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Add EMPTY tile state instead of using null for empty tiles

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This commit is contained in:
Tom Payne
2013-03-08 14:41:14 +01:00
parent 0a13344668
commit b729f969a7
9 changed files with 37 additions and 42 deletions
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6
src/ol/source/debugtilesource.js
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@@ -19,9 +19,7 @@ goog.require('ol.tilegrid.TileGrid');
*/
ol.DebugTile_ = function(tileCoord, tileGrid) {
goog.base(this, tileCoord);
this.state = ol.TileState.LOADED;
goog.base(this, tileCoord, ol.TileState.LOADED);
/**
* @private
@@ -127,7 +125,7 @@ ol.source.DebugTileSource.prototype.expireCache = function(usedTiles) {
ol.source.DebugTileSource.prototype.getTile = function(tileCoord) {
var key = tileCoord.toString();
if (this.tileCache_.containsKey(key)) {
return /** @type {ol.DebugTile_} */ (this.tileCache_.get(key));
return /** @type {!ol.DebugTile_} */ (this.tileCache_.get(key));
} else {
var tile = new ol.DebugTile_(tileCoord, this.tileGrid);
this.tileCache_.set(key, tile);