Don't normalize normal vector when finding trianglar face normal

Since the method we use to find the triangular is an approximation, an additional normalizarion could fail. This is also stated in OBJ and STL file specs.
orbingol · Feb 9, 2018 · a3bef0b · a3bef0b
1 parent dd648f3
commit a3bef0b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/geomdl/exchange_helpers.py b/geomdl/exchange_helpers.py
@@ -131,7 +131,8 @@ def normal(self):
         if not self._normal:
             vec1 = utils.vector_generate(self._vertices[0].data, self._vertices[1].data)
             vec2 = utils.vector_generate(self._vertices[1].data, self._vertices[2].data)
-            self._normal = utils.vector_normalize(utils.vector_cross(vec1, vec2))
+            # self._normal = utils.vector_normalize(utils.vector_cross(vec1, vec2))
+            self._normal = utils.vector_cross(vec1, vec2)
         return self._normal
 
     def add_vertex(self, vertex=None):