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Make tile range calculation work with arbitrary origins

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This commit is contained in:
Andreas Hocevar
2015-06-18 09:48:32 +02:00
parent a753d282cc
commit 31cfa0d952
1 changed files with 4 additions and 9 deletions
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13
src/ol/tilegrid/tilegrid.js
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@@ -492,15 +492,10 @@ ol.tilegrid.TileGrid.prototype.getZForResolution = function(resolution) {
* @private
*/
ol.tilegrid.TileGrid.prototype.calculateTileRanges_ = function(extent) {
var extentWidth = ol.extent.getWidth(extent);
var extentHeight = ol.extent.getHeight(extent);
var fullTileRanges = new Array(this.resolutions_.length);
var tileSize;
for (var z = 0, zz = fullTileRanges.length; z < zz; ++z) {
tileSize = ol.size.toSize(this.getTileSize(z), this.tmpSize_);
fullTileRanges[z] = new ol.TileRange(
0, Math.ceil(extentWidth / tileSize[0] / this.resolutions_[z]) - 1,
0, Math.ceil(extentHeight / tileSize[1] / this.resolutions_[z]) - 1);
var length = this.resolutions_.length;
var fullTileRanges = new Array(length);
for (var z = this.minZoom; z < length; ++z) {
fullTileRanges[z] = this.getTileRangeForExtentAndZ(extent, z);
}
this.fullTileRanges_ = fullTileRanges;
};