns: |
| | 1237 | * {<ZOO.Feature>} A multipolygon feature |
| | 1238 | */ |
| | 1239 | 'multipolygon': function(str) { |
| | 1240 | var polygon; |
| | 1241 | var polygons = ZOO.String.trim(str).split(this.regExes.doubleParenComma); |
| | 1242 | var components = []; |
| | 1243 | for(var i=0, len=polygons.length; i<len; ++i) { |
| | 1244 | polygon = polygons[i].replace(this.regExes.trimParens, '$1'); |
| | 1245 | components.push(this.parse.polygon.apply(this, [polygon]).geometry); |
| | 1246 | } |
| | 1247 | return new ZOO.Feature( |
| | 1248 | new ZOO.Geometry.MultiPolygon(components) |
| | 1249 | ); |
| | 1250 | }, |
| | 1251 | /** |
| | 1252 | * Method: parse.geometrycollection |
| | 1253 | * Return an array of features given a geometrycollection WKT fragment. |
| | 1254 | * |
| | 1255 | * Parameters: |
| | 1256 | * str - {String} A WKT fragment representing the geometrycollection |
| | 1257 | * |
| | 1258 | * Returns: |
| | 1259 | * {Array} An array of ZOO.Feature |
| | 1260 | */ |
| | 1261 | 'geometrycollection': function(str) { |
| | 1262 | // separate components of the collection with | |
| | 1263 | str = str.replace(/,\s*([A-Za-z])/g, '|$1'); |
| | 1264 | var wktArray = ZOO.String.trim(str).split('|'); |
| | 1265 | var components = []; |
| | 1266 | for(var i=0, len=wktArray.length; i<len; ++i) { |
| | 1267 | components.push(ZOO.Format.WKT.prototype.read.apply(this,[wktArray[i]])); |
| | 1268 | } |
| | 1269 | return components; |
| | 1270 | } |
| | 1271 | }, |
| | 1272 | CLASS_NAME: 'ZOO.Format.WKT' |
| | 1273 | }); |
| | 1274 | /** |
| | 1275 | * Class: ZOO.Format.JSON |
| | 1276 | * A parser to read/write JSON safely. Create a new instance with the |
| | 1277 | * <ZOO.Format.JSON> constructor. |
| | 1278 | * |
| | 1279 | * Inherits from: |
| | 1280 | * - <ZOO.Format> |
| | 1281 | */ |
| | 1282 | ZOO.Format.JSON = ZOO.Class(ZOO.Format, { |
| | 1283 | /** |
| | 1284 | * Property: indent |
| | 1285 | * {String} For "pretty" printing, the indent string will be used once for |
| | 1286 | * each indentation level. |
| | 1287 | */ |
| | 1288 | indent: " ", |
| | 1289 | /** |
| | 1290 | * Property: space |
| | 1291 | * {String} For "pretty" printing, the space string will be used after |
| | 1292 | * the ":" separating a name/value pair. |
| | 1293 | */ |
| | 1294 | space: " ", |
| | 1295 | /** |
| | 1296 | * Property: newline |
| | 1297 | * {String} For "pretty" printing, the newline string will be used at the |
| | 1298 | * end of each name/value pair or array item. |
| | 1299 | */ |
| | 1300 | newline: "\n", |
| | 1301 | /** |
| | 1302 | * Property: level |
| | 1303 | * {Integer} For "pretty" printing, this is incremented/decremented during |
| | 1304 | * serialization. |
| | 1305 | */ |
| | 1306 | level: 0, |
| | 1307 | /** |
| | 1308 | * Property: pretty |
| | 1309 | * {Boolean} Serialize with extra whitespace for structure. This is set |
| | 1310 | * by the <write> method. |
| | 1311 | */ |
| | 1312 | pretty: false, |
| | 1313 | /** |
| | 1314 | * Constructor: ZOO.Format.JSON |
| | 1315 | * Create a new parser for JSON. |
| | 1316 | * |
| | 1317 | * Parameters: |
| | 1318 | * options - {Object} An optional object whose properties will be set on |
| | 1319 | * this instance. |
| | 1320 | */ |
| | 1321 | initialize: function(options) { |
| | 1322 | ZOO.Format.prototype.initialize.apply(this, [options]); |
| | 1323 | }, |
| | 1324 | /** |
| | 1325 | * Method: read |
| | 1326 | * Deserialize a json string. |
| | 1327 | * |
| | 1328 | * Parameters: |
| | 1329 | * json - {String} A JSON string |
| | 1330 | * filter - {Function} A function which will be called for every key and |
| | 1331 | * value at every level of the final result. Each value will be |
| | 1332 | * replaced by the result of the filter function. This can be used to |
| | 1333 | * reform generic objects into instances of classes, or to transform |
| | 1334 | * date strings into Date objects. |
| | 1335 | * |
| | 1336 | * Returns: |
| | 1337 | * {Object} An object, array, string, or number . |
| | 1338 | */ |
| | 1339 | read: function(json, filter) { |
| | 1340 | /** |
| | 1341 | * Parsing happens in three stages. In the first stage, we run the text |
| | 1342 | * against a regular expression which looks for non-JSON |
| | 1343 | * characters. We are especially concerned with '()' and 'new' |
| | 1344 | * because they can cause invocation, and '=' because it can cause |
| | 1345 | * mutation. But just to be safe, we will reject all unexpected |
| | 1346 | * characters. |
| | 1347 | */ |
| | 1348 | try { |
| | 1349 | if (/^[\],:{}\s]*$/.test(json.replace(/\\["\\\/bfnrtu]/g, '@'). |
| | 1350 | replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'). |
| | 1351 | replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { |
| | 1352 | /** |
| | 1353 | * In the second stage we use the eval function to compile the |
| | 1354 | * text into a JavaScript structure. The '{' operator is |
| | 1355 | * subject to a syntactic ambiguity in JavaScript - it can |
| | 1356 | * begin a block or an object literal. We wrap the text in |
| | 1357 | * parens to eliminate the ambiguity. |
| | 1358 | */ |
| | 1359 | var object = eval('(' + json + ')'); |
| | 1360 | /** |
| | 1361 | * In the optional third stage, we recursively walk the new |
| | 1362 | * structure, passing each name/value pair to a filter |
| | 1363 | * function for possible transformation. |
| | 1364 | */ |
| | 1365 | if(typeof filter === 'function') { |
| | 1366 | function walk(k, v) { |
| | 1367 | if(v && typeof v === 'object') { |
| | 1368 | for(var i in v) { |
| | 1369 | if(v.hasOwnProperty(i)) { |
| | 1370 | v[i] = walk(i, v[i]); |
| | 1371 | } |
| | 1372 | } |
| | 1373 | } |
| | 1374 | return filter(k, v); |
| | 1375 | } |
| | 1376 | object = walk('', object); |
| | 1377 | } |
| | 1378 | if(this.keepData) { |
| | 1379 | this.data = object; |
| | 1380 | } |
| | 1381 | return object; |
| | 1382 | } |
| | 1383 | } catch(e) { |
| | 1384 | // Fall through if the regexp test fails. |
| | 1385 | } |
| | 1386 | return null; |
| | 1387 | }, |
| | 1388 | /** |
| | 1389 | * Method: write |
| | 1390 | * Serialize an object into a JSON string. |
| | 1391 | * |
| | 1392 | * Parameters: |
| | 1393 | * value - {String} The object, array, string, number, boolean or date |
| | 1394 | * to be serialized. |
| | 1395 | * pretty - {Boolean} Structure the output with newlines and indentation. |
| | 1396 | * Default is false. |
| | 1397 | * |
| | 1398 | * Returns: |
| | 1399 | * {String} The JSON string representation of the input value. |
| | 1400 | */ |
| | 1401 | write: function(value, pretty) { |
| | 1402 | this.pretty = !!pretty; |
| | 1403 | var json = null; |
| | 1404 | var type = typeof value; |
| | 1405 | if(this.serialize[type]) { |
| | 1406 | try { |
| | 1407 | json = this.serialize[type].apply(this, [value]); |
| | 1408 | } catch(err) { |
| | 1409 | //OpenLayers.Console.error("Trouble serializing: " + err); |
| | 1410 | } |
| | 1411 | } |
| | 1412 | return json; |
| | 1413 | }, |
| | 1414 | /** |
| | 1415 | * Method: writeIndent |
| | 1416 | * Output an indentation string depending on the indentation level. |
| | 1417 | * |
| | 1418 | * Returns: |
| | 1419 | * {String} An appropriate indentation string. |
| | 1420 | */ |
| | 1421 | writeIndent: function() { |
| | 1422 | var pieces = []; |
| | 1423 | if(this.pretty) { |
| | 1424 | for(var i=0; i<this.level; ++i) { |
| | 1425 | pieces.push(this.indent); |
| | 1426 | } |
| | 1427 | } |
| | 1428 | return pieces.join(''); |
| | 1429 | }, |
| | 1430 | /** |
| | 1431 | * Method: writeNewline |
| | 1432 | * Output a string representing a newline if in pretty printing mode. |
| | 1433 | * |
| | 1434 | * Returns: |
| | 1435 | * {String} A string representing a new line. |
| | 1436 | */ |
| | 1437 | writeNewline: function() { |
| | 1438 | return (this.pretty) ? this.newline : ''; |
| | 1439 | }, |
| | 1440 | /** |
| | 1441 | * Method: writeSpace |
| | 1442 | * Output a string representing a space if in pretty printing mode. |
| | 1443 | * |
| | 1444 | * Returns: |
| | 1445 | * {String} A space. |
| | 1446 | */ |
| | 1447 | writeSpace: function() { |
| | 1448 | return (this.pretty) ? this.space : ''; |
| | 1449 | }, |
| | 1450 | /** |
| | 1451 | * Property: serialize |
| | 1452 | * Object with properties corresponding to the serializable data types. |
| | 1453 | * Property values are functions that do the actual serializing. |
| | 1454 | */ |
| | 1455 | serialize: { |
| | 1456 | /** |
| | 1457 | * Method: serialize.object |
| | 1458 | * Transform an object into a JSON string. |
| | 1459 | * |
| | 1460 | * Parameters: |
| | 1461 | * object - {Object} The object to be serialized. |
| | 1462 | * |
| | 1463 | * Returns: |
| | 1464 | * {String} A JSON string representing the object. |
| | 1465 | */ |
| | 1466 | 'object': function(object) { |
| | 1467 | // three special objects that we want to treat differently |
| | 1468 | if(object == null) |
| | 1469 | return "null"; |
| | 1470 | if(object.constructor == Date) |
| | 1471 | return this.serialize.date.apply(this, [object]); |
| | 1472 | if(object.constructor == Array) |
| | 1473 | return this.serialize.array.apply(this, [object]); |
| | 1474 | var pieces = ['{']; |
| | 1475 | this.level += 1; |
| | 1476 | var key, keyJSON, valueJSON; |
| | 1477 | |
| | 1478 | var addComma = false; |
| | 1479 | for(key in object) { |
| | 1480 | if(object.hasOwnProperty(key)) { |
| | 1481 | // recursive calls need to allow for sub-classing |
| | 1482 | keyJSON = ZOO.Format.JSON.prototype.write.apply(this, |
| | 1483 | [key, this.pretty]); |
| | 1484 | valueJSON = ZOO.Format.JSON.prototype.write.apply(this, |
| | 1485 | [object[key], this.pretty]); |
| | 1486 | if(keyJSON != null && valueJSON != null) { |
| | 1487 | if(addComma) |
| | 1488 | pieces.push(','); |
| | 1489 | pieces.push(this.writeNewline(), this.writeIndent(), |
| | 1490 | keyJSON, ':', this.writeSpace(), valueJSON); |
| | 1491 | addComma = true; |
| | 1492 | } |
| | 1493 | } |
| | 1494 | } |
| | 1495 | this.level -= 1; |
| | 1496 | pieces.push(this.writeNewline(), this.writeIndent(), '}'); |
| | 1497 | return pieces.join(''); |
| | 1498 | }, |
| | 1499 | /** |
| | 1500 | * Method: serialize.array |
| | 1501 | * Transform an array into a JSON string. |
| | 1502 | * |
| | 1503 | * Parameters: |
| | 1504 | * array - {Array} The array to be serialized |
| | 1505 | * |
| | 1506 | * Returns: |
| | 1507 | * {String} A JSON string representing the array. |
| | 1508 | */ |
| | 1509 | 'array': function(array) { |
| | 1510 | var json; |
| | 1511 | var pieces = ['[']; |
| | 1512 | this.level += 1; |
| | 1513 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1514 | // recursive calls need to allow for sub-classing |
| | 1515 | json = ZOO.Format.JSON.prototype.write.apply(this, |
| | 1516 | [array[i], this.pretty]); |
| | 1517 | if(json != null) { |
| | 1518 | if(i > 0) |
| | 1519 | pieces.push(','); |
| | 1520 | pieces.push(this.writeNewline(), this.writeIndent(), json); |
| | 1521 | } |
| | 1522 | } |
| | 1523 | this.level -= 1; |
| | 1524 | pieces.push(this.writeNewline(), this.writeIndent(), ']'); |
| | 1525 | return pieces.join(''); |
| | 1526 | }, |
| | 1527 | /** |
| | 1528 | * Method: serialize.string |
| | 1529 | * Transform a string into a JSON string. |
| | 1530 | * |
| | 1531 | * Parameters: |
| | 1532 | * string - {String} The string to be serialized |
| | 1533 | * |
| | 1534 | * Returns: |
| | 1535 | * {String} A JSON string representing the string. |
| | 1536 | */ |
| | 1537 | 'string': function(string) { |
| | 1538 | var m = { |
| | 1539 | '\b': '\\b', |
| | 1540 | '\t': '\\t', |
| | 1541 | '\n': '\\n', |
| | 1542 | '\f': '\\f', |
| | 1543 | '\r': '\\r', |
| | 1544 | '"' : '\\"', |
| | 1545 | '\\': '\\\\' |
| | 1546 | }; |
| | 1547 | if(/["\\\x00-\x1f]/.test(string)) { |
| | 1548 | return '"' + string.replace(/([\x00-\x1f\\"])/g, function(a, b) { |
| | 1549 | var c = m[b]; |
| | 1550 | if(c) |
| | 1551 | return c; |
| | 1552 | c = b.charCodeAt(); |
| | 1553 | return '\\u00' + |
| | 1554 | Math.floor(c / 16).toString(16) + |
| | 1555 | (c % 16).toString(16); |
| | 1556 | }) + '"'; |
| | 1557 | } |
| | 1558 | return '"' + string + '"'; |
| | 1559 | }, |
| | 1560 | /** |
| | 1561 | * Method: serialize.number |
| | 1562 | * Transform a number into a JSON string. |
| | 1563 | * |
| | 1564 | * Parameters: |
| | 1565 | * number - {Number} The number to be serialized. |
| | 1566 | * |
| | 1567 | * Returns: |
| | 1568 | * {String} A JSON string representing the number. |
| | 1569 | */ |
| | 1570 | 'number': function(number) { |
| | 1571 | return isFinite(number) ? String(number) : "null"; |
| | 1572 | }, |
| | 1573 | /** |
| | 1574 | * Method: serialize.boolean |
| | 1575 | * Transform a boolean into a JSON string. |
| | 1576 | * |
| | 1577 | * Parameters: |
| | 1578 | * bool - {Boolean} The boolean to be serialized. |
| | 1579 | * |
| | 1580 | * Returns: |
| | 1581 | * {String} A JSON string representing the boolean. |
| | 1582 | */ |
| | 1583 | 'boolean': function(bool) { |
| | 1584 | return String(bool); |
| | 1585 | }, |
| | 1586 | /** |
| | 1587 | * Method: serialize.date |
| | 1588 | * Transform a date into a JSON string. |
| | 1589 | * |
| | 1590 | * Parameters: |
| | 1591 | * date - {Date} The date to be serialized. |
| | 1592 | * |
| | 1593 | * Returns: |
| | 1594 | * {String} A JSON string representing the date. |
| | 1595 | */ |
| | 1596 | 'date': function(date) { |
| | 1597 | function format(number) { |
| | 1598 | // Format integers to have at least two digits. |
| | 1599 | return (number < 10) ? '0' + number : number; |
| | 1600 | } |
| | 1601 | return '"' + date.getFullYear() + '-' + |
| | 1602 | format(date.getMonth() + 1) + '-' + |
| | 1603 | format(date.getDate()) + 'T' + |
| | 1604 | format(date.getHours()) + ':' + |
| | 1605 | format(date.getMinutes()) + ':' + |
| | 1606 | format(date.getSeconds()) + '"'; |
| | 1607 | } |
| | 1608 | }, |
| | 1609 | CLASS_NAME: 'ZOO.Format.JSON' |
| | 1610 | }); |
| | 1611 | /** |
| | 1612 | * Class: ZOO.Format.GeoJSON |
| | 1613 | * Read and write GeoJSON. Create a new parser with the |
| | 1614 | * <ZOO.Format.GeoJSON> constructor. |
| | 1615 | * |
| | 1616 | * Inherits from: |
| | 1617 | * - <ZOO.Format.JSON> |
| | 1618 | */ |
| | 1619 | ZOO.Format.GeoJSON = ZOO.Class(ZOO.Format.JSON, { |
| | 1620 | /** |
| | 1621 | * Constructor: ZOO.Format.GeoJSON |
| | 1622 | * Create a new parser for GeoJSON. |
| | 1623 | * |
| | 1624 | * Parameters: |
| | 1625 | * options - {Object} An optional object whose properties will be set on |
| | 1626 | * this instance. |
| | 1627 | */ |
| | 1628 | initialize: function(options) { |
| | 1629 | ZOO.Format.JSON.prototype.initialize.apply(this, [options]); |
| | 1630 | }, |
| | 1631 | /** |
| | 1632 | * Method: read |
| | 1633 | * Deserialize a GeoJSON string. |
| | 1634 | * |
| | 1635 | * Parameters: |
| | 1636 | * json - {String} A GeoJSON string |
| | 1637 | * type - {String} Optional string that determines the structure of |
| | 1638 | * the output. Supported values are "Geometry", "Feature", and |
| | 1639 | * "FeatureCollection". If absent or null, a default of |
| | 1640 | * "FeatureCollection" is assumed. |
| | 1641 | * filter - {Function} A function which will be called for every key and |
| | 1642 | * value at every level of the final result. Each value will be |
| | 1643 | * replaced by the result of the filter function. This can be used to |
| | 1644 | * reform generic objects into instances of classes, or to transform |
| | 1645 | * date strings into Date objects. |
| | 1646 | * |
| | 1647 | * Returns: |
| | 1648 | * {Object} The return depends on the value of the type argument. If type |
| | 1649 | * is "FeatureCollection" (the default), the return will be an array |
| | 1650 | * of <ZOO.Feature>. If type is "Geometry", the input json |
| | 1651 | * must represent a single geometry, and the return will be an |
| | 1652 | * <ZOO.Geometry>. If type is "Feature", the input json must |
| | 1653 | * represent a single feature, and the return will be an |
| | 1654 | * <ZOO.Feature>. |
| | 1655 | */ |
| | 1656 | read: function(json, type, filter) { |
| | 1657 | type = (type) ? type : "FeatureCollection"; |
| | 1658 | var results = null; |
| | 1659 | var obj = null; |
| | 1660 | if (typeof json == "string") |
| | 1661 | obj = ZOO.Format.JSON.prototype.read.apply(this,[json, filter]); |
| | 1662 | else |
| | 1663 | obj = json; |
| | 1664 | if(!obj) { |
| | 1665 | //ZOO.Console.error("Bad JSON: " + json); |
| | 1666 | } else if(typeof(obj.type) != "string") { |
| | 1667 | //ZOO.Console.error("Bad GeoJSON - no type: " + json); |
| | 1668 | } else if(this.isValidType(obj, type)) { |
| | 1669 | switch(type) { |
| | 1670 | case "Geometry": |
| | 1671 | try { |
| | 1672 | results = this.parseGeometry(obj); |
| | 1673 | } catch(err) { |
| | 1674 | //ZOO.Console.error(err); |
| | 1675 | } |
| | 1676 | break; |
| | 1677 | case "Feature": |
| | 1678 | try { |
| | 1679 | results = this.parseFeature(obj); |
| | 1680 | results.type = "Feature"; |
| | 1681 | } catch(err) { |
| | 1682 | //ZOO.Console.error(err); |
| | 1683 | } |
| | 1684 | break; |
| | 1685 | case "FeatureCollection": |
| | 1686 | // for type FeatureCollection, we allow input to be any type |
| | 1687 | results = []; |
| | 1688 | switch(obj.type) { |
| | 1689 | case "Feature": |
| | 1690 | try { |
| | 1691 | results.push(this.parseFeature(obj)); |
| | 1692 | } catch(err) { |
| | 1693 | results = null; |
| | 1694 | //ZOO.Console.error(err); |
| | 1695 | } |
| | 1696 | break; |
| | 1697 | case "FeatureCollection": |
| | 1698 | for(var i=0, len=obj.features.length; i<len; ++i) { |
| | 1699 | try { |
| | 1700 | results.push(this.parseFeature(obj.features[i])); |
| | 1701 | } catch(err) { |
| | 1702 | results = null; |
| | 1703 | //ZOO.Console.error(err); |
| | 1704 | } |
| | 1705 | } |
| | 1706 | break; |
| | 1707 | default: |
| | 1708 | try { |
| | 1709 | var geom = this.parseGeometry(obj); |
| | 1710 | results.push(new ZOO.Feature(geom)); |
| | 1711 | } catch(err) { |
| | 1712 | results = null; |
| | 1713 | //ZOO.Console.error(err); |
| | 1714 | } |
| | 1715 | } |
| | 1716 | break; |
| | 1717 | } |
| | 1718 | } |
| | 1719 | return results; |
| | 1720 | }, |
| | 1721 | /** |
| | 1722 | * Method: isValidType |
| | 1723 | * Check if a GeoJSON object is a valid representative of the given type. |
| | 1724 | * |
| | 1725 | * Returns: |
| | 1726 | * {Boolean} The object is valid GeoJSON object of the given type. |
| | 1727 | */ |
| | 1728 | isValidType: function(obj, type) { |
| | 1729 | var valid = false; |
| | 1730 | switch(type) { |
| | 1731 | case "Geometry": |
| | 1732 | if(ZOO.indexOf( |
| | 1733 | ["Point", "MultiPoint", "LineString", "MultiLineString", |
| | 1734 | "Polygon", "MultiPolygon", "Box", "GeometryCollection"], |
| | 1735 | obj.type) == -1) { |
| | 1736 | // unsupported geometry type |
| | 1737 | //ZOO.Console.error("Unsupported geometry type: " +obj.type); |
| | 1738 | } else { |
| | 1739 | valid = true; |
| | 1740 | } |
| | 1741 | break; |
| | 1742 | case "FeatureCollection": |
| | 1743 | // allow for any type to be converted to a feature collection |
| | 1744 | valid = true; |
| | 1745 | break; |
| | 1746 | default: |
| | 1747 | // for Feature types must match |
| | 1748 | if(obj.type == type) { |
| | 1749 | valid = true; |
| | 1750 | } else { |
| | 1751 | //ZOO.Console.error("Cannot convert types from " +obj.type + " to " + type); |
| | 1752 | } |
| | 1753 | } |
| | 1754 | return valid; |
| | 1755 | }, |
| | 1756 | /** |
| | 1757 | * Method: parseFeature |
| | 1758 | * Convert a feature object from GeoJSON into an |
| | 1759 | * <ZOO.Feature>. |
| | 1760 | * |
| | 1761 | * Parameters: |
| | 1762 | * obj - {Object} An object created from a GeoJSON object |
| | 1763 | * |
| | 1764 | * Returns: |
| | 1765 | * {<ZOO.Feature>} A feature. |
| | 1766 | */ |
| | 1767 | parseFeature: function(obj) { |
| | 1768 | var feature, geometry, attributes, bbox; |
| | 1769 | attributes = (obj.properties) ? obj.properties : {}; |
| | 1770 | bbox = (obj.geometry && obj.geometry.bbox) || obj.bbox; |
| | 1771 | try { |
| | 1772 | geometry = this.parseGeometry(obj.geometry); |
| | 1773 | } catch(err) { |
| | 1774 | // deal with bad geometries |
| | 1775 | throw err; |
| | 1776 | } |
| | 1777 | feature = new ZOO.Feature(geometry, attributes); |
| | 1778 | if(bbox) |
| | 1779 | feature.bounds = ZOO.Bounds.fromArray(bbox); |
| | 1780 | if(obj.id) |
| | 1781 | feature.fid = obj.id; |
| | 1782 | return feature; |
| | 1783 | }, |
| | 1784 | /** |
| | 1785 | * Method: parseGeometry |
| | 1786 | * Convert a geometry object from GeoJSON into an <ZOO.Geometry>. |
| | 1787 | * |
| | 1788 | * Parameters: |
| | 1789 | * obj - {Object} An object created from a GeoJSON object |
| | 1790 | * |
| | 1791 | * Returns: |
| | 1792 | * {<ZOO.Geometry>} A geometry. |
| | 1793 | */ |
| | 1794 | parseGeometry: function(obj) { |
| | 1795 | if (obj == null) |
| | 1796 | return null; |
| | 1797 | var geometry, collection = false; |
| | 1798 | if(obj.type == "GeometryCollection") { |
| | 1799 | if(!(obj.geometries instanceof Array)) { |
| | 1800 | throw "GeometryCollection must have geometries array: " + obj; |
| | 1801 | } |
| | 1802 | var numGeom = obj.geometries.length; |
| | 1803 | var components = new Array(numGeom); |
| | 1804 | for(var i=0; i<numGeom; ++i) { |
| | 1805 | components[i] = this.parseGeometry.apply( |
| | 1806 | this, [obj.geometries[i]] |
| | 1807 | ); |
| | 1808 | } |
| | 1809 | geometry = new ZOO.Geometry.Collection(components); |
| | 1810 | collection = true; |
| | 1811 | } else { |
| | 1812 | if(!(obj.coordinates instanceof Array)) { |
| | 1813 | throw "Geometry must have coordinates array: " + obj; |
| | 1814 | } |
| | 1815 | if(!this.parseCoords[obj.type.toLowerCase()]) { |
| | 1816 | throw "Unsupported geometry type: " + obj.type; |
| | 1817 | } |
| | 1818 | try { |
| | 1819 | geometry = this.parseCoords[obj.type.toLowerCase()].apply( |
| | 1820 | this, [obj.coordinates] |
| | 1821 | ); |
| | 1822 | } catch(err) { |
| | 1823 | // deal with bad coordinates |
| | 1824 | throw err; |
| | 1825 | } |
| | 1826 | } |
| | 1827 | // We don't reproject collections because the children are reprojected |
| | 1828 | // for us when they are created. |
| | 1829 | if (this.internalProjection && this.externalProjection && !collection) { |
| | 1830 | geometry.transform(this.externalProjection, |
| | 1831 | this.internalProjection); |
| | 1832 | } |
| | 1833 | return geometry; |
| | 1834 | }, |
| | 1835 | /** |
| | 1836 | * Property: parseCoords |
| | 1837 | * Object with properties corresponding to the GeoJSON geometry types. |
| | 1838 | * Property values are functions that do the actual parsing. |
| | 1839 | */ |
| | 1840 | parseCoords: { |
| | 1841 | /** |
| | 1842 | * Method: parseCoords.point |
| | 1843 | * Convert a coordinate array from GeoJSON into an |
| | 1844 | * <ZOO.Geometry.Point>. |
| | 1845 | * |
| | 1846 | * Parameters: |
| | 1847 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1848 | * |
| | 1849 | * Returns: |
| | 1850 | * {<ZOO.Geometry.Point>} A geometry. |
| | 1851 | */ |
| | 1852 | "point": function(array) { |
| | 1853 | if(array.length != 2) { |
| | 1854 | throw "Only 2D points are supported: " + array; |
| | 1855 | } |
| | 1856 | return new ZOO.Geometry.Point(array[0], array[1]); |
| | 1857 | }, |
| | 1858 | /** |
| | 1859 | * Method: parseCoords.multipoint |
| | 1860 | * Convert a coordinate array from GeoJSON into an |
| | 1861 | * <ZOO.Geometry.MultiPoint>. |
| | 1862 | * |
| | 1863 | * Parameters: |
| | 1864 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1865 | * |
| | 1866 | * Returns: |
| | 1867 | * {<ZOO.Geometry.MultiPoint>} A geometry. |
| | 1868 | */ |
| | 1869 | "multipoint": function(array) { |
| | 1870 | var points = []; |
| | 1871 | var p = null; |
| | 1872 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1873 | try { |
| | 1874 | p = this.parseCoords["point"].apply(this, [array[i]]); |
| | 1875 | } catch(err) { |
| | 1876 | throw err; |
| | 1877 | } |
| | 1878 | points.push(p); |
| | 1879 | } |
| | 1880 | return new ZOO.Geometry.MultiPoint(points); |
| | 1881 | }, |
| | 1882 | /** |
| | 1883 | * Method: parseCoords.linestring |
| | 1884 | * Convert a coordinate array from GeoJSON into an |
| | 1885 | * <ZOO.Geometry.LineString>. |
| | 1886 | * |
| | 1887 | * Parameters: |
| | 1888 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1889 | * |
| | 1890 | * Returns: |
| | 1891 | * {<ZOO.Geometry.LineString>} A geometry. |
| | 1892 | */ |
| | 1893 | "linestring": function(array) { |
| | 1894 | var points = []; |
| | 1895 | var p = null; |
| | 1896 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1897 | try { |
| | 1898 | p = this.parseCoords["point"].apply(this, [array[i]]); |
| | 1899 | } catch(err) { |
| | 1900 | throw err; |
| | 1901 | } |
| | 1902 | points.push(p); |
| | 1903 | } |
| | 1904 | return new ZOO.Geometry.LineString(points); |
| | 1905 | }, |
| | 1906 | /** |
| | 1907 | * Method: parseCoords.multilinestring |
| | 1908 | * Convert a coordinate array from GeoJSON into an |
| | 1909 | * <ZOO.Geometry.MultiLineString>. |
| | 1910 | * |
| | 1911 | * Parameters: |
| | 1912 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1913 | * |
| | 1914 | * Returns: |
| | 1915 | * {<ZOO.Geometry.MultiLineString>} A geometry. |
| | 1916 | */ |
| | 1917 | "multilinestring": function(array) { |
| | 1918 | var lines = []; |
| | 1919 | var l = null; |
| | 1920 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1921 | try { |
| | 1922 | l = this.parseCoords["linestring"].apply(this, [array[i]]); |
| | 1923 | } catch(err) { |
| | 1924 | throw err; |
| | 1925 | } |
| | 1926 | lines.push(l); |
| | 1927 | } |
| | 1928 | return new ZOO.Geometry.MultiLineString(lines); |
| | 1929 | }, |
| | 1930 | /** |
| | 1931 | * Method: parseCoords.polygon |
| | 1932 | * Convert a coordinate array from GeoJSON into an |
| | 1933 | * <ZOO.Geometry.Polygon>. |
| | 1934 | * |
| | 1935 | * Parameters: |
| | 1936 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1937 | * |
| | 1938 | * Returns: |
| | 1939 | * {<ZOO.Geometry.Polygon>} A geometry. |
| | 1940 | */ |
| | 1941 | "polygon": function(array) { |
| | 1942 | var rings = []; |
| | 1943 | var r, l; |
| | 1944 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1945 | try { |
| | 1946 | l = this.parseCoords["linestring"].apply(this, [array[i]]); |
| | 1947 | } catch(err) { |
| | 1948 | throw err; |
| | 1949 | } |
| | 1950 | r = new ZOO.Geometry.LinearRing(l.components); |
| | 1951 | rings.push(r); |
| | 1952 | } |
| | 1953 | return new ZOO.Geometry.Polygon(rings); |
| | 1954 | }, |
| | 1955 | /** |
| | 1956 | * Method: parseCoords.multipolygon |
| | 1957 | * Convert a coordinate array from GeoJSON into an |
| | 1958 | * <ZOO.Geometry.MultiPolygon>. |
| | 1959 | * |
| | 1960 | * Parameters: |
| | 1961 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1962 | * |
| | 1963 | * Returns: |
| | 1964 | * {<ZOO.Geometry.MultiPolygon>} A geometry. |
| | 1965 | */ |
| | 1966 | "multipolygon": function(array) { |
| | 1967 | var polys = []; |
| | 1968 | var p = null; |
| | 1969 | for(var i=0, len=array.length; i<len; ++i) { |
| | 1970 | try { |
| | 1971 | p = this.parseCoords["polygon"].apply(this, [array[i]]); |
| | 1972 | } catch(err) { |
| | 1973 | throw err; |
| | 1974 | } |
| | 1975 | polys.push(p); |
| | 1976 | } |
| | 1977 | return new ZOO.Geometry.MultiPolygon(polys); |
| | 1978 | }, |
| | 1979 | /** |
| | 1980 | * Method: parseCoords.box |
| | 1981 | * Convert a coordinate array from GeoJSON into an |
| | 1982 | * <ZOO.Geometry.Polygon>. |
| | 1983 | * |
| | 1984 | * Parameters: |
| | 1985 | * array - {Object} The coordinates array from the GeoJSON fragment. |
| | 1986 | * |
| | 1987 | * Returns: |
| | 1988 | * {<ZOO.Geometry.Polygon>} A geometry. |
| | 1989 | */ |
| | 1990 | "box": function(array) { |
| | 1991 | if(array.length != 2) { |
| | 1992 | throw "GeoJSON box coordinates must have 2 elements"; |
| | 1993 | } |
| | 1994 | return new ZOO.Geometry.Polygon([ |
| | 1995 | new ZOO.Geometry.LinearRing([ |
| | 1996 | new ZOO.Geometry.Point(array[0][0], array[0][1]), |
| | 1997 | new ZOO.Geometry.Point(array[1][0], array[0][1]), |
| | 1998 | new ZOO.Geometry.Point(array[1][0], array[1][1]), |
| | 1999 | new ZOO.Geometry.Point(array[0][0], array[1][1]), |
| | 2000 | new Z0O.Geometry.Point(array[0][0], array[0][1]) |
| | 2001 | ]) |
| | 2002 | ]); |
| | 2003 | } |
| | 2004 | }, |
| | 2005 | /** |
| | 2006 | * Method: write |
| | 2007 | * Serialize a feature, geometry, array of features into a GeoJSON string. |
| | 2008 | * |
| | 2009 | * Parameters: |
| | 2010 | * obj - {Object} An <ZOO.Feature>, <ZOO.Geometry>, |
| | 2011 | * or an array of features. |
| | 2012 | * pretty - {Boolean} Structure the output with newlines and indentation. |
| | 2013 | * Default is false. |
| | 2014 | * |
| | 2015 | * Returns: |
| | 2016 | * {String} The GeoJSON string representation of the input geometry, |
| | 2017 | * features, or array of features. |
| | 2018 | */ |
| | 2019 | write: function(obj, pretty) { |
| | 2020 | var geojson = { |
| | 2021 | "type": null |
| | 2022 | }; |
| | 2023 | if(obj instanceof Array) { |
| | 2024 | geojson.type = "FeatureCollection"; |
| | 2025 | var numFeatures = obj.length; |
| | 2026 | geojson.features = new Array(numFeatures); |
| | 2027 | for(var i=0; i<numFeatures; ++i) { |
| | 2028 | var element = obj[i]; |
| | 2029 | if(!element instanceof ZOO.Feature) { |
| | 2030 | var msg = "FeatureCollection only supports collections " + |
| | 2031 | "of features: " + element; |
| | 2032 | throw msg; |
| | 2033 | } |
| | 2034 | geojson.features[i] = this.extract.feature.apply(this, [element]); |
| | 2035 | } |
| | 2036 | } else if (obj.CLASS_NAME.indexOf("ZOO.Geometry") == 0) { |
| | 2037 | geojson = this.extract.geometry.apply(this, [obj]); |
| | 2038 | } else if (obj instanceof ZOO.Feature) { |
| | 2039 | geojson = this.extract.feature.apply(this, [obj]); |
| | 2040 | /* |
| | 2041 | if(obj.layer && obj.layer.projection) { |
| | 2042 | geojson.crs = this.createCRSObject(obj); |
| | 2043 | } |
| | 2044 | */ |
| | 2045 | } |
| | 2046 | return ZOO.Format.JSON.prototype.write.apply(this, |
| | 2047 | [geojson, pretty]); |
| | 2048 | }, |
| | 2049 | /** |
| | 2050 | * Method: createCRSObject |
| | 2051 | * Create the CRS object for an object. |
| | 2052 | * |
| | 2053 | * Parameters: |
| | 2054 | * object - {<ZOO.Feature>} |
| | 2055 | * |
| | 2056 | * Returns: |
| | 2057 | * {Object} An object which can be assigned to the crs property |
| | 2058 | * of a GeoJSON object. |
| | 2059 | */ |
| | 2060 | createCRSObject: function(object) { |
| | 2061 | //var proj = object.layer.projection.toString(); |
| | 2062 | var proj = object.projection.toString(); |
| | 2063 | var crs = {}; |
| | 2064 | if (proj.match(/epsg:/i)) { |
| | 2065 | var code = parseInt(proj.substring(proj.indexOf(":") + 1)); |
| | 2066 | if (code == 4326) { |
| | 2067 | crs = { |
| | 2068 | "type": "OGC", |
| | 2069 | "properties": { |
| | 2070 | "urn": "urn:ogc:def:crs:OGC:1.3:CRS84" |
| | 2071 | } |
| | 2072 | }; |
| | 2073 | } else { |
| | 2074 | crs = { |
| | 2075 | "type": "EPSG", |
