1 files changed, 21 insertions, 1 deletions
diff --git a/scene/resources/concave_polygon_shape.h b/scene/resources/concave_polygon_shape.h
index 7bd80eb9c0..fae98ee046 100644
--- a/scene/resources/concave_polygon_shape.h
+++ b/scene/resources/concave_polygon_shape.h
@@ -35,16 +35,36 @@ class ConcavePolygonShape : public Shape {
 
 	OBJ_TYPE(ConcavePolygonShape,Shape);
 
+	struct DrawEdge {
+
+		Vector3 a;
+		Vector3 b;
+		bool operator<(const DrawEdge& p_edge) const {
+			if (a==p_edge.a)
+				return b<p_edge.b;
+			else
+				return a<p_edge.a;
+		}
+
+		DrawEdge(const Vector3& p_a=Vector3(),const Vector3& p_b=Vector3()) {
+			a=p_a;
+			b=p_b;
+			if (a<b) {
+				SWAP(a,b);
+			}
+		}
+	};
 
 protected:
 
+
 	bool _set(const StringName& p_name, const Variant& p_value);
 	bool _get(const StringName& p_name,Variant &r_ret) const;
 	void _get_property_list( List<PropertyInfo> *p_list) const;
 	static void _bind_methods();
 
 	virtual void _update_shape();
-
+	virtual Vector<Vector3> _gen_debug_mesh_lines();
 public:
 
 	void set_faces(const DVector<Vector3>& p_faces);