Tim's big refactoring of the Geometry modules. Fixes #590. All tests pass in FF (except the PanZoomBar stuff, which wasn't touched by this patch) and IE.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@2931 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Geometry/Curve.js

@@ -15,6 +15,14 @@ OpenLayers.Geometry.Curve = OpenLayers.Class.create();
 OpenLayers.Geometry.Curve.prototype = 
   OpenLayers.Class.inherit(OpenLayers.Geometry.MultiPoint, {
 
+    /**
+     * An array of class names representing the types of components that
+     * the collection can include.  A null value means the component types
+     * are not restricted.
+     * @type Array(String)
+     */
+    componentTypes: ["OpenLayers.Geometry.Point"],
+
     /**
      * @constructor
      *
@@ -25,20 +33,6 @@ OpenLayers.Geometry.Curve.prototype =
                                                                   arguments);
     },
     
-    /**
-     * @returns An exact clone of this OpenLayers.Feature
-     * @type OpenLayers.Feature
-     */
-    clone: function (obj) {
-        if (obj == null) {
-            obj = new OpenLayers.Geometry.Curve();
-        }
-        
-        obj = OpenLayers.Geometry.Collection.prototype.clone.apply(this, 
-                                                                   [obj]);
-        return obj;
-    },
-    
     /**
      * @returns The length of the curve
      * @type float