| 426 | |
| 427 | class CRS { |
| 428 | constructor(epsgCode, WKT, extent) { |
| 429 | this.epsgCode = epsgCode; |
| 430 | this.extent = extent; |
| 431 | if (Array.isArray(WKT)) { |
| 432 | this.extent = WKT; |
| 433 | WKT = null; |
| 434 | } |
| 435 | if(this.extent[0] === -180 && this.extent[2] === 180 && this.extent[3] === 90) { |
| 436 | this.extent[1] = Math.max(this.extent[1], -90); |
| 437 | } |
| 438 | this.WKT = WKT || CRS.defaultWKTs[epsgCode]; |
| 439 | if (this.WKT) { |
| 440 | proj4.defs(epsgCode, this.WKT); |
| 441 | } |
| 442 | const defs = proj4.defs(epsgCode); |
| 443 | if (!defs) { |
| 444 | throw new Error(`${epsgCode} was not defined,make sure the WKT param was not null`); |
| 445 | } |
| 446 | this.unit = defs.units || 'degree'; |
| 447 | CRS.set(this); |
| 448 | } |
| 449 | |
| 450 | getExtent() { |
| 451 | if (!this._rectifyExtent) { |