Add reprojection support on Geometry classes. Geometries can now be transformed

in place by using .transform(source, dest). r=elemoine (Closes #1037) 


git-svn-id: http://svn.openlayers.org/trunk/openlayers@5515 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Geometry/Collection.js

@@ -306,6 +306,27 @@ OpenLayers.Geometry.Collection = OpenLayers.Class(OpenLayers.Geometry, {
         return equivalent;
     },
 
+    /**
+     * APIMethod: transform
+     * Reproject the components geometry from source to dest.
+     * 
+     * Parameters:
+     * source - {<OpenLayers.Projection>} 
+     * dest - {<OpenLayers.Projection>}
+     * 
+     * Returns:
+     * {<OpenLayers.Geometry>} 
+     */
+    transform: function(source, dest) {
+        if (source && dest) {
+            for (var i = 0; i < this.components.length; i++) {  
+                var component = this.components[i];
+                component.transform(source, dest);
+            }
+        }   
+        return this;
+    },
+
     /**
      * APIMethod: intersects
      * Determine if the input geometry intersects this one.

lib/OpenLayers/Geometry/LinearRing.js

@@ -152,6 +152,27 @@ OpenLayers.Geometry.LinearRing = OpenLayers.Class(
             this.components[i].resize(scale, origin, ratio);
         }
     },
+    
+    /**
+     * APIMethod: transform
+     * Reproject the components geometry from source to dest.
+     *
+     * Parameters:
+     * source - {<OpenLayers.Projection>}
+     * dest - {<OpenLayers.Projection>}
+     * 
+     * Returns:
+     * {<OpenLayers.Geometry>} 
+     */
+    transform: function(source, dest) {
+        if (source && dest) {
+            for (var i = 0; i < this.components.length - 1; i++) {
+                var component = this.components[i];
+                component.transform(source, dest);
+            }
+        }
+        return this;
+    },
 
     /**
      * APIMethod: getArea

lib/OpenLayers/Geometry/Point.js

@@ -188,6 +188,25 @@ OpenLayers.Geometry.Point = OpenLayers.Class(OpenLayers.Geometry, {
         }
         return intersect;
     },
+    
+    /**
+     * APIMethod: transform
+     * Translate the x,y properties of the point from source to dest.
+     * 
+     * Parameters:
+     * source - {<OpenLayers.Projection>} 
+     * dest - {<OpenLayers.Projection>}
+     * 
+     * Returns:
+     * {<OpenLayers.Geometry>} 
+     */
+    transform: function(source, dest) {
+        if ((source && dest)) {
+            OpenLayers.Projection.transform(
+                this, source, dest); 
+        }       
+        return this;
+    },
 
     CLASS_NAME: "OpenLayers.Geometry.Point"
 });