| | 2076 | "properties": { |
| | 2077 | "code": code |
| | 2078 | } |
| | 2079 | }; |
| | 2080 | } |
| | 2081 | } |
| | 2082 | return crs; |
| | 2083 | }, |
| | 2084 | /** |
| | 2085 | * Property: extract |
| | 2086 | * Object with properties corresponding to the GeoJSON types. |
| | 2087 | * Property values are functions that do the actual value extraction. |
| | 2088 | */ |
| | 2089 | extract: { |
| | 2090 | /** |
| | 2091 | * Method: extract.feature |
| | 2092 | * Return a partial GeoJSON object representing a single feature. |
| | 2093 | * |
| | 2094 | * Parameters: |
| | 2095 | * feature - {<ZOO.Feature>} |
| | 2096 | * |
| | 2097 | * Returns: |
| | 2098 | * {Object} An object representing the point. |
| | 2099 | */ |
| | 2100 | 'feature': function(feature) { |
| | 2101 | var geom = this.extract.geometry.apply(this, [feature.geometry]); |
| | 2102 | return { |
| | 2103 | "type": "Feature", |
| | 2104 | "id": feature.fid == null ? feature.id : feature.fid, |
| | 2105 | "properties": feature.attributes, |
| | 2106 | "geometry": geom |
| | 2107 | }; |
| | 2108 | }, |
| | 2109 | /** |
| | 2110 | * Method: extract.geometry |
| | 2111 | * Return a GeoJSON object representing a single geometry. |
| | 2112 | * |
| | 2113 | * Parameters: |
| | 2114 | * geometry - {<ZOO.Geometry>} |
| | 2115 | * |
| | 2116 | * Returns: |
| | 2117 | * {Object} An object representing the geometry. |
| | 2118 | */ |
| | 2119 | 'geometry': function(geometry) { |
| | 2120 | if (geometry == null) |
| | 2121 | return null; |
| | 2122 | if (this.internalProjection && this.externalProjection) { |
| | 2123 | geometry = geometry.clone(); |
| | 2124 | geometry.transform(this.internalProjection, |
| | 2125 | this.externalProjection); |
| | 2126 | } |
| | 2127 | var geometryType = geometry.CLASS_NAME.split('.')[2]; |
| | 2128 | var data = this.extract[geometryType.toLowerCase()].apply(this, [geometry]); |
| | 2129 | var json; |
| | 2130 | if(geometryType == "Collection") |
| | 2131 | json = { |
| | 2132 | "type": "GeometryCollection", |
| | 2133 | "geometries": data |
| | 2134 | }; |
| | 2135 | else |
| | 2136 | json = { |
| | 2137 | "type": geometryType, |
| | 2138 | "coordinates": data |
| | 2139 | }; |
| | 2140 | return json; |
| | 2141 | }, |
| | 2142 | /** |
| | 2143 | * Method: extract.point |
| | 2144 | * Return an array of coordinates from a point. |
| | 2145 | * |
| | 2146 | * Parameters: |
| | 2147 | * point - {<ZOO.Geometry.Point>} |
| | 2148 | * |
| | 2149 | * Returns: |
| | 2150 | * {Array} An array of coordinates representing the point. |
| | 2151 | */ |
| | 2152 | 'point': function(point) { |
| | 2153 | return [point.x, point.y]; |
| | 2154 | }, |
| | 2155 | /** |
| | 2156 | * Method: extract.multipoint |
| | 2157 | * Return an array of coordinates from a multipoint. |
| | 2158 | * |
| | 2159 | * Parameters: |
| | 2160 | * multipoint - {<ZOO.Geometry.MultiPoint>} |
| | 2161 | * |
| | 2162 | * Returns: |
| | 2163 | * {Array} An array of point coordinate arrays representing |
| | 2164 | * the multipoint. |
| | 2165 | */ |
| | 2166 | 'multipoint': function(multipoint) { |
| | 2167 | var array = []; |
| | 2168 | for(var i=0, len=multipoint.components.length; i<len; ++i) { |
| | 2169 | array.push(this.extract.point.apply(this, [multipoint.components[i]])); |
| | 2170 | } |
| | 2171 | return array; |
| | 2172 | }, |
| | 2173 | /** |
| | 2174 | * Method: extract.linestring |
| | 2175 | * Return an array of coordinate arrays from a linestring. |
| | 2176 | * |
| | 2177 | * Parameters: |
| | 2178 | * linestring - {<ZOO.Geometry.LineString>} |
| | 2179 | * |
| | 2180 | * Returns: |
| | 2181 | * {Array} An array of coordinate arrays representing |
| | 2182 | * the linestring. |
| | 2183 | */ |
| | 2184 | 'linestring': function(linestring) { |
| | 2185 | var array = []; |
| | 2186 | for(var i=0, len=linestring.components.length; i<len; ++i) { |
| | 2187 | array.push(this.extract.point.apply(this, [linestring.components[i]])); |
| | 2188 | } |
| | 2189 | return array; |
| | 2190 | }, |
| | 2191 | /** |
| | 2192 | * Method: extract.multilinestring |
| | 2193 | * Return an array of linestring arrays from a linestring. |
| | 2194 | * |
| | 2195 | * Parameters: |
| | 2196 | * multilinestring - {<ZOO.Geometry.MultiLineString>} |
| | 2197 | * |
| | 2198 | * Returns: |
| | 2199 | * {Array} An array of linestring arrays representing |
| | 2200 | * the multilinestring. |
| | 2201 | */ |
| | 2202 | 'multilinestring': function(multilinestring) { |
| | 2203 | var array = []; |
| | 2204 | for(var i=0, len=multilinestring.components.length; i<len; ++i) { |
| | 2205 | array.push(this.extract.linestring.apply(this, [multilinestring.components[i]])); |
| | 2206 | } |
| | 2207 | return array; |
| | 2208 | }, |
| | 2209 | /** |
| | 2210 | * Method: extract.polygon |
| | 2211 | * Return an array of linear ring arrays from a polygon. |
| | 2212 | * |
| | 2213 | * Parameters: |
| | 2214 | * polygon - {<ZOO.Geometry.Polygon>} |
| | 2215 | * |
| | 2216 | * Returns: |
| | 2217 | * {Array} An array of linear ring arrays representing the polygon. |
| | 2218 | */ |
| | 2219 | 'polygon': function(polygon) { |
| | 2220 | var array = []; |
| | 2221 | for(var i=0, len=polygon.components.length; i<len; ++i) { |
| | 2222 | array.push(this.extract.linestring.apply(this, [polygon.components[i]])); |
| | 2223 | } |
| | 2224 | return array; |
| | 2225 | }, |
| | 2226 | /** |
| | 2227 | * Method: extract.multipolygon |
| | 2228 | * Return an array of polygon arrays from a multipolygon. |
| | 2229 | * |
| | 2230 | * Parameters: |
| | 2231 | * multipolygon - {<ZOO.Geometry.MultiPolygon>} |
| | 2232 | * |
| | 2233 | * Returns: |
| | 2234 | * {Array} An array of polygon arrays representing |
| | 2235 | * the multipolygon |
| | 2236 | */ |
| | 2237 | 'multipolygon': function(multipolygon) { |
| | 2238 | var array = []; |
| | 2239 | for(var i=0, len=multipolygon.components.length; i<len; ++i) { |
| | 2240 | array.push(this.extract.polygon.apply(this, [multipolygon.components[i]])); |
| | 2241 | } |
| | 2242 | return array; |
| | 2243 | }, |
| | 2244 | /** |
| | 2245 | * Method: extract.collection |
| | 2246 | * Return an array of geometries from a geometry collection. |
| | 2247 | * |
| | 2248 | * Parameters: |
| | 2249 | * collection - {<ZOO.Geometry.Collection>} |
| | 2250 | * |
| | 2251 | * Returns: |
| | 2252 | * {Array} An array of geometry objects representing the geometry |
| | 2253 | * collection. |
| | 2254 | */ |
| | 2255 | 'collection': function(collection) { |
| | 2256 | var len = collection.components.length; |
| | 2257 | var array = new Array(len); |
| | 2258 | for(var i=0; i<len; ++i) { |
| | 2259 | array[i] = this.extract.geometry.apply( |
| | 2260 | this, [collection.components[i]] |
| | 2261 | ); |
| | 2262 | } |
| | 2263 | return array; |
| | 2264 | } |
| | 2265 | }, |
| | 2266 | CLASS_NAME: 'ZOO.Format.GeoJSON' |
| | 2267 | }); |
| | 2268 | /** |
| | 2269 | * Class: ZOO.Format.KML |
| | 2270 | * Read/Write KML. Create a new instance with the <ZOO.Format.KML> |
| | 2271 | * constructor. |
| | 2272 | * |
| | 2273 | * Inherits from: |
| | 2274 | * - <ZOO.Format> |
| | 2275 | */ |
| | 2276 | ZOO.Format.KML = ZOO.Class(ZOO.Format, { |
| | 2277 | /** |
| | 2278 | * Property: kmlns |
| | 2279 | * {String} KML Namespace to use. Defaults to 2.2 namespace. |
| | 2280 | */ |
| | 2281 | kmlns: "http://www.opengis.net/kml/2.2", |
| | 2282 | /** |
| | 2283 | * Property: foldersName |
| | 2284 | * {String} Name of the folders. Default is "ZOO export". |
| | 2285 | * If set to null, no name element will be created. |
| | 2286 | */ |
| | 2287 | foldersName: "ZOO export", |
| | 2288 | /** |
| | 2289 | * Property: foldersDesc |
| | 2290 | * {String} Description of the folders. Default is "Exported on [date]." |
| | 2291 | * If set to null, no description element will be created. |
| | 2292 | */ |
| | 2293 | foldersDesc: "Created on " + new Date(), |
| | 2294 | /** |
| | 2295 | * Property: placemarksDesc |
| | 2296 | * {String} Name of the placemarks. Default is "No description available". |
| | 2297 | */ |
| | 2298 | placemarksDesc: "No description available", |
| | 2299 | /** |
| | 2300 | * Property: extractAttributes |
| | 2301 | * {Boolean} Extract attributes from KML. Default is true. |
| | 2302 | * Extracting styleUrls requires this to be set to true |
| | 2303 | */ |
| | 2304 | extractAttributes: true, |
| | 2305 | /** |
| | 2306 | * Constructor: ZOO.Format.KML |
| | 2307 | * Create a new parser for KML. |
| | 2308 | * |
| | 2309 | * Parameters: |
| | 2310 | * options - {Object} An optional object whose properties will be set on |
| | 2311 | * this instance. |
| | 2312 | */ |
| | 2313 | initialize: function(options) { |
| | 2314 | // compile regular expressions once instead of every time they are used |
| | 2315 | this.regExes = { |
| | 2316 | trimSpace: (/^\s*|\s*$/g), |
| | 2317 | removeSpace: (/\s*/g), |
| | 2318 | splitSpace: (/\s+/), |
| | 2319 | trimComma: (/\s*,\s*/g), |
| | 2320 | kmlColor: (/(\w{2})(\w{2})(\w{2})(\w{2})/), |
| | 2321 | kmlIconPalette: (/root:\/\/icons\/palette-(\d+)(\.\w+)/), |
| | 2322 | straightBracket: (/\$\[(.*?)\]/g) |
| | 2323 | }; |
| | 2324 | // KML coordinates are always in longlat WGS84 |
| | 2325 | this.externalProjection = new ZOO.Projection("EPSG:4326"); |
| | 2326 | ZOO.Format.prototype.initialize.apply(this, [options]); |
| | 2327 | }, |
| | 2328 | /** |
| | 2329 | * APIMethod: read |
| | 2330 | * Read data from a string, and return a list of features. |
| | 2331 | * |
| | 2332 | * Parameters: |
| | 2333 | * data - {String} data to read/parse. |
| | 2334 | * |
| | 2335 | * Returns: |
| | 2336 | * {Array(<ZOO.Feature>)} List of features. |
| | 2337 | */ |
| | 2338 | read: function(data) { |
| | 2339 | this.features = []; |
| | 2340 | data = data.replace(/^<\?xml\s+version\s*=\s*(["'])[^\1]+\1[^?]*\?>/, ""); |
| | 2341 | data = new XML(data); |
| | 2342 | var placemarks = data..*::Placemark; |
| | 2343 | this.parseFeatures(placemarks); |
| | 2344 | return this.features; |
| | 2345 | }, |
| | 2346 | /** |
| | 2347 | * Method: parseFeatures |
| | 2348 | * Loop through all Placemark nodes and parse them. |
| | 2349 | * Will create a list of features |
| | 2350 | * |
| | 2351 | * Parameters: |
| | 2352 | * nodes - {Array} of {E4XElement} data to read/parse. |
| | 2353 | * options - {Object} Hash of options |
| | 2354 | * |
| | 2355 | */ |
| | 2356 | parseFeatures: function(nodes) { |
| | 2357 | var features = new Array(nodes.length()); |
| | 2358 | for(var i=0, len=nodes.length(); i<len; i++) { |
| | 2359 | var featureNode = nodes[i]; |
| | 2360 | var feature = this.parseFeature.apply(this,[featureNode]) ; |
| | 2361 | features[i] = feature; |
| | 2362 | } |
| | 2363 | this.features = this.features.concat(features); |
| | 2364 | }, |
| | 2365 | /** |
| | 2366 | * Method: parseFeature |
| | 2367 | * This function is the core of the KML parsing code in ZOO. |
| | 2368 | * It creates the geometries that are then attached to the returned |
| | 2369 | * feature, and calls parseAttributes() to get attribute data out. |
| | 2370 | * |
| | 2371 | * Parameters: |
| | 2372 | * node - {E4XElement} |
| | 2373 | * |
| | 2374 | * Returns: |
| | 2375 | * {<ZOO.Feature>} A vector feature. |
| | 2376 | */ |
| | 2377 | parseFeature: function(node) { |
| | 2378 | // only accept one geometry per feature - look for highest "order" |
| | 2379 | var order = ["MultiGeometry", "Polygon", "LineString", "Point"]; |
| | 2380 | var type, nodeList, geometry, parser; |
| | 2381 | for(var i=0, len=order.length; i<len; ++i) { |
| | 2382 | type = order[i]; |
| | 2383 | nodeList = node.descendants(QName(null,type)); |
| | 2384 | if (nodeList.length()> 0) { |
| | 2385 | var parser = this.parseGeometry[type.toLowerCase()]; |
| | 2386 | if(parser) { |
| | 2387 | geometry = parser.apply(this, [nodeList[0]]); |
| | 2388 | if (this.internalProjection && this.externalProjection) { |
| | 2389 | geometry.transform(this.externalProjection, |
| | 2390 | this.internalProjection); |
| | 2391 | } |
| | 2392 | } |
| | 2393 | // stop looking for different geometry types |
| | 2394 | break; |
| | 2395 | } |
| | 2396 | } |
| | 2397 | // construct feature (optionally with attributes) |
| | 2398 | var attributes; |
| | 2399 | if(this.extractAttributes) { |
| | 2400 | attributes = this.parseAttributes(node); |
| | 2401 | } |
| | 2402 | var feature = new ZOO.Feature(geometry, attributes); |
| | 2403 | var fid = node.@id || node.@name; |
| | 2404 | if(fid != null) |
| | 2405 | feature.fid = fid; |
| | 2406 | return feature; |
| | 2407 | }, |
| | 2408 | /** |
| | 2409 | * Property: parseGeometry |
| | 2410 | * Properties of this object are the functions that parse geometries based |
| | 2411 | * on their type. |
| | 2412 | */ |
| | 2413 | parseGeometry: { |
| | 2414 | /** |
| | 2415 | * Method: parseGeometry.point |
| | 2416 | * Given a KML node representing a point geometry, create a ZOO |
| | 2417 | * point geometry. |
| | 2418 | * |
| | 2419 | * Parameters: |
| | 2420 | * node - {E4XElement} A KML Point node. |
| | 2421 | * |
| | 2422 | * Returns: |
| | 2423 | * {<ZOO.Geometry.Point>} A point geometry. |
| | 2424 | */ |
| | 2425 | 'point': function(node) { |
| | 2426 | var coordString = node.*::coordinates.toString(); |
| | 2427 | coordString = coordString.replace(this.regExes.removeSpace, ""); |
| | 2428 | coords = coordString.split(","); |
| | 2429 | var point = null; |
| | 2430 | if(coords.length > 1) { |
| | 2431 | // preserve third dimension |
| | 2432 | if(coords.length == 2) { |
| | 2433 | coords[2] = null; |
| | 2434 | } |
| | 2435 | point = new ZOO.Geometry.Point(coords[0], coords[1], coords[2]); |
| | 2436 | } |
| | 2437 | return point; |
| | 2438 | }, |
| | 2439 | /** |
| | 2440 | * Method: parseGeometry.linestring |
| | 2441 | * Given a KML node representing a linestring geometry, create a |
| | 2442 | * ZOO linestring geometry. |
| | 2443 | * |
| | 2444 | * Parameters: |
| | 2445 | * node - {E4XElement} A KML LineString node. |
| | 2446 | * |
| | 2447 | * Returns: |
| | 2448 | * {<ZOO.Geometry.LineString>} A linestring geometry. |
| | 2449 | */ |
| | 2450 | 'linestring': function(node, ring) { |
| | 2451 | var line = null; |
| | 2452 | var coordString = node.*::coordinates.toString(); |
| | 2453 | coordString = coordString.replace(this.regExes.trimSpace, |
| | 2454 | ""); |
| | 2455 | coordString = coordString.replace(this.regExes.trimComma, |
| | 2456 | ","); |
| | 2457 | var pointList = coordString.split(this.regExes.splitSpace); |
| | 2458 | var numPoints = pointList.length; |
| | 2459 | var points = new Array(numPoints); |
| | 2460 | var coords, numCoords; |
| | 2461 | for(var i=0; i<numPoints; ++i) { |
| | 2462 | coords = pointList[i].split(","); |
| | 2463 | numCoords = coords.length; |
| | 2464 | if(numCoords > 1) { |
| | 2465 | if(coords.length == 2) { |
| | 2466 | coords[2] = null; |
| | 2467 | } |
| | 2468 | points[i] = new ZOO.Geometry.Point(coords[0], |
| | 2469 | coords[1], |
| | 2470 | coords[2]); |
| | 2471 | } |
| | 2472 | } |
| | 2473 | if(numPoints) { |
| | 2474 | if(ring) { |
| | 2475 | line = new ZOO.Geometry.LinearRing(points); |
| | 2476 | } else { |
| | 2477 | line = new ZOO.Geometry.LineString(points); |
| | 2478 | } |
| | 2479 | } else { |
| | 2480 | throw "Bad LineString coordinates: " + coordString; |
| | 2481 | } |
| | 2482 | return line; |
| | 2483 | }, |
| | 2484 | /** |
| | 2485 | * Method: parseGeometry.polygon |
| | 2486 | * Given a KML node representing a polygon geometry, create a |
| | 2487 | * ZOO polygon geometry. |
| | 2488 | * |
| | 2489 | * Parameters: |
| | 2490 | * node - {E4XElement} A KML Polygon node. |
| | 2491 | * |
| | 2492 | * Returns: |
| | 2493 | * {<ZOO.Geometry.Polygon>} A polygon geometry. |
| | 2494 | */ |
| | 2495 | 'polygon': function(node) { |
| | 2496 | var nodeList = node..*::LinearRing; |
| | 2497 | var numRings = nodeList.length(); |
| | 2498 | var components = new Array(numRings); |
| | 2499 | if(numRings > 0) { |
| | 2500 | // this assumes exterior ring first, inner rings after |
| | 2501 | var ring; |
| | 2502 | for(var i=0, len=nodeList.length(); i<len; ++i) { |
| | 2503 | ring = this.parseGeometry.linestring.apply(this, |
| | 2504 | [nodeList[i], true]); |
| | 2505 | if(ring) { |
| | 2506 | components[i] = ring; |
| | 2507 | } else { |
| | 2508 | throw "Bad LinearRing geometry: " + i; |
| | 2509 | } |
| | 2510 | } |
| | 2511 | } |
| | 2512 | return new ZOO.Geometry.Polygon(components); |
| | 2513 | }, |
| | 2514 | /** |
| | 2515 | * Method: parseGeometry.multigeometry |
| | 2516 | * Given a KML node representing a multigeometry, create a |
| | 2517 | * ZOO geometry collection. |
| | 2518 | * |
| | 2519 | * Parameters: |
| | 2520 | * node - {E4XElement} A KML MultiGeometry node. |
| | 2521 | * |
| | 2522 | * Returns: |
| | 2523 | * {<ZOO.Geometry.Collection>} A geometry collection. |
| | 2524 | */ |
| | 2525 | 'multigeometry': function(node) { |
| | 2526 | var child, parser; |
| | 2527 | var parts = []; |
| | 2528 | var children = node.*::*; |
| | 2529 | for(var i=0, len=children.length(); i<len; ++i ) { |
| | 2530 | child = children[i]; |
| | 2531 | var type = child.localName(); |
| | 2532 | var parser = this.parseGeometry[type.toLowerCase()]; |
| | 2533 | if(parser) { |
| | 2534 | parts.push(parser.apply(this, [child])); |
| | 2535 | } |
| | 2536 | } |
| | 2537 | return new ZOO.Geometry.Collection(parts); |
| | 2538 | } |
| | 2539 | }, |
| | 2540 | /** |
| | 2541 | * Method: parseAttributes |
| | 2542 | * |
| | 2543 | * Parameters: |
| | 2544 | * node - {E4XElement} |
| | 2545 | * |
| | 2546 | * Returns: |
| | 2547 | * {Object} An attributes object. |
| | 2548 | */ |
| | 2549 | parseAttributes: function(node) { |
| | 2550 | var attributes = {}; |
| | 2551 | var edNodes = node.*::ExtendedData; |
| | 2552 | if (edNodes.length() > 0) { |
| | 2553 | attributes = this.parseExtendedData(edNodes[0]) |
| | 2554 | } |
| | 2555 | var child, grandchildren; |
| | 2556 | var children = node.*::*; |
| | 2557 | for(var i=0, len=children.length(); i<len; ++i) { |
| | 2558 | child = children[i]; |
| | 2559 | grandchildren = child..*::*; |
| | 2560 | if(grandchildren.length() == 1) { |
| | 2561 | var name = child.localName(); |
| | 2562 | var value = child.toString(); |
| | 2563 | if (value) { |
| | 2564 | value = value.replace(this.regExes.trimSpace, ""); |
| | 2565 | attributes[name] = value; |
| | 2566 | } |
| | 2567 | } |
| | 2568 | } |
| | 2569 | return attributes; |
| | 2570 | }, |
| | 2571 | /** |
| | 2572 | * Method: parseExtendedData |
| | 2573 | * Parse ExtendedData from KML. Limited support for schemas/datatypes. |
| | 2574 | * See http://code.google.com/apis/kml/documentation/kmlreference.html#extendeddata |
| | 2575 | * for more information on extendeddata. |
| | 2576 | * |
| | 2577 | * Parameters: |
| | 2578 | * node - {E4XElement} |
| | 2579 | * |
| | 2580 | * Returns: |
| | 2581 | * {Object} An attributes object. |
| | 2582 | */ |
| | 2583 | parseExtendedData: function(node) { |
| | 2584 | var attributes = {}; |
| | 2585 | var dataNodes = node.*::Data; |
| | 2586 | for (var i = 0, len = dataNodes.length(); i < len; i++) { |
| | 2587 | var data = dataNodes[i]; |
| | 2588 | var key = data.@name; |
| | 2589 | var ed = {}; |
| | 2590 | var valueNode = data.*::value; |
| | 2591 | if (valueNode.length() > 0) |
| | 2592 | ed['value'] = valueNode[0].toString(); |
| | 2593 | var nameNode = data.*::displayName; |
| | 2594 | if (nameNode.length() > 0) |
| | 2595 | ed['displayName'] = valueNode[0].toString(); |
| | 2596 | attributes[key] = ed; |
| | 2597 | } |
| | 2598 | return attributes; |
| | 2599 | }, |
| | 2600 | /** |
| | 2601 | * Method: write |
| | 2602 | * Accept Feature Collection, and return a string. |
| | 2603 | * |
| | 2604 | * Parameters: |
| | 2605 | * features - {Array(<ZOO.Feature>} An array of features. |
| | 2606 | * |
| | 2607 | * Returns: |
| | 2608 | * {String} A KML string. |
| | 2609 | */ |
| | 2610 | write: function(features) { |
| | 2611 | if(!(features instanceof Array)) |
| | 2612 | features = [features]; |
| | 2613 | var kml = new XML('<kml xmlns="'+this.kmlns+'"></kml>'); |
| | 2614 | var folder = kml.Document.Folder; |
| | 2615 | folder.name = this.foldersName; |
| | 2616 | folder.description = this.foldersDesc; |
| | 2617 | for(var i=0, len=features.length; i<len; ++i) { |
| | 2618 | folder.Placemark[i] = this.createPlacemark(features[i]); |
| | 2619 | } |
| | 2620 | return kml.toXMLString(); |
| | 2621 | }, |
| | 2622 | /** |
| | 2623 | * Method: createPlacemark |
| | 2624 | * Creates and returns a KML placemark node representing the given feature. |
| | 2625 | * |
| | 2626 | * Parameters: |
| | 2627 | * feature - {<ZOO.Feature>} |
| | 2628 | * |
| | 2629 | * Returns: |
| | 2630 | * {E4XElement} |
| | 2631 | */ |
| | 2632 | createPlacemark: function(feature) { |
| | 2633 | var placemark = new XML('<Placemark xmlns="'+this.kmlns+'"></Placemark>'); |
| | 2634 | placemark.name = (feature.attributes.name) ? |
| | 2635 | feature.attributes.name : feature.id; |
| | 2636 | placemark.description = (feature.attributes.description) ? |
| | 2637 | feature.attributes.description : this.placemarksDesc; |
| | 2638 | if(feature.fid != null) |
| | 2639 | placemark.@id = feature.fid; |
| | 2640 | placemark.*[2] = this.buildGeometryNode(feature.geometry); |
| | 2641 | return placemark; |
| | 2642 | }, |
| | 2643 | /** |
| | 2644 | * Method: buildGeometryNode |
| | 2645 | * Builds and returns a KML geometry node with the given geometry. |
| | 2646 | * |
| | 2647 | * Parameters: |
| | 2648 | * geometry - {<ZOO.Geometry>} |
| | 2649 | * |
| | 2650 | * Returns: |
| | 2651 | * {E4XElement} |
| | 2652 | */ |
| | 2653 | buildGeometryNode: function(geometry) { |
| | 2654 | if (this.internalProjection && this.externalProjection) { |
| | 2655 | geometry = geometry.clone(); |
| | 2656 | geometry.transform(this.internalProjection, |
| | 2657 | this.externalProjection); |
| | 2658 | } |
| | 2659 | var className = geometry.CLASS_NAME; |
| | 2660 | var type = className.substring(className.lastIndexOf(".") + 1); |
| | 2661 | var builder = this.buildGeometry[type.toLowerCase()]; |
| | 2662 | var node = null; |
| | 2663 | if(builder) { |
| | 2664 | node = builder.apply(this, [geometry]); |
| | 2665 | } |
| | 2666 | return node; |
| | 2667 | }, |
| | 2668 | /** |
| | 2669 | * Property: buildGeometry |
| | 2670 | * Object containing methods to do the actual geometry node building |
| | 2671 | * based on geometry type. |
| | 2672 | */ |
| | 2673 | buildGeometry: { |
| | 2674 | /** |
| | 2675 | * Method: buildGeometry.point |
| | 2676 | * Given a ZOO point geometry, create a KML point. |
| | 2677 | * |
| | 2678 | * Parameters: |
| | 2679 | * geometry - {<ZOO.Geometry.Point>} A point geometry. |
| | 2680 | * |
| | 2681 | * Returns: |
| | 2682 | * {E4XElement} A KML point node. |
| | 2683 | */ |
| | 2684 | 'point': function(geometry) { |
| | 2685 | var kml = new XML('<Point xmlns="'+this.kmlns+'"></Point>'); |
| | 2686 | kml.coordinates = this.buildCoordinatesNode(geometry); |
| | 2687 | return kml; |
| | 2688 | }, |
| | 2689 | /** |
| | 2690 | * Method: buildGeometry.multipoint |
| | 2691 | * Given a ZOO multipoint geometry, create a KML |
| | 2692 | * GeometryCollection. |
| | 2693 | * |
| | 2694 | * Parameters: |
| | 2695 | * geometry - {<ZOO.Geometry.MultiPoint>} A multipoint geometry. |
| | 2696 | * |
| | 2697 | * Returns: |
| | 2698 | * {E4XElement} A KML GeometryCollection node. |
| | 2699 | */ |
| | 2700 | 'multipoint': function(geometry) { |
| | 2701 | return this.buildGeometry.collection.apply(this, [geometry]); |
| | 2702 | }, |
| | 2703 | /** |
| | 2704 | * Method: buildGeometry.linestring |
| | 2705 | * Given a ZOO linestring geometry, create a KML linestring. |
| | 2706 | * |
| | 2707 | * Parameters: |
| | 2708 | * geometry - {<ZOO.Geometry.LineString>} A linestring geometry. |
| | 2709 | * |
| | 2710 | * Returns: |
| | 2711 | * {E4XElement} A KML linestring node. |
| | 2712 | */ |
| | 2713 | 'linestring': function(geometry) { |
| | 2714 | var kml = new XML('<LineString xmlns="'+this.kmlns+'"></LineString>'); |
| | 2715 | kml.coordinates = this.buildCoordinatesNode(geometry); |
| | 2716 | return kml; |
| | 2717 | }, |
| | 2718 | /** |
| | 2719 | * Method: buildGeometry.multilinestring |
| | 2720 | * Given a ZOO multilinestring geometry, create a KML |
| | 2721 | * GeometryCollection. |
| | 2722 | * |
| | 2723 | * Parameters: |
| | 2724 | * geometry - {<ZOO.Geometry.MultiLineString>} A multilinestring geometry. |
| | 2725 | * |
| | 2726 | * Returns: |
| | 2727 | * {E4XElement} A KML GeometryCollection node. |
| | 2728 | */ |
| | 2729 | 'multilinestring': function(geometry) { |
| | 2730 | return this.buildGeometry.collection.apply(this, [geometry]); |
| | 2731 | }, |
| | 2732 | /** |
| | 2733 | * Method: buildGeometry.linearring |
| | 2734 | * Given a ZOO linearring geometry, create a KML linearring. |
| | 2735 | * |
| | 2736 | * Parameters: |
| | 2737 | * geometry - {<ZOO.Geometry.LinearRing>} A linearring geometry. |
| | 2738 | * |
| | 2739 | * Returns: |
| | 2740 | * {E4XElement} A KML linearring node. |
| | 2741 | */ |
| | 2742 | 'linearring': function(geometry) { |
| | 2743 | var kml = new XML('<LinearRing xmlns="'+this.kmlns+'"></LinearRing>'); |
| | 2744 | kml.coordinates = this.buildCoordinatesNode(geometry); |
| | 2745 | return kml; |
| | 2746 | }, |
| | 2747 | /** |
| | 2748 | * Method: buildGeometry.polygon |
| | 2749 | * Given a ZOO polygon geometry, create a KML polygon. |
| | 2750 | * |
| | 2751 | * Parameters: |
| | 2752 | * geometry - {<ZOO.Geometry.Polygon>} A polygon geometry. |
| | 2753 | * |
| | 2754 | * Returns: |
| | 2755 | * {E4XElement} A KML polygon node. |
| | 2756 | */ |
| | 2757 | 'polygon': function(geometry) { |
| | 2758 | var kml = new XML('<Polygon xmlns="'+this.kmlns+'"></Polygon>'); |
| | 2759 | var rings = geometry.components; |
| | 2760 | var ringMember, ringGeom, type; |
| | 2761 | for(var i=0, len=rings.length; i<len; ++i) { |
| | 2762 | type = (i==0) ? "outerBoundaryIs" : "innerBoundaryIs"; |
| | 2763 | ringMember = new XML('<'+type+' xmlns="'+this.kmlns+'"></'+type+'>'); |
| | 2764 | ringMember.LinearRing = this.buildGeometry.linearring.apply(this,[rings[i]]); |
| | 2765 | kml.*[i] = ringMember; |
| | 2766 | } |
| | 2767 | return kml; |
| | 2768 | }, |
| | 2769 | /** |
| | 2770 | * Method: buildGeometry.multipolygon |
| | 2771 | * Given a ZOO multipolygon geometry, create a KML |
| | 2772 | * GeometryCollection. |
| | 2773 | * |
| | 2774 | * Parameters: |
| | 2775 | * geometry - {<ZOO.Geometry.Point>} A multipolygon geometry. |
| | 2776 | * |
| | 2777 | * Returns: |
| | 2778 | * {E4XElement} A KML GeometryCollection node. |
| | 2779 | */ |
| | 2780 | 'multipolygon': function(geometry) { |
| | 2781 | return this.buildGeometry.collection.apply(this, [geometry]); |
| | 2782 | }, |
| | 2783 | /** |
| | 2784 | * Method: buildGeometry.collection |
| | 2785 | * Given a ZOO geometry collection, create a KML MultiGeometry. |
| | 2786 | * |
| | 2787 | * Parameters: |
| | 2788 | * geometry - {<ZOO.Geometry.Collection>} A geometry collection. |
| | 2789 | * |
| | 2790 | * Returns: |
| | 2791 | * {E4XElement} A KML MultiGeometry node. |
| | 2792 | */ |
| | 2793 | 'collection': function(geometry) { |
| | 2794 | var kml = new XML('<MultiGeometry xmlns="'+this.kmlns+'"></MultiGeometry>'); |
| | 2795 | var child; |
| | 2796 | for(var i=0, len=geometry.components.length; i<len; ++i) { |
| | 2797 | kml.*[i] = this.buildGeometryNode.apply(this,[geometry.components[i]]); |
| | 2798 | } |
| | 2799 | return kml; |
| | 2800 | } |
| | 2801 | }, |
| | 2802 | /** |
| | 2803 | * Method: buildCoordinatesNode |
| | 2804 | * Builds and returns the KML coordinates node with the given geometry |
| | 2805 | * <coordinates>...</coordinates> |
| | 2806 | * |
| | 2807 | * Parameters: |
| | 2808 | * geometry - {<ZOO.Geometry>} |
| | 2809 | * |
| | 2810 | * Return: |
| | 2811 | * {E4XElement} |
| | 2812 | */ |
| | 2813 | buildCoordinatesNode: function(geometry) { |
| | 2814 | var cooridnates = new XML('<coordinates xmlns="'+this.kmlns+'"></coordinates>'); |
| | 2815 | var points = geometry.components; |
| | 2816 | if(points) { |
| | 2817 | // LineString or LinearRing |
| | 2818 | var point; |
| | 2819 | var numPoints = points.length; |
| | 2820 | var parts = new Array(numPoints); |
| | 2821 | for(var i=0; i<numPoints; ++i) { |
| | 2822 | point = points[i]; |
| | 2823 | parts[i] = point.x + "," + point.y; |
| | 2824 | } |
| | 2825 | coordinates = parts.join(" "); |
| | 2826 | } else { |
| | 2827 | // Point |
| | 2828 | coordinates = geometry.x + "," + geometry.y; |
| | 2829 | } |
| | 2830 | return coordinates; |
| | 2831 | }, |
| | 2832 | CLASS_NAME: 'ZOO.Format.KML' |
| | 2833 | }); |
| | 2834 | /** |
| | 2835 | * Class: ZOO.Format.GML |
| | 2836 | * Read/Write GML. Create a new instance with the <ZOO.Format.GML> |
| | 2837 | * constructor. Supports the GML simple features profile. |
| | 2838 | * |
| | 2839 | * Inherits from: |
| | 2840 | * - <ZOO.Format> |
| | 2841 | */ |
| | 2842 | ZOO.Format.GML = ZOO.Class(ZOO.Format, { |
| | 2843 | /** |
| | 2844 | * Property: schemaLocation |
| | 2845 | * {String} Schema location for a particular minor version. |
| | 2846 | */ |
| | 2847 | schemaLocation: "http://www.opengis.net/gml http://schemas.opengis.net/gml/2.1.2/feature.xsd", |
| | 2848 | /** |
| | 2849 | * Property: namespaces |
| | 2850 | * {Object} Mapping of namespace aliases to namespace URIs. |
| | 2851 | */ |
| | 2852 | namespaces: { |
| | 2853 | ogr: "http://ogr.maptools.org/", |
| | 2854 | gml: "http://www.opengis.net/gml", |
| | 2855 | xlink: "http://www.w3.org/1999/xlink", |
| | 2856 | xsi: "http://www.w3.org/2001/XMLSchema-instance", |
| | 2857 | wfs: "http://www.opengis.net/wfs" // this is a convenience for reading wfs:FeatureCollection |
| | 2858 | }, |
| | 2859 | /** |
| | 2860 | * Property: defaultPrefix |
| | 2861 | */ |
| | 2862 | defaultPrefix: 'ogr', |
| | 2863 | /** |
| | 2864 | * Property: collectionName |
| | 2865 | * {String} Name of featureCollection element. |
| | 2866 | */ |
| | 2867 | collectionName: "FeatureCollection", |
| 64 | | var url=Proj4js.getScriptLocation()+'defs/'+this.srsAuth.toUpperCase()+this.srsProjNumber+'.js'; |
| 65 | | Proj4js.loadScript(url,Proj4js.bind(this.defsLoaded,this),Proj4js.bind(this.loadFromService,this),Proj4js.bind(this.checkDefsLoaded,this)); |
| 66 | | */ |
| 67 | | }, |
| 68 | | loadFromService:function(){var url=Proj4js.defsLookupService+'/'+this.srsAuth+'/'+this.srsProjNumber+'/proj4js/';Proj4js.loadScript(url,Proj4js.bind(this.defsLoaded,this),Proj4js.bind(this.defsFailed,this),Proj4js.bind(this.checkDefsLoaded,this));},defsLoaded:function(){this.parseDefs();this.loadProjCode(this.projName);},checkDefsLoaded:function(){if(Proj4js.defs[this.srsCode]){return true;}else{return false;}},defsFailed:function(){Proj4js.reportError('failed to load projection definition for: '+this.srsCode);Proj4js.defs[this.srsCode]=Proj4js.defs['WGS84'];this.defsLoaded();}, |
| 69 | | loadProjCode:function(projName){ |
| 70 | | if(Proj4js.Proj[projName]){this.initTransforms();return;} |
| 71 | | var url=Proj4js.getScriptLocation()+'projCode/'+projName+'.js'; |
