Function quad_index3

tutorials/common/scenegraph/scenegraph.cpp:1239–1251

  }
  
  std::pair<int,int> quad_index3(int a0, int a1, int a2, int b0, int b1, int b2)
  {
    if      (b0 == a0) return quad_index2(0,a2,a1,b1,b2);
    else if (b0 == a1) return quad_index2(1,a0,a2,b1,b2);
    else if (b0 == a2) return quad_index2(2,a1,a0,b1,b2);
    else if (b1 == a0) return quad_index2(0,a2,a1,b0,b2);
    else if (b1 == a1) return quad_index2(1,a0,a2,b0,b2);
    else if (b1 == a2) return quad_index2(2,a1,a0,b0,b2);
    else if (b2 == a0) return quad_index2(0,a2,a1,b0,b1);
    else if (b2 == a1) return quad_index2(1,a0,a2,b0,b1);
    else if (b2 == a2) return quad_index2(2,a1,a0,b0,b1);
    else return std::make_pair(0,-1);
  }
  
  Ref<SceneGraph::Node> SceneGraph::convert_triangles_to_quads ( Ref<SceneGraph::TriangleMeshNode> tmesh )
  {