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Enable ol.Extent re-use

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This commit is contained in:
Tom Payne
2013-04-09 16:48:32 +02:00
parent e08d19ac55
commit ee8e565be2
1 changed files with 13 additions and 7 deletions
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src/ol/tilegrid/tilegrid.js
+13 -7
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@@ -97,12 +97,13 @@ ol.tilegrid.TileGrid = function(options) {
* @param {function(this: T, number, ol.TileRange): boolean} callback Callback. * @param {function(this: T, number, ol.TileRange): boolean} callback Callback.
* @param {T=} opt_obj Object. * @param {T=} opt_obj Object.
* @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object. * @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object.
* @param {ol.Extent=} opt_extent Temporary ol.Extent object.
* @return {boolean} Callback succeeded. * @return {boolean} Callback succeeded.
* @template T * @template T
*/ */
ol.tilegrid.TileGrid.prototype.forEachTileCoordParentTileRange = ol.tilegrid.TileGrid.prototype.forEachTileCoordParentTileRange =
function(tileCoord, callback, opt_obj, opt_tileRange) { function(tileCoord, callback, opt_obj, opt_tileRange, opt_extent) {
var tileCoordExtent = this.getTileCoordExtent(tileCoord); var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);
var z = tileCoord.z - 1; var z = tileCoord.z - 1;
while (z >= 0) { while (z >= 0) {
if (callback.call(opt_obj, z, if (callback.call(opt_obj, z,
@@ -170,12 +171,13 @@ ol.tilegrid.TileGrid.prototype.getResolutions = function() {
/** /**
* @param {ol.TileCoord} tileCoord Tile coordinate. * @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object. * @param {ol.TileRange=} opt_tileRange Temporary ol.TileRange object.
* @param {ol.Extent=} opt_extent Temporary ol.Extent object.
* @return {ol.TileRange} Tile range. * @return {ol.TileRange} Tile range.
*/ */
ol.tilegrid.TileGrid.prototype.getTileCoordChildTileRange = ol.tilegrid.TileGrid.prototype.getTileCoordChildTileRange =
function(tileCoord, opt_tileRange) { function(tileCoord, opt_tileRange, opt_extent) {
if (tileCoord.z < this.resolutions_.length) { if (tileCoord.z < this.resolutions_.length) {
var tileCoordExtent = this.getTileCoordExtent(tileCoord); var tileCoordExtent = this.getTileCoordExtent(tileCoord, opt_extent);
return this.getTileRangeForExtentAndZ( return this.getTileRangeForExtentAndZ(
tileCoordExtent, tileCoord.z + 1, opt_tileRange); tileCoordExtent, tileCoord.z + 1, opt_tileRange);
} else { } else {
@@ -187,9 +189,11 @@ ol.tilegrid.TileGrid.prototype.getTileCoordChildTileRange =
/** /**
* @param {number} z Z. * @param {number} z Z.
* @param {ol.TileRange} tileRange Tile range. * @param {ol.TileRange} tileRange Tile range.
* @param {ol.Extent=} opt_extent Temporary ol.Extent object.
* @return {ol.Extent} Extent. * @return {ol.Extent} Extent.
*/ */
ol.tilegrid.TileGrid.prototype.getTileRangeExtent = function(z, tileRange) { ol.tilegrid.TileGrid.prototype.getTileRangeExtent =
function(z, tileRange, opt_extent) {
var origin = this.getOrigin(z); var origin = this.getOrigin(z);
var resolution = this.getResolution(z); var resolution = this.getResolution(z);
var tileSize = this.getTileSize(z); var tileSize = this.getTileSize(z);
@@ -251,9 +255,11 @@ ol.tilegrid.TileGrid.prototype.getTileCoordCenter = function(tileCoord) {
/** /**
* @param {ol.TileCoord} tileCoord Tile coordinate. * @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {ol.Extent=} opt_extent Temporary extent object.
* @return {ol.Extent} Extent. * @return {ol.Extent} Extent.
*/ */
ol.tilegrid.TileGrid.prototype.getTileCoordExtent = function(tileCoord) { ol.tilegrid.TileGrid.prototype.getTileCoordExtent =
function(tileCoord, opt_extent) {
var origin = this.getOrigin(tileCoord.z); var origin = this.getOrigin(tileCoord.z);
var resolution = this.getResolution(tileCoord.z); var resolution = this.getResolution(tileCoord.z);
var tileSize = this.getTileSize(tileCoord.z); var tileSize = this.getTileSize(tileCoord.z);
@@ -261,7 +267,7 @@ ol.tilegrid.TileGrid.prototype.getTileCoordExtent = function(tileCoord) {
var minY = origin[1] + tileCoord.y * tileSize.height * resolution; var minY = origin[1] + tileCoord.y * tileSize.height * resolution;
var maxX = minX + tileSize.width * resolution; var maxX = minX + tileSize.width * resolution;
var maxY = minY + tileSize.height * resolution; var maxY = minY + tileSize.height * resolution;
return new ol.Extent(minX, minY, maxX, maxY); return ol.Extent.createOrUpdate(minX, minY, maxX, maxY, opt_extent);
}; };