| 72 | | Proj4js.loadScript(url,Proj4js.bind(this.loadProjCodeSuccess,this,projName),Proj4js.bind(this.loadProjCodeFailure,this,projName),Proj4js.bind(this.checkCodeLoaded,this,projName)); |
| 73 | | }, |
| 74 | | loadProjCodeSuccess:function(projName){if(Proj4js.Proj[projName].dependsOn){this.loadProjCode(Proj4js.Proj[projName].dependsOn);}else{this.initTransforms();}},loadProjCodeFailure:function(projName){Proj4js.reportError("failed to find projection file for: "+projName);},checkCodeLoaded:function(projName){if(Proj4js.Proj[projName]){return true;}else{return false;}},initTransforms:function(){Proj4js.extend(this,Proj4js.Proj[this.projName]);this.init();this.readyToUse=true;},parseDefs:function(){this.defData=Proj4js.defs[this.srsCode];var paramName,paramVal;if(!this.defData){return;} |
| 75 | | var paramArray=this.defData.split("+");for(var prop=0;prop<paramArray.length;prop++){var property=paramArray[prop].split("=");paramName=property[0].toLowerCase();paramVal=property[1];switch(paramName.replace(/\s/gi,"")){case"":break;case"title":this.title=paramVal;break;case"proj":this.projName=paramVal.replace(/\s/gi,"");break;case"units":this.units=paramVal.replace(/\s/gi,"");break;case"datum":this.datumCode=paramVal.replace(/\s/gi,"");break;case"nadgrids":this.nagrids=paramVal.replace(/\s/gi,"");break;case"ellps":this.ellps=paramVal.replace(/\s/gi,"");break;case"a":this.a=parseFloat(paramVal);break;case"b":this.b=parseFloat(paramVal);break;case"rf":this.rf=parseFloat(paramVal);break;case"lat_0":this.lat0=paramVal*Proj4js.common.D2R;break;case"lat_1":this.lat1=paramVal*Proj4js.common.D2R;break;case"lat_2":this.lat2=paramVal*Proj4js.common.D2R;break;case"lat_ts":this.lat_ts=paramVal*Proj4js.common.D2R;break;case"lon_0":this.long0=paramVal*Proj4js.common.D2R;break;case"alpha":this.alpha=parseFloat(paramVal)*Proj4js.common.D2R;break;case"lonc":this.longc=paramVal*Proj4js.common.D2R;break;case"x_0":this.x0=parseFloat(paramVal);break;case"y_0":this.y0=parseFloat(paramVal);break;case"k_0":this.k0=parseFloat(paramVal);break;case"k":this.k0=parseFloat(paramVal);break;case"r_a":this.R_A=true;break;case"zone":this.zone=parseInt(paramVal);break;case"south":this.utmSouth=true;break;case"towgs84":this.datum_params=paramVal.split(",");break;case"to_meter":this.to_meter=parseFloat(paramVal);break;case"from_greenwich":this.from_greenwich=paramVal*Proj4js.common.D2R;break;case"pm":paramVal=paramVal.replace(/\s/gi,"");this.from_greenwich=Proj4js.PrimeMeridian[paramVal]?Proj4js.PrimeMeridian[paramVal]:parseFloat(paramVal);this.from_greenwich*=Proj4js.common.D2R;break;case"no_defs":break;default:}} |
| 76 | | this.deriveConstants();},deriveConstants:function(){if(this.nagrids=='@null')this.datumCode='none';if(this.datumCode&&this.datumCode!='none'){var datumDef=Proj4js.Datum[this.datumCode];if(datumDef){this.datum_params=datumDef.towgs84?datumDef.towgs84.split(','):null;this.ellps=datumDef.ellipse;this.datumName=datumDef.datumName?datumDef.datumName:this.datumCode;}} |
| 77 | | if(!this.a){var ellipse=Proj4js.Ellipsoid[this.ellps]?Proj4js.Ellipsoid[this.ellps]:Proj4js.Ellipsoid['WGS84'];Proj4js.extend(this,ellipse);} |
| 78 | | if(this.rf&&!this.b)this.b=(1.0-1.0/this.rf)*this.a;if(Math.abs(this.a-this.b)<Proj4js.common.EPSLN){this.sphere=true;this.b=this.a;} |
| 79 | | this.a2=this.a*this.a;this.b2=this.b*this.b;this.es=(this.a2-this.b2)/this.a2;this.e=Math.sqrt(this.es);if(this.R_A){this.a*=1.-this.es*(Proj4js.common.SIXTH+this.es*(Proj4js.common.RA4+this.es*Proj4js.common.RA6));this.a2=this.a*this.a;this.b2=this.b*this.b;this.es=0.;} |
| 80 | | this.ep2=(this.a2-this.b2)/this.b2;if(!this.k0)this.k0=1.0;this.datum=new Proj4js.datum(this);}});Proj4js.Proj.longlat={init:function(){},forward:function(pt){return pt;},inverse:function(pt){return pt;}};Proj4js.defs={'WGS84':"+title=long/lat:WGS84 +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees",'EPSG:4326':"+title=long/lat:WGS84 +proj=longlat +a=6378137.0 +b=6356752.31424518 +ellps=WGS84 +datum=WGS84 +units=degrees",'EPSG:4269':"+title=long/lat:NAD83 +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees",'EPSG:3785':"+title= Google Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs"};Proj4js.defs['GOOGLE']=Proj4js.defs['EPSG:3785'];Proj4js.defs['EPSG:900913']=Proj4js.defs['EPSG:3785'];Proj4js.defs['EPSG:102113']=Proj4js.defs['EPSG:3785'];Proj4js.common={PI:3.141592653589793238,HALF_PI:1.570796326794896619,TWO_PI:6.283185307179586477,FORTPI:0.78539816339744833,R2D:57.29577951308232088,D2R:0.01745329251994329577,SEC_TO_RAD:4.84813681109535993589914102357e-6,EPSLN:1.0e-10,MAX_ITER:20,COS_67P5:0.38268343236508977,AD_C:1.0026000,PJD_UNKNOWN:0,PJD_3PARAM:1,PJD_7PARAM:2,PJD_GRIDSHIFT:3,PJD_WGS84:4,PJD_NODATUM:5,SRS_WGS84_SEMIMAJOR:6378137.0,SIXTH:.1666666666666666667,RA4:.04722222222222222222,RA6:.02215608465608465608,RV4:.06944444444444444444,RV6:.04243827160493827160,msfnz:function(eccent,sinphi,cosphi){var con=eccent*sinphi;return cosphi/(Math.sqrt(1.0-con*con));},tsfnz:function(eccent,phi,sinphi){var con=eccent*sinphi;var com=.5*eccent;con=Math.pow(((1.0-con)/(1.0+con)),com);return(Math.tan(.5*(this.HALF_PI-phi))/con);},phi2z:function(eccent,ts){var eccnth=.5*eccent;var con,dphi;var phi=this.HALF_PI-2*Math.atan(ts);for(i=0;i<=15;i++){con=eccent*Math.sin(phi);dphi=this.HALF_PI-2*Math.atan(ts*(Math.pow(((1.0-con)/(1.0+con)),eccnth)))-phi;phi+=dphi;if(Math.abs(dphi)<=.0000000001)return phi;} |
| 81 | | alert("phi2z has NoConvergence");return(-9999);},qsfnz:function(eccent,sinphi){var con;if(eccent>1.0e-7){con=eccent*sinphi;return((1.0-eccent*eccent)*(sinphi/(1.0-con*con)-(.5/eccent)*Math.log((1.0-con)/(1.0+con))));}else{return(2.0*sinphi);}},asinz:function(x){if(Math.abs(x)>1.0){x=(x>1.0)?1.0:-1.0;} |
| 82 | | return Math.asin(x);},e0fn:function(x){return(1.0-0.25*x*(1.0+x/16.0*(3.0+1.25*x)));},e1fn:function(x){return(0.375*x*(1.0+0.25*x*(1.0+0.46875*x)));},e2fn:function(x){return(0.05859375*x*x*(1.0+0.75*x));},e3fn:function(x){return(x*x*x*(35.0/3072.0));},mlfn:function(e0,e1,e2,e3,phi){return(e0*phi-e1*Math.sin(2.0*phi)+e2*Math.sin(4.0*phi)-e3*Math.sin(6.0*phi));},srat:function(esinp,exp){return(Math.pow((1.0-esinp)/(1.0+esinp),exp));},sign:function(x){if(x<0.0)return(-1);else return(1);},adjust_lon:function(x){x=(Math.abs(x)<this.PI)?x:(x-(this.sign(x)*this.TWO_PI));return x;},adjust_lat:function(x){x=(Math.abs(x)<this.HALF_PI)?x:(x-(this.sign(x)*this.PI));return x;},latiso:function(eccent,phi,sinphi){if(Math.abs(phi)>this.HALF_PI)return+Number.NaN;if(phi==this.HALF_PI)return Number.POSITIVE_INFINITY;if(phi==-1.0*this.HALF_PI)return-1.0*Number.POSITIVE_INFINITY;var con=eccent*sinphi;return Math.log(Math.tan((this.HALF_PI+phi)/2.0))+eccent*Math.log((1.0-con)/(1.0+con))/2.0;},fL:function(x,L){return 2.0*Math.atan(x*Math.exp(L))-this.HALF_PI;},invlatiso:function(eccent,ts){var phi=this.fL(1.0,ts);var Iphi=0.0;var con=0.0;do{Iphi=phi;con=eccent*Math.sin(Iphi);phi=this.fL(Math.exp(eccent*Math.log((1.0+con)/(1.0-con))/2.0),ts)}while(Math.abs(phi-Iphi)>1.0e-12);return phi;},sinh:function(x) |
| 83 | | {var r=Math.exp(x);r=(r-1.0/r)/2.0;return r;},cosh:function(x) |
| 84 | | {var r=Math.exp(x);r=(r+1.0/r)/2.0;return r;},tanh:function(x) |
| 85 | | {var r=Math.exp(x);r=(r-1.0/r)/(r+1.0/r);return r;},asinh:function(x) |
| 86 | | {var s=(x>=0?1.0:-1.0);return s*(Math.log(Math.abs(x)+Math.sqrt(x*x+1.0)));},acosh:function(x) |
| 87 | | {return 2.0*Math.log(Math.sqrt((x+1.0)/2.0)+Math.sqrt((x-1.0)/2.0));},atanh:function(x) |
| 88 | | {return Math.log((x-1.0)/(x+1.0))/2.0;},gN:function(a,e,sinphi) |
| 89 | | {var temp=e*sinphi;return a/Math.sqrt(1.0-temp*temp);}};Proj4js.datum=Proj4js.Class({initialize:function(proj){this.datum_type=Proj4js.common.PJD_WGS84;if(proj.datumCode&&proj.datumCode=='none'){this.datum_type=Proj4js.common.PJD_NODATUM;} |
| 90 | | if(proj&&proj.datum_params){for(var i=0;i<proj.datum_params.length;i++){proj.datum_params[i]=parseFloat(proj.datum_params[i]);} |
| 91 | | if(proj.datum_params[0]!=0||proj.datum_params[1]!=0||proj.datum_params[2]!=0){this.datum_type=Proj4js.common.PJD_3PARAM;} |
| 92 | | if(proj.datum_params.length>3){if(proj.datum_params[3]!=0||proj.datum_params[4]!=0||proj.datum_params[5]!=0||proj.datum_params[6]!=0){this.datum_type=Proj4js.common.PJD_7PARAM;proj.datum_params[3]*=Proj4js.common.SEC_TO_RAD;proj.datum_params[4]*=Proj4js.common.SEC_TO_RAD;proj.datum_params[5]*=Proj4js.common.SEC_TO_RAD;proj.datum_params[6]=(proj.datum_params[6]/1000000.0)+1.0;}}} |
| 93 | | if(proj){this.a=proj.a;this.b=proj.b;this.es=proj.es;this.ep2=proj.ep2;this.datum_params=proj.datum_params;}},compare_datums:function(dest){if(this.datum_type!=dest.datum_type){return false;}else if(this.a!=dest.a||Math.abs(this.es-dest.es)>0.000000000050){return false;}else if(this.datum_type==Proj4js.common.PJD_3PARAM){return(this.datum_params[0]==dest.datum_params[0]&&this.datum_params[1]==dest.datum_params[1]&&this.datum_params[2]==dest.datum_params[2]);}else if(this.datum_type==Proj4js.common.PJD_7PARAM){return(this.datum_params[0]==dest.datum_params[0]&&this.datum_params[1]==dest.datum_params[1]&&this.datum_params[2]==dest.datum_params[2]&&this.datum_params[3]==dest.datum_params[3]&&this.datum_params[4]==dest.datum_params[4]&&this.datum_params[5]==dest.datum_params[5]&&this.datum_params[6]==dest.datum_params[6]);}else if(this.datum_type==Proj4js.common.PJD_GRIDSHIFT){return strcmp(pj_param(this.params,"snadgrids").s,pj_param(dest.params,"snadgrids").s)==0;}else{return true;}},geodetic_to_geocentric:function(p){var Longitude=p.x;var Latitude=p.y;var Height=p.z?p.z:0;var X;var Y;var Z;var Error_Code=0;var Rn;var Sin_Lat;var Sin2_Lat;var Cos_Lat;if(Latitude<-Proj4js.common.HALF_PI&&Latitude>-1.001*Proj4js.common.HALF_PI){Latitude=-Proj4js.common.HALF_PI;}else if(Latitude>Proj4js.common.HALF_PI&&Latitude<1.001*Proj4js.common.HALF_PI){Latitude=Proj4js.common.HALF_PI;}else if((Latitude<-Proj4js.common.HALF_PI)||(Latitude>Proj4js.common.HALF_PI)){Proj4js.reportError('geocent:lat out of range:'+Latitude);return null;} |
| 94 | | if(Longitude>Proj4js.common.PI)Longitude-=(2*Proj4js.common.PI);Sin_Lat=Math.sin(Latitude);Cos_Lat=Math.cos(Latitude);Sin2_Lat=Sin_Lat*Sin_Lat;Rn=this.a/(Math.sqrt(1.0e0-this.es*Sin2_Lat));X=(Rn+Height)*Cos_Lat*Math.cos(Longitude);Y=(Rn+Height)*Cos_Lat*Math.sin(Longitude);Z=((Rn*(1-this.es))+Height)*Sin_Lat;p.x=X;p.y=Y;p.z=Z;return Error_Code;},geocentric_to_geodetic:function(p){var genau=1.E-12;var genau2=(genau*genau);var maxiter=30;var P;var RR;var CT;var ST;var RX;var RK;var RN;var CPHI0;var SPHI0;var CPHI;var SPHI;var SDPHI;var At_Pole;var iter;var X=p.x;var Y=p.y;var Z=p.z?p.z:0.0;var Longitude;var Latitude;var Height;At_Pole=false;P=Math.sqrt(X*X+Y*Y);RR=Math.sqrt(X*X+Y*Y+Z*Z);if(P/this.a<genau){At_Pole=true;Longitude=0.0;if(RR/this.a<genau){Latitude=Proj4js.common.HALF_PI;Height=-this.b;return;}}else{Longitude=Math.atan2(Y,X);} |
| 95 | | CT=Z/RR;ST=P/RR;RX=1.0/Math.sqrt(1.0-this.es*(2.0-this.es)*ST*ST);CPHI0=ST*(1.0-this.es)*RX;SPHI0=CT*RX;iter=0;do |
| 96 | | {iter++;RN=this.a/Math.sqrt(1.0-this.es*SPHI0*SPHI0);Height=P*CPHI0+Z*SPHI0-RN*(1.0-this.es*SPHI0*SPHI0);RK=this.es*RN/(RN+Height);RX=1.0/Math.sqrt(1.0-RK*(2.0-RK)*ST*ST);CPHI=ST*(1.0-RK)*RX;SPHI=CT*RX;SDPHI=SPHI*CPHI0-CPHI*SPHI0;CPHI0=CPHI;SPHI0=SPHI;} |
| 97 | | while(SDPHI*SDPHI>genau2&&iter<maxiter);Latitude=Math.atan(SPHI/Math.abs(CPHI));p.x=Longitude;p.y=Latitude;p.z=Height;return p;},geocentric_to_geodetic_noniter:function(p){var X=p.x;var Y=p.y;var Z=p.z?p.z:0;var Longitude;var Latitude;var Height;var W;var W2;var T0;var T1;var S0;var S1;var Sin_B0;var Sin3_B0;var Cos_B0;var Sin_p1;var Cos_p1;var Rn;var Sum;var At_Pole;X=parseFloat(X);Y=parseFloat(Y);Z=parseFloat(Z);At_Pole=false;if(X!=0.0) |
| 98 | | {Longitude=Math.atan2(Y,X);} |
| 99 | | else |
| 100 | | {if(Y>0) |
| 101 | | {Longitude=Proj4js.common.HALF_PI;} |
| 102 | | else if(Y<0) |
| 103 | | {Longitude=-Proj4js.common.HALF_PI;} |
| 104 | | else |
| 105 | | {At_Pole=true;Longitude=0.0;if(Z>0.0) |
| 106 | | {Latitude=Proj4js.common.HALF_PI;} |
| 107 | | else if(Z<0.0) |
| 108 | | {Latitude=-Proj4js.common.HALF_PI;} |
| 109 | | else |
| 110 | | {Latitude=Proj4js.common.HALF_PI;Height=-this.b;return;}}} |
| 111 | | W2=X*X+Y*Y;W=Math.sqrt(W2);T0=Z*Proj4js.common.AD_C;S0=Math.sqrt(T0*T0+W2);Sin_B0=T0/S0;Cos_B0=W/S0;Sin3_B0=Sin_B0*Sin_B0*Sin_B0;T1=Z+this.b*this.ep2*Sin3_B0;Sum=W-this.a*this.es*Cos_B0*Cos_B0*Cos_B0;S1=Math.sqrt(T1*T1+Sum*Sum);Sin_p1=T1/S1;Cos_p1=Sum/S1;Rn=this.a/Math.sqrt(1.0-this.es*Sin_p1*Sin_p1);if(Cos_p1>=Proj4js.common.COS_67P5) |
| 112 | | {Height=W/Cos_p1-Rn;} |
| 113 | | else if(Cos_p1<=-Proj4js.common.COS_67P5) |
| 114 | | {Height=W/-Cos_p1-Rn;} |
| 115 | | else |
| 116 | | {Height=Z/Sin_p1+Rn*(this.es-1.0);} |
| 117 | | if(At_Pole==false) |
| 118 | | {Latitude=Math.atan(Sin_p1/Cos_p1);} |
| 119 | | p.x=Longitude;p.y=Latitude;p.z=Height;return p;},geocentric_to_wgs84:function(p){if(this.datum_type==Proj4js.common.PJD_3PARAM) |
| 120 | | {p.x+=this.datum_params[0];p.y+=this.datum_params[1];p.z+=this.datum_params[2];} |
| 121 | | else if(this.datum_type==Proj4js.common.PJD_7PARAM) |
| 122 | | {var Dx_BF=this.datum_params[0];var Dy_BF=this.datum_params[1];var Dz_BF=this.datum_params[2];var Rx_BF=this.datum_params[3];var Ry_BF=this.datum_params[4];var Rz_BF=this.datum_params[5];var M_BF=this.datum_params[6];var x_out=M_BF*(p.x-Rz_BF*p.y+Ry_BF*p.z)+Dx_BF;var y_out=M_BF*(Rz_BF*p.x+p.y-Rx_BF*p.z)+Dy_BF;var z_out=M_BF*(-Ry_BF*p.x+Rx_BF*p.y+p.z)+Dz_BF;p.x=x_out;p.y=y_out;p.z=z_out;}},geocentric_from_wgs84:function(p){if(this.datum_type==Proj4js.common.PJD_3PARAM) |
| 123 | | {p.x-=this.datum_params[0];p.y-=this.datum_params[1];p.z-=this.datum_params[2];} |
| 124 | | else if(this.datum_type==Proj4js.common.PJD_7PARAM) |
| 125 | | {var Dx_BF=this.datum_params[0];var Dy_BF=this.datum_params[1];var Dz_BF=this.datum_params[2];var Rx_BF=this.datum_params[3];var Ry_BF=this.datum_params[4];var Rz_BF=this.datum_params[5];var M_BF=this.datum_params[6];var x_tmp=(p.x-Dx_BF)/M_BF;var y_tmp=(p.y-Dy_BF)/M_BF;var z_tmp=(p.z-Dz_BF)/M_BF;p.x=x_tmp+Rz_BF*y_tmp-Ry_BF*z_tmp;p.y=-Rz_BF*x_tmp+y_tmp+Rx_BF*z_tmp;p.z=Ry_BF*x_tmp-Rx_BF*y_tmp+z_tmp;}}});Proj4js.Point=Proj4js.Class({initialize:function(x,y,z){if(typeof x=='object'){this.x=x[0];this.y=x[1];this.z=x[2]||0.0;}else if(typeof x=='string'){var coords=x.split(',');this.x=parseFloat(coords[0]);this.y=parseFloat(coords[1]);this.z=parseFloat(coords[2])||0.0;}else{this.x=x;this.y=y;this.z=z||0.0;}},clone:function(){return new Proj4js.Point(this.x,this.y,this.z);},toString:function(){return("x="+this.x+",y="+this.y);},toShortString:function(){return(this.x+", "+this.y);}});Proj4js.PrimeMeridian={"greenwich":0.0,"lisbon":-9.131906111111,"paris":2.337229166667,"bogota":-74.080916666667,"madrid":-3.687938888889,"rome":12.452333333333,"bern":7.439583333333,"jakarta":106.807719444444,"ferro":-17.666666666667,"brussels":4.367975,"stockholm":18.058277777778,"athens":23.7163375,"oslo":10.722916666667};Proj4js.Ellipsoid={"MERIT":{a:6378137.0,rf:298.257,ellipseName:"MERIT 1983"},"SGS85":{a:6378136.0,rf:298.257,ellipseName:"Soviet Geodetic System 85"},"GRS80":{a:6378137.0,rf:298.257222101,ellipseName:"GRS 1980(IUGG, 1980)"},"IAU76":{a:6378140.0,rf:298.257,ellipseName:"IAU 1976"},"airy":{a:6377563.396,b:6356256.910,ellipseName:"Airy 1830"},"APL4.":{a:6378137,rf:298.25,ellipseName:"Appl. Physics. 1965"},"NWL9D":{a:6378145.0,rf:298.25,ellipseName:"Naval Weapons Lab., 1965"},"mod_airy":{a:6377340.189,b:6356034.446,ellipseName:"Modified Airy"},"andrae":{a:6377104.43,rf:300.0,ellipseName:"Andrae 1876 (Den., Iclnd.)"},"aust_SA":{a:6378160.0,rf:298.25,ellipseName:"Australian Natl & S. Amer. 1969"},"GRS67":{a:6378160.0,rf:298.2471674270,ellipseName:"GRS 67(IUGG 1967)"},"bessel":{a:6377397.155,rf:299.1528128,ellipseName:"Bessel 1841"},"bess_nam":{a:6377483.865,rf:299.1528128,ellipseName:"Bessel 1841 (Namibia)"},"clrk66":{a:6378206.4,b:6356583.8,ellipseName:"Clarke 1866"},"clrk80":{a:6378249.145,rf:293.4663,ellipseName:"Clarke 1880 mod."},"CPM":{a:6375738.7,rf:334.29,ellipseName:"Comm. des Poids et Mesures 1799"},"delmbr":{a:6376428.0,rf:311.5,ellipseName:"Delambre 1810 (Belgium)"},"engelis":{a:6378136.05,rf:298.2566,ellipseName:"Engelis 1985"},"evrst30":{a:6377276.345,rf:300.8017,ellipseName:"Everest 1830"},"evrst48":{a:6377304.063,rf:300.8017,ellipseName:"Everest 1948"},"evrst56":{a:6377301.243,rf:300.8017,ellipseName:"Everest 1956"},"evrst69":{a:6377295.664,rf:300.8017,ellipseName:"Everest 1969"},"evrstSS":{a:6377298.556,rf:300.8017,ellipseName:"Everest (Sabah & Sarawak)"},"fschr60":{a:6378166.0,rf:298.3,ellipseName:"Fischer (Mercury Datum) 1960"},"fschr60m":{a:6378155.0,rf:298.3,ellipseName:"Fischer 1960"},"fschr68":{a:6378150.0,rf:298.3,ellipseName:"Fischer 1968"},"helmert":{a:6378200.0,rf:298.3,ellipseName:"Helmert 1906"},"hough":{a:6378270.0,rf:297.0,ellipseName:"Hough"},"intl":{a:6378388.0,rf:297.0,ellipseName:"International 1909 (Hayford)"},"kaula":{a:6378163.0,rf:298.24,ellipseName:"Kaula 1961"},"lerch":{a:6378139.0,rf:298.257,ellipseName:"Lerch 1979"},"mprts":{a:6397300.0,rf:191.0,ellipseName:"Maupertius 1738"},"new_intl":{a:6378157.5,b:6356772.2,ellipseName:"New International 1967"},"plessis":{a:6376523.0,rf:6355863.0,ellipseName:"Plessis 1817 (France)"},"krass":{a:6378245.0,rf:298.3,ellipseName:"Krassovsky, 1942"},"SEasia":{a:6378155.0,b:6356773.3205,ellipseName:"Southeast Asia"},"walbeck":{a:6376896.0,b:6355834.8467,ellipseName:"Walbeck"},"WGS60":{a:6378165.0,rf:298.3,ellipseName:"WGS 60"},"WGS66":{a:6378145.0,rf:298.25,ellipseName:"WGS 66"},"WGS72":{a:6378135.0,rf:298.26,ellipseName:"WGS 72"},"WGS84":{a:6378137.0,rf:298.257223563,ellipseName:"WGS 84"},"sphere":{a:6370997.0,b:6370997.0,ellipseName:"Normal Sphere (r=6370997)"}};Proj4js.Datum={"WGS84":{towgs84:"0,0,0",ellipse:"WGS84",datumName:"WGS84"},"GGRS87":{towgs84:"-199.87,74.79,246.62",ellipse:"GRS80",datumName:"Greek_Geodetic_Reference_System_1987"},"NAD83":{towgs84:"0,0,0",ellipse:"GRS80",datumName:"North_American_Datum_1983"},"NAD27":{nadgrids:"@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat",ellipse:"clrk66",datumName:"North_American_Datum_1927"},"potsdam":{towgs84:"606.0,23.0,413.0",ellipse:"bessel",datumName:"Potsdam Rauenberg 1950 DHDN"},"carthage":{towgs84:"-263.0,6.0,431.0",ellipse:"clark80",datumName:"Carthage 1934 Tunisia"},"hermannskogel":{towgs84:"653.0,-212.0,449.0",ellipse:"bessel",datumName:"Hermannskogel"},"ire65":{towgs84:"482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15",ellipse:"mod_airy",datumName:"Ireland 1965"},"nzgd49":{towgs84:"59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993",ellipse:"intl",datumName:"New Zealand Geodetic Datum 1949"},"OSGB36":{towgs84:"446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894",ellipse:"airy",datumName:"Airy 1830"}};Proj4js.WGS84=new Proj4js.Proj('WGS84');Proj4js.Datum['OSB36']=Proj4js.Datum['OSGB36'];Proj4js.Proj.aea={init:function(){if(Math.abs(this.lat1+this.lat2)<Proj4js.common.EPSLN){Proj4js.reportError("aeaInitEqualLatitudes");return;} |
| 126 | | this.temp=this.b/this.a;this.es=1.0-Math.pow(this.temp,2);this.e3=Math.sqrt(this.es);this.sin_po=Math.sin(this.lat1);this.cos_po=Math.cos(this.lat1);this.t1=this.sin_po;this.con=this.sin_po;this.ms1=Proj4js.common.msfnz(this.e3,this.sin_po,this.cos_po);this.qs1=Proj4js.common.qsfnz(this.e3,this.sin_po,this.cos_po);this.sin_po=Math.sin(this.lat2);this.cos_po=Math.cos(this.lat2);this.t2=this.sin_po;this.ms2=Proj4js.common.msfnz(this.e3,this.sin_po,this.cos_po);this.qs2=Proj4js.common.qsfnz(this.e3,this.sin_po,this.cos_po);this.sin_po=Math.sin(this.lat0);this.cos_po=Math.cos(this.lat0);this.t3=this.sin_po;this.qs0=Proj4js.common.qsfnz(this.e3,this.sin_po,this.cos_po);if(Math.abs(this.lat1-this.lat2)>Proj4js.common.EPSLN){this.ns0=(this.ms1*this.ms1-this.ms2*this.ms2)/(this.qs2-this.qs1);}else{this.ns0=this.con;} |
| 127 | | this.c=this.ms1*this.ms1+this.ns0*this.qs1;this.rh=this.a*Math.sqrt(this.c-this.ns0*this.qs0)/this.ns0;},forward:function(p){var lon=p.x;var lat=p.y;this.sin_phi=Math.sin(lat);this.cos_phi=Math.cos(lat);var qs=Proj4js.common.qsfnz(this.e3,this.sin_phi,this.cos_phi);var rh1=this.a*Math.sqrt(this.c-this.ns0*qs)/this.ns0;var theta=this.ns0*Proj4js.common.adjust_lon(lon-this.long0);var x=rh1*Math.sin(theta)+this.x0;var y=this.rh-rh1*Math.cos(theta)+this.y0;p.x=x;p.y=y;return p;},inverse:function(p){var rh1,qs,con,theta,lon,lat;p.x-=this.x0;p.y=this.rh-p.y+this.y0;if(this.ns0>=0){rh1=Math.sqrt(p.x*p.x+p.y*p.y);con=1.0;}else{rh1=-Math.sqrt(p.x*p.x+p.y*p.y);con=-1.0;} |
| 128 | | theta=0.0;if(rh1!=0.0){theta=Math.atan2(con*p.x,con*p.y);} |
| 129 | | con=rh1*this.ns0/this.a;qs=(this.c-con*con)/this.ns0;if(this.e3>=1e-10){con=1-.5*(1.0-this.es)*Math.log((1.0-this.e3)/(1.0+this.e3))/this.e3;if(Math.abs(Math.abs(con)-Math.abs(qs))>.0000000001){lat=this.phi1z(this.e3,qs);}else{if(qs>=0){lat=.5*PI;}else{lat=-.5*PI;}}}else{lat=this.phi1z(e3,qs);} |
| 130 | | lon=Proj4js.common.adjust_lon(theta/this.ns0+this.long0);p.x=lon;p.y=lat;return p;},phi1z:function(eccent,qs){var con,com,dphi;var phi=Proj4js.common.asinz(.5*qs);if(eccent<Proj4js.common.EPSLN)return phi;var eccnts=eccent*eccent;for(var i=1;i<=25;i++){sinphi=Math.sin(phi);cosphi=Math.cos(phi);con=eccent*sinphi;com=1.0-con*con;dphi=.5*com*com/cosphi*(qs/(1.0-eccnts)-sinphi/com+.5/eccent*Math.log((1.0-con)/(1.0+con)));phi=phi+dphi;if(Math.abs(dphi)<=1e-7)return phi;} |
| 131 | | Proj4js.reportError("aea:phi1z:Convergence error");return null;}};Proj4js.Proj.sterea={dependsOn:'gauss',init:function(){Proj4js.Proj['gauss'].init.apply(this);if(!this.rc){Proj4js.reportError("sterea:init:E_ERROR_0");return;} |
| 132 | | this.sinc0=Math.sin(this.phic0);this.cosc0=Math.cos(this.phic0);this.R2=2.0*this.rc;if(!this.title)this.title="Oblique Stereographic Alternative";},forward:function(p){p.x=Proj4js.common.adjust_lon(p.x-this.long0);Proj4js.Proj['gauss'].forward.apply(this,[p]);sinc=Math.sin(p.y);cosc=Math.cos(p.y);cosl=Math.cos(p.x);k=this.k0*this.R2/(1.0+this.sinc0*sinc+this.cosc0*cosc*cosl);p.x=k*cosc*Math.sin(p.x);p.y=k*(this.cosc0*sinc-this.sinc0*cosc*cosl);p.x=this.a*p.x+this.x0;p.y=this.a*p.y+this.y0;return p;},inverse:function(p){var lon,lat;p.x=(p.x-this.x0)/this.a;p.y=(p.y-this.y0)/this.a;p.x/=this.k0;p.y/=this.k0;if((rho=Math.sqrt(p.x*p.x+p.y*p.y))){c=2.0*Math.atan2(rho,this.R2);sinc=Math.sin(c);cosc=Math.cos(c);lat=Math.asin(cosc*this.sinc0+p.y*sinc*this.cosc0/rho);lon=Math.atan2(p.x*sinc,rho*this.cosc0*cosc-p.y*this.sinc0*sinc);}else{lat=this.phic0;lon=0.;} |
| 133 | | p.x=lon;p.y=lat;Proj4js.Proj['gauss'].inverse.apply(this,[p]);p.x=Proj4js.common.adjust_lon(p.x+this.long0);return p;}};function phi4z(eccent,e0,e1,e2,e3,a,b,c,phi){var sinphi,sin2ph,tanph,ml,mlp,con1,con2,con3,dphi,i;phi=a;for(i=1;i<=15;i++){sinphi=Math.sin(phi);tanphi=Math.tan(phi);c=tanphi*Math.sqrt(1.0-eccent*sinphi*sinphi);sin2ph=Math.sin(2.0*phi);ml=e0*phi-e1*sin2ph+e2*Math.sin(4.0*phi)-e3*Math.sin(6.0*phi);mlp=e0-2.0*e1*Math.cos(2.0*phi)+4.0*e2*Math.cos(4.0*phi)-6.0*e3*Math.cos(6.0*phi);con1=2.0*ml+c*(ml*ml+b)-2.0*a*(c*ml+1.0);con2=eccent*sin2ph*(ml*ml+b-2.0*a*ml)/(2.0*c);con3=2.0*(a-ml)*(c*mlp-2.0/sin2ph)-2.0*mlp;dphi=con1/(con2+con3);phi+=dphi;if(Math.abs(dphi)<=.0000000001)return(phi);} |
| 134 | | Proj4js.reportError("phi4z: No convergence");return null;} |
| 135 | | function e4fn(x){var con,com;con=1.0+x;com=1.0-x;return(Math.sqrt((Math.pow(con,con))*(Math.pow(com,com))));} |
| 136 | | Proj4js.Proj.poly={init:function(){var temp;if(this.lat0=0)this.lat0=90;this.temp=this.b/this.a;this.es=1.0-Math.pow(this.temp,2);this.e=Math.sqrt(this.es);this.e0=Proj4js.common.e0fn(this.es);this.e1=Proj4js.common.e1fn(this.es);this.e2=Proj4js.common.e2fn(this.es);this.e3=Proj4js.common.e3fn(this.es);this.ml0=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,this.lat0);},forward:function(p){var sinphi,cosphi;var al;var c;var con,ml;var ms;var x,y;var lon=p.x;var lat=p.y;con=Proj4js.common.adjust_lon(lon-this.long0);if(Math.abs(lat)<=.0000001){x=this.x0+this.a*con;y=this.y0-this.a*this.ml0;}else{sinphi=Math.sin(lat);cosphi=Math.cos(lat);ml=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,lat);ms=Proj4js.common.msfnz(this.e,sinphi,cosphi);con=sinphi;x=this.x0+this.a*ms*Math.sin(con)/sinphi;y=this.y0+this.a*(ml-this.ml0+ms*(1.0-Math.cos(con))/sinphi);} |
| 137 | | p.x=x;p.y=y;return p;},inverse:function(p){var sin_phi,cos_phi;var al;var b;var c;var con,ml;var iflg;var lon,lat;p.x-=this.x0;p.y-=this.y0;al=this.ml0+p.y/this.a;iflg=0;if(Math.abs(al)<=.0000001){lon=p.x/this.a+this.long0;lat=0.0;}else{b=al*al+(p.x/this.a)*(p.x/this.a);iflg=phi4z(this.es,this.e0,this.e1,this.e2,this.e3,this.al,b,c,lat);if(iflg!=1)return(iflg);lon=Proj4js.common.adjust_lon((Proj4js.common.asinz(p.x*c/this.a)/Math.sin(lat))+this.long0);} |
| 138 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.equi={init:function(){if(!this.x0)this.x0=0;if(!this.y0)this.y0=0;if(!this.lat0)this.lat0=0;if(!this.long0)this.long0=0;},forward:function(p){var lon=p.x;var lat=p.y;var dlon=Proj4js.common.adjust_lon(lon-this.long0);var x=this.x0+this.a*dlon*Math.cos(this.lat0);var y=this.y0+this.a*lat;this.t1=x;this.t2=Math.cos(this.lat0);p.x=x;p.y=y;return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var lat=p.y/this.a;if(Math.abs(lat)>Proj4js.common.HALF_PI){Proj4js.reportError("equi:Inv:DataError");} |
| 139 | | var lon=Proj4js.common.adjust_lon(this.long0+p.x/(this.a*Math.cos(this.lat0)));p.x=lon;p.y=lat;}};Proj4js.Proj.merc={init:function(){if(this.lat_ts){if(this.sphere){this.k0=Math.cos(this.lat_ts);}else{this.k0=Proj4js.common.msfnz(this.es,Math.sin(this.lat_ts),Math.cos(this.lat_ts));}}},forward:function(p){var lon=p.x;var lat=p.y;if(lat*Proj4js.common.R2D>90.0&&lat*Proj4js.common.R2D<-90.0&&lon*Proj4js.common.R2D>180.0&&lon*Proj4js.common.R2D<-180.0){Proj4js.reportError("merc:forward: llInputOutOfRange: "+lon+" : "+lat);return null;} |
| 140 | | var x,y;if(Math.abs(Math.abs(lat)-Proj4js.common.HALF_PI)<=Proj4js.common.EPSLN){Proj4js.reportError("merc:forward: ll2mAtPoles");return null;}else{if(this.sphere){x=this.x0+this.a*this.k0*Proj4js.common.adjust_lon(lon-this.long0);y=this.y0+this.a*this.k0*Math.log(Math.tan(Proj4js.common.FORTPI+0.5*lat));}else{var sinphi=Math.sin(lat);var ts=Proj4js.common.tsfnz(this.e,lat,sinphi);x=this.x0+this.a*this.k0*Proj4js.common.adjust_lon(lon-this.long0);y=this.y0-this.a*this.k0*Math.log(ts);} |
| 141 | | p.x=x;p.y=y;return p;}},inverse:function(p){var x=p.x-this.x0;var y=p.y-this.y0;var lon,lat;if(this.sphere){lat=Proj4js.common.HALF_PI-2.0*Math.atan(Math.exp(-y/this.a*this.k0));}else{var ts=Math.exp(-y/(this.a*this.k0));lat=Proj4js.common.phi2z(this.e,ts);if(lat==-9999){Proj4js.reportError("merc:inverse: lat = -9999");return null;}} |
| 142 | | lon=Proj4js.common.adjust_lon(this.long0+x/(this.a*this.k0));p.x=lon;p.y=lat;return p;}};Proj4js.Proj.utm={dependsOn:'tmerc',init:function(){if(!this.zone){Proj4js.reportError("utm:init: zone must be specified for UTM");return;} |
| 143 | | this.lat0=0.0;this.long0=((6*Math.abs(this.zone))-183)*Proj4js.common.D2R;this.x0=500000.0;this.y0=this.utmSouth?10000000.0:0.0;this.k0=0.9996;Proj4js.Proj['tmerc'].init.apply(this);this.forward=Proj4js.Proj['tmerc'].forward;this.inverse=Proj4js.Proj['tmerc'].inverse;}};Proj4js.Proj.eqdc={init:function(){if(!this.mode)this.mode=0;this.temp=this.b/this.a;this.es=1.0-Math.pow(this.temp,2);this.e=Math.sqrt(this.es);this.e0=Proj4js.common.e0fn(this.es);this.e1=Proj4js.common.e1fn(this.es);this.e2=Proj4js.common.e2fn(this.es);this.e3=Proj4js.common.e3fn(this.es);this.sinphi=Math.sin(this.lat1);this.cosphi=Math.cos(this.lat1);this.ms1=Proj4js.common.msfnz(this.e,this.sinphi,this.cosphi);this.ml1=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,this.lat1);if(this.mode!=0){if(Math.abs(this.lat1+this.lat2)<Proj4js.common.EPSLN){Proj4js.reportError("eqdc:Init:EqualLatitudes");} |
| 144 | | this.sinphi=Math.sin(this.lat2);this.cosphi=Math.cos(this.lat2);this.ms2=Proj4js.common.msfnz(this.e,this.sinphi,this.cosphi);this.ml2=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,this.lat2);if(Math.abs(this.lat1-this.lat2)>=Proj4js.common.EPSLN){this.ns=(this.ms1-this.ms2)/(this.ml2-this.ml1);}else{this.ns=this.sinphi;}}else{this.ns=this.sinphi;} |
| 145 | | this.g=this.ml1+this.ms1/this.ns;this.ml0=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,this.lat0);this.rh=this.a*(this.g-this.ml0);},forward:function(p){var lon=p.x;var lat=p.y;var ml=Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,lat);var rh1=this.a*(this.g-ml);var theta=this.ns*Proj4js.common.adjust_lon(lon-this.long0);var x=this.x0+rh1*Math.sin(theta);var y=this.y0+this.rh-rh1*Math.cos(theta);p.x=x;p.y=y;return p;},inverse:function(p){p.x-=this.x0;p.y=this.rh-p.y+this.y0;var con,rh1;if(this.ns>=0){var rh1=Math.sqrt(p.x*p.x+p.y*p.y);var con=1.0;}else{rh1=-Math.sqrt(p.x*p.x+p.y*p.y);con=-1.0;} |
| 146 | | var theta=0.0;if(rh1!=0.0)theta=Math.atan2(con*p.x,con*p.y);var ml=this.g-rh1/this.a;var lat=this.phi3z(this.ml,this.e0,this.e1,this.e2,this.e3);var lon=Proj4js.common.adjust_lon(this.long0+theta/this.ns);p.x=lon;p.y=lat;return p;},phi3z:function(ml,e0,e1,e2,e3){var phi;var dphi;phi=ml;for(var i=0;i<15;i++){dphi=(ml+e1*Math.sin(2.0*phi)-e2*Math.sin(4.0*phi)+e3*Math.sin(6.0*phi))/e0-phi;phi+=dphi;if(Math.abs(dphi)<=.0000000001){return phi;}} |
| 147 | | Proj4js.reportError("PHI3Z-CONV:Latitude failed to converge after 15 iterations");return null;}};Proj4js.Proj.tmerc={init:function(){this.e0=Proj4js.common.e0fn(this.es);this.e1=Proj4js.common.e1fn(this.es);this.e2=Proj4js.common.e2fn(this.es);this.e3=Proj4js.common.e3fn(this.es);this.ml0=this.a*Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,this.lat0);},forward:function(p){var lon=p.x;var lat=p.y;var delta_lon=Proj4js.common.adjust_lon(lon-this.long0);var con;var x,y;var sin_phi=Math.sin(lat);var cos_phi=Math.cos(lat);if(this.sphere){var b=cos_phi*Math.sin(delta_lon);if((Math.abs(Math.abs(b)-1.0))<.0000000001){Proj4js.reportError("tmerc:forward: Point projects into infinity");return(93);}else{x=.5*this.a*this.k0*Math.log((1.0+b)/(1.0-b));con=Math.acos(cos_phi*Math.cos(delta_lon)/Math.sqrt(1.0-b*b));if(lat<0)con=-con;y=this.a*this.k0*(con-this.lat0);}}else{var al=cos_phi*delta_lon;var als=Math.pow(al,2);var c=this.ep2*Math.pow(cos_phi,2);var tq=Math.tan(lat);var t=Math.pow(tq,2);con=1.0-this.es*Math.pow(sin_phi,2);var n=this.a/Math.sqrt(con);var ml=this.a*Proj4js.common.mlfn(this.e0,this.e1,this.e2,this.e3,lat);x=this.k0*n*al*(1.0+als/6.0*(1.0-t+c+als/20.0*(5.0-18.0*t+Math.pow(t,2)+72.0*c-58.0*this.ep2)))+this.x0;y=this.k0*(ml-this.ml0+n*tq*(als*(0.5+als/24.0*(5.0-t+9.0*c+4.0*Math.pow(c,2)+als/30.0*(61.0-58.0*t+Math.pow(t,2)+600.0*c-330.0*this.ep2)))))+this.y0;} |
| 148 | | p.x=x;p.y=y;return p;},inverse:function(p){var con,phi;var delta_phi;var i;var max_iter=6;var lat,lon;if(this.sphere){var f=Math.exp(p.x/(this.a*this.k0));var g=.5*(f-1/f);var temp=this.lat0+p.y/(this.a*this.k0);var h=Math.cos(temp);con=Math.sqrt((1.0-h*h)/(1.0+g*g));lat=Proj4js.common.asinz(con);if(temp<0) |
