fixed call to glNormal3fv() when dReal is a double

git-svn-id: svn://anubis/anaglym/trunk@145 99a6e188-d820-4881-8870-2d33a10e2619

Engine.cc

@@ -800,7 +800,11 @@ void Engine::Object::render()
             float x_o = (*m_args)[0];
             float y_o = (*m_args)[1];
             float z_o = (*m_args)[2];
+#ifdef dSINGLE
             glNormal3fv(rotated_plane_direction);
+#else
+            glNormal3dv(rotated_plane_direction);
+#endif
             for (int x = 0; x < num_sections; x++)
             {
                 glBegin(GL_QUAD_STRIP);