89c48cdc27
Also initial work on a 'dynamic' mesh for simplification... but this probably won't be needed now.
158 lines
3.7 KiB
C++
158 lines
3.7 KiB
C++
#pragma region License
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/*******************************************************************************
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Copyright (c) 2005-2009 David Williams
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*******************************************************************************/
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#pragma endregion
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#include "MeshEdge.h"
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#include "Mesh.h"
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#include "MeshFace.h"
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#include "MeshVertex.h"
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#include "SurfaceVertex.h"
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#include <set>
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namespace PolyVox
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{
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bool operator==(const MeshEdge& lhs, const MeshEdge& rhs)
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{
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return lhs.m_pSrc == rhs.m_pSrc && lhs.m_pDest == rhs.m_pDest;
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}
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bool operator<(const MeshEdge& lhs, const MeshEdge& rhs)
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{
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if(lhs == rhs)
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return false;
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if (lhs.m_pSrc < rhs.m_pSrc)
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return true;
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if (rhs.m_pSrc < lhs.m_pSrc)
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return false;
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if (lhs.m_pDest < rhs.m_pDest)
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return true;
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if (rhs.m_pDest < lhs.m_pDest)
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return false;
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return false;
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}
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MeshEdge::MeshEdge()
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{
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m_pOtherEdge = 0;
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m_pNextEdge = 0;
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m_pPreviousEdge = 0;
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m_pSrc = 0;
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m_pDest = 0;
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m_pFace = 0;
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m_fCost = 1000000.0f;
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}
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void MeshEdge::computeEdgeCost(Mesh* pParentMesh)
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{
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SurfaceVertex v0Data = m_pSrc->m_vertexData;
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SurfaceVertex v1Data = m_pDest->m_vertexData;
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m_fCost = 1000000.0f;
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//For now, don't collapse vertices on material edges...
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if(v0Data.isOnMaterialEdge() || v1Data.isOnMaterialEdge())
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{
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return;
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}
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//...or those on geometry (region) edges.
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if(v0Data.isOnGeometryEdge() || v1Data.isOnGeometryEdge())
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{
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return;
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}
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//Check the normals are within the threshold.
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if(v0Data.getNormal().dot(v1Data.getNormal()) < 0.999)
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{
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return;
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}
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//Test for face flips
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for(std::set<MeshFace*>::iterator faceIter = pParentMesh->m_faces.begin(); faceIter != pParentMesh->m_faces.end(); faceIter++)
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{
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if((*faceIter)->collapseFlipsFace(this))
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{
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return;
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}
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}
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m_fCost = 0.0f;
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return;
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}
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bool MeshEdge::isSane(void)
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{
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if(m_pSrc == 0)
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{
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std::cout << "SANITY CHECK FAIL: Edge has no source vertex" << std::endl;
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return false;
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}
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if(m_pDest == 0)
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{
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std::cout << "SANITY CHECK FAIL: Edge has no destination vertex" << std::endl;
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return false;
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}
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if(m_pFace == 0)
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{
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std::cout << "SANITY CHECK FAIL: Edge has no face attached" << std::endl;
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return false;
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}
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//Check loops
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if(this != m_pNextEdge->m_pNextEdge->m_pNextEdge)
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{
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std::cout << "SANITY CHECK FAIL: Next edge loop is broken" << std::endl;
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return false;
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}
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if(this != m_pPreviousEdge->m_pPreviousEdge->m_pPreviousEdge)
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{
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std::cout << "SANITY CHECK FAIL: Previous edge loop is broken" << std::endl;
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return false;
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}
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//Make sure the other edge points back here
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if(m_pOtherEdge != 0)
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{
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if(this != m_pOtherEdge->m_pOtherEdge)
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{
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std::cout << "SANITY CHECK FAIL: Other edge exists but does not point back here." << std::endl;
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return false;
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}
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}
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return true;
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}
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} |