| 149 | | lat=-lat;if((g==0)&&(h==0)){lon=this.long0;}else{lon=Proj4js.common.adjust_lon(Math.atan2(g,h)+this.long0);}}else{var x=p.x-this.x0;var y=p.y-this.y0;con=(this.ml0+y/this.k0)/this.a;phi=con;for(i=0;true;i++){delta_phi=((con+this.e1*Math.sin(2.0*phi)-this.e2*Math.sin(4.0*phi)+this.e3*Math.sin(6.0*phi))/this.e0)-phi;phi+=delta_phi;if(Math.abs(delta_phi)<=Proj4js.common.EPSLN)break;if(i>=max_iter){Proj4js.reportError("tmerc:inverse: Latitude failed to converge");return(95);}} |
| 150 | | if(Math.abs(phi)<Proj4js.common.HALF_PI){var sin_phi=Math.sin(phi);var cos_phi=Math.cos(phi);var tan_phi=Math.tan(phi);var c=this.ep2*Math.pow(cos_phi,2);var cs=Math.pow(c,2);var t=Math.pow(tan_phi,2);var ts=Math.pow(t,2);con=1.0-this.es*Math.pow(sin_phi,2);var n=this.a/Math.sqrt(con);var r=n*(1.0-this.es)/con;var d=x/(n*this.k0);var ds=Math.pow(d,2);lat=phi-(n*tan_phi*ds/r)*(0.5-ds/24.0*(5.0+3.0*t+10.0*c-4.0*cs-9.0*this.ep2-ds/30.0*(61.0+90.0*t+298.0*c+45.0*ts-252.0*this.ep2-3.0*cs)));lon=Proj4js.common.adjust_lon(this.long0+(d*(1.0-ds/6.0*(1.0+2.0*t+c-ds/20.0*(5.0-2.0*c+28.0*t-3.0*cs+8.0*this.ep2+24.0*ts)))/cos_phi));}else{lat=Proj4js.common.HALF_PI*Proj4js.common.sign(y);lon=this.long0;}} |
| 151 | | p.x=lon;p.y=lat;return p;}};Proj4js.defs["GOOGLE"]="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs";Proj4js.defs["EPSG:900913"]=Proj4js.defs["GOOGLE"];Proj4js.Proj.gstmerc={init:function(){var temp=this.b/this.a;this.e=Math.sqrt(1.0-temp*temp);this.lc=this.long0;this.rs=Math.sqrt(1.0+this.e*this.e*Math.pow(Math.cos(this.lat0),4.0)/(1.0-this.e*this.e));var sinz=Math.sin(this.lat0);var pc=Math.asin(sinz/this.rs);var sinzpc=Math.sin(pc);this.cp=Proj4js.common.latiso(0.0,pc,sinzpc)-this.rs*Proj4js.common.latiso(this.e,this.lat0,sinz);this.n2=this.k0*this.a*Math.sqrt(1.0-this.e*this.e)/(1.0-this.e*this.e*sinz*sinz);this.xs=this.x0;this.ys=this.y0-this.n2*pc;if(!this.title)this.title="Gauss Schreiber transverse mercator";},forward:function(p){var lon=p.x;var lat=p.y;var L=this.rs*(lon-this.lc);var Ls=this.cp+(this.rs*Proj4js.common.latiso(this.e,lat,Math.sin(lat)));var lat1=Math.asin(Math.sin(L)/Proj4js.common.cosh(Ls));var Ls1=Proj4js.common.latiso(0.0,lat1,Math.sin(lat1));p.x=this.xs+(this.n2*Ls1);p.y=this.ys+(this.n2*Math.atan(Proj4js.common.sinh(Ls)/Math.cos(L)));return p;},inverse:function(p){var x=p.x;var y=p.y;var L=Math.atan(Proj4js.common.sinh((x-this.xs)/this.n2)/Math.cos((y-this.ys)/this.n2));var lat1=Math.asin(Math.sin((y-this.ys)/this.n2)/Proj4js.common.cosh((x-this.xs)/this.n2));var LC=Proj4js.common.latiso(0.0,lat1,Math.sin(lat1));p.x=this.lc+L/this.rs;p.y=Proj4js.common.invlatiso(this.e,(LC-this.cp)/this.rs);return p;}};Proj4js.Proj.ortho={init:function(def){;this.sin_p14=Math.sin(this.lat0);this.cos_p14=Math.cos(this.lat0);},forward:function(p){var sinphi,cosphi;var dlon;var coslon;var ksp;var g;var lon=p.x;var lat=p.y;dlon=Proj4js.common.adjust_lon(lon-this.long0);sinphi=Math.sin(lat);cosphi=Math.cos(lat);coslon=Math.cos(dlon);g=this.sin_p14*sinphi+this.cos_p14*cosphi*coslon;ksp=1.0;if((g>0)||(Math.abs(g)<=Proj4js.common.EPSLN)){var x=this.a*ksp*cosphi*Math.sin(dlon);var y=this.y0+this.a*ksp*(this.cos_p14*sinphi-this.sin_p14*cosphi*coslon);}else{Proj4js.reportError("orthoFwdPointError");} |
| 152 | | p.x=x;p.y=y;return p;},inverse:function(p){var rh;var z;var sinz,cosz;var temp;var con;var lon,lat;p.x-=this.x0;p.y-=this.y0;rh=Math.sqrt(p.x*p.x+p.y*p.y);if(rh>this.a+.0000001){Proj4js.reportError("orthoInvDataError");} |
| 153 | | z=Proj4js.common.asinz(rh/this.a);sinz=Math.sin(z);cosz=Math.cos(z);lon=this.long0;if(Math.abs(rh)<=Proj4js.common.EPSLN){lat=this.lat0;} |
| 154 | | lat=Proj4js.common.asinz(cosz*this.sin_p14+(p.y*sinz*this.cos_p14)/rh);con=Math.abs(lat0)-Proj4js.common.HALF_PI;if(Math.abs(con)<=Proj4js.common.EPSLN){if(this.lat0>=0){lon=Proj4js.common.adjust_lon(this.long0+Math.atan2(p.x,-p.y));}else{lon=Proj4js.common.adjust_lon(this.long0-Math.atan2(-p.x,p.y));}} |
| 155 | | con=cosz-this.sin_p14*Math.sin(lat);if((Math.abs(con)>=Proj4js.common.EPSLN)||(Math.abs(x)>=Proj4js.common.EPSLN)){lon=Proj4js.common.adjust_lon(this.long0+Math.atan2((p.x*sinz*this.cos_p14),(con*rh)));} |
| 156 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.somerc={init:function(){var phy0=this.lat0;this.lambda0=this.long0;var sinPhy0=Math.sin(phy0);var semiMajorAxis=this.a;var invF=this.rf;var flattening=1/invF;var e2=2*flattening-Math.pow(flattening,2);var e=this.e=Math.sqrt(e2);this.R=semiMajorAxis*Math.sqrt(1-e2)/(1-e2*Math.pow(sinPhy0,2.0));this.alpha=Math.sqrt(1+e2/(1-e2)*Math.pow(Math.cos(phy0),4.0));this.b0=Math.asin(sinPhy0/this.alpha);this.K=Math.log(Math.tan(Math.PI/4.0+this.b0/2.0)) |
| 157 | | -this.alpha*Math.log(Math.tan(Math.PI/4.0+phy0/2.0)) |
| 158 | | +this.alpha*e/2*Math.log((1+e*sinPhy0)/(1-e*sinPhy0));},forward:function(p){var Sa1=Math.log(Math.tan(Math.PI/4.0-p.y/2.0));var Sa2=this.e/2.0*Math.log((1+this.e*Math.sin(p.y))/(1-this.e*Math.sin(p.y)));var S=-this.alpha*(Sa1+Sa2)+this.K;var b=2.0*(Math.atan(Math.exp(S))-Math.PI/4.0);var I=this.alpha*(p.x-this.lambda0);var rotI=Math.atan(Math.sin(I)/(Math.sin(this.b0)*Math.tan(b)+ |
| 159 | | Math.cos(this.b0)*Math.cos(I)));var rotB=Math.asin(Math.cos(this.b0)*Math.sin(b)- |
| 160 | | Math.sin(this.b0)*Math.cos(b)*Math.cos(I));p.y=this.R/2.0*Math.log((1+Math.sin(rotB))/(1-Math.sin(rotB))) |
| 161 | | +this.y0;p.x=this.R*rotI+this.x0;return p;},inverse:function(p){var Y=p.x-this.x0;var X=p.y-this.y0;var rotI=Y/this.R;var rotB=2*(Math.atan(Math.exp(X/this.R))-Math.PI/4.0);var b=Math.asin(Math.cos(this.b0)*Math.sin(rotB) |
| 162 | | +Math.sin(this.b0)*Math.cos(rotB)*Math.cos(rotI));var I=Math.atan(Math.sin(rotI)/(Math.cos(this.b0)*Math.cos(rotI)-Math.sin(this.b0)*Math.tan(rotB)));var lambda=this.lambda0+I/this.alpha;var S=0.0;var phy=b;var prevPhy=-1000.0;var iteration=0;while(Math.abs(phy-prevPhy)>0.0000001) |
| 163 | | {if(++iteration>20) |
| 164 | | {Proj4js.reportError("omercFwdInfinity");return;} |
| 165 | | S=1.0/this.alpha*(Math.log(Math.tan(Math.PI/4.0+b/2.0))-this.K) |
| 166 | | +this.e*Math.log(Math.tan(Math.PI/4.0 |
| 167 | | +Math.asin(this.e*Math.sin(phy))/2.0));prevPhy=phy;phy=2.0*Math.atan(Math.exp(S))-Math.PI/2.0;} |
| 168 | | p.x=lambda;p.y=phy;return p;}};Proj4js.Proj.stere={ssfn_:function(phit,sinphi,eccen){sinphi*=eccen;return(Math.tan(.5*(Proj4js.common.HALF_PI+phit))*Math.pow((1.-sinphi)/(1.+sinphi),.5*eccen));},TOL:1.e-8,NITER:8,CONV:1.e-10,S_POLE:0,N_POLE:1,OBLIQ:2,EQUIT:3,init:function(){this.phits=this.lat_ts?this.lat_ts:Proj4js.common.HALF_PI;var t=Math.abs(this.lat0);if((Math.abs(t)-Proj4js.common.HALF_PI)<Proj4js.common.EPSLN){this.mode=this.lat0<0.?this.S_POLE:this.N_POLE;}else{this.mode=t>Proj4js.common.EPSLN?this.OBLIQ:this.EQUIT;} |
| 169 | | this.phits=Math.abs(this.phits);if(this.es){var X;switch(this.mode){case this.N_POLE:case this.S_POLE:if(Math.abs(this.phits-Proj4js.common.HALF_PI)<Proj4js.common.EPSLN){this.akm1=2.*this.k0/Math.sqrt(Math.pow(1+this.e,1+this.e)*Math.pow(1-this.e,1-this.e));}else{t=Math.sin(this.phits);this.akm1=Math.cos(this.phits)/Proj4js.common.tsfnz(this.e,this.phits,t);t*=this.e;this.akm1/=Math.sqrt(1.-t*t);} |
| 170 | | break;case this.EQUIT:this.akm1=2.*this.k0;break;case this.OBLIQ:t=Math.sin(this.lat0);X=2.*Math.atan(this.ssfn_(this.lat0,t,this.e))-Proj4js.common.HALF_PI;t*=this.e;this.akm1=2.*this.k0*Math.cos(this.lat0)/Math.sqrt(1.-t*t);this.sinX1=Math.sin(X);this.cosX1=Math.cos(X);break;}}else{switch(this.mode){case this.OBLIQ:this.sinph0=Math.sin(this.lat0);this.cosph0=Math.cos(this.lat0);case this.EQUIT:this.akm1=2.*this.k0;break;case this.S_POLE:case this.N_POLE:this.akm1=Math.abs(this.phits-Proj4js.common.HALF_PI)>=Proj4js.common.EPSLN?Math.cos(this.phits)/Math.tan(Proj4js.common.FORTPI-.5*this.phits):2.*this.k0;break;}}},forward:function(p){var lon=p.x;lon=Proj4js.common.adjust_lon(lon-this.long0);var lat=p.y;var x,y;if(this.sphere){var sinphi,cosphi,coslam,sinlam;sinphi=Math.sin(lat);cosphi=Math.cos(lat);coslam=Math.cos(lon);sinlam=Math.sin(lon);switch(this.mode){case this.EQUIT:y=1.+cosphi*coslam;if(y<=Proj4js.common.EPSLN){F_ERROR;} |
| 171 | | y=this.akm1/y;x=y*cosphi*sinlam;y*=sinphi;break;case this.OBLIQ:y=1.+this.sinph0*sinphi+this.cosph0*cosphi*coslam;if(y<=Proj4js.common.EPSLN){F_ERROR;} |
| 172 | | y=this.akm1/y;x=y*cosphi*sinlam;y*=this.cosph0*sinphi-this.sinph0*cosphi*coslam;break;case this.N_POLE:coslam=-coslam;lat=-lat;case this.S_POLE:if(Math.abs(lat-Proj4js.common.HALF_PI)<this.TOL){F_ERROR;} |
| 173 | | y=this.akm1*Math.tan(Proj4js.common.FORTPI+.5*lat);x=sinlam*y;y*=coslam;break;}}else{coslam=Math.cos(lon);sinlam=Math.sin(lon);sinphi=Math.sin(lat);if(this.mode==this.OBLIQ||this.mode==this.EQUIT){X=2.*Math.atan(this.ssfn_(lat,sinphi,this.e));sinX=Math.sin(X-Proj4js.common.HALF_PI);cosX=Math.cos(X);} |
| 174 | | switch(this.mode){case this.OBLIQ:A=this.akm1/(this.cosX1*(1.+this.sinX1*sinX+this.cosX1*cosX*coslam));y=A*(this.cosX1*sinX-this.sinX1*cosX*coslam);x=A*cosX;break;case this.EQUIT:A=2.*this.akm1/(1.+cosX*coslam);y=A*sinX;x=A*cosX;break;case this.S_POLE:lat=-lat;coslam=-coslam;sinphi=-sinphi;case this.N_POLE:x=this.akm1*Proj4js.common.tsfnz(this.e,lat,sinphi);y=-x*coslam;break;} |
| 175 | | x=x*sinlam;} |
| 176 | | p.x=x*this.a+this.x0;p.y=y*this.a+this.y0;return p;},inverse:function(p){var x=(p.x-this.x0)/this.a;var y=(p.y-this.y0)/this.a;var lon,lat;var cosphi,sinphi,tp=0.0,phi_l=0.0,rho,halfe=0.0,pi2=0.0;var i;if(this.sphere){var c,rh,sinc,cosc;rh=Math.sqrt(x*x+y*y);c=2.*Math.atan(rh/this.akm1);sinc=Math.sin(c);cosc=Math.cos(c);lon=0.;switch(this.mode){case this.EQUIT:if(Math.abs(rh)<=Proj4js.common.EPSLN){lat=0.;}else{lat=Math.asin(y*sinc/rh);} |
| 177 | | if(cosc!=0.||x!=0.)lon=Math.atan2(x*sinc,cosc*rh);break;case this.OBLIQ:if(Math.abs(rh)<=Proj4js.common.EPSLN){lat=this.phi0;}else{lat=Math.asin(cosc*sinph0+y*sinc*cosph0/rh);} |
| 178 | | c=cosc-sinph0*Math.sin(lat);if(c!=0.||x!=0.){lon=Math.atan2(x*sinc*cosph0,c*rh);} |
| 179 | | break;case this.N_POLE:y=-y;case this.S_POLE:if(Math.abs(rh)<=Proj4js.common.EPSLN){lat=this.phi0;}else{lat=Math.asin(this.mode==this.S_POLE?-cosc:cosc);} |
| 180 | | lon=(x==0.&&y==0.)?0.:Math.atan2(x,y);break;}}else{rho=Math.sqrt(x*x+y*y);switch(this.mode){case this.OBLIQ:case this.EQUIT:tp=2.*Math.atan2(rho*this.cosX1,this.akm1);cosphi=Math.cos(tp);sinphi=Math.sin(tp);if(rho==0.0){phi_l=Math.asin(cosphi*this.sinX1);}else{phi_l=Math.asin(cosphi*this.sinX1+(y*sinphi*this.cosX1/rho));} |
| 181 | | tp=Math.tan(.5*(Proj4js.common.HALF_PI+phi_l));x*=sinphi;y=rho*this.cosX1*cosphi-y*this.sinX1*sinphi;pi2=Proj4js.common.HALF_PI;halfe=.5*this.e;break;case this.N_POLE:y=-y;case this.S_POLE:tp=-rho/this.akm1;phi_l=Proj4js.common.HALF_PI-2.*Math.atan(tp);pi2=-Proj4js.common.HALF_PI;halfe=-.5*this.e;break;} |
| 182 | | for(i=this.NITER;i--;phi_l=lat){sinphi=this.e*Math.sin(phi_l);lat=2.*Math.atan(tp*Math.pow((1.+sinphi)/(1.-sinphi),halfe))-pi2;if(Math.abs(phi_l-lat)<this.CONV){if(this.mode==this.S_POLE)lat=-lat;lon=(x==0.&&y==0.)?0.:Math.atan2(x,y);p.x=Proj4js.common.adjust_lon(lon+this.long0);p.y=lat;return p;}}}}};Proj4js.Proj.nzmg={iterations:1,init:function(){this.A=new Array();this.A[1]=+0.6399175073;this.A[2]=-0.1358797613;this.A[3]=+0.063294409;this.A[4]=-0.02526853;this.A[5]=+0.0117879;this.A[6]=-0.0055161;this.A[7]=+0.0026906;this.A[8]=-0.001333;this.A[9]=+0.00067;this.A[10]=-0.00034;this.B_re=new Array();this.B_im=new Array();this.B_re[1]=+0.7557853228;this.B_im[1]=0.0;this.B_re[2]=+0.249204646;this.B_im[2]=+0.003371507;this.B_re[3]=-0.001541739;this.B_im[3]=+0.041058560;this.B_re[4]=-0.10162907;this.B_im[4]=+0.01727609;this.B_re[5]=-0.26623489;this.B_im[5]=-0.36249218;this.B_re[6]=-0.6870983;this.B_im[6]=-1.1651967;this.C_re=new Array();this.C_im=new Array();this.C_re[1]=+1.3231270439;this.C_im[1]=0.0;this.C_re[2]=-0.577245789;this.C_im[2]=-0.007809598;this.C_re[3]=+0.508307513;this.C_im[3]=-0.112208952;this.C_re[4]=-0.15094762;this.C_im[4]=+0.18200602;this.C_re[5]=+1.01418179;this.C_im[5]=+1.64497696;this.C_re[6]=+1.9660549;this.C_im[6]=+2.5127645;this.D=new Array();this.D[1]=+1.5627014243;this.D[2]=+0.5185406398;this.D[3]=-0.03333098;this.D[4]=-0.1052906;this.D[5]=-0.0368594;this.D[6]=+0.007317;this.D[7]=+0.01220;this.D[8]=+0.00394;this.D[9]=-0.0013;},forward:function(p){var lon=p.x;var lat=p.y;var delta_lat=lat-this.lat0;var delta_lon=lon-this.long0;var d_phi=delta_lat/Proj4js.common.SEC_TO_RAD*1E-5;var d_lambda=delta_lon;var d_phi_n=1;var d_psi=0;for(n=1;n<=10;n++){d_phi_n=d_phi_n*d_phi;d_psi=d_psi+this.A[n]*d_phi_n;} |
| 183 | | var th_re=d_psi;var th_im=d_lambda;var th_n_re=1;var th_n_im=0;var th_n_re1;var th_n_im1;var z_re=0;var z_im=0;for(n=1;n<=6;n++){th_n_re1=th_n_re*th_re-th_n_im*th_im;th_n_im1=th_n_im*th_re+th_n_re*th_im;th_n_re=th_n_re1;th_n_im=th_n_im1;z_re=z_re+this.B_re[n]*th_n_re-this.B_im[n]*th_n_im;z_im=z_im+this.B_im[n]*th_n_re+this.B_re[n]*th_n_im;} |
| 184 | | x=(z_im*this.a)+this.x0;y=(z_re*this.a)+this.y0;p.x=x;p.y=y;return p;},inverse:function(p){var x=p.x;var y=p.y;var delta_x=x-this.x0;var delta_y=y-this.y0;var z_re=delta_y/this.a;var z_im=delta_x/this.a;var z_n_re=1;var z_n_im=0;var z_n_re1;var z_n_im1;var th_re=0;var th_im=0;for(n=1;n<=6;n++){z_n_re1=z_n_re*z_re-z_n_im*z_im;z_n_im1=z_n_im*z_re+z_n_re*z_im;z_n_re=z_n_re1;z_n_im=z_n_im1;th_re=th_re+this.C_re[n]*z_n_re-this.C_im[n]*z_n_im;th_im=th_im+this.C_im[n]*z_n_re+this.C_re[n]*z_n_im;} |
| 185 | | for(i=0;i<this.iterations;i++){var th_n_re=th_re;var th_n_im=th_im;var th_n_re1;var th_n_im1;var num_re=z_re;var num_im=z_im;for(n=2;n<=6;n++){th_n_re1=th_n_re*th_re-th_n_im*th_im;th_n_im1=th_n_im*th_re+th_n_re*th_im;th_n_re=th_n_re1;th_n_im=th_n_im1;num_re=num_re+(n-1)*(this.B_re[n]*th_n_re-this.B_im[n]*th_n_im);num_im=num_im+(n-1)*(this.B_im[n]*th_n_re+this.B_re[n]*th_n_im);} |
| 186 | | th_n_re=1;th_n_im=0;var den_re=this.B_re[1];var den_im=this.B_im[1];for(n=2;n<=6;n++){th_n_re1=th_n_re*th_re-th_n_im*th_im;th_n_im1=th_n_im*th_re+th_n_re*th_im;th_n_re=th_n_re1;th_n_im=th_n_im1;den_re=den_re+n*(this.B_re[n]*th_n_re-this.B_im[n]*th_n_im);den_im=den_im+n*(this.B_im[n]*th_n_re+this.B_re[n]*th_n_im);} |
| 187 | | var den2=den_re*den_re+den_im*den_im;th_re=(num_re*den_re+num_im*den_im)/den2;th_im=(num_im*den_re-num_re*den_im)/den2;} |
| 188 | | var d_psi=th_re;var d_lambda=th_im;var d_psi_n=1;var d_phi=0;for(n=1;n<=9;n++){d_psi_n=d_psi_n*d_psi;d_phi=d_phi+this.D[n]*d_psi_n;} |
| 189 | | var lat=this.lat0+(d_phi*Proj4js.common.SEC_TO_RAD*1E5);var lon=this.long0+d_lambda;p.x=lon;p.y=lat;return p;}};Proj4js.Proj.mill={init:function(){},forward:function(p){var lon=p.x;var lat=p.y;var dlon=Proj4js.common.adjust_lon(lon-this.long0);var x=this.x0+this.a*dlon;var y=this.y0+this.a*Math.log(Math.tan((Proj4js.common.PI/4.0)+(lat/2.5)))*1.25;p.x=x;p.y=y;return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var lon=Proj4js.common.adjust_lon(this.long0+p.x/this.a);var lat=2.5*(Math.atan(Math.exp(0.8*p.y/this.a))-Proj4js.common.PI/4.0);p.x=lon;p.y=lat;return p;}};Proj4js.Proj.gnom={init:function(def){this.sin_p14=Math.sin(this.lat0);this.cos_p14=Math.cos(this.lat0);this.infinity_dist=1000*this.a;},forward:function(p){var sinphi,cosphi;var dlon;var coslon;var ksp;var g;var lon=p.x;var lat=p.y;dlon=Proj4js.common.adjust_lon(lon-this.long0);sinphi=Math.sin(lat);cosphi=Math.cos(lat);coslon=Math.cos(dlon);g=this.sin_p14*sinphi+this.cos_p14*cosphi*coslon;ksp=1.0;if((g>0)||(Math.abs(g)<=Proj4js.common.EPSLN)){x=this.x0+this.a*ksp*cosphi*Math.sin(dlon)/g;y=this.y0+this.a*ksp*(this.cos_p14*sinphi-this.sin_p14*cosphi*coslon)/g;}else{Proj4js.reportError("orthoFwdPointError");x=this.x0+this.infinity_dist*cosphi*Math.sin(dlon);y=this.y0+this.infinity_dist*(this.cos_p14*sinphi-this.sin_p14*cosphi*coslon);} |
| 190 | | p.x=x;p.y=y;return p;},inverse:function(p){var rh;var z;var sinc,cosc;var c;var lon,lat;p.x=(p.x-this.x0)/this.a;p.y=(p.y-this.y0)/this.a;p.x/=this.k0;p.y/=this.k0;if((rh=Math.sqrt(p.x*p.x+p.y*p.y))){c=Math.atan2(rh,this.rc);sinc=Math.sin(c);cosc=Math.cos(c);lat=Proj4js.common.asinz(cosc*this.sin_p14+(p.y*sinc*this.cos_p14)/rh);lon=Math.atan2(p.x*sinc,rh*this.cos_p14*cosc-p.y*this.sin_p14*sinc);lon=Proj4js.common.adjust_lon(this.long0+lon);}else{lat=this.phic0;lon=0.0;} |
| 191 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.sinu={init:function(){this.R=6370997.0;},forward:function(p){var x,y,delta_lon;var lon=p.x;var lat=p.y;delta_lon=Proj4js.common.adjust_lon(lon-this.long0);x=this.R*delta_lon*Math.cos(lat)+this.x0;y=this.R*lat+this.y0;p.x=x;p.y=y;return p;},inverse:function(p){var lat,temp,lon;p.x-=this.x0;p.y-=this.y0;lat=p.y/this.R;if(Math.abs(lat)>Proj4js.common.HALF_PI){Proj4js.reportError("sinu:Inv:DataError");} |
| 192 | | temp=Math.abs(lat)-Proj4js.common.HALF_PI;if(Math.abs(temp)>Proj4js.common.EPSLN){temp=this.long0+p.x/(this.R*Math.cos(lat));lon=Proj4js.common.adjust_lon(temp);}else{lon=this.long0;} |
| 193 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.vandg={init:function(){this.R=6370997.0;},forward:function(p){var lon=p.x;var lat=p.y;var dlon=Proj4js.common.adjust_lon(lon-this.long0);var x,y;if(Math.abs(lat)<=Proj4js.common.EPSLN){x=this.x0+this.R*dlon;y=this.y0;} |
| 194 | | var theta=Proj4js.common.asinz(2.0*Math.abs(lat/Proj4js.common.PI));if((Math.abs(dlon)<=Proj4js.common.EPSLN)||(Math.abs(Math.abs(lat)-Proj4js.common.HALF_PI)<=Proj4js.common.EPSLN)){x=this.x0;if(lat>=0){y=this.y0+Proj4js.common.PI*this.R*Math.tan(.5*theta);}else{y=this.y0+Proj4js.common.PI*this.R*-Math.tan(.5*theta);}} |
| 195 | | var al=.5*Math.abs((Proj4js.common.PI/dlon)-(dlon/Proj4js.common.PI));var asq=al*al;var sinth=Math.sin(theta);var costh=Math.cos(theta);var g=costh/(sinth+costh-1.0);var gsq=g*g;var m=g*(2.0/sinth-1.0);var msq=m*m;var con=Proj4js.common.PI*this.R*(al*(g-msq)+Math.sqrt(asq*(g-msq)*(g-msq)-(msq+asq)*(gsq-msq)))/(msq+asq);if(dlon<0){con=-con;} |
| 196 | | x=this.x0+con;con=Math.abs(con/(Proj4js.common.PI*this.R));if(lat>=0){y=this.y0+Proj4js.common.PI*this.R*Math.sqrt(1.0-con*con-2.0*al*con);}else{y=this.y0-Proj4js.common.PI*this.R*Math.sqrt(1.0-con*con-2.0*al*con);} |
| 197 | | p.x=x;p.y=y;return p;},inverse:function(p){var dlon;var xx,yy,xys,c1,c2,c3;var al,asq;var a1;var m1;var con;var th1;var d;p.x-=this.x0;p.y-=this.y0;con=Proj4js.common.PI*this.R;xx=p.x/con;yy=p.y/con;xys=xx*xx+yy*yy;c1=-Math.abs(yy)*(1.0+xys);c2=c1-2.0*yy*yy+xx*xx;c3=-2.0*c1+1.0+2.0*yy*yy+xys*xys;d=yy*yy/c3+(2.0*c2*c2*c2/c3/c3/c3-9.0*c1*c2/c3/c3)/27.0;a1=(c1-c2*c2/3.0/c3)/c3;m1=2.0*Math.sqrt(-a1/3.0);con=((3.0*d)/a1)/m1;if(Math.abs(con)>1.0){if(con>=0.0){con=1.0;}else{con=-1.0;}} |
| 198 | | th1=Math.acos(con)/3.0;if(p.y>=0){lat=(-m1*Math.cos(th1+Proj4js.common.PI/3.0)-c2/3.0/c3)*Proj4js.common.PI;}else{lat=-(-m1*Math.cos(th1+PI/3.0)-c2/3.0/c3)*Proj4js.common.PI;} |
| 199 | | if(Math.abs(xx)<Proj4js.common.EPSLN){lon=this.long0;} |
| 200 | | lon=Proj4js.common.adjust_lon(this.long0+Proj4js.common.PI*(xys-1.0+Math.sqrt(1.0+2.0*(xx*xx-yy*yy)+xys*xys))/2.0/xx);p.x=lon;p.y=lat;return p;}};Proj4js.Proj.cea={init:function(){},forward:function(p){var lon=p.x;var lat=p.y;dlon=Proj4js.common.adjust_lon(lon-this.long0);var x=this.x0+this.a*dlon*Math.cos(this.lat_ts);var y=this.y0+this.a*Math.sin(lat)/Math.cos(this.lat_ts);p.x=x;p.y=y;return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var lon=Proj4js.common.adjust_lon(this.long0+(p.x/this.a)/Math.cos(this.lat_ts));var lat=Math.asin((p.y/this.a)*Math.cos(this.lat_ts));p.x=lon;p.y=lat;return p;}};Proj4js.Proj.eqc={init:function(){if(!this.x0)this.x0=0;if(!this.y0)this.y0=0;if(!this.lat0)this.lat0=0;if(!this.long0)this.long0=0;if(!this.lat_ts)this.lat_ts=0;if(!this.title)this.title="Equidistant Cylindrical (Plate Carre)";this.rc=Math.cos(this.lat_ts);},forward:function(p){var lon=p.x;var lat=p.y;var dlon=Proj4js.common.adjust_lon(lon-this.long0);var dlat=Proj4js.common.adjust_lat(lat-this.lat0);p.x=this.x0+(this.a*dlon*this.rc);p.y=this.y0+(this.a*dlat);return p;},inverse:function(p){var x=p.x;var y=p.y;p.x=Proj4js.common.adjust_lon(this.long0+((x-this.x0)/(this.a*this.rc)));p.y=Proj4js.common.adjust_lat(this.lat0+((y-this.y0)/(this.a)));return p;}};Proj4js.Proj.cass={init:function(){if(!this.sphere){this.en=this.pj_enfn(this.es) |
| 201 | | this.m0=this.pj_mlfn(this.lat0,Math.sin(this.lat0),Math.cos(this.lat0),this.en);}},C1:.16666666666666666666,C2:.00833333333333333333,C3:.04166666666666666666,C4:.33333333333333333333,C5:.06666666666666666666,forward:function(p){var x,y;var lam=p.x;var phi=p.y;lam=Proj4js.common.adjust_lon(lam-this.long0);if(this.sphere){x=Math.asin(Math.cos(phi)*Math.sin(lam));y=Math.atan2(Math.tan(phi),Math.cos(lam))-this.phi0;}else{this.n=Math.sin(phi);this.c=Math.cos(phi);y=this.pj_mlfn(phi,this.n,this.c,this.en);this.n=1./Math.sqrt(1.-this.es*this.n*this.n);this.tn=Math.tan(phi);this.t=this.tn*this.tn;this.a1=lam*this.c;this.c*=this.es*this.c/(1-this.es);this.a2=this.a1*this.a1;x=this.n*this.a1*(1.-this.a2*this.t*(this.C1-(8.-this.t+8.*this.c)*this.a2*this.C2));y-=this.m0-this.n*this.tn*this.a2*(.5+(5.-this.t+6.*this.c)*this.a2*this.C3);} |
| 202 | | p.x=this.a*x+this.x0;p.y=this.a*y+this.y0;return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var x=p.x/this.a;var y=p.y/this.a;if(this.sphere){this.dd=y+this.lat0;phi=Math.asin(Math.sin(this.dd)*Math.cos(x));lam=Math.atan2(Math.tan(x),Math.cos(this.dd));}else{ph1=this.pj_inv_mlfn(this.m0+y,this.es,this.en);this.tn=Math.tan(ph1);this.t=this.tn*this.tn;this.n=Math.sin(ph1);this.r=1./(1.-this.es*this.n*this.n);this.n=Math.sqrt(this.r);this.r*=(1.-this.es)*this.n;this.dd=x/this.n;this.d2=this.dd*this.dd;phi=ph1-(this.n*this.tn/this.r)*this.d2*(.5-(1.+3.*this.t)*this.d2*this.C3);lam=this.dd*(1.+this.t*this.d2*(-this.C4+(1.+3.*this.t)*this.d2*this.C5))/Math.cos(ph1);} |
| 203 | | p.x=Proj4js.common.adjust_lon(this.long0+lam);p.y=phi;return p;},pj_enfn:function(es){en=new Array();en[0]=this.C00-es*(this.C02+es*(this.C04+es*(this.C06+es*this.C08)));en[1]=es*(this.C22-es*(this.C04+es*(this.C06+es*this.C08)));var t=es*es;en[2]=t*(this.C44-es*(this.C46+es*this.C48));t*=es;en[3]=t*(this.C66-es*this.C68);en[4]=t*es*this.C88;return en;},pj_mlfn:function(phi,sphi,cphi,en){cphi*=sphi;sphi*=sphi;return(en[0]*phi-cphi*(en[1]+sphi*(en[2]+sphi*(en[3]+sphi*en[4]))));},pj_inv_mlfn:function(arg,es,en){k=1./(1.-es);phi=arg;for(i=Proj4js.common.MAX_ITER;i;--i){s=Math.sin(phi);t=1.-es*s*s;t=(this.pj_mlfn(phi,s,Math.cos(phi),en)-arg)*(t*Math.sqrt(t))*k;phi-=t;if(Math.abs(t)<Proj4js.common.EPSLN) |
| 204 | | return phi;} |
| 205 | | Proj4js.reportError("cass:pj_inv_mlfn: Convergence error");return phi;},C00:1.0,C02:.25,C04:.046875,C06:.01953125,C08:.01068115234375,C22:.75,C44:.46875,C46:.01302083333333333333,C48:.00712076822916666666,C66:.36458333333333333333,C68:.00569661458333333333,C88:.3076171875} |
| 206 | | Proj4js.Proj.gauss={init:function(){sphi=Math.sin(this.lat0);cphi=Math.cos(this.lat0);cphi*=cphi;this.rc=Math.sqrt(1.0-this.es)/(1.0-this.es*sphi*sphi);this.C=Math.sqrt(1.0+this.es*cphi*cphi/(1.0-this.es));this.phic0=Math.asin(sphi/this.C);this.ratexp=0.5*this.C*this.e;this.K=Math.tan(0.5*this.phic0+Proj4js.common.FORTPI)/(Math.pow(Math.tan(0.5*this.lat0+Proj4js.common.FORTPI),this.C)*Proj4js.common.srat(this.e*sphi,this.ratexp));},forward:function(p){var lon=p.x;var lat=p.y;p.y=2.0*Math.atan(this.K*Math.pow(Math.tan(0.5*lat+Proj4js.common.FORTPI),this.C)*Proj4js.common.srat(this.e*Math.sin(lat),this.ratexp))-Proj4js.common.HALF_PI;p.x=this.C*lon;return p;},inverse:function(p){var DEL_TOL=1e-14;var lon=p.x/this.C;var lat=p.y;num=Math.pow(Math.tan(0.5*lat+Proj4js.common.FORTPI)/this.K,1./this.C);for(var i=Proj4js.common.MAX_ITER;i>0;--i){lat=2.0*Math.atan(num*Proj4js.common.srat(this.e*Math.sin(p.y),-0.5*this.e))-Proj4js.common.HALF_PI;if(Math.abs(lat-p.y)<DEL_TOL)break;p.y=lat;} |
| 207 | | if(!i){Proj4js.reportError("gauss:inverse:convergence failed");return null;} |
| 208 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.omerc={init:function(){if(!this.mode)this.mode=0;if(!this.lon1){this.lon1=0;this.mode=1;} |
| 209 | | if(!this.lon2)this.lon2=0;if(!this.lat2)this.lat2=0;var temp=this.b/this.a;var es=1.0-Math.pow(temp,2);var e=Math.sqrt(es);this.sin_p20=Math.sin(this.lat0);this.cos_p20=Math.cos(this.lat0);this.con=1.0-this.es*this.sin_p20*this.sin_p20;this.com=Math.sqrt(1.0-es);this.bl=Math.sqrt(1.0+this.es*Math.pow(this.cos_p20,4.0)/(1.0-es));this.al=this.a*this.bl*this.k0*this.com/this.con;if(Math.abs(this.lat0)<Proj4js.common.EPSLN){this.ts=1.0;this.d=1.0;this.el=1.0;}else{this.ts=Proj4js.common.tsfnz(this.e,this.lat0,this.sin_p20);this.con=Math.sqrt(this.con);this.d=this.bl*this.com/(this.cos_p20*this.con);if((this.d*this.d-1.0)>0.0){if(this.lat0>=0.0){this.f=this.d+Math.sqrt(this.d*this.d-1.0);}else{this.f=this.d-Math.sqrt(this.d*this.d-1.0);}}else{this.f=this.d;} |
| 210 | | this.el=this.f*Math.pow(this.ts,this.bl);} |
| 211 | | if(this.mode!=0){this.g=.5*(this.f-1.0/this.f);this.gama=Proj4js.common.asinz(Math.sin(this.alpha)/this.d);this.longc=this.longc-Proj4js.common.asinz(this.g*Math.tan(this.gama))/this.bl;this.con=Math.abs(this.lat0);if((this.con>Proj4js.common.EPSLN)&&(Math.abs(this.con-Proj4js.common.HALF_PI)>Proj4js.common.EPSLN)){this.singam=Math.sin(this.gama);this.cosgam=Math.cos(this.gama);this.sinaz=Math.sin(this.alpha);this.cosaz=Math.cos(this.alpha);if(this.lat0>=0){this.u=(this.al/this.bl)*Math.atan(Math.sqrt(this.d*this.d-1.0)/this.cosaz);}else{this.u=-(this.al/this.bl)*Math.atan(Math.sqrt(this.d*this.d-1.0)/this.cosaz);}}else{Proj4js.reportError("omerc:Init:DataError");}}else{this.sinphi=Math.sin(this.at1);this.ts1=Proj4js.common.tsfnz(this.e,this.lat1,this.sinphi);this.sinphi=Math.sin(this.lat2);this.ts2=Proj4js.common.tsfnz(this.e,this.lat2,this.sinphi);this.h=Math.pow(this.ts1,this.bl);this.l=Math.pow(this.ts2,this.bl);this.f=this.el/this.h;this.g=.5*(this.f-1.0/this.f);this.j=(this.el*this.el-this.l*this.h)/(this.el*this.el+this.l*this.h);this.p=(this.l-this.h)/(this.l+this.h);this.dlon=this.lon1-this.lon2;if(this.dlon<-Proj4js.common.PI)this.lon2=this.lon2-2.0*Proj4js.common.PI;if(this.dlon>Proj4js.common.PI)this.lon2=this.lon2+2.0*Proj4js.common.PI;this.dlon=this.lon1-this.lon2;this.longc=.5*(this.lon1+this.lon2)-Math.atan(this.j*Math.tan(.5*this.bl*this.dlon)/this.p)/this.bl;this.dlon=Proj4js.common.adjust_lon(this.lon1-this.longc);this.gama=Math.atan(Math.sin(this.bl*this.dlon)/this.g);this.alpha=Proj4js.common.asinz(this.d*Math.sin(this.gama));if(Math.abs(this.lat1-this.lat2)<=Proj4js.common.EPSLN){Proj4js.reportError("omercInitDataError");}else{this.con=Math.abs(this.lat1);} |
| 212 | | if((this.con<=Proj4js.common.EPSLN)||(Math.abs(this.con-HALF_PI)<=Proj4js.common.EPSLN)){Proj4js.reportError("omercInitDataError");}else{if(Math.abs(Math.abs(this.lat0)-Proj4js.common.HALF_PI)<=Proj4js.common.EPSLN){Proj4js.reportError("omercInitDataError");}} |
| 213 | | this.singam=Math.sin(this.gam);this.cosgam=Math.cos(this.gam);this.sinaz=Math.sin(this.alpha);this.cosaz=Math.cos(this.alpha);if(this.lat0>=0){this.u=(this.al/this.bl)*Math.atan(Math.sqrt(this.d*this.d-1.0)/this.cosaz);}else{this.u=-(this.al/this.bl)*Math.atan(Math.sqrt(this.d*this.d-1.0)/this.cosaz);}}},forward:function(p){var theta;var sin_phi,cos_phi;var b;var c,t,tq;var con,n,ml;var q,us,vl;var ul,vs;var s;var dlon;var ts1;var lon=p.x;var lat=p.y;sin_phi=Math.sin(lat);dlon=Proj4js.common.adjust_lon(lon-this.longc);vl=Math.sin(this.bl*dlon);if(Math.abs(Math.abs(lat)-Proj4js.common.HALF_PI)>Proj4js.common.EPSLN){ts1=Proj4js.common.tsfnz(this.e,lat,sin_phi);q=this.el/(Math.pow(ts1,this.bl));s=.5*(q-1.0/q);t=.5*(q+1.0/q);ul=(s*this.singam-vl*this.cosgam)/t;con=Math.cos(this.bl*dlon);if(Math.abs(con)<.0000001){us=this.al*this.bl*dlon;}else{us=this.al*Math.atan((s*this.cosgam+vl*this.singam)/con)/this.bl;if(con<0)us=us+Proj4js.common.PI*this.al/this.bl;}}else{if(lat>=0){ul=this.singam;}else{ul=-this.singam;} |
| 214 | | us=this.al*lat/this.bl;} |
| 215 | | if(Math.abs(Math.abs(ul)-1.0)<=Proj4js.common.EPSLN){Proj4js.reportError("omercFwdInfinity");} |
| 216 | | vs=.5*this.al*Math.log((1.0-ul)/(1.0+ul))/this.bl;us=us-this.u;var x=this.x0+vs*this.cosaz+us*this.sinaz;var y=this.y0+us*this.cosaz-vs*this.sinaz;p.x=x;p.y=y;return p;},inverse:function(p){var delta_lon;var theta;var delta_theta;var sin_phi,cos_phi;var b;var c,t,tq;var con,n,ml;var vs,us,q,s,ts1;var vl,ul,bs;var dlon;var flag;p.x-=this.x0;p.y-=this.y0;flag=0;vs=p.x*this.cosaz-p.y*this.sinaz;us=p.y*this.cosaz+p.x*this.sinaz;us=us+this.u;q=Math.exp(-this.bl*vs/this.al);s=.5*(q-1.0/q);t=.5*(q+1.0/q);vl=Math.sin(this.bl*us/this.al);ul=(vl*this.cosgam+s*this.singam)/t;if(Math.abs(Math.abs(ul)-1.0)<=Proj4js.common.EPSLN) |
| 217 | | {lon=this.longc;if(ul>=0.0){lat=Proj4js.common.HALF_PI;}else{lat=-Proj4js.common.HALF_PI;}}else{con=1.0/this.bl;ts1=Math.pow((this.el/Math.sqrt((1.0+ul)/(1.0-ul))),con);lat=Proj4js.common.phi2z(this.e,ts1);theta=this.longc-Math.atan2((s*this.cosgam-vl*this.singam),con)/this.bl;lon=Proj4js.common.adjust_lon(theta);} |
| 218 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.lcc={init:function(){if(!this.lat2){this.lat2=this.lat0;} |
| 219 | | if(!this.k0)this.k0=1.0;if(Math.abs(this.lat1+this.lat2)<Proj4js.common.EPSLN){Proj4js.reportError("lcc:init: Equal Latitudes");return;} |
| 220 | | var temp=this.b/this.a;this.e=Math.sqrt(1.0-temp*temp);var sin1=Math.sin(this.lat1);var cos1=Math.cos(this.lat1);var ms1=Proj4js.common.msfnz(this.e,sin1,cos1);var ts1=Proj4js.common.tsfnz(this.e,this.lat1,sin1);var sin2=Math.sin(this.lat2);var cos2=Math.cos(this.lat2);var ms2=Proj4js.common.msfnz(this.e,sin2,cos2);var ts2=Proj4js.common.tsfnz(this.e,this.lat2,sin2);var ts0=Proj4js.common.tsfnz(this.e,this.lat0,Math.sin(this.lat0));if(Math.abs(this.lat1-this.lat2)>Proj4js.common.EPSLN){this.ns=Math.log(ms1/ms2)/Math.log(ts1/ts2);}else{this.ns=sin1;} |
| 221 | | this.f0=ms1/(this.ns*Math.pow(ts1,this.ns));this.rh=this.a*this.f0*Math.pow(ts0,this.ns);if(!this.title)this.title="Lambert Conformal Conic";},forward:function(p){var lon=p.x;var lat=p.y;if(lat<=90.0&&lat>=-90.0&&lon<=180.0&&lon>=-180.0){}else{Proj4js.reportError("lcc:forward: llInputOutOfRange: "+lon+" : "+lat);return null;} |
| 222 | | var con=Math.abs(Math.abs(lat)-Proj4js.common.HALF_PI);var ts,rh1;if(con>Proj4js.common.EPSLN){ts=Proj4js.common.tsfnz(this.e,lat,Math.sin(lat));rh1=this.a*this.f0*Math.pow(ts,this.ns);}else{con=lat*this.ns;if(con<=0){Proj4js.reportError("lcc:forward: No Projection");return null;} |
| 223 | | rh1=0;} |
| 224 | | var theta=this.ns*Proj4js.common.adjust_lon(lon-this.long0);p.x=this.k0*(rh1*Math.sin(theta))+this.x0;p.y=this.k0*(this.rh-rh1*Math.cos(theta))+this.y0;return p;},inverse:function(p){var rh1,con,ts;var lat,lon;x=(p.x-this.x0)/this.k0;y=(this.rh-(p.y-this.y0)/this.k0);if(this.ns>0){rh1=Math.sqrt(x*x+y*y);con=1.0;}else{rh1=-Math.sqrt(x*x+y*y);con=-1.0;} |
| 225 | | var theta=0.0;if(rh1!=0){theta=Math.atan2((con*x),(con*y));} |
| 226 | | if((rh1!=0)||(this.ns>0.0)){con=1.0/this.ns;ts=Math.pow((rh1/(this.a*this.f0)),con);lat=Proj4js.common.phi2z(this.e,ts);if(lat==-9999)return null;}else{lat=-Proj4js.common.HALF_PI;} |
| 227 | | lon=Proj4js.common.adjust_lon(theta/this.ns+this.long0);p.x=lon;p.y=lat;return p;}};Proj4js.Proj.laea={S_POLE:1,N_POLE:2,EQUIT:3,OBLIQ:4,init:function(){var t=Math.abs(this.lat0);if(Math.abs(t-Proj4js.common.HALF_PI)<Proj4js.common.EPSLN){this.mode=this.lat0<0.?this.S_POLE:this.N_POLE;}else if(Math.abs(t)<Proj4js.common.EPSLN){this.mode=this.EQUIT;}else{this.mode=this.OBLIQ;} |
