got vertex tests to pass again

surf/geometry.py

@@ -30,18 +30,12 @@ class Vertex(object):
     A vertex is a position along with other information such as color, normal
     vector and texture coordinates.
     '''
-    next_id
-    def __init__(self, polygon, parent_id=None, x=None, y=None, z=None, es=None):
+    def __init__(self, x=0.0, y=0.0, z=0.0):
         '''
         '''
-        self.polygon = polygon
-        self.parent_id = parent_id
         self.x = x
         self.y = y
         self.z = z
-        self.edge_ids = es or []
-        self.id = Vertex.next_id
-        Vertex.next_id += 1
     
     def __eq__(self, other):
         if(self.x == other.x and self.y == other.y and self.z == other.z):