[OpenLayers-Commits] r4743 - sandbox/pagameba/transition/lib/OpenLayers

[commits at openlayers.org]

Author: pagameba
Date: 2007-10-01 17:08:14 -0400 (Mon, 01 Oct 2007)
New Revision: 4743

Modified:
   sandbox/pagameba/transition/lib/OpenLayers/Tile.js
Log:
destroy backBufferTiles if necessary.  Also, avoid a potential problem with end transitions if the tile has already been destroyed.

Modified: sandbox/pagameba/transition/lib/OpenLayers/Tile.js
===================================================================
--- sandbox/pagameba/transition/lib/OpenLayers/Tile.js	2007-10-01 21:00:18 UTC (rev 4742)
+++ sandbox/pagameba/transition/lib/OpenLayers/Tile.js	2007-10-01 21:08:14 UTC (rev 4743)
@@ -116,6 +116,10 @@
         
         this.events.destroy();
         this.events = null;
+        
+        if (this.backBufferTile) {
+            this.backBufferTile.destroy();
+        }
     },
     
      
@@ -272,12 +276,14 @@
      * current position/bounds and hide it for the next transition
      */
     endTransition: function() {
-        this.backBufferTile.position = this.position.clone();
-        this.backBufferTile.bounds = this.bounds.clone();
-        this.backBufferTile.size = this.size.clone();
-        this.backBufferTile.resolution = this.layer.getResolution();
-        this.backBufferTile.renderTile();
-        this.backBufferTile.clear();
+        if (this.position) {
+            this.backBufferTile.position = this.position.clone();
+            this.backBufferTile.bounds = this.bounds.clone();
+            this.backBufferTile.size = this.size.clone();
+            this.backBufferTile.resolution = this.layer.getResolution();
+            this.backBufferTile.renderTile();
+            this.backBufferTile.clear();            
+        }
     },
     
     CLASS_NAME: "OpenLayers.Tile"