| 228 | | if(this.es>0){var sinphi;this.qp=Proj4js.common.qsfnz(this.e,1.0);this.mmf=.5/(1.-this.es);this.apa=this.authset(this.es);switch(this.mode){case this.N_POLE:case this.S_POLE:this.dd=1.;break;case this.EQUIT:this.rq=Math.sqrt(.5*this.qp);this.dd=1./this.rq;this.xmf=1.;this.ymf=.5*this.qp;break;case this.OBLIQ:this.rq=Math.sqrt(.5*this.qp);sinphi=Math.sin(this.lat0);this.sinb1=Proj4js.common.qsfnz(this.e,sinphi)/this.qp;this.cosb1=Math.sqrt(1.-this.sinb1*this.sinb1);this.dd=Math.cos(this.lat0)/(Math.sqrt(1.-this.es*sinphi*sinphi)*this.rq*this.cosb1);this.ymf=(this.xmf=this.rq)/this.dd;this.xmf*=this.dd;break;}}else{if(this.mode==this.OBLIQ){this.sinph0=Math.sin(this.lat0);this.cosph0=Math.cos(this.lat0);}}},forward:function(p){var x,y;var lam=p.x;var phi=p.y;lam=Proj4js.common.adjust_lon(lam-this.long0);if(this.sphere){var coslam,cosphi,sinphi;sinphi=Math.sin(phi);cosphi=Math.cos(phi);coslam=Math.cos(lam);switch(this.mode){case this.EQUIT:y=(this.mode==this.EQUIT)?1.+cosphi*coslam:1.+this.sinph0*sinphi+this.cosph0*cosphi*coslam;if(y<=Proj4js.common.EPSLN){Proj4js.reportError("laea:fwd:y less than eps");return null;} |
| 229 | | y=Math.sqrt(2./y);x=y*cosphi*Math.sin(lam);y*=(this.mode==this.EQUIT)?sinphi:this.cosph0*sinphi-this.sinph0*cosphi*coslam;break;case this.N_POLE:coslam=-coslam;case this.S_POLE:if(Math.abs(phi+this.phi0)<Proj4js.common.EPSLN){Proj4js.reportError("laea:fwd:phi < eps");return null;} |
| 230 | | y=Proj4js.common.FORTPI-phi*.5;y=2.*((this.mode==this.S_POLE)?Math.cos(y):Math.sin(y));x=y*Math.sin(lam);y*=coslam;break;}}else{var coslam,sinlam,sinphi,q,sinb=0.0,cosb=0.0,b=0.0;coslam=Math.cos(lam);sinlam=Math.sin(lam);sinphi=Math.sin(phi);q=Proj4js.common.qsfnz(this.e,sinphi);if(this.mode==this.OBLIQ||this.mode==this.EQUIT){sinb=q/this.qp;cosb=Math.sqrt(1.-sinb*sinb);} |
| 231 | | switch(this.mode){case this.OBLIQ:b=1.+this.sinb1*sinb+this.cosb1*cosb*coslam;break;case this.EQUIT:b=1.+cosb*coslam;break;case this.N_POLE:b=Proj4js.common.HALF_PI+phi;q=this.qp-q;break;case this.S_POLE:b=phi-Proj4js.common.HALF_PI;q=this.qp+q;break;} |
| 232 | | if(Math.abs(b)<Proj4js.common.EPSLN){Proj4js.reportError("laea:fwd:b < eps");return null;} |
| 233 | | switch(this.mode){case this.OBLIQ:case this.EQUIT:b=Math.sqrt(2./b);if(this.mode==this.OBLIQ){y=this.ymf*b*(this.cosb1*sinb-this.sinb1*cosb*coslam);}else{y=(b=Math.sqrt(2./(1.+cosb*coslam)))*sinb*this.ymf;} |
| 234 | | x=this.xmf*b*cosb*sinlam;break;case this.N_POLE:case this.S_POLE:if(q>=0.){x=(b=Math.sqrt(q))*sinlam;y=coslam*((this.mode==this.S_POLE)?b:-b);}else{x=y=0.;} |
| 235 | | break;}} |
| 236 | | p.x=this.a*x+this.x0;p.y=this.a*y+this.y0;return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var x=p.x/this.a;var y=p.y/this.a;if(this.sphere){var cosz=0.0,rh,sinz=0.0;rh=Math.sqrt(x*x+y*y);var phi=rh*.5;if(phi>1.){Proj4js.reportError("laea:Inv:DataError");return null;} |
| 237 | | phi=2.*Math.asin(phi);if(this.mode==this.OBLIQ||this.mode==this.EQUIT){sinz=Math.sin(phi);cosz=Math.cos(phi);} |
| 238 | | switch(this.mode){case this.EQUIT:phi=(Math.abs(rh)<=Proj4js.common.EPSLN)?0.:Math.asin(y*sinz/rh);x*=sinz;y=cosz*rh;break;case this.OBLIQ:phi=(Math.abs(rh)<=Proj4js.common.EPSLN)?this.phi0:Math.asin(cosz*sinph0+y*sinz*cosph0/rh);x*=sinz*cosph0;y=(cosz-Math.sin(phi)*sinph0)*rh;break;case this.N_POLE:y=-y;phi=Proj4js.common.HALF_PI-phi;break;case this.S_POLE:phi-=Proj4js.common.HALF_PI;break;} |
| 239 | | lam=(y==0.&&(this.mode==this.EQUIT||this.mode==this.OBLIQ))?0.:Math.atan2(x,y);}else{var cCe,sCe,q,rho,ab=0.0;switch(this.mode){case this.EQUIT:case this.OBLIQ:x/=this.dd;y*=this.dd;rho=Math.sqrt(x*x+y*y);if(rho<Proj4js.common.EPSLN){p.x=0.;p.y=this.phi0;return p;} |
| 240 | | sCe=2.*Math.asin(.5*rho/this.rq);cCe=Math.cos(sCe);x*=(sCe=Math.sin(sCe));if(this.mode==this.OBLIQ){ab=cCe*this.sinb1+y*sCe*this.cosb1/rho |
| 241 | | q=this.qp*ab;y=rho*this.cosb1*cCe-y*this.sinb1*sCe;}else{ab=y*sCe/rho;q=this.qp*ab;y=rho*cCe;} |
| 242 | | break;case this.N_POLE:y=-y;case this.S_POLE:q=(x*x+y*y);if(!q){p.x=0.;p.y=this.phi0;return p;} |
| 243 | | ab=1.-q/this.qp;if(this.mode==this.S_POLE){ab=-ab;} |
| 244 | | break;} |
| 245 | | lam=Math.atan2(x,y);phi=this.authlat(Math.asin(ab),this.apa);} |
| 246 | | p.x=Proj4js.common.adjust_lon(this.long0+lam);p.y=phi;return p;},P00:.33333333333333333333,P01:.17222222222222222222,P02:.10257936507936507936,P10:.06388888888888888888,P11:.06640211640211640211,P20:.01641501294219154443,authset:function(es){var t;var APA=new Array();APA[0]=es*this.P00;t=es*es;APA[0]+=t*this.P01;APA[1]=t*this.P10;t*=es;APA[0]+=t*this.P02;APA[1]+=t*this.P11;APA[2]=t*this.P20;return APA;},authlat:function(beta,APA){var t=beta+beta;return(beta+APA[0]*Math.sin(t)+APA[1]*Math.sin(t+t)+APA[2]*Math.sin(t+t+t));}};Proj4js.Proj.aeqd={init:function(){this.sin_p12=Math.sin(this.lat0);this.cos_p12=Math.cos(this.lat0);},forward:function(p){var lon=p.x;var lat=p.y;var ksp;var sinphi=Math.sin(p.y);var cosphi=Math.cos(p.y);var dlon=Proj4js.common.adjust_lon(lon-this.long0);var coslon=Math.cos(dlon);var g=this.sin_p12*sinphi+this.cos_p12*cosphi*coslon;if(Math.abs(Math.abs(g)-1.0)<Proj4js.common.EPSLN){ksp=1.0;if(g<0.0){Proj4js.reportError("aeqd:Fwd:PointError");return;}}else{var z=Math.acos(g);ksp=z/Math.sin(z);} |
| 247 | | p.x=this.x0+this.a*ksp*cosphi*Math.sin(dlon);p.y=this.y0+this.a*ksp*(this.cos_p12*sinphi-this.sin_p12*cosphi*coslon);return p;},inverse:function(p){p.x-=this.x0;p.y-=this.y0;var rh=Math.sqrt(p.x*p.x+p.y*p.y);if(rh>(2.0*Proj4js.common.HALF_PI*this.a)){Proj4js.reportError("aeqdInvDataError");return;} |
| 248 | | var z=rh/this.a;var sinz=Math.sin(z);var cosz=Math.cos(z);var lon=this.long0;var lat;if(Math.abs(rh)<=Proj4js.common.EPSLN){lat=this.lat0;}else{lat=Proj4js.common.asinz(cosz*this.sin_p12+(p.y*sinz*this.cos_p12)/rh);var con=Math.abs(this.lat0)-Proj4js.common.HALF_PI;if(Math.abs(con)<=Proj4js.common.EPSLN){if(lat0>=0.0){lon=Proj4js.common.adjust_lon(this.long0+Math.atan2(p.x,-p.y));}else{lon=Proj4js.common.adjust_lon(this.long0-Math.atan2(-p.x,p.y));}}else{con=cosz-this.sin_p12*Math.sin(lat);if((Math.abs(con)<Proj4js.common.EPSLN)&&(Math.abs(p.x)<Proj4js.common.EPSLN)){}else{var temp=Math.atan2((p.x*sinz*this.cos_p12),(con*rh));lon=Proj4js.common.adjust_lon(this.long0+Math.atan2((p.x*sinz*this.cos_p12),(con*rh)));}}} |
| 249 | | p.x=lon;p.y=lat;return p;}};Proj4js.Proj.moll={init:function(){},forward:function(p){var lon=p.x;var lat=p.y;var delta_lon=Proj4js.common.adjust_lon(lon-this.long0);var theta=lat;var con=Proj4js.common.PI*Math.sin(lat);for(var i=0;true;i++){var delta_theta=-(theta+Math.sin(theta)-con)/(1.0+Math.cos(theta));theta+=delta_theta;if(Math.abs(delta_theta)<Proj4js.common.EPSLN)break;if(i>=50){Proj4js.reportError("moll:Fwd:IterationError");}} |
| 250 | | theta/=2.0;if(Proj4js.common.PI/2-Math.abs(lat)<Proj4js.common.EPSLN)delta_lon=0;var x=0.900316316158*this.a*delta_lon*Math.cos(theta)+this.x0;var y=1.4142135623731*this.a*Math.sin(theta)+this.y0;p.x=x;p.y=y;return p;},inverse:function(p){var theta;var arg;p.x-=this.x0;var arg=p.y/(1.4142135623731*this.a);if(Math.abs(arg)>0.999999999999)arg=0.999999999999;var theta=Math.asin(arg);var lon=Proj4js.common.adjust_lon(this.long0+(p.x/(0.900316316158*this.a*Math.cos(theta))));if(lon<(-Proj4js.common.PI))lon=-Proj4js.common.PI;if(lon>Proj4js.common.PI)lon=Proj4js.common.PI;arg=(2.0*theta+Math.sin(2.0*theta))/Proj4js.common.PI;if(Math.abs(arg)>1.0)arg=1.0;var lat=Math.asin(arg);p.x=lon;p.y=lat;return p;}}; |
| | 2869 | * Property: featureName |
| | 2870 | * {String} Element name for features. Default is "sql_statement". |
| | 2871 | */ |
| | 2872 | featureName: "sql_statement", |
| | 2873 | /** |
| | 2874 | * Property: geometryName |
| | 2875 | * {String} Name of geometry element. Defaults to "geometryProperty". |
| | 2876 | */ |
| | 2877 | geometryName: "geometryProperty", |
| | 2878 | /** |
| | 2879 | * Property: xy |
| | 2880 | * {Boolean} Order of the GML coordinate true:(x,y) or false:(y,x) |
| | 2881 | * Changing is not recommended, a new Format should be instantiated. |
| | 2882 | */ |
| | 2883 | xy: true, |
| | 2884 | /** |
| | 2885 | * Constructor: ZOO.Format.GML |
| | 2886 | * Create a new parser for GML. |
| | 2887 | * |
| | 2888 | * Parameters: |
| | 2889 | * options - {Object} An optional object whose properties will be set on |
| | 2890 | * this instance. |
| | 2891 | */ |
| | 2892 | initialize: function(options) { |
| | 2893 | // compile regular expressions once instead of every time they are used |
| | 2894 | this.regExes = { |
| | 2895 | trimSpace: (/^\s*|\s*$/g), |
| | 2896 | removeSpace: (/\s*/g), |
| | 2897 | splitSpace: (/\s+/), |
| | 2898 | trimComma: (/\s*,\s*/g) |
| | 2899 | }; |
| | 2900 | ZOO.Format.prototype.initialize.apply(this, [options]); |
| | 2901 | }, |
| | 2902 | /** |
| | 2903 | * Method: read |
| | 2904 | * Read data from a string, and return a list of features. |
| | 2905 | * |
| | 2906 | * Parameters: |
| | 2907 | * data - {String} data to read/parse. |
| | 2908 | * |
| | 2909 | * Returns: |
| | 2910 | * {Array(<ZOO.Feature>)} An array of features. |
| | 2911 | */ |
| | 2912 | read: function(data) { |
| | 2913 | this.features = []; |
| | 2914 | data = data.replace(/^<\?xml\s+version\s*=\s*(["'])[^\1]+\1[^?]*\?>/, ""); |
| | 2915 | data = new XML(data); |
| | 2916 | |
| | 2917 | var gmlns = Namespace(this.namespaces['gml']); |
| | 2918 | var featureNodes = data..gmlns::featureMember; |
| | 2919 | var features = []; |
| | 2920 | for(var i=0,len=featureNodes.length(); i<len; i++) { |
| | 2921 | var feature = this.parseFeature(featureNodes[i]); |
| | 2922 | if(feature) { |
| | 2923 | features.push(feature); |
| | 2924 | } |
| | 2925 | } |
| | 2926 | return features; |
| | 2927 | }, |
| | 2928 | /** |
| | 2929 | * Method: parseFeature |
| | 2930 | * This function is the core of the GML parsing code in ZOO. |
| | 2931 | * It creates the geometries that are then attached to the returned |
| | 2932 | * feature, and calls parseAttributes() to get attribute data out. |
| | 2933 | * |
| | 2934 | * Parameters: |
| | 2935 | * node - {E4XElement} A GML feature node. |
| | 2936 | */ |
| | 2937 | parseFeature: function(node) { |
| | 2938 | // only accept one geometry per feature - look for highest "order" |
| | 2939 | var gmlns = Namespace(this.namespaces['gml']); |
| | 2940 | var order = ["MultiPolygon", "Polygon", |
| | 2941 | "MultiLineString", "LineString", |
| | 2942 | "MultiPoint", "Point", "Envelope", "Box"]; |
| | 2943 | var type, nodeList, geometry, parser; |
| | 2944 | for(var i=0; i<order.length; ++i) { |
| | 2945 | type = order[i]; |
| | 2946 | nodeList = node.descendants(QName(gmlns,type)); |
| | 2947 | if (nodeList.length() > 0) { |
| | 2948 | var parser = this.parseGeometry[type.toLowerCase()]; |
| | 2949 | if(parser) { |
| | 2950 | geometry = parser.apply(this, [nodeList[0]]); |
| | 2951 | if (this.internalProjection && this.externalProjection) { |
| | 2952 | geometry.transform(this.externalProjection, |
| | 2953 | this.internalProjection); |
| | 2954 | } |
| | 2955 | } |
| | 2956 | // stop looking for different geometry types |
| | 2957 | break; |
| | 2958 | } |
| | 2959 | } |
| | 2960 | var attributes; |
| | 2961 | if(this.extractAttributes) { |
| | 2962 | attributes = this.parseAttributes(node); |
| | 2963 | } |
| | 2964 | var feature = new ZOO.Feature(geometry, attributes); |
| | 2965 | return feature; |
| | 2966 | }, |
| | 2967 | /** |
| | 2968 | * Property: parseGeometry |
| | 2969 | * Properties of this object are the functions that parse geometries based |
| | 2970 | * on their type. |
| | 2971 | */ |
| | 2972 | parseGeometry: { |
| | 2973 | /** |
| | 2974 | * Method: parseGeometry.point |
| | 2975 | * Given a GML node representing a point geometry, create a ZOO |
| | 2976 | * point geometry. |
| | 2977 | * |
| | 2978 | * Parameters: |
| | 2979 | * node - {E4XElement} A GML node. |
| | 2980 | * |
| | 2981 | * Returns: |
| | 2982 | * {<ZOO.Geometry.Point>} A point geometry. |
| | 2983 | */ |
| | 2984 | 'point': function(node) { |
| | 2985 | /** |
| | 2986 | * Three coordinate variations to consider: |
| | 2987 | * 1) <gml:pos>x y z</gml:pos> |
| | 2988 | * 2) <gml:coordinates>x, y, z</gml:coordinates> |
| | 2989 | * 3) <gml:coord><gml:X>x</gml:X><gml:Y>y</gml:Y></gml:coord> |
| | 2990 | */ |
| | 2991 | var nodeList, coordString; |
| | 2992 | var coords = []; |
| | 2993 | // look for <gml:pos> |
| | 2994 | var nodeList = node..*::pos; |
| | 2995 | if(nodeList.length() > 0) { |
| | 2996 | coordString = nodeList[0].toString(); |
| | 2997 | coordString = coordString.replace(this.regExes.trimSpace, ""); |
| | 2998 | coords = coordString.split(this.regExes.splitSpace); |
| | 2999 | } |
| | 3000 | // look for <gml:coordinates> |
| | 3001 | if(coords.length == 0) { |
| | 3002 | nodeList = node..*::coordinates; |
| | 3003 | if(nodeList.length() > 0) { |
| | 3004 | coordString = nodeList[0].toString(); |
| | 3005 | coordString = coordString.replace(this.regExes.removeSpace,""); |
| | 3006 | coords = coordString.split(","); |
| | 3007 | } |
| | 3008 | } |
| | 3009 | // look for <gml:coord> |
| | 3010 | if(coords.length == 0) { |
| | 3011 | nodeList = node..*::coord; |
| | 3012 | if(nodeList.length() > 0) { |
| | 3013 | var xList = nodeList[0].*::X; |
| | 3014 | var yList = nodeList[0].*::Y; |
| | 3015 | if(xList.length() > 0 && yList.length() > 0) |
| | 3016 | coords = [xList[0].toString(), |
| | 3017 | yList[0].toString()]; |
| | 3018 | } |
| | 3019 | } |
| | 3020 | // preserve third dimension |
| | 3021 | if(coords.length == 2) |
| | 3022 | coords[2] = null; |
| | 3023 | if (this.xy) |
| | 3024 | return new ZOO.Geometry.Point(coords[0],coords[1],coords[2]); |
| | 3025 | else |
| | 3026 | return new ZOO.Geometry.Point(coords[1],coords[0],coords[2]); |
| | 3027 | }, |
| | 3028 | /** |
| | 3029 | * Method: parseGeometry.multipoint |
| | 3030 | * Given a GML node representing a multipoint geometry, create a |
| | 3031 | * ZOO multipoint geometry. |
| | 3032 | * |
| | 3033 | * Parameters: |
| | 3034 | * node - {E4XElement} A GML node. |
| | 3035 | * |
| | 3036 | * Returns: |
| | 3037 | * {<ZOO.Geometry.MultiPoint>} A multipoint geometry. |
| | 3038 | */ |
| | 3039 | 'multipoint': function(node) { |
| | 3040 | var nodeList = node..*::Point; |
| | 3041 | var components = []; |
| | 3042 | if(nodeList.length() > 0) { |
| | 3043 | var point; |
| | 3044 | for(var i=0, len=nodeList.length(); i<len; ++i) { |
| | 3045 | point = this.parseGeometry.point.apply(this, [nodeList[i]]); |
| | 3046 | if(point) |
| | 3047 | components.push(point); |
| | 3048 | } |
| | 3049 | } |
| | 3050 | return new ZOO.Geometry.MultiPoint(components); |
| | 3051 | }, |
| | 3052 | /** |
| | 3053 | * Method: parseGeometry.linestring |
| | 3054 | * Given a GML node representing a linestring geometry, create a |
| | 3055 | * ZOO linestring geometry. |
| | 3056 | * |
| | 3057 | * Parameters: |
| | 3058 | * node - {E4XElement} A GML node. |
| | 3059 | * |
| | 3060 | * Returns: |
| | 3061 | * {<ZOO.Geometry.LineString>} A linestring geometry. |
| | 3062 | */ |
| | 3063 | 'linestring': function(node, ring) { |
| | 3064 | /** |
| | 3065 | * Two coordinate variations to consider: |
| | 3066 | * 1) <gml:posList dimension="d">x0 y0 z0 x1 y1 z1</gml:posList> |
| | 3067 | * 2) <gml:coordinates>x0, y0, z0 x1, y1, z1</gml:coordinates> |
| | 3068 | */ |
| | 3069 | var nodeList, coordString; |
| | 3070 | var coords = []; |
| | 3071 | var points = []; |
| | 3072 | // look for <gml:posList> |
| | 3073 | nodeList = node..*::posList; |
| | 3074 | if(nodeList.length() > 0) { |
| | 3075 | coordString = nodeList[0].toString(); |
| | 3076 | coordString = coordString.replace(this.regExes.trimSpace, ""); |
| | 3077 | coords = coordString.split(this.regExes.splitSpace); |
| | 3078 | var dim = parseInt(nodeList[0].@dimension); |
| | 3079 | var j, x, y, z; |
| | 3080 | for(var i=0; i<coords.length/dim; ++i) { |
| | 3081 | j = i * dim; |
| | 3082 | x = coords[j]; |
| | 3083 | y = coords[j+1]; |
| | 3084 | z = (dim == 2) ? null : coords[j+2]; |
| | 3085 | if (this.xy) |
| | 3086 | points.push(new ZOO.Geometry.Point(x, y, z)); |
| | 3087 | else |
| | 3088 | points.push(new Z0O.Geometry.Point(y, x, z)); |
| | 3089 | } |
| | 3090 | } |
| | 3091 | // look for <gml:coordinates> |
| | 3092 | if(coords.length == 0) { |
| | 3093 | nodeList = node..*::coordinates; |
| | 3094 | if(nodeList.length() > 0) { |
| | 3095 | coordString = nodeList[0].toString(); |
| | 3096 | coordString = coordString.replace(this.regExes.trimSpace,""); |
| | 3097 | coordString = coordString.replace(this.regExes.trimComma,","); |
| | 3098 | var pointList = coordString.split(this.regExes.splitSpace); |
| | 3099 | for(var i=0; i<pointList.length; ++i) { |
| | 3100 | coords = pointList[i].split(","); |
| | 3101 | if(coords.length == 2) |
| | 3102 | coords[2] = null; |
| | 3103 | if (this.xy) |
| | 3104 | points.push(new ZOO.Geometry.Point(coords[0],coords[1],coords[2])); |
| | 3105 | else |
| | 3106 | points.push(new ZOO.Geometry.Point(coords[1],coords[0],coords[2])); |
| | 3107 | } |
| | 3108 | } |
| | 3109 | } |
| | 3110 | var line = null; |
| | 3111 | if(points.length != 0) { |
| | 3112 | if(ring) |
| | 3113 | line = new ZOO.Geometry.LinearRing(points); |
| | 3114 | else |
| | 3115 | line = new ZOO.Geometry.LineString(points); |
| | 3116 | } |
| | 3117 | return line; |
| | 3118 | }, |
| | 3119 | /** |
| | 3120 | * Method: parseGeometry.multilinestring |
| | 3121 | * Given a GML node representing a multilinestring geometry, create a |
| | 3122 | * ZOO multilinestring geometry. |
| | 3123 | * |
| | 3124 | * Parameters: |
| | 3125 | * node - {E4XElement} A GML node. |
| | 3126 | * |
| | 3127 | * Returns: |
| | 3128 | * {<ZOO.Geometry.MultiLineString>} A multilinestring geometry. |
| | 3129 | */ |
| | 3130 | 'multilinestring': function(node) { |
| | 3131 | var nodeList = node..*::LineString; |
| | 3132 | var components = []; |
| | 3133 | if(nodeList.length() > 0) { |
| | 3134 | var line; |
| | 3135 | for(var i=0, len=nodeList.length(); i<len; ++i) { |
| | 3136 | line = this.parseGeometry.linestring.apply(this, [nodeList[i]]); |
| | 3137 | if(point) |
| | 3138 | components.push(point); |
| | 3139 | } |
| | 3140 | } |
| | 3141 | return new ZOO.Geometry.MultiLineString(components); |
| | 3142 | }, |
| | 3143 | /** |
| | 3144 | * Method: parseGeometry.polygon |
| | 3145 | * Given a GML node representing a polygon geometry, create a |
| | 3146 | * ZOO polygon geometry. |
| | 3147 | * |
| | 3148 | * Parameters: |
| | 3149 | * node - {E4XElement} A GML node. |
| | 3150 | * |
| | 3151 | * Returns: |
| | 3152 | * {<ZOO.Geometry.Polygon>} A polygon geometry. |
| | 3153 | */ |
| | 3154 | 'polygon': function(node) { |
| | 3155 | nodeList = node..*::LinearRing; |
| | 3156 | var components = []; |
| | 3157 | if(nodeList.length() > 0) { |
| | 3158 | // this assumes exterior ring first, inner rings after |
| | 3159 | var ring; |
| | 3160 | for(var i=0, len = nodeList.length(); i<len; ++i) { |
| | 3161 | ring = this.parseGeometry.linestring.apply(this,[nodeList[i], true]); |
| | 3162 | if(ring) |
| | 3163 | components.push(ring); |
| | 3164 | } |
| | 3165 | } |
| | 3166 | return new ZOO.Geometry.Polygon(components); |
| | 3167 | }, |
| | 3168 | /** |
| | 3169 | * Method: parseGeometry.multipolygon |
| | 3170 | * Given a GML node representing a multipolygon geometry, create a |
| | 3171 | * ZOO multipolygon geometry. |
| | 3172 | * |
| | 3173 | * Parameters: |
| | 3174 | * node - {E4XElement} A GML node. |
| | 3175 | * |
| | 3176 | * Returns: |
| | 3177 | * {<ZOO.Geometry.MultiPolygon>} A multipolygon geometry. |
| | 3178 | */ |
| | 3179 | 'multipolygon': function(node) { |
| | 3180 | var nodeList = node..*::Polygon; |
| | 3181 | var components = []; |
| | 3182 | if(nodeList.length() > 0) { |
| | 3183 | var polygon; |
| | 3184 | for(var i=0, len=nodeList.length(); i<len; ++i) { |
| | 3185 | polygon = this.parseGeometry.polygon.apply(this, [nodeList[i]]); |
| | 3186 | if(polygon) |
| | 3187 | components.push(polygon); |
| | 3188 | } |
| | 3189 | } |
| | 3190 | return new ZOO.Geometry.MultiPolygon(components); |
| | 3191 | }, |
| | 3192 | /** |
| | 3193 | * Method: parseGeometry.polygon |
| | 3194 | * Given a GML node representing an envelope, create a |
| | 3195 | * ZOO polygon geometry. |
| | 3196 | * |
| | 3197 | * Parameters: |
| | 3198 | * node - {E4XElement} A GML node. |
| | 3199 | * |
| | 3200 | * Returns: |
| | 3201 | * {<ZOO.Geometry.Polygon>} A polygon geometry. |
| | 3202 | */ |
| | 3203 | 'envelope': function(node) { |
| | 3204 | var components = []; |
| | 3205 | var coordString; |
| | 3206 | var envelope; |
| | 3207 | var lpoint = node..*::lowerCorner; |
| | 3208 | if (lpoint.length() > 0) { |
| | 3209 | var coords = []; |
| | 3210 | if(lpoint.length() > 0) { |
| | 3211 | coordString = lpoint[0].toString(); |
| | 3212 | coordString = coordString.replace(this.regExes.trimSpace, ""); |
| | 3213 | coords = coordString.split(this.regExes.splitSpace); |
| | 3214 | } |
| | 3215 | if(coords.length == 2) |
| | 3216 | coords[2] = null; |
| | 3217 | if (this.xy) |
| | 3218 | var lowerPoint = new ZOO.Geometry.Point(coords[0], coords[1],coords[2]); |
| | 3219 | else |
| | 3220 | var lowerPoint = new ZOO.Geometry.Point(coords[1], coords[0],coords[2]); |
| | 3221 | } |
| | 3222 | var upoint = node..*::upperCorner; |
| | 3223 | if (upoint.length() > 0) { |
| | 3224 | var coords = []; |
| | 3225 | if(upoint.length > 0) { |
| | 3226 | coordString = upoint[0].toString(); |
| | 3227 | coordString = coordString.replace(this.regExes.trimSpace, ""); |
| | 3228 | coords = coordString.split(this.regExes.splitSpace); |
| | 3229 | } |
| | 3230 | if(coords.length == 2) |
| | 3231 | coords[2] = null; |
| | 3232 | if (this.xy) |
| | 3233 | var upperPoint = new ZOO.Geometry.Point(coords[0], coords[1],coords[2]); |
| | 3234 | else |
| | 3235 | var upperPoint = new ZOO.Geometry.Point(coords[1], coords[0],coords[2]); |
| | 3236 | } |
| | 3237 | if (lowerPoint && upperPoint) { |
| | 3238 | components.push(new ZOO.Geometry.Point(lowerPoint.x, lowerPoint.y)); |
| | 3239 | components.push(new ZOO.Geometry.Point(upperPoint.x, lowerPoint.y)); |
| | 3240 | components.push(new ZOO.Geometry.Point(upperPoint.x, upperPoint.y)); |
| | 3241 | components.push(new ZOO.Geometry.Point(lowerPoint.x, upperPoint.y)); |
| | 3242 | components.push(new ZOO.Geometry.Point(lowerPoint.x, lowerPoint.y)); |
| | 3243 | var ring = new ZOO.Geometry.LinearRing(components); |
| | 3244 | envelope = new ZOO.Geometry.Polygon([ring]); |
| | 3245 | } |
| | 3246 | return envelope; |
| | 3247 | } |
| | 3248 | }, |
| | 3249 | /** |
| | 3250 | * Method: parseAttributes |
| | 3251 | * |
| | 3252 | * Parameters: |
| | 3253 | * node - {<E4XElement>} |
| | 3254 | * |
| | 3255 | * Returns: |
| | 3256 | * {Object} An attributes object. |
| | 3257 | */ |
| | 3258 | parseAttributes: function(node) { |
| | 3259 | var attributes = {}; |
| | 3260 | // assume attributes are children of the first type 1 child |
| | 3261 | var childNode = node.*::*[0]; |
| | 3262 | var child, grandchildren; |
| | 3263 | var children = childNode.*::*; |
| | 3264 | for(var i=0, len=children.length(); i<len; ++i) { |
| | 3265 | child = children[i]; |
| | 3266 | grandchildren = child..*::*; |
| | 3267 | if(grandchildren.length() == 1) { |
| | 3268 | var name = child.localName(); |
| | 3269 | var value = child.toString(); |
| | 3270 | if (value) { |
| | 3271 | value = value.replace(this.regExes.trimSpace, ""); |
| | 3272 | attributes[name] = value; |
| | 3273 | } else |
| | 3274 | attributes[name] = null; |
| | 3275 | } |
| | 3276 | } |
| | 3277 | return attributes; |
| | 3278 | }, |
| | 3279 | /** |
| | 3280 | * Method: write |
| | 3281 | * Generate a GML document string given a list of features. |
| | 3282 | * |
| | 3283 | * Parameters: |
| | 3284 | * features - {Array(<ZOO.Feature>)} List of features to |
| | 3285 | * serialize into a string. |
| | 3286 | * |
| | 3287 | * Returns: |
| | 3288 | * {String} A string representing the GML document. |
| | 3289 | */ |
| | 3290 | write: function(features) { |
| | 3291 | if(!(features instanceof Array)) { |
| | 3292 | features = [features]; |
| | 3293 | } |
| | 3294 | var pfx = this.defaultPrefix; |
| | 3295 | var name = pfx+':'+this.collectionName; |
| | 3296 | var gml = new XML('<'+name+' xmlns:'+pfx+'="'+this.namespaces[pfx]+'" xmlns:gml="'+this.namespaces['gml']+'" xmlns:xsi="'+this.namespaces['xsi']+'" xsi:schemaLocation="'+this.schemaLocation+'"></'+name+'>'); |
| | 3297 | for(var i=0; i<features.length; i++) { |
| | 3298 | gml.*::*[i] = this.createFeature(features[i]); |
| | 3299 | } |
| | 3300 | return gml.toXMLString(); |
| | 3301 | }, |
| | 3302 | /** |
| | 3303 | * Method: createFeature |
| | 3304 | * Accept an ZOO.Feature, and build a GML node for it. |
| | 3305 | * |
| | 3306 | * Parameters: |
| | 3307 | * feature - {<ZOO.Feature>} The feature to be built as GML. |
| | 3308 | * |
| | 3309 | * Returns: |
| | 3310 | * {E4XElement} A node reprensting the feature in GML. |
| | 3311 | */ |
| | 3312 | createFeature: function(feature) { |
| | 3313 | var pfx = this.defaultPrefix; |
| | 3314 | var name = pfx+':'+this.featureName; |
| | 3315 | var fid = feature.fid || feature.id; |
| | 3316 | var gml = new XML('<gml:featureMember xmlns:gml="'+this.namespaces['gml']+'"><'+name+' xmlns:'+pfx+'="'+this.namespaces[pfx]+'" fid="'+fid+'"></'+name+'></gml:featureMember>'); |
| | 3317 | var geometry = feature.geometry; |
| | 3318 | gml.*::*[0].*::* = this.buildGeometryNode(geometry); |
| | 3319 | for(var attr in feature.attributes) { |
| | 3320 | var attrNode = new XML('<'+pfx+':'+attr+' xmlns:'+pfx+'="'+this.namespaces[pfx]+'">'+feature.attributes[attr]+'</'+pfx+':'+attr+'>'); |
| | 3321 | gml.*::*[0].appendChild(attrNode); |
| | 3322 | } |
| | 3323 | return gml; |
| | 3324 | }, |
| | 3325 | /** |
| | 3326 | * Method: buildGeometryNode |
| | 3327 | * |
| | 3328 | * Parameters: |
| | 3329 | * geometry - {<ZOO.Geometry>} The geometry to be built as GML. |
| | 3330 | * |
| | 3331 | * Returns: |
| | 3332 | * {E4XElement} A node reprensting the geometry in GML. |
| | 3333 | */ |
| | 3334 | buildGeometryNode: function(geometry) { |
| | 3335 | if (this.externalProjection && this.internalProjection) { |
| | 3336 | geometry = geometry.clone(); |
| | 3337 | geometry.transform(this.internalProjection, |
| | 3338 | this.externalProjection); |
| | 3339 | } |
| | 3340 | var className = geometry.CLASS_NAME; |
| | 3341 | var type = className.substring(className.lastIndexOf(".") + 1); |
| | 3342 | var builder = this.buildGeometry[type.toLowerCase()]; |
| | 3343 | var pfx = this.defaultPrefix; |
| | 3344 | var name = pfx+':'+this.geometryName; |
| | 3345 | var gml = new XML('<'+name+' xmlns:'+pfx+'="'+this.namespaces[pfx]+'"></'+name+'>'); |
| | 3346 | if (builder) |
| | 3347 | gml.*::* = builder.apply(this, [geometry]); |
| | 3348 | return gml; |
| | 3349 | }, |
| | 3350 | /** |
| | 3351 | * Property: buildGeometry |
| | 3352 | * Object containing methods to do the actual geometry node building |
| | 3353 | * based on geometry type. |
| | 3354 | */ |
| | 3355 | buildGeometry: { |
| | 3356 | /** |
| | 3357 | * Method: buildGeometry.point |
| | 3358 | * Given a ZOO point geometry, create a GML point. |
| | 3359 | * |
| | 3360 | * Parameters: |
| | 3361 | * geometry - {<ZOO.Geometry.Point>} A point geometry. |
| | 3362 | * |
| | 3363 | * Returns: |
| | 3364 | * {E4XElement} A GML point node. |
| | 3365 | */ |
| | 3366 | 'point': function(geometry) { |
| | 3367 | var gml = new XML('<gml:Point xmlns:gml="'+this.namespaces['gml']+'"></gml:Point>'); |
| | 3368 | gml.*::*[0] = this.buildCoordinatesNode(geometry); |
| | 3369 | return gml; |
| | 3370 | }, |
| | 3371 | /** |
| | 3372 | * Method: buildGeometry.multipoint |
| | 3373 | * Given a ZOO multipoint geometry, create a GML multipoint. |
| | 3374 | * |
| | 3375 | * Parameters: |
| | 3376 | * geometry - {<ZOO.Geometry.MultiPoint>} A multipoint geometry. |
| | 3377 | * |
| | 3378 | * Returns: |
| | 3379 | * {E4XElement} A GML multipoint node. |
| | 3380 | */ |
| | 3381 | 'multipoint': function(geometry) { |
| | 3382 | var gml = new XML('<gml:MultiPoint xmlns:gml="'+this.namespaces['gml']+'"></gml:MultiPoint>'); |
| | 3383 | var points = geometry.components; |
| | 3384 | var pointMember; |
| | 3385 | for(var i=0; i<points.length; i++) { |
| | 3386 | pointMember = new XML('<gml:pointMember xmlns:gml="'+this.namespaces['gml']+'"></gml:pointMember>'); |
| | 3387 | pointMember.*::* = this.buildGeometry.point.apply(this,[points[i]]); |
| | 3388 | gml.*::*[i] = pointMember; |
| | 3389 | } |
| | 3390 | return gml; |
| | 3391 | }, |
| | 3392 | /** |
| | 3393 | * Method: buildGeometry.linestring |
| | 3394 | * Given a ZOO linestring geometry, create a GML linestring. |
| | 3395 | * |
| | 3396 | * Parameters: |
| | 3397 | * geometry - {<ZOO.Geometry.LineString>} A linestring geometry. |
| | 3398 | * |
| | 3399 | * Returns: |
| | 3400 | * {E4XElement} A GML linestring node. |
| | 3401 | */ |
| | 3402 | 'linestring': function(geometry) { |
| | 3403 | var gml = new XML('<gml:LineString xmlns:gml="'+this.namespaces['gml']+'"></gml:LineString>'); |
| | 3404 | gml.*::*[0] = this.buildCoordinatesNode(geometry); |
| | 3405 | return gml; |
| | 3406 | }, |
| | 3407 | /** |
| | 3408 | * Method: buildGeometry.multilinestring |
| | 3409 | * Given a ZOO multilinestring geometry, create a GML |
| | 3410 | * multilinestring. |
| | 3411 | * |
| | 3412 | * Parameters: |
| | 3413 | * geometry - {<ZOO.Geometry.MultiLineString>} A multilinestring |
| | 3414 | * geometry. |
| | 3415 | * |
| | 3416 | * Returns: |
| | 3417 | * {E4XElement} A GML multilinestring node. |
| | 3418 | */ |
| | 3419 | 'multilinestring': function(geometry) { |
| | 3420 | var gml = new XML('<gml:MultiLineString xmlns:gml="'+this.namespaces['gml']+'"></gml:MultiLineString>'); |
| | 3421 | var lines = geometry.components; |
| | 3422 | var lineMember; |
| | 3423 | for(var i=0; i<lines.length; i++) { |
| | 3424 | lineMember = new XML('<gml:lineStringMember xmlns:gml="'+this.namespaces['gml']+'"></gml:lineStringMember>'); |
| | 3425 | lineMember.*::* = this.buildGeometry.linestring.apply(this,[lines[i]]); |
| | 3426 | gml.*::*[i] = lineMember; |
| | 3427 | } |
| | 3428 | return gml; |
| | 3429 | }, |
| | 3430 | /** |
| | 3431 | * Method: buildGeometry.linearring |
| | 3432 | * Given a ZOO linearring geometry, create a GML linearring. |
| | 3433 | * |
| | 3434 | * Parameters: |
| | 3435 | * geometry - {<ZOO.Geometry.LinearRing>} A linearring geometry. |
| | 3436 | * |
| | 3437 | * Returns: |
| | 3438 | * {E4XElement} A GML linearring node. |
| | 3439 | */ |
| | 3440 | 'linearring': function(geometry) { |
| | 3441 | var gml = new XML('<gml:LinearRing xmlns:gml="'+this.namespaces['gml']+'"></gml:LinearRing>'); |
| | 3442 | gml.*::*[0] = this.buildCoordinatesNode(geometry); |
| | 3443 | return gml; |
| | 3444 | }, |
| | 3445 | /** |
| | 3446 | * Method: buildGeometry.polygon |
| | 3447 | * Given an ZOO polygon geometry, create a GML polygon. |
| | 3448 | * |
| | 3449 | * Parameters: |
| | 3450 | * geometry - {<ZOO.Geometry.Polygon>} A polygon geometry. |
