Remove 'drawn' property from Tiles. (Closes #1018)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4557 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Grid.js

@@ -548,18 +548,6 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
                 break;
             }
         };
-        if (this.buffer == 0) {
-            for (var r=0, rl=this.grid.length; r<rl; r++) {
-                var row = this.grid[r];
-                for (var c=0, cl=row.length; c<cl; c++) {
-                    var tile = row[c];
-                    if (!tile.drawn && 
-                         tile.bounds.intersectsBounds(bounds, false)) {
-                        tile.draw();
-                    }
-                }
-            }
-        }
     },
 
     /**

lib/OpenLayers/Tile.js

@@ -72,12 +72,6 @@ OpenLayers.Tile = OpenLayers.Class({
      */    
     position: null,
 
-    /** 
-     * Property: drawn 
-     * {Boolean} false
-     */
-    drawn: false,
-
     /**
      * Property: isLoading
      * {Boolean} Is the tile loading?
@@ -144,20 +138,9 @@ OpenLayers.Tile = OpenLayers.Class({
         var withinMaxExtent = (maxExtent &&
                                this.bounds.intersectsBounds(maxExtent, false));
  
-        var mapExtent = this.layer.map.getExtent();
-        var withinMapExtent = (mapExtent &&
-                               this.bounds.intersectsBounds(mapExtent, false));
-         
-        // There are two cases where we *wouldn't* want to draw the tile:
-        //  
-        // 1) If the tile is outside its layer's maxExtent
-        // 2) When the layer's buffer is 0, if the tile is outside the map's 
-        //    extent (out of view)
-        //
-        // ...what we return is the opposite of the above conditions :-)
-        //
-        return ( (withinMaxExtent || this.layer.displayOutsideMaxExtent) &&
-                 (withinMapExtent || (this.layer.buffer != 0)) );
+        // The only case where we *wouldn't* want to draw the tile is if the 
+        // tile is outside its layer's maxExtent.
+        return (withinMaxExtent || this.layer.displayOutsideMaxExtent);
     },
     
     /** 
@@ -175,7 +158,6 @@ OpenLayers.Tile = OpenLayers.Class({
             redraw = true;
         }
 
-        this.drawn = false;
         this.bounds = bounds.clone();
         this.position = position.clone();
         if (redraw) {

lib/OpenLayers/Tile/Image.js

@@ -123,7 +123,6 @@ OpenLayers.Tile.Image = OpenLayers.Class(OpenLayers.Tile, {
             OpenLayers.Util.modifyDOMElement(this.imgDiv,
                     null, null, imageSize) ;
         }
-        this.drawn = true;
         return true;
     },