simple_grid.h

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/*
 * Copyright (c) 2010-2015:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 */
 
#ifndef __H__REMESHING__SIMPLE_GRID__
#define __H__REMESHING__SIMPLE_GRID__
 
#include <vector>
#include "lib_grid/lg_base.h"
 
namespace ug
{
 
//  SimpleGrid
class SimpleGrid
{
  public:
    void clear();
    std::vector<vector3>  vertices;
    std::vector<vector3>  vertexNormals;
    std::vector<int>    triangles;
    std::vector<vector3>  triangleNormals;
};
 
void PrintSimpleGrid(SimpleGrid& sg);
 
//  ObtainSimpleGrid
 
template <class TPosAcc, class TIntAcc, class TNormAcc>
bool ObtainSimpleGrid(SimpleGrid& sgOut, Grid& grid,
            Vertex* vrt1, Vertex* vrt2, size_t size,
            TPosAcc& aaPos, TNormAcc& aaNorm,
            TIntAcc& aaInt);
 
//  ObtainSimpleGrid
 
template <class TPosAcc, class TIntAcc, class TNormAcc>
bool ObtainSimpleGrid_CollapseEdge(SimpleGrid& sgOut, Grid& grid,
            Edge* e, size_t size,
            TPosAcc& aaPos, TNormAcc& aaNorm,
            TIntAcc& aaInt);
 
 
void CalculateTriangleNormal(SimpleGrid& sg, int triIndex);
 
void CalculateTriangleNormals(SimpleGrid& sg);
 
 
 
 
number GeometricApproximationDegree(SimpleGrid& sg, int triIndex);
 
 
number GeometricApproximationDegree(SimpleGrid& sg);
 
 
number ShapeQualityDegree(SimpleGrid& sg, int triIndex);
 
 
number ShapeQualityDegree(SimpleGrid& sg);
 
 
 
bool SwapEdge(SimpleGrid& sg);
 
 
bool SplitEdge(SimpleGrid& sg);
 
 
bool CollapseEdge(SimpleGrid& sg);
 
}// end of namespace
 
 
//  include implementation
#include "simple_grid_impl.hpp"
 
#endif