| | 3451 | * |
| | 3452 | * Returns: |
| | 3453 | * {E4XElement} A GML polygon node. |
| | 3454 | */ |
| | 3455 | 'polygon': function(geometry) { |
| | 3456 | var gml = new XML('<gml:Polygon xmlns:gml="'+this.namespaces['gml']+'"></gml:Polygon>'); |
| | 3457 | var rings = geometry.components; |
| | 3458 | var ringMember, type; |
| | 3459 | for(var i=0; i<rings.length; ++i) { |
| | 3460 | type = (i==0) ? "outerBoundaryIs" : "innerBoundaryIs"; |
| | 3461 | var ringMember = new XML('<gml:'+type+' xmlns:gml="'+this.namespaces['gml']+'"></gml:'+type+'>'); |
| | 3462 | ringMember.*::* = this.buildGeometry.linearring.apply(this,[rings[i]]); |
| | 3463 | gml.*::*[i] = ringMember; |
| | 3464 | } |
| | 3465 | return gml; |
| | 3466 | }, |
| | 3467 | /** |
| | 3468 | * Method: buildGeometry.multipolygon |
| | 3469 | * Given a ZOO multipolygon geometry, create a GML multipolygon. |
| | 3470 | * |
| | 3471 | * Parameters: |
| | 3472 | * geometry - {<ZOO.Geometry.MultiPolygon>} A multipolygon |
| | 3473 | * geometry. |
| | 3474 | * |
| | 3475 | * Returns: |
| | 3476 | * {E4XElement} A GML multipolygon node. |
| | 3477 | */ |
| | 3478 | 'multipolygon': function(geometry) { |
| | 3479 | var gml = new XML('<gml:MultiPolygon xmlns:gml="'+this.namespaces['gml']+'"></gml:MultiPolygon>'); |
| | 3480 | var polys = geometry.components; |
| | 3481 | var polyMember; |
| | 3482 | for(var i=0; i<polys.length; i++) { |
| | 3483 | polyMember = new XML('<gml:polygonMember xmlns:gml="'+this.namespaces['gml']+'"></gml:polygonMember>'); |
| | 3484 | polyMember.*::* = this.buildGeometry.polygon.apply(this,[polys[i]]); |
| | 3485 | gml.*::*[i] = polyMember; |
| | 3486 | } |
| | 3487 | return gml; |
| | 3488 | } |
| | 3489 | }, |
| | 3490 | /** |
| | 3491 | * Method: buildCoordinatesNode |
| | 3492 | * builds the coordinates XmlNode |
| | 3493 | * (code) |
| | 3494 | * <gml:coordinates decimal="." cs="," ts=" ">...</gml:coordinates> |
| | 3495 | * (end) |
| | 3496 | * Parameters: |
| | 3497 | * geometry - {<ZOO.Geometry>} |
| | 3498 | * |
| | 3499 | * Returns: |
| | 3500 | * {E4XElement} created E4XElement |
| | 3501 | */ |
| | 3502 | buildCoordinatesNode: function(geometry) { |
| | 3503 | var parts = []; |
| | 3504 | if(geometry instanceof ZOO.Bounds){ |
| | 3505 | parts.push(geometry.left + "," + geometry.bottom); |
| | 3506 | parts.push(geometry.right + "," + geometry.top); |
| | 3507 | } else { |
| | 3508 | var points = (geometry.components) ? geometry.components : [geometry]; |
| | 3509 | for(var i=0; i<points.length; i++) { |
| | 3510 | parts.push(points[i].x + "," + points[i].y); |
| | 3511 | } |
| | 3512 | } |
| | 3513 | return new XML('<gml:coordinates xmlns:gml="'+this.namespaces['gml']+'" decimal="." cs=", " ts=" ">'+parts.join(" ")+'</gml:coordinates>'); |
| | 3514 | }, |
| | 3515 | CLASS_NAME: 'ZOO.Format.GML' |
| | 3516 | }); |
| | 3517 | /** |
| | 3518 | * Class: ZOO.Format.WPS |
| | 3519 | * Read/Write WPS. Create a new instance with the <ZOO.Format.WPS> |
| | 3520 | * constructor. Supports only parseExecuteResponse. |
| | 3521 | * |
| | 3522 | * Inherits from: |
| | 3523 | * - <ZOO.Format> |
| | 3524 | */ |
| | 3525 | ZOO.Format.WPS = ZOO.Class(ZOO.Format, { |
| | 3526 | /** |
| | 3527 | * Property: schemaLocation |
| | 3528 | * {String} Schema location for a particular minor version. |
| | 3529 | */ |
| | 3530 | schemaLocation: "http://www.opengis.net/wps/1.0.0/../wpsExecute_request.xsd", |
| | 3531 | /** |
| | 3532 | * Property: namespaces |
| | 3533 | * {Object} Mapping of namespace aliases to namespace URIs. |
| | 3534 | */ |
| | 3535 | namespaces: { |
| | 3536 | ows: "http://www.opengis.net/ows/1.1", |
| | 3537 | wps: "http://www.opengis.net/wps/1.0.0", |
| | 3538 | xlink: "http://www.w3.org/1999/xlink", |
| | 3539 | xsi: "http://www.w3.org/2001/XMLSchema-instance", |
| | 3540 | }, |
| | 3541 | /** |
| | 3542 | * Method: read |
| | 3543 | * |
| | 3544 | * Parameters: |
| | 3545 | * data - {String} A WPS xml document |
| | 3546 | * |
| | 3547 | * Returns: |
| | 3548 | * {Object} Execute response. |
| | 3549 | */ |
| | 3550 | read:function(data) { |
| | 3551 | data = data.replace(/^<\?xml\s+version\s*=\s*(["'])[^\1]+\1[^?]*\?>/, ""); |
| | 3552 | data = new XML(data); |
| | 3553 | switch (data.localName()) { |
| | 3554 | case 'ExecuteResponse': |
| | 3555 | return this.parseExecuteResponse(data); |
| | 3556 | default: |
| | 3557 | return null; |
| | 3558 | } |
| | 3559 | }, |
| | 3560 | /** |
| | 3561 | * Method: parseExecuteResponse |
| | 3562 | * |
| | 3563 | * Parameters: |
| | 3564 | * node - {E4XElement} A WPS ExecuteResponse document |
| | 3565 | * |
| | 3566 | * Returns: |
| | 3567 | * {Object} Execute response. |
| | 3568 | */ |
| | 3569 | parseExecuteResponse: function(node) { |
| | 3570 | var outputs = node.*::ProcessOutputs.*::Output; |
| | 3571 | if (outputs.length() > 0) { |
| | 3572 | var data = outputs[0].*::Data.*::*[0]; |
| | 3573 | var builder = this.parseData[data.localName().toLowerCase()]; |
| | 3574 | if (builder) |
| | 3575 | return builder.apply(this,[data]); |
| | 3576 | else |
| | 3577 | return null; |
| | 3578 | } else |
| | 3579 | return null; |
| | 3580 | }, |
| | 3581 | /** |
| | 3582 | * Property: parseData |
| | 3583 | * Object containing methods to analyse data response. |
| | 3584 | */ |
| | 3585 | parseData: { |
| | 3586 | /** |
| | 3587 | * Method: parseData.complexdata |
| | 3588 | * Given an Object representing the WPS complex data response. |
| | 3589 | * |
| | 3590 | * Parameters: |
| | 3591 | * node - {E4XElement} A WPS node. |
| | 3592 | * |
| | 3593 | * Returns: |
| | 3594 | * {Object} A WPS complex data response. |
| | 3595 | */ |
| | 3596 | 'complexdata': function(node) { |
| | 3597 | var result = {value:node.toString()}; |
| | 3598 | if (node.@mimeType.length()>0) |
| | 3599 | result.mimeType = node.@mimeType; |
| | 3600 | if (node.@encoding.length()>0) |
| | 3601 | result.encoding = node.@encoding; |
| | 3602 | if (node.@schema.length()>0) |
| | 3603 | result.schema = node.@schema; |
| | 3604 | return result; |
| | 3605 | }, |
| | 3606 | /** |
| | 3607 | * Method: parseData.literaldata |
| | 3608 | * Given an Object representing the WPS literal data response. |
| | 3609 | * |
| | 3610 | * Parameters: |
| | 3611 | * node - {E4XElement} A WPS node. |
| | 3612 | * |
| | 3613 | * Returns: |
| | 3614 | * {Object} A WPS literal data response. |
| | 3615 | */ |
| | 3616 | 'literaldata': function(node) { |
| | 3617 | var result = {value:node.toString()}; |
| | 3618 | if (node.@dataType.length()>0) |
| | 3619 | result.dataType = node.@dataType; |
| | 3620 | if (node.@uom.length()>0) |
| | 3621 | result.uom = node.@uom; |
| | 3622 | return result; |
| | 3623 | } |
| | 3624 | }, |
| | 3625 | CLASS_NAME: 'ZOO.Format.WPS' |
| | 3626 | }); |
| | 3627 | |
| | 3628 | /** |
| | 3629 | * Class: ZOO.Feature |
| | 3630 | * Vector features use the ZOO.Geometry classes as geometry description. |
| | 3631 | * They have an 'attributes' property, which is the data object |
| | 3632 | */ |
| | 3633 | ZOO.Feature = ZOO.Class({ |
| | 3634 | /** |
| | 3635 | * Property: fid |
| | 3636 | * {String} |
| | 3637 | */ |
| | 3638 | fid: null, |
| | 3639 | /** |
| | 3640 | * Property: geometry |
| | 3641 | * {<ZOO.Geometry>} |
| | 3642 | */ |
| | 3643 | geometry: null, |
| | 3644 | /** |
| | 3645 | * Property: attributes |
| | 3646 | * {Object} This object holds arbitrary properties that describe the |
| | 3647 | * feature. |
| | 3648 | */ |
| | 3649 | attributes: null, |
| | 3650 | /** |
| | 3651 | * Property: bounds |
| | 3652 | * {<ZOO.Bounds>} The box bounding that feature's geometry, that |
| | 3653 | * property can be set by an <ZOO.Format> object when |
| | 3654 | * deserializing the feature, so in most cases it represents an |
| | 3655 | * information set by the server. |
| | 3656 | */ |
| | 3657 | bounds: null, |
| | 3658 | /** |
| | 3659 | * Constructor: ZOO.Feature |
| | 3660 | * Create a vector feature. |
| | 3661 | * |
| | 3662 | * Parameters: |
| | 3663 | * geometry - {<ZOO.Geometry>} The geometry that this feature |
| | 3664 | * represents. |
| | 3665 | * attributes - {Object} An optional object that will be mapped to the |
| | 3666 | * <attributes> property. |
| | 3667 | */ |
| | 3668 | initialize: function(geometry, attributes) { |
| | 3669 | this.geometry = geometry ? geometry : null; |
| | 3670 | this.attributes = {}; |
| | 3671 | if (attributes) |
| | 3672 | this.attributes = ZOO.extend(this.attributes,attributes); |
| | 3673 | }, |
| | 3674 | /** |
| | 3675 | * Method: destroy |
| | 3676 | * nullify references to prevent circular references and memory leaks |
| | 3677 | */ |
| | 3678 | destroy: function() { |
| | 3679 | this.geometry = null; |
| | 3680 | }, |
| | 3681 | /** |
| | 3682 | * Method: clone |
| | 3683 | * Create a clone of this vector feature. Does not set any non-standard |
| | 3684 | * properties. |
| | 3685 | * |
| | 3686 | * Returns: |
| | 3687 | * {<ZOO.Feature>} An exact clone of this vector feature. |
| | 3688 | */ |
| | 3689 | clone: function () { |
| | 3690 | return new ZOO.Feature(this.geometry ? this.geometry.clone() : null, |
| | 3691 | this.attributes); |
| | 3692 | }, |
| | 3693 | /** |
| | 3694 | * Method: move |
| | 3695 | * Moves the feature and redraws it at its new location |
| | 3696 | * |
| | 3697 | * Parameters: |
| | 3698 | * x - {Float} |
| | 3699 | * y - {Float} |
| | 3700 | */ |
| | 3701 | move: function(x, y) { |
| | 3702 | if(!this.geometry.move) |
| | 3703 | return; |
| | 3704 | |
| | 3705 | this.geometry.move(x,y); |
| | 3706 | return this.geometry; |
| | 3707 | }, |
| | 3708 | CLASS_NAME: 'ZOO.Feature' |
| | 3709 | }); |
| | 3710 | |
| | 3711 | /** |
| | 3712 | * Class: ZOO.Geometry |
| | 3713 | * A Geometry is a description of a geographic object. Create an instance |
| | 3714 | * of this class with the <ZOO.Geometry> constructor. This is a base class, |
| | 3715 | * typical geometry types are described by subclasses of this class. |
| | 3716 | */ |
| | 3717 | ZOO.Geometry = ZOO.Class({ |
| | 3718 | /** |
| | 3719 | * Property: id |
| | 3720 | * {String} A unique identifier for this geometry. |
| | 3721 | */ |
| | 3722 | id: null, |
| | 3723 | /** |
| | 3724 | * Property: parent |
| | 3725 | * {<ZOO.Geometry>}This is set when a Geometry is added as component |
| | 3726 | * of another geometry |
| | 3727 | */ |
| | 3728 | parent: null, |
| | 3729 | /** |
| | 3730 | * Property: bounds |
| | 3731 | * {<ZOO.Bounds>} The bounds of this geometry |
| | 3732 | */ |
| | 3733 | bounds: null, |
| | 3734 | /** |
| | 3735 | * Constructor: ZOO.Geometry |
| | 3736 | * Creates a geometry object. |
| | 3737 | */ |
| | 3738 | initialize: function() { |
| | 3739 | //generate unique id |
| | 3740 | }, |
| | 3741 | /** |
| | 3742 | * Method: destroy |
| | 3743 | * Destroy this geometry. |
| | 3744 | */ |
| | 3745 | destroy: function() { |
| | 3746 | this.id = null; |
| | 3747 | this.bounds = null; |
| | 3748 | }, |
| | 3749 | /** |
| | 3750 | * Method: clone |
| | 3751 | * Create a clone of this geometry. Does not set any non-standard |
| | 3752 | * properties of the cloned geometry. |
| | 3753 | * |
| | 3754 | * Returns: |
| | 3755 | * {<ZOO.Geometry>} An exact clone of this geometry. |
| | 3756 | */ |
| | 3757 | clone: function() { |
| | 3758 | return new ZOO.Geometry(); |
| | 3759 | }, |
| | 3760 | /** |
| | 3761 | * Method: extendBounds |
| | 3762 | * Extend the existing bounds to include the new bounds. |
| | 3763 | * If geometry's bounds is not yet set, then set a new Bounds. |
| | 3764 | * |
| | 3765 | * Parameters: |
| | 3766 | * newBounds - {<ZOO.Bounds>} |
| | 3767 | */ |
| | 3768 | extendBounds: function(newBounds){ |
| | 3769 | var bounds = this.getBounds(); |
| | 3770 | if (!bounds) |
| | 3771 | this.setBounds(newBounds); |
| | 3772 | else |
| | 3773 | this.bounds.extend(newBounds); |
| | 3774 | }, |
| | 3775 | /** |
| | 3776 | * Set the bounds for this Geometry. |
| | 3777 | * |
| | 3778 | * Parameters: |
| | 3779 | * bounds - {<ZOO.Bounds>} |
| | 3780 | */ |
| | 3781 | setBounds: function(bounds) { |
| | 3782 | if (bounds) |
| | 3783 | this.bounds = bounds.clone(); |
| | 3784 | }, |
| | 3785 | /** |
| | 3786 | * Method: clearBounds |
| | 3787 | * Nullify this components bounds and that of its parent as well. |
| | 3788 | */ |
| | 3789 | clearBounds: function() { |
| | 3790 | this.bounds = null; |
| | 3791 | if (this.parent) |
| | 3792 | this.parent.clearBounds(); |
| | 3793 | }, |
| | 3794 | /** |
| | 3795 | * Method: getBounds |
| | 3796 | * Get the bounds for this Geometry. If bounds is not set, it |
| | 3797 | * is calculated again, this makes queries faster. |
| | 3798 | * |
| | 3799 | * Returns: |
| | 3800 | * {<ZOO.Bounds>} |
| | 3801 | */ |
| | 3802 | getBounds: function() { |
| | 3803 | if (this.bounds == null) { |
| | 3804 | this.calculateBounds(); |
| | 3805 | } |
| | 3806 | return this.bounds; |
| | 3807 | }, |
| | 3808 | /** |
| | 3809 | * Method: calculateBounds |
| | 3810 | * Recalculate the bounds for the geometry. |
| | 3811 | */ |
| | 3812 | calculateBounds: function() { |
| | 3813 | // This should be overridden by subclasses. |
| | 3814 | return this.bounds; |
| | 3815 | }, |
| | 3816 | distanceTo: function(geometry, options) { |
| | 3817 | }, |
| | 3818 | getVertices: function(nodes) { |
| | 3819 | }, |
| | 3820 | getLength: function() { |
| | 3821 | return 0.0; |
| | 3822 | }, |
| | 3823 | getArea: function() { |
| | 3824 | return 0.0; |
| | 3825 | }, |
| | 3826 | getCentroid: function() { |
| | 3827 | return null; |
| | 3828 | }, |
| | 3829 | /** |
| | 3830 | * Method: toString |
| | 3831 | * Returns the Well-Known Text representation of a geometry |
| | 3832 | * |
| | 3833 | * Returns: |
| | 3834 | * {String} Well-Known Text |
| | 3835 | */ |
| | 3836 | toString: function() { |
| | 3837 | return ZOO.Format.WKT.prototype.write( |
| | 3838 | new ZOO.Feature(this) |
| | 3839 | ); |
| | 3840 | }, |
| | 3841 | CLASS_NAME: 'ZOO.Geometry' |
| | 3842 | }); |
| | 3843 | /** |
| | 3844 | * Function: OpenLayers.Geometry.fromWKT |
| | 3845 | * Generate a geometry given a Well-Known Text string. |
| | 3846 | * |
| | 3847 | * Parameters: |
| | 3848 | * wkt - {String} A string representing the geometry in Well-Known Text. |
| | 3849 | * |
| | 3850 | * Returns: |
| | 3851 | * {<ZOO.Geometry>} A geometry of the appropriate class. |
| | 3852 | */ |
| | 3853 | ZOO.Geometry.fromWKT = function(wkt) { |
| | 3854 | var format = arguments.callee.format; |
| | 3855 | if(!format) { |
| | 3856 | format = new ZOO.Format.WKT(); |
| | 3857 | arguments.callee.format = format; |
| | 3858 | } |
| | 3859 | var geom; |
| | 3860 | var result = format.read(wkt); |
| | 3861 | if(result instanceof ZOO.Feature) { |
| | 3862 | geom = result.geometry; |
| | 3863 | } else if(result instanceof Array) { |
| | 3864 | var len = result.length; |
| | 3865 | var components = new Array(len); |
| | 3866 | for(var i=0; i<len; ++i) { |
| | 3867 | components[i] = result[i].geometry; |
| | 3868 | } |
| | 3869 | geom = new ZOO.Geometry.Collection(components); |
| | 3870 | } |
| | 3871 | return geom; |
| | 3872 | }; |
| | 3873 | ZOO.Geometry.segmentsIntersect = function(seg1, seg2, options) { |
| | 3874 | var point = options && options.point; |
| | 3875 | var tolerance = options && options.tolerance; |
| | 3876 | var intersection = false; |
| | 3877 | var x11_21 = seg1.x1 - seg2.x1; |
| | 3878 | var y11_21 = seg1.y1 - seg2.y1; |
| | 3879 | var x12_11 = seg1.x2 - seg1.x1; |
| | 3880 | var y12_11 = seg1.y2 - seg1.y1; |
| | 3881 | var y22_21 = seg2.y2 - seg2.y1; |
| | 3882 | var x22_21 = seg2.x2 - seg2.x1; |
| | 3883 | var d = (y22_21 * x12_11) - (x22_21 * y12_11); |
| | 3884 | var n1 = (x22_21 * y11_21) - (y22_21 * x11_21); |
| | 3885 | var n2 = (x12_11 * y11_21) - (y12_11 * x11_21); |
| | 3886 | if(d == 0) { |
| | 3887 | // parallel |
| | 3888 | if(n1 == 0 && n2 == 0) { |
| | 3889 | // coincident |
| | 3890 | intersection = true; |
| | 3891 | } |
| | 3892 | } else { |
| | 3893 | var along1 = n1 / d; |
| | 3894 | var along2 = n2 / d; |
| | 3895 | if(along1 >= 0 && along1 <= 1 && along2 >=0 && along2 <= 1) { |
| | 3896 | // intersect |
| | 3897 | if(!point) { |
| | 3898 | intersection = true; |
| | 3899 | } else { |
| | 3900 | // calculate the intersection point |
| | 3901 | var x = seg1.x1 + (along1 * x12_11); |
| | 3902 | var y = seg1.y1 + (along1 * y12_11); |
| | 3903 | intersection = new ZOO.Geometry.Point(x, y); |
| | 3904 | } |
| | 3905 | } |
| | 3906 | } |
| | 3907 | if(tolerance) { |
| | 3908 | var dist; |
| | 3909 | if(intersection) { |
| | 3910 | if(point) { |
| | 3911 | var segs = [seg1, seg2]; |
| | 3912 | var seg, x, y; |
| | 3913 | // check segment endpoints for proximity to intersection |
| | 3914 | // set intersection to first endpoint within the tolerance |
| | 3915 | outer: for(var i=0; i<2; ++i) { |
| | 3916 | seg = segs[i]; |
| | 3917 | for(var j=1; j<3; ++j) { |
| | 3918 | x = seg["x" + j]; |
| | 3919 | y = seg["y" + j]; |
| | 3920 | dist = Math.sqrt( |
| | 3921 | Math.pow(x - intersection.x, 2) + |
| | 3922 | Math.pow(y - intersection.y, 2) |
| | 3923 | ); |
| | 3924 | if(dist < tolerance) { |
| | 3925 | intersection.x = x; |
| | 3926 | intersection.y = y; |
| | 3927 | break outer; |
| | 3928 | } |
| | 3929 | } |
| | 3930 | } |
| | 3931 | } |
| | 3932 | } else { |
| | 3933 | // no calculated intersection, but segments could be within |
| | 3934 | // the tolerance of one another |
| | 3935 | var segs = [seg1, seg2]; |
| | 3936 | var source, target, x, y, p, result; |
| | 3937 | // check segment endpoints for proximity to intersection |
| | 3938 | // set intersection to first endpoint within the tolerance |
| | 3939 | outer: for(var i=0; i<2; ++i) { |
| | 3940 | source = segs[i]; |
| | 3941 | target = segs[(i+1)%2]; |
| | 3942 | for(var j=1; j<3; ++j) { |
| | 3943 | p = {x: source["x"+j], y: source["y"+j]}; |
| | 3944 | result = ZOO.Geometry.distanceToSegment(p, target); |
| | 3945 | if(result.distance < tolerance) { |
| | 3946 | if(point) { |
| | 3947 | intersection = new ZOO.Geometry.Point(p.x, p.y); |
| | 3948 | } else { |
| | 3949 | intersection = true; |
| | 3950 | } |
| | 3951 | break outer; |
| | 3952 | } |
| | 3953 | } |
| | 3954 | } |
| | 3955 | } |
| | 3956 | } |
| | 3957 | return intersection; |
| | 3958 | }; |
| | 3959 | ZOO.Geometry.distanceToSegment = function(point, segment) { |
| | 3960 | var x0 = point.x; |
| | 3961 | var y0 = point.y; |
| | 3962 | var x1 = segment.x1; |
| | 3963 | var y1 = segment.y1; |
| | 3964 | var x2 = segment.x2; |
| | 3965 | var y2 = segment.y2; |
| | 3966 | var dx = x2 - x1; |
| | 3967 | var dy = y2 - y1; |
| | 3968 | var along = ((dx * (x0 - x1)) + (dy * (y0 - y1))) / |
| | 3969 | (Math.pow(dx, 2) + Math.pow(dy, 2)); |
| | 3970 | var x, y; |
| | 3971 | if(along <= 0.0) { |
| | 3972 | x = x1; |
| | 3973 | y = y1; |
| | 3974 | } else if(along >= 1.0) { |
| | 3975 | x = x2; |
| | 3976 | y = y2; |
| | 3977 | } else { |
| | 3978 | x = x1 + along * dx; |
| | 3979 | y = y1 + along * dy; |
| | 3980 | } |
| | 3981 | return { |
| | 3982 | distance: Math.sqrt(Math.pow(x - x0, 2) + Math.pow(y - y0, 2)), |
| | 3983 | x: x, y: y |
| | 3984 | }; |
| | 3985 | }; |
| | 3986 | /** |
| | 3987 | * Class: OpenLayers.Geometry.Collection |
| | 3988 | * A Collection is exactly what it sounds like: A collection of different |
| | 3989 | * Geometries. These are stored in the local parameter <components> (which |
| | 3990 | * can be passed as a parameter to the constructor). |
| | 3991 | * |
| | 3992 | * As new geometries are added to the collection, they are NOT cloned. |
| | 3993 | * When removing geometries, they need to be specified by reference (ie you |
| | 3994 | * have to pass in the *exact* geometry to be removed). |
| | 3995 | * |
| | 3996 | * The <getArea> and <getLength> functions here merely iterate through |
| | 3997 | * the components, summing their respective areas and lengths. |
| | 3998 | * |
| | 3999 | * Create a new instance with the <ZOO.Geometry.Collection> constructor. |
| | 4000 | * |
| | 4001 | * Inerhits from: |
| | 4002 | * - <ZOO.Geometry> |
| | 4003 | */ |
| | 4004 | ZOO.Geometry.Collection = ZOO.Class(ZOO.Geometry, { |
| | 4005 | /** |
| | 4006 | * Property: components |
| | 4007 | * {Array(<ZOO.Geometry>)} The component parts of this geometry |
| | 4008 | */ |
| | 4009 | components: null, |
| | 4010 | /** |
| | 4011 | * Property: componentTypes |
| | 4012 | * {Array(String)} An array of class names representing the types of |
| | 4013 | * components that the collection can include. A null value means the |
| | 4014 | * component types are not restricted. |
| | 4015 | */ |
| | 4016 | componentTypes: null, |
| | 4017 | /** |
| | 4018 | * Constructor: ZOO.Geometry.Collection |
| | 4019 | * Creates a Geometry Collection -- a list of geoms. |
| | 4020 | * |
| | 4021 | * Parameters: |
| | 4022 | * components - {Array(<ZOO.Geometry>)} Optional array of geometries |
| | 4023 | * |
| | 4024 | */ |
| | 4025 | initialize: function (components) { |
| | 4026 | ZOO.Geometry.prototype.initialize.apply(this, arguments); |
| | 4027 | this.components = []; |
| | 4028 | if (components != null) { |
| | 4029 | this.addComponents(components); |
| | 4030 | } |
| | 4031 | }, |
| | 4032 | /** |
| | 4033 | * Method: destroy |
| | 4034 | * Destroy this geometry. |
| | 4035 | */ |
| | 4036 | destroy: function () { |
| | 4037 | this.components.length = 0; |
| | 4038 | this.components = null; |
| | 4039 | }, |
| | 4040 | /** |
| | 4041 | * Method: clone |
| | 4042 | * Clone this geometry. |
| | 4043 | * |
| | 4044 | * Returns: |
| | 4045 | * {<ZOO.Geometry.Collection>} An exact clone of this collection |
| | 4046 | */ |
| | 4047 | clone: function() { |
| | 4048 | var geometry = eval("new " + this.CLASS_NAME + "()"); |
| | 4049 | for(var i=0, len=this.components.length; i<len; i++) { |
| | 4050 | geometry.addComponent(this.components[i].clone()); |
| | 4051 | } |
| | 4052 | return geometry; |
| | 4053 | }, |
| | 4054 | /** |
| | 4055 | * Method: getComponentsString |
| | 4056 | * Get a string representing the components for this collection |
| | 4057 | * |
| | 4058 | * Returns: |
| | 4059 | * {String} A string representation of the components of this geometry |
| | 4060 | */ |
| | 4061 | getComponentsString: function(){ |
| | 4062 | var strings = []; |
| | 4063 | for(var i=0, len=this.components.length; i<len; i++) { |
| | 4064 | strings.push(this.components[i].toShortString()); |
| | 4065 | } |
| | 4066 | return strings.join(","); |
| | 4067 | }, |
| | 4068 | /** |
| | 4069 | * Method: calculateBounds |
| | 4070 | * Recalculate the bounds by iterating through the components and |
| | 4071 | * calling calling extendBounds() on each item. |
| | 4072 | */ |
| | 4073 | calculateBounds: function() { |
| | 4074 | this.bounds = null; |
| | 4075 | if ( this.components && this.components.length > 0) { |
| | 4076 | this.setBounds(this.components[0].getBounds()); |
| | 4077 | for (var i=1, len=this.components.length; i<len; i++) { |
| | 4078 | this.extendBounds(this.components[i].getBounds()); |
| | 4079 | } |
| | 4080 | } |
| | 4081 | return this.bounds |
| | 4082 | }, |
| | 4083 | /** |
| | 4084 | * APIMethod: addComponents |
| | 4085 | * Add components to this geometry. |
| | 4086 | * |
| | 4087 | * Parameters: |
| | 4088 | * components - {Array(<ZOO.Geometry>)} An array of geometries to add |
| | 4089 | */ |
| | 4090 | addComponents: function(components){ |
| | 4091 | if(!(components instanceof Array)) |
| | 4092 | components = [components]; |
| | 4093 | for(var i=0, len=components.length; i<len; i++) { |
| | 4094 | this.addComponent(components[i]); |
| | 4095 | } |
| | 4096 | }, |
| | 4097 | /** |
| | 4098 | * Method: addComponent |
| | 4099 | * Add a new component (geometry) to the collection. If this.componentTypes |
| | 4100 | * is set, then the component class name must be in the componentTypes array. |
| | 4101 | * |
| | 4102 | * The bounds cache is reset. |
| | 4103 | * |
| | 4104 | * Parameters: |
| | 4105 | * component - {<ZOO.Geometry>} A geometry to add |
| | 4106 | * index - {int} Optional index into the array to insert the component |
| | 4107 | * |
| | 4108 | * Returns: |
| | 4109 | * {Boolean} The component geometry was successfully added |
| | 4110 | */ |
| | 4111 | addComponent: function(component, index) { |
| | 4112 | var added = false; |
| | 4113 | if(component) { |
| | 4114 | if(this.componentTypes == null || |
| | 4115 | (ZOO.indexOf(this.componentTypes, |
| | 4116 | component.CLASS_NAME) > -1)) { |
| | 4117 | if(index != null && (index < this.components.length)) { |
| | 4118 | var components1 = this.components.slice(0, index); |
| | 4119 | var components2 = this.components.slice(index, |
| | 4120 | this.components.length); |
| | 4121 | components1.push(component); |
| | 4122 | this.components = components1.concat(components2); |
| | 4123 | } else { |
| | 4124 | this.components.push(component); |
| | 4125 | } |
| | 4126 | component.parent = this; |
| | 4127 | this.clearBounds(); |
| | 4128 | added = true; |
| | 4129 | } |
| | 4130 | } |
| | 4131 | return added; |
| | 4132 | }, |
| | 4133 | /** |
| | 4134 | * Method: removeComponents |
| | 4135 | * Remove components from this geometry. |
| | 4136 | * |
| | 4137 | * Parameters: |
| | 4138 | * components - {Array(<ZOO.Geometry>)} The components to be removed |
| | 4139 | */ |
| | 4140 | removeComponents: function(components) { |
| | 4141 | if(!(components instanceof Array)) |
| | 4142 | components = [components]; |
| | 4143 | for(var i=components.length-1; i>=0; --i) { |
| | 4144 | this.removeComponent(components[i]); |
| | 4145 | } |
| | 4146 | }, |
| | 4147 | /** |
| | 4148 | * Method: removeComponent |
| | 4149 | * Remove a component from this geometry. |
| | 4150 | * |
| | 4151 | * Parameters: |
| | 4152 | * component - {<ZOO.Geometry>} |
| | 4153 | */ |
| | 4154 | removeComponent: function(component) { |
| | 4155 | ZOO.removeItem(this.components, component); |
| | 4156 | // clearBounds() so that it gets recalculated on the next call |
| | 4157 | // to this.getBounds(); |
| | 4158 | this.clearBounds(); |
| | 4159 | }, |
| | 4160 | /** |
| | 4161 | * Method: getLength |
| | 4162 | * Calculate the length of this geometry |
| | 4163 | * |
| | 4164 | * Returns: |
| | 4165 | * {Float} The length of the geometry |
| | 4166 | */ |
| | 4167 | getLength: function() { |
| | 4168 | var length = 0.0; |
| | 4169 | for (var i=0, len=this.components.length; i<len; i++) { |
| | 4170 | length += this.components[i].getLength(); |
| | 4171 | } |
| | 4172 | return length; |
| | 4173 | }, |
| | 4174 | /** |
| | 4175 | * APIMethod: getArea |
| | 4176 | * Calculate the area of this geometry. Note how this function is |
| | 4177 | * overridden in <ZOO.Geometry.Polygon>. |
| | 4178 | * |
| | 4179 | * Returns: |
| | 4180 | * {Float} The area of the collection by summing its parts |
| | 4181 | */ |
| | 4182 | getArea: function() { |
| | 4183 | var area = 0.0; |
| | 4184 | for (var i=0, len=this.components.length; i<len; i++) { |
| | 4185 | area += this.components[i].getArea(); |
| | 4186 | } |
| | 4187 | return area; |
| | 4188 | }, |
| | 4189 | /** |
| | 4190 | * APIMethod: getGeodesicArea |
| | 4191 | * Calculate the approximate area of the polygon were it projected onto |
| | 4192 | * the earth. |
| | 4193 | * |
| | 4194 | * Parameters: |
| | 4195 | * projection - {<ZOO.Projection>} The spatial reference system |
| | 4196 | * for the geometry coordinates. If not provided, Geographic/WGS84 is |
| | 4197 | * assumed. |
| | 4198 | * |
| | 4199 | * Reference: |
| | 4200 | * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for |
| | 4201 | * Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion |
| | 4202 | * Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409 |
| | 4203 | * |
| | 4204 | * Returns: |
| | 4205 | * {float} The approximate geodesic area of the geometry in square meters. |
| | 4206 | */ |
| | 4207 | getGeodesicArea: function(projection) { |
| | 4208 | var area = 0.0; |
| | 4209 | for(var i=0, len=this.components.length; i<len; i++) { |
| | 4210 | area += this.components[i].getGeodesicArea(projection); |
| | 4211 | } |
| | 4212 | return area; |
| | 4213 | }, |
| | 4214 | /** |
| | 4215 | * Method: getCentroid |
| | 4216 | * |
| | 4217 | * Returns: |
| | 4218 | * {<ZOO.Geometry.Point>} The centroid of the collection |
| | 4219 | */ |
| | 4220 | getCentroid: function() { |
| | 4221 | return this.components.length && this.components[0].getCentroid(); |
| | 4222 | }, |
| | 4223 | /** |
| | 4224 | * Method: getGeodesicLength |
| | 4225 | * Calculate the approximate length of the geometry were it projected onto |
| | 4226 | * the earth. |
| | 4227 | * |
| | 4228 | * projection - {<ZOO.Projection>} The spatial reference system |
| | 4229 | * for the geometry coordinates. If not provided, Geographic/WGS84 is |
| | 4230 | * assumed. |
| | 4231 | * |
| | 4232 | * Returns: |
| | 4233 | * {Float} The appoximate geodesic length of the geometry in meters. |
| | 4234 | */ |
| | 4235 | getGeodesicLength: function(projection) { |
| | 4236 | var length = 0.0; |
| | 4237 | for(var i=0, len=this.components.length; i<len; i++) { |
| | 4238 | length += this.components[i].getGeodesicLength(projection); |
| | 4239 | } |
| | 4240 | return length; |
| | 4241 | }, |
| | 4242 | /** |
| | 4243 | * Method: move |
| | 4244 | * Moves a geometry by the given displacement along positive x and y axes. |
| | 4245 | * This modifies the position of the geometry and clears the cached |
| | 4246 | * bounds. |
| | 4247 | * |
| | 4248 | * Parameters: |
| | 4249 | * x - {Float} Distance to move geometry in positive x direction. |
| | 4250 | * y - {Float} Distance to move geometry in positive y direction. |
| | 4251 | */ |
| | 4252 | move: function(x, y) { |
| | 4253 | for(var i=0, len=this.components.length; i<len; i++) { |
| | 4254 | this.components[i].move(x, y); |
| | 4255 | } |
| | 4256 | }, |
| | 4257 | /** |
| | 4258 | * Method: rotate |
| | 4259 | * Rotate a geometry around some origin |
| | 4260 | * |
| | 4261 | * Parameters: |
| | 4262 | * angle - {Float} Rotation angle in degrees (measured counterclockwise |
| | 4263 | * from the positive x-axis) |
| | 4264 | * origin - {<ZOO.Geometry.Point>} Center point for the rotation |
| | 4265 | */ |
| | 4266 | rotate: function(angle, origin) { |
| | 4267 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 4268 | this.components[i].rotate(angle, origin); |
| | 4269 | } |
| | 4270 | }, |
| | 4271 | /** |
| | 4272 | * Method: resize |
| | 4273 | * Resize a geometry relative to some origin. Use this method to apply |
| | 4274 | * a uniform scaling to a geometry. |
| | 4275 | * |
| | 4276 | * Parameters: |
| | 4277 | * scale - {Float} Factor by which to scale the geometry. A scale of 2 |
| | 4278 | * doubles the size of the geometry in each dimension |
| | 4279 | * (lines, for example, will be twice as long, and polygons |
| | 4280 | * will have four times the area). |
| | 4281 | * origin - {<ZOO.Geometry.Point>} Point of origin for resizing |
| | 4282 | * ratio - {Float} Optional x:y ratio for resizing. Default ratio is 1. |
| | 4283 | * |
| | 4284 | * Returns: |
| | 4285 | * {ZOO.Geometry} - The current geometry. |
| | 4286 | */ |
