ResInsight/Fwk/VizFwk/LibGeometry/cvfTriangleMeshEdgeExtractor.h

82 lines
2.6 KiB
C++

//##################################################################################################
//
// Custom Visualization Core library
// Copyright (C) 2011-2013 Ceetron AS
//
// This library may be used under the terms of either the GNU General Public License or
// the GNU Lesser General Public License as follows:
//
// GNU General Public License Usage
// This library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This library 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 General Public License at <<http://www.gnu.org/licenses/gpl.html>>
// for more details.
//
// GNU Lesser General Public License Usage
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library 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 at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
// for more details.
//
//##################################################################################################
#pragma once
#include "cvfArray.h"
#include <map>
namespace cvf {
//==================================================================================================
//
// Extract mesh from triangles with a key per triangle. Mesh edges will not be produced between
// triangles with the same key.
//
//==================================================================================================
class TriangleMeshEdgeExtractor
{
public:
TriangleMeshEdgeExtractor();
void addTriangles(const UIntArray& indices, const UIntArray& triangleKeys);
ref<UIntArray> lineIndices() const;
private:
std::map<int64, uint> m_edgeMap;
inline int64 edgeKey(uint v1, uint v2)
{
if (v1 < v2)
{
int64 key = v2;
key <<= 32;
return key + v1;
}
int64 key = v1;
key <<= 32;
return key + v2;
}
void addEdge(uint v1, uint v2, uint key);
};
}