ResInsight/Fwk/VizFwk/LibGeometry/cvfTriangleVertexSplitter.h

78 lines
3.0 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"
namespace cvf {
//=================================================================================================
//
// Triangle Vertex Splitter Class
//
//=================================================================================================
class TriangleVertexSplitter
{
public:
TriangleVertexSplitter(double creaseAngle, const UIntValueArray& origTriangleIndices, const Vec3fValueArray& origVertexArray);
ref<UIntArray> triangleIndices();
ref<Vec3fArray> vertexArray();
ref<Vec3fArray> vertexNormals();
ref<UIntArray> perVertexOriginalIndices(); // Per vertex (source) indices into origVertexArray
private:
void splitVertices();
uint processVertex(uint origVertexIndex, const Vec3f& faceNormal);
bool isNormalDifferenceBelowThreshold(const Vec3f& n1, const Vec3f& n2);
private:
double m_creaseAngle;
const UIntValueArray& m_origTriangleIndices;
const Vec3fValueArray& m_origVertexArray;
bool m_isComputed;
ref<UIntArray> m_triangleIndices;
UIntArray m_origToUsedNodeMap;
std::vector<uint> m_nextSplitVertexIdx;
std::vector<Vec3f> m_vertexArray;
std::vector<Vec3f> m_normalArray;
};
}