| | 4287 | resize: function(scale, origin, ratio) { |
| | 4288 | for(var i=0; i<this.components.length; ++i) { |
| | 4289 | this.components[i].resize(scale, origin, ratio); |
| | 4290 | } |
| | 4291 | return this; |
| | 4292 | }, |
| | 4293 | distanceTo: function(geometry, options) { |
| | 4294 | var edge = !(options && options.edge === false); |
| | 4295 | var details = edge && options && options.details; |
| | 4296 | var result, best; |
| | 4297 | var min = Number.POSITIVE_INFINITY; |
| | 4298 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 4299 | result = this.components[i].distanceTo(geometry, options); |
| | 4300 | distance = details ? result.distance : result; |
| | 4301 | if(distance < min) { |
| | 4302 | min = distance; |
| | 4303 | best = result; |
| | 4304 | if(min == 0) |
| | 4305 | break; |
| | 4306 | } |
| | 4307 | } |
| | 4308 | return best; |
| | 4309 | }, |
| | 4310 | /** |
| | 4311 | * Method: equals |
| | 4312 | * Determine whether another geometry is equivalent to this one. Geometries |
| | 4313 | * are considered equivalent if all components have the same coordinates. |
| | 4314 | * |
| | 4315 | * Parameters: |
| | 4316 | * geom - {<ZOO.Geometry>} The geometry to test. |
| | 4317 | * |
| | 4318 | * Returns: |
| | 4319 | * {Boolean} The supplied geometry is equivalent to this geometry. |
| | 4320 | */ |
| | 4321 | equals: function(geometry) { |
| | 4322 | var equivalent = true; |
| | 4323 | if(!geometry || !geometry.CLASS_NAME || |
| | 4324 | (this.CLASS_NAME != geometry.CLASS_NAME)) |
| | 4325 | equivalent = false; |
| | 4326 | else if(!(geometry.components instanceof Array) || |
| | 4327 | (geometry.components.length != this.components.length)) |
| | 4328 | equivalent = false; |
| | 4329 | else |
| | 4330 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 4331 | if(!this.components[i].equals(geometry.components[i])) { |
| | 4332 | equivalent = false; |
| | 4333 | break; |
| | 4334 | } |
| | 4335 | } |
| | 4336 | return equivalent; |
| | 4337 | }, |
| | 4338 | /** |
| | 4339 | * Method: transform |
| | 4340 | * Reproject the components geometry from source to dest. |
| | 4341 | * |
| | 4342 | * Parameters: |
| | 4343 | * source - {<ZOO.Projection>} |
| | 4344 | * dest - {<ZOO.Projection>} |
| | 4345 | * |
| | 4346 | * Returns: |
| | 4347 | * {<ZOO.Geometry>} |
| | 4348 | */ |
| | 4349 | transform: function(source, dest) { |
| | 4350 | if (source && dest) { |
| | 4351 | for (var i=0, len=this.components.length; i<len; i++) { |
| | 4352 | var component = this.components[i]; |
| | 4353 | component.transform(source, dest); |
| | 4354 | } |
| | 4355 | this.bounds = null; |
| | 4356 | } |
| | 4357 | return this; |
| | 4358 | }, |
| | 4359 | /** |
| | 4360 | * Method: intersects |
| | 4361 | * Determine if the input geometry intersects this one. |
| | 4362 | * |
| | 4363 | * Parameters: |
| | 4364 | * geometry - {<ZOO.Geometry>} Any type of geometry. |
| | 4365 | * |
| | 4366 | * Returns: |
| | 4367 | * {Boolean} The input geometry intersects this one. |
| | 4368 | */ |
| | 4369 | intersects: function(geometry) { |
| | 4370 | var intersect = false; |
| | 4371 | for(var i=0, len=this.components.length; i<len; ++ i) { |
| | 4372 | intersect = geometry.intersects(this.components[i]); |
| | 4373 | if(intersect) |
| | 4374 | break; |
| | 4375 | } |
| | 4376 | return intersect; |
| | 4377 | }, |
| | 4378 | /** |
| | 4379 | * Method: getVertices |
| | 4380 | * Return a list of all points in this geometry. |
| | 4381 | * |
| | 4382 | * Parameters: |
| | 4383 | * nodes - {Boolean} For lines, only return vertices that are |
| | 4384 | * endpoints. If false, for lines, only vertices that are not |
| | 4385 | * endpoints will be returned. If not provided, all vertices will |
| | 4386 | * be returned. |
| | 4387 | * |
| | 4388 | * Returns: |
| | 4389 | * {Array} A list of all vertices in the geometry. |
| | 4390 | */ |
| | 4391 | getVertices: function(nodes) { |
| | 4392 | var vertices = []; |
| | 4393 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 4394 | Array.prototype.push.apply( |
| | 4395 | vertices, this.components[i].getVertices(nodes) |
| | 4396 | ); |
| | 4397 | } |
| | 4398 | return vertices; |
| | 4399 | }, |
| | 4400 | CLASS_NAME: 'ZOO.Geometry.Collection' |
| | 4401 | }); |
| | 4402 | /** |
| | 4403 | * Class: ZOO.Geometry.Point |
| | 4404 | * Point geometry class. |
| | 4405 | * |
| | 4406 | * Inherits from: |
| | 4407 | * - <ZOO.Geometry> |
| | 4408 | */ |
| | 4409 | ZOO.Geometry.Point = ZOO.Class(ZOO.Geometry, { |
| | 4410 | /** |
| | 4411 | * Property: x |
| | 4412 | * {float} |
| | 4413 | */ |
| | 4414 | x: null, |
| | 4415 | /** |
| | 4416 | * Property: y |
| | 4417 | * {float} |
| | 4418 | */ |
| | 4419 | y: null, |
| | 4420 | /** |
| | 4421 | * Constructor: ZOO.Geometry.Point |
| | 4422 | * Construct a point geometry. |
| | 4423 | * |
| | 4424 | * Parameters: |
| | 4425 | * x - {float} |
| | 4426 | * y - {float} |
| | 4427 | * |
| | 4428 | */ |
| | 4429 | initialize: function(x, y) { |
| | 4430 | ZOO.Geometry.prototype.initialize.apply(this, arguments); |
| | 4431 | this.x = parseFloat(x); |
| | 4432 | this.y = parseFloat(y); |
| | 4433 | }, |
| | 4434 | /** |
| | 4435 | * Method: clone |
| | 4436 | * |
| | 4437 | * Returns: |
| | 4438 | * {<ZOO.Geometry.Point>} An exact clone of this ZOO.Geometry.Point |
| | 4439 | */ |
| | 4440 | clone: function(obj) { |
| | 4441 | if (obj == null) |
| | 4442 | obj = new ZOO.Geometry.Point(this.x, this.y); |
| | 4443 | // catch any randomly tagged-on properties |
| | 4444 | // ZOO.Util.applyDefaults(obj, this); |
| | 4445 | return obj; |
| | 4446 | }, |
| | 4447 | /** |
| | 4448 | * Method: calculateBounds |
| | 4449 | * Create a new Bounds based on the x/y |
| | 4450 | */ |
| | 4451 | calculateBounds: function () { |
| | 4452 | this.bounds = new ZOO.Bounds(this.x, this.y, |
| | 4453 | this.x, this.y); |
| | 4454 | }, |
| | 4455 | distanceTo: function(geometry, options) { |
| | 4456 | var edge = !(options && options.edge === false); |
| | 4457 | var details = edge && options && options.details; |
| | 4458 | var distance, x0, y0, x1, y1, result; |
| | 4459 | if(geometry instanceof ZOO.Geometry.Point) { |
| | 4460 | x0 = this.x; |
| | 4461 | y0 = this.y; |
| | 4462 | x1 = geometry.x; |
| | 4463 | y1 = geometry.y; |
| | 4464 | distance = Math.sqrt(Math.pow(x0 - x1, 2) + Math.pow(y0 - y1, 2)); |
| | 4465 | result = !details ? |
| | 4466 | distance : {x0: x0, y0: y0, x1: x1, y1: y1, distance: distance}; |
| | 4467 | } else { |
| | 4468 | result = geometry.distanceTo(this, options); |
| | 4469 | if(details) { |
| | 4470 | // switch coord order since this geom is target |
| | 4471 | result = { |
| | 4472 | x0: result.x1, y0: result.y1, |
| | 4473 | x1: result.x0, y1: result.y0, |
| | 4474 | distance: result.distance |
| | 4475 | }; |
| | 4476 | } |
| | 4477 | } |
| | 4478 | return result; |
| | 4479 | }, |
| | 4480 | /** |
| | 4481 | * Method: equals |
| | 4482 | * Determine whether another geometry is equivalent to this one. Geometries |
| | 4483 | * are considered equivalent if all components have the same coordinates. |
| | 4484 | * |
| | 4485 | * Parameters: |
| | 4486 | * geom - {<ZOO.Geometry.Point>} The geometry to test. |
| | 4487 | * |
| | 4488 | * Returns: |
| | 4489 | * {Boolean} The supplied geometry is equivalent to this geometry. |
| | 4490 | */ |
| | 4491 | equals: function(geom) { |
| | 4492 | var equals = false; |
| | 4493 | if (geom != null) |
| | 4494 | equals = ((this.x == geom.x && this.y == geom.y) || |
| | 4495 | (isNaN(this.x) && isNaN(this.y) && isNaN(geom.x) && isNaN(geom.y))); |
| | 4496 | return equals; |
| | 4497 | }, |
| | 4498 | /** |
| | 4499 | * Method: toShortString |
| | 4500 | * |
| | 4501 | * Returns: |
| | 4502 | * {String} Shortened String representation of Point object. |
| | 4503 | * (ex. <i>"5, 42"</i>) |
| | 4504 | */ |
| | 4505 | toShortString: function() { |
| | 4506 | return (this.x + ", " + this.y); |
| | 4507 | }, |
| | 4508 | /** |
| | 4509 | * Method: move |
| | 4510 | * Moves a geometry by the given displacement along positive x and y axes. |
| | 4511 | * This modifies the position of the geometry and clears the cached |
| | 4512 | * bounds. |
| | 4513 | * |
| | 4514 | * Parameters: |
| | 4515 | * x - {Float} Distance to move geometry in positive x direction. |
| | 4516 | * y - {Float} Distance to move geometry in positive y direction. |
| | 4517 | */ |
| | 4518 | move: function(x, y) { |
| | 4519 | this.x = this.x + x; |
| | 4520 | this.y = this.y + y; |
| | 4521 | this.clearBounds(); |
| | 4522 | }, |
| | 4523 | /** |
| | 4524 | * Method: rotate |
| | 4525 | * Rotate a point around another. |
| | 4526 | * |
| | 4527 | * Parameters: |
| | 4528 | * angle - {Float} Rotation angle in degrees (measured counterclockwise |
| | 4529 | * from the positive x-axis) |
| | 4530 | * origin - {<ZOO.Geometry.Point>} Center point for the rotation |
| | 4531 | */ |
| | 4532 | rotate: function(angle, origin) { |
| | 4533 | angle *= Math.PI / 180; |
| | 4534 | var radius = this.distanceTo(origin); |
| | 4535 | var theta = angle + Math.atan2(this.y - origin.y, this.x - origin.x); |
| | 4536 | this.x = origin.x + (radius * Math.cos(theta)); |
| | 4537 | this.y = origin.y + (radius * Math.sin(theta)); |
| | 4538 | this.clearBounds(); |
| | 4539 | }, |
| | 4540 | /** |
| | 4541 | * Method: getCentroid |
| | 4542 | * |
| | 4543 | * Returns: |
| | 4544 | * {<ZOO.Geometry.Point>} The centroid of the collection |
| | 4545 | */ |
| | 4546 | getCentroid: function() { |
| | 4547 | return new ZOO.Geometry.Point(this.x, this.y); |
| | 4548 | }, |
| | 4549 | /** |
| | 4550 | * Method: resize |
| | 4551 | * Resize a point relative to some origin. For points, this has the effect |
| | 4552 | * of scaling a vector (from the origin to the point). This method is |
| | 4553 | * more useful on geometry collection subclasses. |
| | 4554 | * |
| | 4555 | * Parameters: |
| | 4556 | * scale - {Float} Ratio of the new distance from the origin to the old |
| | 4557 | * distance from the origin. A scale of 2 doubles the |
| | 4558 | * distance between the point and origin. |
| | 4559 | * origin - {<ZOO.Geometry.Point>} Point of origin for resizing |
| | 4560 | * ratio - {Float} Optional x:y ratio for resizing. Default ratio is 1. |
| | 4561 | * |
| | 4562 | * Returns: |
| | 4563 | * {ZOO.Geometry} - The current geometry. |
| | 4564 | */ |
| | 4565 | resize: function(scale, origin, ratio) { |
| | 4566 | ratio = (ratio == undefined) ? 1 : ratio; |
| | 4567 | this.x = origin.x + (scale * ratio * (this.x - origin.x)); |
| | 4568 | this.y = origin.y + (scale * (this.y - origin.y)); |
| | 4569 | this.clearBounds(); |
| | 4570 | return this; |
| | 4571 | }, |
| | 4572 | /** |
| | 4573 | * Method: intersects |
| | 4574 | * Determine if the input geometry intersects this one. |
| | 4575 | * |
| | 4576 | * Parameters: |
| | 4577 | * geometry - {<ZOO.Geometry>} Any type of geometry. |
| | 4578 | * |
| | 4579 | * Returns: |
| | 4580 | * {Boolean} The input geometry intersects this one. |
| | 4581 | */ |
| | 4582 | intersects: function(geometry) { |
| | 4583 | var intersect = false; |
| | 4584 | if(geometry.CLASS_NAME == "ZOO.Geometry.Point") { |
| | 4585 | intersect = this.equals(geometry); |
| | 4586 | } else { |
| | 4587 | intersect = geometry.intersects(this); |
| | 4588 | } |
| | 4589 | return intersect; |
| | 4590 | }, |
| | 4591 | /** |
| | 4592 | * Method: transform |
| | 4593 | * Translate the x,y properties of the point from source to dest. |
| | 4594 | * |
| | 4595 | * Parameters: |
| | 4596 | * source - {<ZOO.Projection>} |
| | 4597 | * dest - {<ZOO.Projection>} |
| | 4598 | * |
| | 4599 | * Returns: |
| | 4600 | * {<ZOO.Geometry>} |
| | 4601 | */ |
| | 4602 | transform: function(source, dest) { |
| | 4603 | if ((source && dest)) { |
| | 4604 | ZOO.Projection.transform( |
| | 4605 | this, source, dest); |
| | 4606 | this.bounds = null; |
| | 4607 | } |
| | 4608 | return this; |
| | 4609 | }, |
| | 4610 | /** |
| | 4611 | * Method: getVertices |
| | 4612 | * Return a list of all points in this geometry. |
| | 4613 | * |
| | 4614 | * Parameters: |
| | 4615 | * nodes - {Boolean} For lines, only return vertices that are |
| | 4616 | * endpoints. If false, for lines, only vertices that are not |
| | 4617 | * endpoints will be returned. If not provided, all vertices will |
| | 4618 | * be returned. |
| | 4619 | * |
| | 4620 | * Returns: |
| | 4621 | * {Array} A list of all vertices in the geometry. |
| | 4622 | */ |
| | 4623 | getVertices: function(nodes) { |
| | 4624 | return [this]; |
| | 4625 | }, |
| | 4626 | CLASS_NAME: 'ZOO.Geometry.Point' |
| | 4627 | }); |
| | 4628 | /** |
| | 4629 | * Class: ZOO.Geometry.Surface |
| | 4630 | * Surface geometry class. |
| | 4631 | * |
| | 4632 | * Inherits from: |
| | 4633 | * - <ZOO.Geometry> |
| | 4634 | */ |
| | 4635 | ZOO.Geometry.Surface = ZOO.Class(ZOO.Geometry, { |
| | 4636 | initialize: function() { |
| | 4637 | ZOO.Geometry.prototype.initialize.apply(this, arguments); |
| | 4638 | }, |
| | 4639 | CLASS_NAME: "ZOO.Geometry.Surface" |
| | 4640 | }); |
| | 4641 | /** |
| | 4642 | * Class: ZOO.Geometry.MultiPoint |
| | 4643 | * MultiPoint is a collection of Points. Create a new instance with the |
| | 4644 | * <ZOO.Geometry.MultiPoint> constructor. |
| | 4645 | * |
| | 4646 | * Inherits from: |
| | 4647 | * - <ZOO.Geometry.Collection> |
| | 4648 | */ |
| | 4649 | ZOO.Geometry.MultiPoint = ZOO.Class( |
| | 4650 | ZOO.Geometry.Collection, { |
| | 4651 | /** |
| | 4652 | * Property: componentTypes |
| | 4653 | * {Array(String)} An array of class names representing the types of |
| | 4654 | * components that the collection can include. A null value means the |
| | 4655 | * component types are not restricted. |
| | 4656 | */ |
| | 4657 | componentTypes: ["ZOO.Geometry.Point"], |
| | 4658 | /** |
| | 4659 | * Constructor: ZOO.Geometry.MultiPoint |
| | 4660 | * Create a new MultiPoint Geometry |
| | 4661 | * |
| | 4662 | * Parameters: |
| | 4663 | * components - {Array(<ZOO.Geometry.Point>)} |
| | 4664 | * |
| | 4665 | * Returns: |
| | 4666 | * {<ZOO.Geometry.MultiPoint>} |
| | 4667 | */ |
| | 4668 | initialize: function(components) { |
| | 4669 | ZOO.Geometry.Collection.prototype.initialize.apply(this,arguments); |
| | 4670 | }, |
| | 4671 | /** |
| | 4672 | * Method: addPoint |
| | 4673 | * Wrapper for <ZOO.Geometry.Collection.addComponent> |
| | 4674 | * |
| | 4675 | * Parameters: |
| | 4676 | * point - {<ZOO.Geometry.Point>} Point to be added |
| | 4677 | * index - {Integer} Optional index |
| | 4678 | */ |
| | 4679 | addPoint: function(point, index) { |
| | 4680 | this.addComponent(point, index); |
| | 4681 | }, |
| | 4682 | /** |
| | 4683 | * Method: removePoint |
| | 4684 | * Wrapper for <ZOO.Geometry.Collection.removeComponent> |
| | 4685 | * |
| | 4686 | * Parameters: |
| | 4687 | * point - {<ZOO.Geometry.Point>} Point to be removed |
| | 4688 | */ |
| | 4689 | removePoint: function(point){ |
| | 4690 | this.removeComponent(point); |
| | 4691 | }, |
| | 4692 | CLASS_NAME: "ZOO.Geometry.MultiPoint" |
| | 4693 | }); |
| | 4694 | /** |
| | 4695 | * Class: ZOO.Geometry.Curve |
| | 4696 | * A Curve is a MultiPoint, whose points are assumed to be connected. To |
| | 4697 | * this end, we provide a "getLength()" function, which iterates through |
| | 4698 | * the points, summing the distances between them. |
| | 4699 | * |
| | 4700 | * Inherits: |
| | 4701 | * - <ZOO.Geometry.MultiPoint> |
| | 4702 | */ |
| | 4703 | ZOO.Geometry.Curve = ZOO.Class(ZOO.Geometry.MultiPoint, { |
| | 4704 | /** |
| | 4705 | * Property: componentTypes |
| | 4706 | * {Array(String)} An array of class names representing the types of |
| | 4707 | * components that the collection can include. A null |
| | 4708 | * value means the component types are not restricted. |
| | 4709 | */ |
| | 4710 | componentTypes: ["ZOO.Geometry.Point"], |
| | 4711 | /** |
| | 4712 | * Constructor: ZOO.Geometry.Curve |
| | 4713 | * |
| | 4714 | * Parameters: |
| | 4715 | * point - {Array(<ZOO.Geometry.Point>)} |
| | 4716 | */ |
| | 4717 | initialize: function(points) { |
| | 4718 | ZOO.Geometry.MultiPoint.prototype.initialize.apply(this,arguments); |
| | 4719 | }, |
| | 4720 | /** |
| | 4721 | * Method: getLength |
| | 4722 | * |
| | 4723 | * Returns: |
| | 4724 | * {Float} The length of the curve |
| | 4725 | */ |
| | 4726 | getLength: function() { |
| | 4727 | var length = 0.0; |
| | 4728 | if ( this.components && (this.components.length > 1)) { |
| | 4729 | for(var i=1, len=this.components.length; i<len; i++) { |
| | 4730 | length += this.components[i-1].distanceTo(this.components[i]); |
| | 4731 | } |
| | 4732 | } |
| | 4733 | return length; |
| | 4734 | }, |
| | 4735 | /** |
| | 4736 | * APIMethod: getGeodesicLength |
| | 4737 | * Calculate the approximate length of the geometry were it projected onto |
| | 4738 | * the earth. |
| | 4739 | * |
| | 4740 | * projection - {<ZOO.Projection>} The spatial reference system |
| | 4741 | * for the geometry coordinates. If not provided, Geographic/WGS84 is |
| | 4742 | * assumed. |
| | 4743 | * |
| | 4744 | * Returns: |
| | 4745 | * {Float} The appoximate geodesic length of the geometry in meters. |
| | 4746 | */ |
| | 4747 | getGeodesicLength: function(projection) { |
| | 4748 | var geom = this; // so we can work with a clone if needed |
| | 4749 | if(projection) { |
| | 4750 | var gg = new ZOO.Projection("EPSG:4326"); |
| | 4751 | if(!gg.equals(projection)) { |
| | 4752 | geom = this.clone().transform(projection, gg); |
| | 4753 | } |
| | 4754 | } |
| | 4755 | var length = 0.0; |
| | 4756 | if(geom.components && (geom.components.length > 1)) { |
| | 4757 | var p1, p2; |
| | 4758 | for(var i=1, len=geom.components.length; i<len; i++) { |
| | 4759 | p1 = geom.components[i-1]; |
| | 4760 | p2 = geom.components[i]; |
| | 4761 | // this returns km and requires x/y properties |
| | 4762 | length += ZOO.distVincenty(p1,p2); |
| | 4763 | } |
| | 4764 | } |
| | 4765 | // convert to m |
| | 4766 | return length * 1000; |
| | 4767 | }, |
| | 4768 | CLASS_NAME: "ZOO.Geometry.Curve" |
| | 4769 | }); |
| | 4770 | /** |
| | 4771 | * Class: ZOO.Geometry.LineString |
| | 4772 | * A LineString is a Curve which, once two points have been added to it, can |
| | 4773 | * never be less than two points long. |
| | 4774 | * |
| | 4775 | * Inherits from: |
| | 4776 | * - <ZOO.Geometry.Curve> |
| | 4777 | */ |
| | 4778 | ZOO.Geometry.LineString = ZOO.Class(ZOO.Geometry.Curve, { |
| | 4779 | /** |
| | 4780 | * Constructor: ZOO.Geometry.LineString |
| | 4781 | * Create a new LineString geometry |
| | 4782 | * |
| | 4783 | * Parameters: |
| | 4784 | * points - {Array(<ZOO.Geometry.Point>)} An array of points used to |
| | 4785 | * generate the linestring |
| | 4786 | * |
| | 4787 | */ |
| | 4788 | initialize: function(points) { |
| | 4789 | ZOO.Geometry.Curve.prototype.initialize.apply(this, arguments); |
| | 4790 | }, |
| | 4791 | /** |
| | 4792 | * Method: removeComponent |
| | 4793 | * Only allows removal of a point if there are three or more points in |
| | 4794 | * the linestring. (otherwise the result would be just a single point) |
| | 4795 | * |
| | 4796 | * Parameters: |
| | 4797 | * point - {<ZOO.Geometry.Point>} The point to be removed |
| | 4798 | */ |
| | 4799 | removeComponent: function(point) { |
| | 4800 | if ( this.components && (this.components.length > 2)) |
| | 4801 | ZOO.Geometry.Collection.prototype.removeComponent.apply(this,arguments); |
| | 4802 | }, |
| | 4803 | /** |
| | 4804 | * Method: intersects |
| | 4805 | * Test for instersection between two geometries. This is a cheapo |
| | 4806 | * implementation of the Bently-Ottmann algorigithm. It doesn't |
| | 4807 | * really keep track of a sweep line data structure. It is closer |
| | 4808 | * to the brute force method, except that segments are sorted and |
| | 4809 | * potential intersections are only calculated when bounding boxes |
| | 4810 | * intersect. |
| | 4811 | * |
| | 4812 | * Parameters: |
| | 4813 | * geometry - {<ZOO.Geometry>} |
| | 4814 | * |
| | 4815 | * Returns: |
| | 4816 | * {Boolean} The input geometry intersects this geometry. |
| | 4817 | */ |
| | 4818 | intersects: function(geometry) { |
| | 4819 | var intersect = false; |
| | 4820 | var type = geometry.CLASS_NAME; |
| | 4821 | if(type == "ZOO.Geometry.LineString" || |
| | 4822 | type == "ZOO.Geometry.LinearRing" || |
| | 4823 | type == "ZOO.Geometry.Point") { |
| | 4824 | var segs1 = this.getSortedSegments(); |
| | 4825 | var segs2; |
| | 4826 | if(type == "ZOO.Geometry.Point") |
| | 4827 | segs2 = [{ |
| | 4828 | x1: geometry.x, y1: geometry.y, |
| | 4829 | x2: geometry.x, y2: geometry.y |
| | 4830 | }]; |
| | 4831 | else |
| | 4832 | segs2 = geometry.getSortedSegments(); |
| | 4833 | var seg1, seg1x1, seg1x2, seg1y1, seg1y2, |
| | 4834 | seg2, seg2y1, seg2y2; |
| | 4835 | // sweep right |
| | 4836 | outer: for(var i=0, len=segs1.length; i<len; ++i) { |
| | 4837 | seg1 = segs1[i]; |
| | 4838 | seg1x1 = seg1.x1; |
| | 4839 | seg1x2 = seg1.x2; |
| | 4840 | seg1y1 = seg1.y1; |
| | 4841 | seg1y2 = seg1.y2; |
| | 4842 | inner: for(var j=0, jlen=segs2.length; j<jlen; ++j) { |
| | 4843 | seg2 = segs2[j]; |
| | 4844 | if(seg2.x1 > seg1x2) |
| | 4845 | break; |
| | 4846 | if(seg2.x2 < seg1x1) |
| | 4847 | continue; |
| | 4848 | seg2y1 = seg2.y1; |
| | 4849 | seg2y2 = seg2.y2; |
| | 4850 | if(Math.min(seg2y1, seg2y2) > Math.max(seg1y1, seg1y2)) |
| | 4851 | continue; |
| | 4852 | if(Math.max(seg2y1, seg2y2) < Math.min(seg1y1, seg1y2)) |
| | 4853 | continue; |
| | 4854 | if(ZOO.Geometry.segmentsIntersect(seg1, seg2)) { |
| | 4855 | intersect = true; |
| | 4856 | break outer; |
| | 4857 | } |
| | 4858 | } |
| | 4859 | } |
| | 4860 | } else { |
| | 4861 | intersect = geometry.intersects(this); |
| | 4862 | } |
| | 4863 | return intersect; |
| | 4864 | }, |
| | 4865 | /** |
| | 4866 | * Method: getSortedSegments |
| | 4867 | * |
| | 4868 | * Returns: |
| | 4869 | * {Array} An array of segment objects. Segment objects have properties |
| | 4870 | * x1, y1, x2, and y2. The start point is represented by x1 and y1. |
| | 4871 | * The end point is represented by x2 and y2. Start and end are |
| | 4872 | * ordered so that x1 < x2. |
| | 4873 | */ |
| | 4874 | getSortedSegments: function() { |
| | 4875 | var numSeg = this.components.length - 1; |
| | 4876 | var segments = new Array(numSeg); |
| | 4877 | for(var i=0; i<numSeg; ++i) { |
| | 4878 | point1 = this.components[i]; |
| | 4879 | point2 = this.components[i + 1]; |
| | 4880 | if(point1.x < point2.x) |
| | 4881 | segments[i] = { |
| | 4882 | x1: point1.x, |
| | 4883 | y1: point1.y, |
| | 4884 | x2: point2.x, |
| | 4885 | y2: point2.y |
| | 4886 | }; |
| | 4887 | else |
| | 4888 | segments[i] = { |
| | 4889 | x1: point2.x, |
| | 4890 | y1: point2.y, |
| | 4891 | x2: point1.x, |
| | 4892 | y2: point1.y |
| | 4893 | }; |
| | 4894 | } |
| | 4895 | // more efficient to define this somewhere static |
| | 4896 | function byX1(seg1, seg2) { |
| | 4897 | return seg1.x1 - seg2.x1; |
| | 4898 | } |
| | 4899 | return segments.sort(byX1); |
| | 4900 | }, |
| | 4901 | /** |
| | 4902 | * Method: splitWithSegment |
| | 4903 | * Split this geometry with the given segment. |
| | 4904 | * |
| | 4905 | * Parameters: |
| | 4906 | * seg - {Object} An object with x1, y1, x2, and y2 properties referencing |
| | 4907 | * segment endpoint coordinates. |
| | 4908 | * options - {Object} Properties of this object will be used to determine |
| | 4909 | * how the split is conducted. |
| | 4910 | * |
| | 4911 | * Valid options: |
| | 4912 | * edge - {Boolean} Allow splitting when only edges intersect. Default is |
| | 4913 | * true. If false, a vertex on the source segment must be within the |
| | 4914 | * tolerance distance of the intersection to be considered a split. |
| | 4915 | * tolerance - {Number} If a non-null value is provided, intersections |
| | 4916 | * within the tolerance distance of one of the source segment's |
| | 4917 | * endpoints will be assumed to occur at the endpoint. |
| | 4918 | * |
| | 4919 | * Returns: |
| | 4920 | * {Object} An object with *lines* and *points* properties. If the given |
| | 4921 | * segment intersects this linestring, the lines array will reference |
| | 4922 | * geometries that result from the split. The points array will contain |
| | 4923 | * all intersection points. Intersection points are sorted along the |
| | 4924 | * segment (in order from x1,y1 to x2,y2). |
| | 4925 | */ |
| | 4926 | splitWithSegment: function(seg, options) { |
| | 4927 | var edge = !(options && options.edge === false); |
| | 4928 | var tolerance = options && options.tolerance; |
| | 4929 | var lines = []; |
| | 4930 | var verts = this.getVertices(); |
| | 4931 | var points = []; |
| | 4932 | var intersections = []; |
| | 4933 | var split = false; |
| | 4934 | var vert1, vert2, point; |
| | 4935 | var node, vertex, target; |
| | 4936 | var interOptions = {point: true, tolerance: tolerance}; |
| | 4937 | var result = null; |
| | 4938 | for(var i=0, stop=verts.length-2; i<=stop; ++i) { |
| | 4939 | vert1 = verts[i]; |
| | 4940 | points.push(vert1.clone()); |
| | 4941 | vert2 = verts[i+1]; |
| | 4942 | target = {x1: vert1.x, y1: vert1.y, x2: vert2.x, y2: vert2.y}; |
| | 4943 | point = ZOO.Geometry.segmentsIntersect(seg, target, interOptions); |
| | 4944 | if(point instanceof ZOO.Geometry.Point) { |
| | 4945 | if((point.x === seg.x1 && point.y === seg.y1) || |
| | 4946 | (point.x === seg.x2 && point.y === seg.y2) || |
| | 4947 | point.equals(vert1) || point.equals(vert2)) |
| | 4948 | vertex = true; |
| | 4949 | else |
| | 4950 | vertex = false; |
| | 4951 | if(vertex || edge) { |
| | 4952 | // push intersections different than the previous |
| | 4953 | if(!point.equals(intersections[intersections.length-1])) |
| | 4954 | intersections.push(point.clone()); |
| | 4955 | if(i === 0) { |
| | 4956 | if(point.equals(vert1)) |
| | 4957 | continue; |
| | 4958 | } |
| | 4959 | if(point.equals(vert2)) |
| | 4960 | continue; |
| | 4961 | split = true; |
| | 4962 | if(!point.equals(vert1)) |
| | 4963 | points.push(point); |
| | 4964 | lines.push(new ZOO.Geometry.LineString(points)); |
| | 4965 | points = [point.clone()]; |
| | 4966 | } |
| | 4967 | } |
| | 4968 | } |
| | 4969 | if(split) { |
| | 4970 | points.push(vert2.clone()); |
| | 4971 | lines.push(new ZOO.Geometry.LineString(points)); |
| | 4972 | } |
| | 4973 | if(intersections.length > 0) { |
| | 4974 | // sort intersections along segment |
| | 4975 | var xDir = seg.x1 < seg.x2 ? 1 : -1; |
| | 4976 | var yDir = seg.y1 < seg.y2 ? 1 : -1; |
| | 4977 | result = { |
| | 4978 | lines: lines, |
| | 4979 | points: intersections.sort(function(p1, p2) { |
| | 4980 | return (xDir * p1.x - xDir * p2.x) || (yDir * p1.y - yDir * p2.y); |
| | 4981 | }) |
| | 4982 | }; |
| | 4983 | } |
| | 4984 | return result; |
| | 4985 | }, |
| | 4986 | /** |
| | 4987 | * Method: split |
| | 4988 | * Use this geometry (the source) to attempt to split a target geometry. |
| | 4989 | * |
| | 4990 | * Parameters: |
| | 4991 | * target - {<ZOO.Geometry>} The target geometry. |
| | 4992 | * options - {Object} Properties of this object will be used to determine |
| | 4993 | * how the split is conducted. |
| | 4994 | * |
| | 4995 | * Valid options: |
| | 4996 | * mutual - {Boolean} Split the source geometry in addition to the target |
| | 4997 | * geometry. Default is false. |
| | 4998 | * edge - {Boolean} Allow splitting when only edges intersect. Default is |
| | 4999 | * true. If false, a vertex on the source must be within the tolerance |
| | 5000 | * distance of the intersection to be considered a split. |
| | 5001 | * tolerance - {Number} If a non-null value is provided, intersections |
| | 5002 | * within the tolerance distance of an existing vertex on the source |
| | 5003 | * will be assumed to occur at the vertex. |
| | 5004 | * |
| | 5005 | * Returns: |
| | 5006 | * {Array} A list of geometries (of this same type as the target) that |
| | 5007 | * result from splitting the target with the source geometry. The |
| | 5008 | * source and target geometry will remain unmodified. If no split |
| | 5009 | * results, null will be returned. If mutual is true and a split |
| | 5010 | * results, return will be an array of two arrays - the first will be |
| | 5011 | * all geometries that result from splitting the source geometry and |
| | 5012 | * the second will be all geometries that result from splitting the |
| | 5013 | * target geometry. |
| | 5014 | */ |
| | 5015 | split: function(target, options) { |
| | 5016 | var results = null; |
| | 5017 | var mutual = options && options.mutual; |
| | 5018 | var sourceSplit, targetSplit, sourceParts, targetParts; |
| | 5019 | if(target instanceof ZOO.Geometry.LineString) { |
| | 5020 | var verts = this.getVertices(); |
| | 5021 | var vert1, vert2, seg, splits, lines, point; |
| | 5022 | var points = []; |
| | 5023 | sourceParts = []; |
| | 5024 | for(var i=0, stop=verts.length-2; i<=stop; ++i) { |
| | 5025 | vert1 = verts[i]; |
| | 5026 | vert2 = verts[i+1]; |
| | 5027 | seg = { |
| | 5028 | x1: vert1.x, y1: vert1.y, |
| | 5029 | x2: vert2.x, y2: vert2.y |
| | 5030 | }; |
| | 5031 | targetParts = targetParts || [target]; |
| | 5032 | if(mutual) |
| | 5033 | points.push(vert1.clone()); |
| | 5034 | for(var j=0; j<targetParts.length; ++j) { |
| | 5035 | splits = targetParts[j].splitWithSegment(seg, options); |
| | 5036 | if(splits) { |
| | 5037 | // splice in new features |
| | 5038 | lines = splits.lines; |
| | 5039 | if(lines.length > 0) { |
| | 5040 | lines.unshift(j, 1); |
| | 5041 | Array.prototype.splice.apply(targetParts, lines); |
| | 5042 | j += lines.length - 2; |
| | 5043 | } |
| | 5044 | if(mutual) { |
| | 5045 | for(var k=0, len=splits.points.length; k<len; ++k) { |
| | 5046 | point = splits.points[k]; |
| | 5047 | if(!point.equals(vert1)) { |
| | 5048 | points.push(point); |
| | 5049 | sourceParts.push(new ZOO.Geometry.LineString(points)); |
| | 5050 | if(point.equals(vert2)) |
| | 5051 | points = []; |
| | 5052 | else |
| | 5053 | points = [point.clone()]; |
| | 5054 | } |
| | 5055 | } |
| | 5056 | } |
| | 5057 | } |
| | 5058 | } |
| | 5059 | } |
| | 5060 | if(mutual && sourceParts.length > 0 && points.length > 0) { |
| | 5061 | points.push(vert2.clone()); |
| | 5062 | sourceParts.push(new ZOO.Geometry.LineString(points)); |
| | 5063 | } |
| | 5064 | } else { |
| | 5065 | results = target.splitWith(this, options); |
| | 5066 | } |
| | 5067 | if(targetParts && targetParts.length > 1) |
| | 5068 | targetSplit = true; |
| | 5069 | else |
| | 5070 | targetParts = []; |
| | 5071 | if(sourceParts && sourceParts.length > 1) |
| | 5072 | sourceSplit = true; |
| | 5073 | else |
| | 5074 | sourceParts = []; |
| | 5075 | if(targetSplit || sourceSplit) { |
| | 5076 | if(mutual) |
| | 5077 | results = [sourceParts, targetParts]; |
| | 5078 | else |
| | 5079 | results = targetParts; |
| | 5080 | } |
| | 5081 | return results; |
| | 5082 | }, |
| | 5083 | /** |
| | 5084 | * Method: splitWith |
| | 5085 | * Split this geometry (the target) with the given geometry (the source). |
| | 5086 | * |
| | 5087 | * Parameters: |
| | 5088 | * geometry - {<ZOO.Geometry>} A geometry used to split this |
