234 lines
7.9 KiB
C++
234 lines
7.9 KiB
C++
#pragma region License
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/******************************************************************************
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This file is part of the PolyVox library
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Copyright (C) 2006 David Williams
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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******************************************************************************/
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#pragma endregion
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#include "IndexedSurfacePatch.h"
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using namespace boost;
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namespace PolyVox
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{
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int32_t IndexedSurfacePatch::noOfVerticesSubmitted = 0;
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int32_t IndexedSurfacePatch::noOfVerticesAccepted = 0;
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int32_t IndexedSurfacePatch::noOfTrianglesSubmitted = 0;
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int32_t IndexedSurfacePatch::vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
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int32_t IndexedSurfacePatch::vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
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int32_t IndexedSurfacePatch::vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
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IndexedSurfacePatch::IndexedSurfacePatch(bool allowDuplicateVertices)
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:m_AllowDuplicateVertices(allowDuplicateVertices)
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{
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memset(vertexIndicesX,0xFF,sizeof(vertexIndicesX)); //0xFF is -1 as two's complement - this may not be portable...
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memset(vertexIndicesY,0xFF,sizeof(vertexIndicesY));
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memset(vertexIndicesZ,0xFF,sizeof(vertexIndicesZ));
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}
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IndexedSurfacePatch::~IndexedSurfacePatch()
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{
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}
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void IndexedSurfacePatch::addTriangle(const SurfaceVertex& v0,const SurfaceVertex& v1,const SurfaceVertex& v2)
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{
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noOfTrianglesSubmitted++;
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noOfVerticesSubmitted += 3;
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if(!m_AllowDuplicateVertices)
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{
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int32_t index = getIndexFor(v0.getPosition());
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if(index == -1)
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{
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m_vecVertices.push_back(v0);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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setIndexFor(v0.getPosition(), m_vecVertices.size()-1);
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noOfVerticesAccepted++;
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}
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else
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{
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m_vecTriangleIndices.push_back(index);
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}
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index = getIndexFor(v1.getPosition());
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if(index == -1)
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{
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m_vecVertices.push_back(v1);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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setIndexFor(v1.getPosition(), m_vecVertices.size()-1);
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noOfVerticesAccepted++;
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}
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else
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{
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m_vecTriangleIndices.push_back(index);
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}
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index = getIndexFor(v2.getPosition());
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if(index == -1)
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{
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m_vecVertices.push_back(v2);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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setIndexFor(v2.getPosition(), m_vecVertices.size()-1);
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noOfVerticesAccepted++;
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}
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else
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{
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m_vecTriangleIndices.push_back(index);
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}
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}
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else
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{
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m_vecVertices.push_back(v0);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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m_vecVertices.push_back(v1);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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m_vecVertices.push_back(v2);
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m_vecTriangleIndices.push_back(m_vecVertices.size()-1);
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noOfVerticesAccepted += 3;
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}
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}
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void IndexedSurfacePatch::fillVertexAndIndexData(std::vector<SurfaceVertex>& vecVertices, std::vector<uint32_t>& vecIndices)
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{
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vecVertices.resize(m_vecVertices.size());
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std::copy(m_vecVertices.begin(), m_vecVertices.end(), vecVertices.begin());
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vecIndices.resize(m_vecTriangleIndices.size());
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std::copy(m_vecTriangleIndices.begin(), m_vecTriangleIndices.end(), vecIndices.begin());
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/*for(std::vector<SurfaceVertexIterator>::iterator iterVertices = m_vecTriangleIndices.begin(); iterVertices != m_vecTriangleIndices.end(); ++iterVertices)
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{
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std::vector<SurfaceVertex>::iterator iterVertex = lower_bound(vecVertices.begin(), vecVertices.end(), **iterVertices);
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vecIndices.push_back(iterVertex - vecVertices.begin());
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}*/
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}
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boost::int32_t IndexedSurfacePatch::getIndexFor(const Vector3DFloat& pos)
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{
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assert(pos.getX() >= 0.0f);
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assert(pos.getY() >= 0.0f);
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assert(pos.getZ() >= 0.0f);
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assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH);
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assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH);
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assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH);
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float xIntPart;
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float xFracPart = std::modf(pos.getX(), &xIntPart);
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float yIntPart;
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float yFracPart = std::modf(pos.getY(), &yIntPart);
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float zIntPart;
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float zFracPart = std::modf(pos.getZ(), &zIntPart);
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//Of all the fractional parts, two should be zero and one should have a value.
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if(xFracPart > 0.000001f)
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{
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return vertexIndicesX[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)];
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}
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if(yFracPart > 0.000001f)
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{
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return vertexIndicesY[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)];
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}
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if(zFracPart > 0.000001f)
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{
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return vertexIndicesZ[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)];
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}
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while(true);
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}
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void IndexedSurfacePatch::setIndexFor(const Vector3DFloat& pos, boost::int32_t newIndex)
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{
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assert(pos.getX() >= 0.0f);
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assert(pos.getY() >= 0.0f);
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assert(pos.getZ() >= 0.0f);
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assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH);
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assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH);
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assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH);
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assert(newIndex < 10000);
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float xIntPart;
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float xFracPart = std::modf(pos.getX(), &xIntPart);
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float yIntPart;
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float yFracPart = std::modf(pos.getY(), &yIntPart);
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float zIntPart;
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float zFracPart = std::modf(pos.getZ(), &zIntPart);
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//Of all the fractional parts, two should be zero and one should have a value.
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if(xFracPart > 0.000001f)
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{
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vertexIndicesX[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)] = newIndex;
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}
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if(yFracPart > 0.000001f)
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{
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vertexIndicesY[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)] = newIndex;
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}
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if(zFracPart > 0.000001f)
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{
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vertexIndicesZ[static_cast<uint16_t>(xIntPart)][static_cast<uint16_t>(yIntPart)][static_cast<uint16_t>(zIntPart)] = newIndex;
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}
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}
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const std::vector<SurfaceVertex>& IndexedSurfacePatch::getVertices(void) const
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{
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return m_vecVertices;
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}
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std::vector<SurfaceVertex>& IndexedSurfacePatch::getVertices(void)
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{
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return m_vecVertices;
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}
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const std::vector<boost::uint32_t>& IndexedSurfacePatch::getIndices(void) const
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{
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return m_vecTriangleIndices;
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}
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unsigned short IndexedSurfacePatch::getNoNonUniformTrianges(void)
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{
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unsigned short result = 0;
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for(int i = 0; i < m_vecTriangleIndices.size() - 2; i += 3)
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{
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if((m_vecVertices[m_vecTriangleIndices[i]].getMaterial() == m_vecVertices[m_vecTriangleIndices[i+1]].getMaterial())
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&& (m_vecVertices[m_vecTriangleIndices[i]].getMaterial() == m_vecVertices[m_vecTriangleIndices[i+2]].getMaterial()))
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{
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}
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else
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{
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result++;
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}
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}
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return result;
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}
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unsigned short IndexedSurfacePatch::getNoUniformTrianges(void)
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{
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unsigned short result = 0;
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for(int i = 0; i < m_vecTriangleIndices.size() - 2; i += 3)
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{
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if((m_vecVertices[m_vecTriangleIndices[i]].getMaterial() == m_vecVertices[m_vecTriangleIndices[i+1]].getMaterial())
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&& (m_vecVertices[m_vecTriangleIndices[i]].getMaterial() == m_vecVertices[m_vecTriangleIndices[i+2]].getMaterial()))
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{
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result++;
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}
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}
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return result;
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}
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}
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