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Eliminate an ol.TileCoord allocation

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This commit is contained in:
Tom Payne
2013-04-09 19:54:15 +02:00
parent fe03ebe99c
commit 680b31c5e0
1 changed files with 11 additions and 3 deletions
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14
src/ol/tilegrid/tilegrid.js
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@@ -92,6 +92,13 @@ ol.tilegrid.TileGrid = function(options) {
};
/**
* @private
* @type {ol.TileCoord}
*/
ol.tilegrid.TileGrid.tmpTileCoord_ = new ol.TileCoord(0, 0, 0);
/**
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {function(this: T, number, ol.TileRange): boolean} callback Callback.
@@ -213,11 +220,12 @@ ol.tilegrid.TileGrid.prototype.getTileRangeExtent =
*/
ol.tilegrid.TileGrid.prototype.getTileRangeForExtentAndResolution =
function(extent, resolution, opt_tileRange) {
var tileCoord = this.getTileCoordForXYAndResolution_(
extent.minX, extent.minY, resolution, false);
var tileCoord = ol.tilegrid.TileGrid.tmpTileCoord_;
this.getTileCoordForXYAndResolution_(
extent.minX, extent.minY, resolution, false, tileCoord);
var minX = tileCoord.x;
var minY = tileCoord.y;
tileCoord = this.getTileCoordForXYAndResolution_(
this.getTileCoordForXYAndResolution_(
extent.maxX, extent.maxY, resolution, true, tileCoord);
return ol.TileRange.createOrUpdate(
minX, minY, tileCoord.x, tileCoord.y, opt_tileRange);