| | 5089 | * geometry (the source). |
| | 5090 | * options - {Object} Properties of this object will be used to determine |
| | 5091 | * how the split is conducted. |
| | 5092 | * |
| | 5093 | * Valid options: |
| | 5094 | * mutual - {Boolean} Split the source geometry in addition to the target |
| | 5095 | * geometry. Default is false. |
| | 5096 | * edge - {Boolean} Allow splitting when only edges intersect. Default is |
| | 5097 | * true. If false, a vertex on the source must be within the tolerance |
| | 5098 | * distance of the intersection to be considered a split. |
| | 5099 | * tolerance - {Number} If a non-null value is provided, intersections |
| | 5100 | * within the tolerance distance of an existing vertex on the source |
| | 5101 | * will be assumed to occur at the vertex. |
| | 5102 | * |
| | 5103 | * Returns: |
| | 5104 | * {Array} A list of geometries (of this same type as the target) that |
| | 5105 | * result from splitting the target with the source geometry. The |
| | 5106 | * source and target geometry will remain unmodified. If no split |
| | 5107 | * results, null will be returned. If mutual is true and a split |
| | 5108 | * results, return will be an array of two arrays - the first will be |
| | 5109 | * all geometries that result from splitting the source geometry and |
| | 5110 | * the second will be all geometries that result from splitting the |
| | 5111 | * target geometry. |
| | 5112 | */ |
| | 5113 | splitWith: function(geometry, options) { |
| | 5114 | return geometry.split(this, options); |
| | 5115 | }, |
| | 5116 | /** |
| | 5117 | * Method: getVertices |
| | 5118 | * Return a list of all points in this geometry. |
| | 5119 | * |
| | 5120 | * Parameters: |
| | 5121 | * nodes - {Boolean} For lines, only return vertices that are |
| | 5122 | * endpoints. If false, for lines, only vertices that are not |
| | 5123 | * endpoints will be returned. If not provided, all vertices will |
| | 5124 | * be returned. |
| | 5125 | * |
| | 5126 | * Returns: |
| | 5127 | * {Array} A list of all vertices in the geometry. |
| | 5128 | */ |
| | 5129 | getVertices: function(nodes) { |
| | 5130 | var vertices; |
| | 5131 | if(nodes === true) |
| | 5132 | vertices = [ |
| | 5133 | this.components[0], |
| | 5134 | this.components[this.components.length-1] |
| | 5135 | ]; |
| | 5136 | else if (nodes === false) |
| | 5137 | vertices = this.components.slice(1, this.components.length-1); |
| | 5138 | else |
| | 5139 | vertices = this.components.slice(); |
| | 5140 | return vertices; |
| | 5141 | }, |
| | 5142 | distanceTo: function(geometry, options) { |
| | 5143 | var edge = !(options && options.edge === false); |
| | 5144 | var details = edge && options && options.details; |
| | 5145 | var result, best = {}; |
| | 5146 | var min = Number.POSITIVE_INFINITY; |
| | 5147 | if(geometry instanceof ZOO.Geometry.Point) { |
| | 5148 | var segs = this.getSortedSegments(); |
| | 5149 | var x = geometry.x; |
| | 5150 | var y = geometry.y; |
| | 5151 | var seg; |
| | 5152 | for(var i=0, len=segs.length; i<len; ++i) { |
| | 5153 | seg = segs[i]; |
| | 5154 | result = ZOO.Geometry.distanceToSegment(geometry, seg); |
| | 5155 | if(result.distance < min) { |
| | 5156 | min = result.distance; |
| | 5157 | best = result; |
| | 5158 | if(min === 0) |
| | 5159 | break; |
| | 5160 | } else { |
| | 5161 | // if distance increases and we cross y0 to the right of x0, no need to keep looking. |
| | 5162 | if(seg.x2 > x && ((y > seg.y1 && y < seg.y2) || (y < seg.y1 && y > seg.y2))) |
| | 5163 | break; |
| | 5164 | } |
| | 5165 | } |
| | 5166 | if(details) |
| | 5167 | best = { |
| | 5168 | distance: best.distance, |
| | 5169 | x0: best.x, y0: best.y, |
| | 5170 | x1: x, y1: y |
| | 5171 | }; |
| | 5172 | else |
| | 5173 | best = best.distance; |
| | 5174 | } else if(geometry instanceof ZOO.Geometry.LineString) { |
| | 5175 | var segs0 = this.getSortedSegments(); |
| | 5176 | var segs1 = geometry.getSortedSegments(); |
| | 5177 | var seg0, seg1, intersection, x0, y0; |
| | 5178 | var len1 = segs1.length; |
| | 5179 | var interOptions = {point: true}; |
| | 5180 | outer: for(var i=0, len=segs0.length; i<len; ++i) { |
| | 5181 | seg0 = segs0[i]; |
| | 5182 | x0 = seg0.x1; |
| | 5183 | y0 = seg0.y1; |
| | 5184 | for(var j=0; j<len1; ++j) { |
| | 5185 | seg1 = segs1[j]; |
| | 5186 | intersection = ZOO.Geometry.segmentsIntersect(seg0, seg1, interOptions); |
| | 5187 | if(intersection) { |
| | 5188 | min = 0; |
| | 5189 | best = { |
| | 5190 | distance: 0, |
| | 5191 | x0: intersection.x, y0: intersection.y, |
| | 5192 | x1: intersection.x, y1: intersection.y |
| | 5193 | }; |
| | 5194 | break outer; |
| | 5195 | } else { |
| | 5196 | result = ZOO.Geometry.distanceToSegment({x: x0, y: y0}, seg1); |
| | 5197 | if(result.distance < min) { |
| | 5198 | min = result.distance; |
| | 5199 | best = { |
| | 5200 | distance: min, |
| | 5201 | x0: x0, y0: y0, |
| | 5202 | x1: result.x, y1: result.y |
| | 5203 | }; |
| | 5204 | } |
| | 5205 | } |
| | 5206 | } |
| | 5207 | } |
| | 5208 | if(!details) |
| | 5209 | best = best.distance; |
| | 5210 | if(min !== 0) { |
| | 5211 | // check the final vertex in this line's sorted segments |
| | 5212 | if(seg0) { |
| | 5213 | result = geometry.distanceTo( |
| | 5214 | new ZOO.Geometry.Point(seg0.x2, seg0.y2), |
| | 5215 | options |
| | 5216 | ); |
| | 5217 | var dist = details ? result.distance : result; |
| | 5218 | if(dist < min) { |
| | 5219 | if(details) |
| | 5220 | best = { |
| | 5221 | distance: min, |
| | 5222 | x0: result.x1, y0: result.y1, |
| | 5223 | x1: result.x0, y1: result.y0 |
| | 5224 | }; |
| | 5225 | else |
| | 5226 | best = dist; |
| | 5227 | } |
| | 5228 | } |
| | 5229 | } |
| | 5230 | } else { |
| | 5231 | best = geometry.distanceTo(this, options); |
| | 5232 | // swap since target comes from this line |
| | 5233 | if(details) |
| | 5234 | best = { |
| | 5235 | distance: best.distance, |
| | 5236 | x0: best.x1, y0: best.y1, |
| | 5237 | x1: best.x0, y1: best.y0 |
| | 5238 | }; |
| | 5239 | } |
| | 5240 | return best; |
| | 5241 | }, |
| | 5242 | CLASS_NAME: "ZOO.Geometry.LineString" |
| | 5243 | }); |
| | 5244 | /** |
| | 5245 | * Class: ZOO.Geometry.LinearRing |
| | 5246 | * |
| | 5247 | * A Linear Ring is a special LineString which is closed. It closes itself |
| | 5248 | * automatically on every addPoint/removePoint by adding a copy of the first |
| | 5249 | * point as the last point. |
| | 5250 | * |
| | 5251 | * Also, as it is the first in the line family to close itself, a getArea() |
| | 5252 | * function is defined to calculate the enclosed area of the linearRing |
| | 5253 | * |
| | 5254 | * Inherits: |
| | 5255 | * - <OpenLayers.Geometry.LineString> |
| | 5256 | */ |
| | 5257 | ZOO.Geometry.LinearRing = ZOO.Class( |
| | 5258 | ZOO.Geometry.LineString, { |
| | 5259 | /** |
| | 5260 | * Property: componentTypes |
| | 5261 | * {Array(String)} An array of class names representing the types of |
| | 5262 | * components that the collection can include. A null |
| | 5263 | * value means the component types are not restricted. |
| | 5264 | */ |
| | 5265 | componentTypes: ["ZOO.Geometry.Point"], |
| | 5266 | /** |
| | 5267 | * Constructor: OpenLayers.Geometry.LinearRing |
| | 5268 | * Linear rings are constructed with an array of points. This array |
| | 5269 | * can represent a closed or open ring. If the ring is open (the last |
| | 5270 | * point does not equal the first point), the constructor will close |
| | 5271 | * the ring. If the ring is already closed (the last point does equal |
| | 5272 | * the first point), it will be left closed. |
| | 5273 | * |
| | 5274 | * Parameters: |
| | 5275 | * points - {Array(<ZOO.Geometry.Point>)} points |
| | 5276 | */ |
| | 5277 | initialize: function(points) { |
| | 5278 | ZOO.Geometry.LineString.prototype.initialize.apply(this,arguments); |
| | 5279 | }, |
| | 5280 | /** |
| | 5281 | * Method: addComponent |
| | 5282 | * Adds a point to geometry components. If the point is to be added to |
| | 5283 | * the end of the components array and it is the same as the last point |
| | 5284 | * already in that array, the duplicate point is not added. This has |
| | 5285 | * the effect of closing the ring if it is not already closed, and |
| | 5286 | * doing the right thing if it is already closed. This behavior can |
| | 5287 | * be overridden by calling the method with a non-null index as the |
| | 5288 | * second argument. |
| | 5289 | * |
| | 5290 | * Parameter: |
| | 5291 | * point - {<ZOO.Geometry.Point>} |
| | 5292 | * index - {Integer} Index into the array to insert the component |
| | 5293 | * |
| | 5294 | * Returns: |
| | 5295 | * {Boolean} Was the Point successfully added? |
| | 5296 | */ |
| | 5297 | addComponent: function(point, index) { |
| | 5298 | var added = false; |
| | 5299 | //remove last point |
| | 5300 | var lastPoint = this.components.pop(); |
| | 5301 | // given an index, add the point |
| | 5302 | // without an index only add non-duplicate points |
| | 5303 | if(index != null || !point.equals(lastPoint)) |
| | 5304 | added = ZOO.Geometry.Collection.prototype.addComponent.apply(this,arguments); |
| | 5305 | //append copy of first point |
| | 5306 | var firstPoint = this.components[0]; |
| | 5307 | ZOO.Geometry.Collection.prototype.addComponent.apply(this,[firstPoint]); |
| | 5308 | return added; |
| | 5309 | }, |
| | 5310 | /** |
| | 5311 | * APIMethod: removeComponent |
| | 5312 | * Removes a point from geometry components. |
| | 5313 | * |
| | 5314 | * Parameters: |
| | 5315 | * point - {<ZOO.Geometry.Point>} |
| | 5316 | */ |
| | 5317 | removeComponent: function(point) { |
| | 5318 | if (this.components.length > 4) { |
| | 5319 | //remove last point |
| | 5320 | this.components.pop(); |
| | 5321 | //remove our point |
| | 5322 | ZOO.Geometry.Collection.prototype.removeComponent.apply(this,arguments); |
| | 5323 | //append copy of first point |
| | 5324 | var firstPoint = this.components[0]; |
| | 5325 | ZOO.Geometry.Collection.prototype.addComponent.apply(this,[firstPoint]); |
| | 5326 | } |
| | 5327 | }, |
| | 5328 | /** |
| | 5329 | * Method: move |
| | 5330 | * Moves a geometry by the given displacement along positive x and y axes. |
| | 5331 | * This modifies the position of the geometry and clears the cached |
| | 5332 | * bounds. |
| | 5333 | * |
| | 5334 | * Parameters: |
| | 5335 | * x - {Float} Distance to move geometry in positive x direction. |
| | 5336 | * y - {Float} Distance to move geometry in positive y direction. |
| | 5337 | */ |
| | 5338 | move: function(x, y) { |
| | 5339 | for(var i = 0, len=this.components.length; i<len - 1; i++) { |
| | 5340 | this.components[i].move(x, y); |
| | 5341 | } |
| | 5342 | }, |
| | 5343 | /** |
| | 5344 | * Method: rotate |
| | 5345 | * Rotate a geometry around some origin |
| | 5346 | * |
| | 5347 | * Parameters: |
| | 5348 | * angle - {Float} Rotation angle in degrees (measured counterclockwise |
| | 5349 | * from the positive x-axis) |
| | 5350 | * origin - {<ZOO.Geometry.Point>} Center point for the rotation |
| | 5351 | */ |
| | 5352 | rotate: function(angle, origin) { |
| | 5353 | for(var i=0, len=this.components.length; i<len - 1; ++i) { |
| | 5354 | this.components[i].rotate(angle, origin); |
| | 5355 | } |
| | 5356 | }, |
| | 5357 | /** |
| | 5358 | * Method: resize |
| | 5359 | * Resize a geometry relative to some origin. Use this method to apply |
| | 5360 | * a uniform scaling to a geometry. |
| | 5361 | * |
| | 5362 | * Parameters: |
| | 5363 | * scale - {Float} Factor by which to scale the geometry. A scale of 2 |
| | 5364 | * doubles the size of the geometry in each dimension |
| | 5365 | * (lines, for example, will be twice as long, and polygons |
| | 5366 | * will have four times the area). |
| | 5367 | * origin - {<ZOO.Geometry.Point>} Point of origin for resizing |
| | 5368 | * ratio - {Float} Optional x:y ratio for resizing. Default ratio is 1. |
| | 5369 | * |
| | 5370 | * Returns: |
| | 5371 | * {ZOO.Geometry} - The current geometry. |
| | 5372 | */ |
| | 5373 | resize: function(scale, origin, ratio) { |
| | 5374 | for(var i=0, len=this.components.length; i<len - 1; ++i) { |
| | 5375 | this.components[i].resize(scale, origin, ratio); |
| | 5376 | } |
| | 5377 | return this; |
| | 5378 | }, |
| | 5379 | /** |
| | 5380 | * Method: transform |
| | 5381 | * Reproject the components geometry from source to dest. |
| | 5382 | * |
| | 5383 | * Parameters: |
| | 5384 | * source - {<ZOO.Projection>} |
| | 5385 | * dest - {<ZOO.Projection>} |
| | 5386 | * |
| | 5387 | * Returns: |
| | 5388 | * {<ZOO.Geometry>} |
| | 5389 | */ |
| | 5390 | transform: function(source, dest) { |
| | 5391 | if (source && dest) { |
| | 5392 | for (var i=0, len=this.components.length; i<len - 1; i++) { |
| | 5393 | var component = this.components[i]; |
| | 5394 | component.transform(source, dest); |
| | 5395 | } |
| | 5396 | this.bounds = null; |
| | 5397 | } |
| | 5398 | return this; |
| | 5399 | }, |
| | 5400 | /** |
| | 5401 | * Method: getCentroid |
| | 5402 | * |
| | 5403 | * Returns: |
| | 5404 | * {<ZOO.Geometry.Point>} The centroid of the ring |
| | 5405 | */ |
| | 5406 | getCentroid: function() { |
| | 5407 | if ( this.components && (this.components.length > 2)) { |
| | 5408 | var sumX = 0.0; |
| | 5409 | var sumY = 0.0; |
| | 5410 | for (var i = 0; i < this.components.length - 1; i++) { |
| | 5411 | var b = this.components[i]; |
| | 5412 | var c = this.components[i+1]; |
| | 5413 | sumX += (b.x + c.x) * (b.x * c.y - c.x * b.y); |
| | 5414 | sumY += (b.y + c.y) * (b.x * c.y - c.x * b.y); |
| | 5415 | } |
| | 5416 | var area = -1 * this.getArea(); |
| | 5417 | var x = sumX / (6 * area); |
| | 5418 | var y = sumY / (6 * area); |
| | 5419 | } |
| | 5420 | return new ZOO.Geometry.Point(x, y); |
| | 5421 | }, |
| | 5422 | /** |
| | 5423 | * Method: getArea |
| | 5424 | * Note - The area is positive if the ring is oriented CW, otherwise |
| | 5425 | * it will be negative. |
| | 5426 | * |
| | 5427 | * Returns: |
| | 5428 | * {Float} The signed area for a ring. |
| | 5429 | */ |
| | 5430 | getArea: function() { |
| | 5431 | var area = 0.0; |
| | 5432 | if ( this.components && (this.components.length > 2)) { |
| | 5433 | var sum = 0.0; |
| | 5434 | for (var i=0, len=this.components.length; i<len - 1; i++) { |
| | 5435 | var b = this.components[i]; |
| | 5436 | var c = this.components[i+1]; |
| | 5437 | sum += (b.x + c.x) * (c.y - b.y); |
| | 5438 | } |
| | 5439 | area = - sum / 2.0; |
| | 5440 | } |
| | 5441 | return area; |
| | 5442 | }, |
| | 5443 | /** |
| | 5444 | * Method: getGeodesicArea |
| | 5445 | * Calculate the approximate area of the polygon were it projected onto |
| | 5446 | * the earth. Note that this area will be positive if ring is oriented |
| | 5447 | * clockwise, otherwise it will be negative. |
| | 5448 | * |
| | 5449 | * Parameters: |
| | 5450 | * projection - {<ZOO.Projection>} The spatial reference system |
| | 5451 | * for the geometry coordinates. If not provided, Geographic/WGS84 is |
| | 5452 | * assumed. |
| | 5453 | * |
| | 5454 | * Reference: |
| | 5455 | * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for |
| | 5456 | * Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion |
| | 5457 | * Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409 |
| | 5458 | * |
| | 5459 | * Returns: |
| | 5460 | * {float} The approximate signed geodesic area of the polygon in square |
| | 5461 | * meters. |
| | 5462 | */ |
| | 5463 | getGeodesicArea: function(projection) { |
| | 5464 | var ring = this; // so we can work with a clone if needed |
| | 5465 | if(projection) { |
| | 5466 | var gg = new ZOO.Projection("EPSG:4326"); |
| | 5467 | if(!gg.equals(projection)) { |
| | 5468 | ring = this.clone().transform(projection, gg); |
| | 5469 | } |
| | 5470 | } |
| | 5471 | var area = 0.0; |
| | 5472 | var len = ring.components && ring.components.length; |
| | 5473 | if(len > 2) { |
| | 5474 | var p1, p2; |
| | 5475 | for(var i=0; i<len-1; i++) { |
| | 5476 | p1 = ring.components[i]; |
| | 5477 | p2 = ring.components[i+1]; |
| | 5478 | area += ZOO.rad(p2.x - p1.x) * |
| | 5479 | (2 + Math.sin(ZOO.rad(p1.y)) + |
| | 5480 | Math.sin(ZOO.rad(p2.y))); |
| | 5481 | } |
| | 5482 | area = area * 6378137.0 * 6378137.0 / 2.0; |
| | 5483 | } |
| | 5484 | return area; |
| | 5485 | }, |
| | 5486 | /** |
| | 5487 | * Method: containsPoint |
| | 5488 | * Test if a point is inside a linear ring. For the case where a point |
| | 5489 | * is coincident with a linear ring edge, returns 1. Otherwise, |
| | 5490 | * returns boolean. |
| | 5491 | * |
| | 5492 | * Parameters: |
| | 5493 | * point - {<ZOO.Geometry.Point>} |
| | 5494 | * |
| | 5495 | * Returns: |
| | 5496 | * {Boolean | Number} The point is inside the linear ring. Returns 1 if |
| | 5497 | * the point is coincident with an edge. Returns boolean otherwise. |
| | 5498 | */ |
| | 5499 | containsPoint: function(point) { |
| | 5500 | var approx = OpenLayers.Number.limitSigDigs; |
| | 5501 | var digs = 14; |
| | 5502 | var px = approx(point.x, digs); |
| | 5503 | var py = approx(point.y, digs); |
| | 5504 | function getX(y, x1, y1, x2, y2) { |
| | 5505 | return (((x1 - x2) * y) + ((x2 * y1) - (x1 * y2))) / (y1 - y2); |
| | 5506 | } |
| | 5507 | var numSeg = this.components.length - 1; |
| | 5508 | var start, end, x1, y1, x2, y2, cx, cy; |
| | 5509 | var crosses = 0; |
| | 5510 | for(var i=0; i<numSeg; ++i) { |
| | 5511 | start = this.components[i]; |
| | 5512 | x1 = approx(start.x, digs); |
| | 5513 | y1 = approx(start.y, digs); |
| | 5514 | end = this.components[i + 1]; |
| | 5515 | x2 = approx(end.x, digs); |
| | 5516 | y2 = approx(end.y, digs); |
| | 5517 | |
| | 5518 | /** |
| | 5519 | * The following conditions enforce five edge-crossing rules: |
| | 5520 | * 1. points coincident with edges are considered contained; |
| | 5521 | * 2. an upward edge includes its starting endpoint, and |
| | 5522 | * excludes its final endpoint; |
| | 5523 | * 3. a downward edge excludes its starting endpoint, and |
| | 5524 | * includes its final endpoint; |
| | 5525 | * 4. horizontal edges are excluded; and |
| | 5526 | * 5. the edge-ray intersection point must be strictly right |
| | 5527 | * of the point P. |
| | 5528 | */ |
| | 5529 | if(y1 == y2) { |
| | 5530 | // horizontal edge |
| | 5531 | if(py == y1) { |
| | 5532 | // point on horizontal line |
| | 5533 | if(x1 <= x2 && (px >= x1 && px <= x2) || // right or vert |
| | 5534 | x1 >= x2 && (px <= x1 && px >= x2)) { // left or vert |
| | 5535 | // point on edge |
| | 5536 | crosses = -1; |
| | 5537 | break; |
| | 5538 | } |
| | 5539 | } |
| | 5540 | // ignore other horizontal edges |
| | 5541 | continue; |
| | 5542 | } |
| | 5543 | cx = approx(getX(py, x1, y1, x2, y2), digs); |
| | 5544 | if(cx == px) { |
| | 5545 | // point on line |
| | 5546 | if(y1 < y2 && (py >= y1 && py <= y2) || // upward |
| | 5547 | y1 > y2 && (py <= y1 && py >= y2)) { // downward |
| | 5548 | // point on edge |
| | 5549 | crosses = -1; |
| | 5550 | break; |
| | 5551 | } |
| | 5552 | } |
| | 5553 | if(cx <= px) { |
| | 5554 | // no crossing to the right |
| | 5555 | continue; |
| | 5556 | } |
| | 5557 | if(x1 != x2 && (cx < Math.min(x1, x2) || cx > Math.max(x1, x2))) { |
| | 5558 | // no crossing |
| | 5559 | continue; |
| | 5560 | } |
| | 5561 | if(y1 < y2 && (py >= y1 && py < y2) || // upward |
| | 5562 | y1 > y2 && (py < y1 && py >= y2)) { // downward |
| | 5563 | ++crosses; |
| | 5564 | } |
| | 5565 | } |
| | 5566 | var contained = (crosses == -1) ? |
| | 5567 | // on edge |
| | 5568 | 1 : |
| | 5569 | // even (out) or odd (in) |
| | 5570 | !!(crosses & 1); |
| | 5571 | |
| | 5572 | return contained; |
| | 5573 | }, |
| | 5574 | intersects: function(geometry) { |
| | 5575 | var intersect = false; |
| | 5576 | if(geometry.CLASS_NAME == "ZOO.Geometry.Point") |
| | 5577 | intersect = this.containsPoint(geometry); |
| | 5578 | else if(geometry.CLASS_NAME == "ZOO.Geometry.LineString") |
| | 5579 | intersect = geometry.intersects(this); |
| | 5580 | else if(geometry.CLASS_NAME == "ZOO.Geometry.LinearRing") |
| | 5581 | intersect = ZOO.Geometry.LineString.prototype.intersects.apply( |
| | 5582 | this, [geometry] |
| | 5583 | ); |
| | 5584 | else |
| | 5585 | for(var i=0, len=geometry.components.length; i<len; ++ i) { |
| | 5586 | intersect = geometry.components[i].intersects(this); |
| | 5587 | if(intersect) |
| | 5588 | break; |
| | 5589 | } |
| | 5590 | return intersect; |
| | 5591 | }, |
| | 5592 | getVertices: function(nodes) { |
| | 5593 | return (nodes === true) ? [] : this.components.slice(0, this.components.length-1); |
| | 5594 | }, |
| | 5595 | CLASS_NAME: "ZOO.Geometry.LinearRing" |
| | 5596 | }); |
| | 5597 | /** |
| | 5598 | * Class: ZOO.Geometry.MultiLineString |
| | 5599 | * A MultiLineString is a geometry with multiple <ZOO.Geometry.LineString> |
| | 5600 | * components. |
| | 5601 | * |
| | 5602 | * Inherits from: |
| | 5603 | * - <ZOO.Geometry.Collection> |
| | 5604 | */ |
| | 5605 | ZOO.Geometry.MultiLineString = ZOO.Class( |
| | 5606 | ZOO.Geometry.Collection, { |
| | 5607 | componentTypes: ["ZOO.Geometry.LineString"], |
| | 5608 | /** |
| | 5609 | * Constructor: ZOO.Geometry.MultiLineString |
| | 5610 | * Constructor for a MultiLineString Geometry. |
| | 5611 | * |
| | 5612 | * Parameters: |
| | 5613 | * components - {Array(<ZOO.Geometry.LineString>)} |
| | 5614 | * |
| | 5615 | */ |
| | 5616 | initialize: function(components) { |
| | 5617 | ZOO.Geometry.Collection.prototype.initialize.apply(this,arguments); |
| | 5618 | }, |
| | 5619 | split: function(geometry, options) { |
| | 5620 | var results = null; |
| | 5621 | var mutual = options && options.mutual; |
| | 5622 | var splits, sourceLine, sourceLines, sourceSplit, targetSplit; |
| | 5623 | var sourceParts = []; |
| | 5624 | var targetParts = [geometry]; |
| | 5625 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 5626 | sourceLine = this.components[i]; |
| | 5627 | sourceSplit = false; |
| | 5628 | for(var j=0; j < targetParts.length; ++j) { |
| | 5629 | splits = sourceLine.split(targetParts[j], options); |
| | 5630 | if(splits) { |
| | 5631 | if(mutual) { |
| | 5632 | sourceLines = splits[0]; |
| | 5633 | for(var k=0, klen=sourceLines.length; k<klen; ++k) { |
| | 5634 | if(k===0 && sourceParts.length) |
| | 5635 | sourceParts[sourceParts.length-1].addComponent( |
| | 5636 | sourceLines[k] |
| | 5637 | ); |
| | 5638 | else |
| | 5639 | sourceParts.push( |
| | 5640 | new ZOO.Geometry.MultiLineString([ |
| | 5641 | sourceLines[k] |
| | 5642 | ]) |
| | 5643 | ); |
| | 5644 | } |
| | 5645 | sourceSplit = true; |
| | 5646 | splits = splits[1]; |
| | 5647 | } |
| | 5648 | if(splits.length) { |
| | 5649 | // splice in new target parts |
| | 5650 | splits.unshift(j, 1); |
| | 5651 | Array.prototype.splice.apply(targetParts, splits); |
| | 5652 | break; |
| | 5653 | } |
| | 5654 | } |
| | 5655 | } |
| | 5656 | if(!sourceSplit) { |
| | 5657 | // source line was not hit |
| | 5658 | if(sourceParts.length) { |
| | 5659 | // add line to existing multi |
| | 5660 | sourceParts[sourceParts.length-1].addComponent( |
| | 5661 | sourceLine.clone() |
| | 5662 | ); |
| | 5663 | } else { |
| | 5664 | // create a fresh multi |
| | 5665 | sourceParts = [ |
| | 5666 | new ZOO.Geometry.MultiLineString( |
| | 5667 | sourceLine.clone() |
| | 5668 | ) |
| | 5669 | ]; |
| | 5670 | } |
| | 5671 | } |
| | 5672 | } |
| | 5673 | if(sourceParts && sourceParts.length > 1) |
| | 5674 | sourceSplit = true; |
| | 5675 | else |
| | 5676 | sourceParts = []; |
| | 5677 | if(targetParts && targetParts.length > 1) |
| | 5678 | targetSplit = true; |
| | 5679 | else |
| | 5680 | targetParts = []; |
| | 5681 | if(sourceSplit || targetSplit) { |
| | 5682 | if(mutual) |
| | 5683 | results = [sourceParts, targetParts]; |
| | 5684 | else |
| | 5685 | results = targetParts; |
| | 5686 | } |
| | 5687 | return results; |
| | 5688 | }, |
| | 5689 | splitWith: function(geometry, options) { |
| | 5690 | var results = null; |
| | 5691 | var mutual = options && options.mutual; |
| | 5692 | var splits, targetLine, sourceLines, sourceSplit, targetSplit, sourceParts, targetParts; |
| | 5693 | if(geometry instanceof ZOO.Geometry.LineString) { |
| | 5694 | targetParts = []; |
| | 5695 | sourceParts = [geometry]; |
| | 5696 | for(var i=0, len=this.components.length; i<len; ++i) { |
| | 5697 | targetSplit = false; |
| | 5698 | targetLine = this.components[i]; |
| | 5699 | for(var j=0; j<sourceParts.length; ++j) { |
| | 5700 | splits = sourceParts[j].split(targetLine, options); |
| | 5701 | if(splits) { |
| | 5702 | if(mutual) { |
| | 5703 | sourceLines = splits[0]; |
| | 5704 | if(sourceLines.length) { |
| | 5705 | // splice in new source parts |
| | 5706 | sourceLines.unshift(j, 1); |
| | 5707 | Array.prototype.splice.apply(sourceParts, sourceLines); |
| | 5708 | j += sourceLines.length - 2; |
| | 5709 | } |
| | 5710 | splits = splits[1]; |
| | 5711 | if(splits.length === 0) { |
| | 5712 | splits = [targetLine.clone()]; |
| | 5713 | } |
| | 5714 | } |
| | 5715 | for(var k=0, klen=splits.length; k<klen; ++k) { |
| | 5716 | if(k===0 && targetParts.length) { |
| | 5717 | targetParts[targetParts.length-1].addComponent( |
| | 5718 | splits[k] |
| | 5719 | ); |
| | 5720 | } else { |
| | 5721 | targetParts.push( |
| | 5722 | new ZOO.Geometry.MultiLineString([ |
| | 5723 | splits[k] |
| | 5724 | ]) |
| | 5725 | ); |
| | 5726 | } |
| | 5727 | } |
| | 5728 | targetSplit = true; |
| | 5729 | } |
| | 5730 | } |
| | 5731 | if(!targetSplit) { |
| | 5732 | // target component was not hit |
| | 5733 | if(targetParts.length) { |
| | 5734 | // add it to any existing multi-line |
| | 5735 | targetParts[targetParts.length-1].addComponent( |
| | 5736 | targetLine.clone() |
| | 5737 | ); |
| | 5738 | } else { |
| | 5739 | // or start with a fresh multi-line |
| | 5740 | targetParts = [ |
| | 5741 | new ZOO.Geometry.MultiLineString([ |
| | 5742 | targetLine.clone() |
| | 5743 | ]) |
| | 5744 | ]; |
| | 5745 | } |
| | 5746 | |
| | 5747 | } |
| | 5748 | } |
| | 5749 | } else { |
| | 5750 | results = geometry.split(this); |
| | 5751 | } |
| | 5752 | if(sourceParts && sourceParts.length > 1) |
| | 5753 | sourceSplit = true; |
| | 5754 | else |
| | 5755 | sourceParts = []; |
| | 5756 | if(targetParts && targetParts.length > 1) |
| | 5757 | targetSplit = true; |
| | 5758 | else |
| | 5759 | targetParts = []; |
| | 5760 | if(sourceSplit || targetSplit) { |
| | 5761 | if(mutual) |
| | 5762 | results = [sourceParts, targetParts]; |
| | 5763 | else |
| | 5764 | results = targetParts; |
| | 5765 | } |
| | 5766 | return results; |
| | 5767 | }, |
| | 5768 | CLASS_NAME: "ZOO.Geometry.MultiLineString" |
| | 5769 | }); |
| | 5770 | /** |
| | 5771 | * Class: ZOO.Geometry.Polygon |
| | 5772 | * Polygon is a collection of <ZOO.Geometry.LinearRing>. |
| | 5773 | * |
| | 5774 | * Inherits from: |
| | 5775 | * - <ZOO.Geometry.Collection> |
| | 5776 | */ |
| | 5777 | ZOO.Geometry.Polygon = ZOO.Class( |
| | 5778 | ZOO.Geometry.Collection, { |
| | 5779 | componentTypes: ["ZOO.Geometry.LinearRing"], |
| | 5780 | /** |
| | 5781 | * Constructor: OpenLayers.Geometry.Polygon |
| | 5782 | * Constructor for a Polygon geometry. |
| | 5783 | * The first ring (this.component[0])is the outer bounds of the polygon and |
| | 5784 | * all subsequent rings (this.component[1-n]) are internal holes. |
| | 5785 | * |
| | 5786 | * |
| | 5787 | * Parameters: |
| | 5788 | * components - {Array(<ZOO.Geometry.LinearRing>)} |
| | 5789 | */ |
| | 5790 | initialize: function(components) { |
| | 5791 | ZOO.Geometry.Collection.prototype.initialize.apply(this,arguments); |
| | 5792 | }, |
| | 5793 | /** |
| | 5794 | * Method: getArea |
| | 5795 | * Calculated by subtracting the areas of the internal holes from the |
| | 5796 | * area of the outer hole. |
| | 5797 | * |
| | 5798 | * Returns: |
| | 5799 | * {float} The area of the geometry |
| | 5800 | */ |
| | 5801 | getArea: function() { |
| | 5802 | var area = 0.0; |
| | 5803 | if ( this.components && (this.components.length > 0)) { |
| | 5804 | area += Math.abs(this.components[0].getArea()); |
| | 5805 | for (var i=1, len=this.components.length; i<len; i++) { |
| | 5806 | area -= Math.abs(this.components[i].getArea()); |
| | 5807 | } |
| | 5808 | } |
| | 5809 | return area; |
| | 5810 | }, |
| | 5811 | /** |
| | 5812 | * APIMethod: getGeodesicArea |
| | 5813 | * Calculate the approximate area of the polygon were it projected onto |
| | 5814 | * the earth. |
| | 5815 | * |
| | 5816 | * Parameters: |
| | 5817 | * projection - {<ZOO.Projection>} The spatial reference system |
| | 5818 | * for the geometry coordinates. If not provided, Geographic/WGS84 is |
| | 5819 | * assumed. |
| | 5820 | * |
| | 5821 | * Reference: |
| | 5822 | * Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for |
| | 5823 | * Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion |
| | 5824 | * Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409 |
| | 5825 | * |
| | 5826 | * Returns: |
| | 5827 | * {float} The approximate geodesic area of the polygon in square meters. |
| | 5828 | */ |
| | 5829 | getGeodesicArea: function(projection) { |
| | 5830 | var area = 0.0; |
| | 5831 | if(this.components && (this.components.length > 0)) { |
| | 5832 | area += Math.abs(this.components[0].getGeodesicArea(projection)); |
| | 5833 | for(var i=1, len=this.components.length; i<len; i++) { |
| | 5834 | area -= Math.abs(this.components[i].getGeodesicArea(projection)); |
| | 5835 | } |
| | 5836 | } |
| | 5837 | return area; |
| | 5838 | }, |
| | 5839 | /** |
| | 5840 | * Method: containsPoint |
| | 5841 | * Test if a point is inside a polygon. Points on a polygon edge are |
| | 5842 | * considered inside. |
| | 5843 | * |
| | 5844 | * Parameters: |
| | 5845 | * point - {<ZOO.Geometry.Point>} |
| | 5846 | * |
| | 5847 | * Returns: |
| | 5848 | * {Boolean | Number} The point is inside the polygon. Returns 1 if the |
| | 5849 | * point is on an edge. Returns boolean otherwise. |
| | 5850 | */ |
| | 5851 | containsPoint: function(point) { |
| | 5852 | var numRings = this.components.length; |
| | 5853 | var contained = false; |
| | 5854 | if(numRings > 0) { |
| | 5855 | // check exterior ring - 1 means on edge, boolean otherwise |
| | 5856 | contained = this.components[0].containsPoint(point); |
| | 5857 | if(contained !== 1) { |
| | 5858 | if(contained && numRings > 1) { |
| | 5859 | // check interior rings |
| | 5860 | var hole; |
| | 5861 | for(var i=1; i<numRings; ++i) { |
| | 5862 | hole = this.components[i].containsPoint(point); |
| | 5863 | if(hole) { |
| | 5864 | if(hole === 1) |
| | 5865 | contained = 1; |
| | 5866 | else |
| | 5867 | contained = false; |
| | 5868 | break; |
| | 5869 | } |
| | 5870 | } |
| | 5871 | } |
| | 5872 | } |
| | 5873 | } |
| | 5874 | return contained; |
| | 5875 | }, |
| | 5876 | intersects: function(geometry) { |
| | 5877 | var intersect = false; |
| | 5878 | var i, len; |
| | 5879 | if(geometry.CLASS_NAME == "ZOO.Geometry.Point") { |
| | 5880 | intersect = this.containsPoint(geometry); |
| | 5881 | } else if(geometry.CLASS_NAME == "ZOO.Geometry.LineString" || |
| | 5882 | geometry.CLASS_NAME == "ZOO.Geometry.LinearRing") { |
| | 5883 | // check if rings/linestrings intersect |
| | 5884 | |