making a stab at updating Shapes

--HG--
branch : box2d-update

src/modules/physics/box2d/CircleShape.h

@@ -41,15 +41,6 @@ namespace box2d
 	**/
 	class CircleShape : public Shape
 	{
-	private:
-
-		// The radius of the circle. We need to store this because
-		// Box2D has no built-in method for getting the radius.
-		float radius;
-
-		// Local offset.
-		b2Vec2 localPosition;
-
 	public:
 		
 		/**
@@ -58,7 +49,7 @@ namespace box2d
 		* @param body The parent body.
 		* @param def The CircleShape definition.
 		**/
-		CircleShape(Body * body, b2CircleDef * def);
+		CircleShape(b2CircleShape * c);
 
 		virtual ~CircleShape();
 
@@ -66,11 +57,11 @@ namespace box2d
 		* Gets the radius for the circle.
 		**/
 		float getRadius() const;
-
-		// There is no support for setting the radius.
-
-		void getLocalCenter(float & x, float & y) const;
-		void getWorldCenter(float & x, float & y) const;
+		
+		/**
+		* Gets the radius for the circle.
+		**/
+		void setRadius(float r);
 	};
 
 } // box2d