#805 - all geometries now know how to rotate - see the examples/rotate-features.html for geometry.rotate in action

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3602 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Geometry/Collection.js

@@ -245,6 +245,21 @@ OpenLayers.Geometry.Collection.prototype =
         }
     },
 
+    /**
+     * APIMethod: rotate
+     * Rotate a geometry around some origin
+     *
+     * Parameters:
+     * angle - {Float} Rotation angle in radians (measured counterclockwise
+     *                 from the positive x-axis)
+     * origin - {OpenLayers.Geometry.Point} Center point for the rotation
+     */
+    rotate: function(angle, origin) {
+        for(var i=0; i<this.components.length; ++i) {
+            this.components[i].rotate(angle, origin);
+        }
+    },
+
     /**
      * APIMethod: equals
      * Tests for equivalent geometries