1081 lines
42 KiB
C++
1081 lines
42 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 "GradientEstimators.h"
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#include "IndexedSurfacePatch.h"
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#include "LinearVolume.h"
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#include "MarchingCubesTables.h"
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#include "PolyVoxSceneManager.h"
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#include "RegionGeometry.h"
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#include "SurfaceVertex.h"
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#include "Utility.h"
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#include "Vector.h"
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#include "BlockVolume.h"
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#include "VolumeIterator.h"
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using namespace boost;
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namespace PolyVox
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{
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//////////////////////////////////////////////////////////////////////////
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// PolyVoxSceneManager
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//////////////////////////////////////////////////////////////////////////
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PolyVoxSceneManager::PolyVoxSceneManager()
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:volumeData(0)
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,useNormalSmoothing(false)
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,normalSmoothingFilterSize(1)
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,m_normalGenerationMethod(SOBEL)
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,m_bHaveGeneratedMeshes(false)
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{
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//sceneNodes.clear();`
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}
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PolyVoxSceneManager::~PolyVoxSceneManager()
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{
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}
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void PolyVoxSceneManager::setVolumeData(BlockVolume<boost::uint8_t>* volumeDataToSet)
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{
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volumeData = volumeDataToSet;
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volSurfaceUpToDate = new LinearVolume<bool>(PolyVox::logBase2(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS));
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}
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std::list<RegionGeometry> PolyVoxSceneManager::getChangedRegionGeometry(void)
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{
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std::list<RegionGeometry> listChangedRegionGeometry;
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//Regenerate meshes.
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for(uint16_t regionZ = 0; regionZ < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++regionZ)
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//for(uint16_t regionZ = 6; regionZ < 7; ++regionZ)
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{
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for(uint16_t regionY = 0; regionY < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++regionY)
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//for(uint16_t regionY = 6; regionY < 7; ++regionY)
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{
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for(uint16_t regionX = 0; regionX < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++regionX)
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//for(uint16_t regionX = 3; regionX < 4; ++regionX)
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{
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//if(surfaceUpToDate[regionX][regionY][regionZ] == false)
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if(volSurfaceUpToDate->getVoxelAt(regionX, regionY, regionZ) == false)
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{
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//Generate the surface
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RegionGeometry regionGeometry;
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regionGeometry.m_patchSingleMaterial = new IndexedSurfacePatch(false);
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regionGeometry.m_patchMultiMaterial = new IndexedSurfacePatch(true);
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regionGeometry.m_v3dRegionPosition = Vector3DInt32(regionX, regionY, regionZ);
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generateRoughMeshDataForRegion(regionX,regionY,regionZ, regionGeometry.m_patchSingleMaterial, regionGeometry.m_patchMultiMaterial);
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regionGeometry.m_bContainsSingleMaterialPatch = regionGeometry.m_patchSingleMaterial->getVertices().size() > 0;
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regionGeometry.m_bContainsMultiMaterialPatch = regionGeometry.m_patchMultiMaterial->getVertices().size() > 0;
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regionGeometry.m_bIsEmpty = ((regionGeometry.m_patchSingleMaterial->getVertices().size() == 0) && (regionGeometry.m_patchMultiMaterial->getIndices().size() == 0));
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listChangedRegionGeometry.push_back(regionGeometry);
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}
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}
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}
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}
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return listChangedRegionGeometry;
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}
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void PolyVoxSceneManager::setAllUpToDateFlagsTo(bool newUpToDateValue)
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{
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for(uint16_t blockZ = 0; blockZ < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++blockZ)
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{
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for(uint16_t blockY = 0; blockY < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++blockY)
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{
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for(uint16_t blockX = 0; blockX < POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS; ++blockX)
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{
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//surfaceUpToDate[blockX][blockY][blockZ] = newUpToDateValue;
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volSurfaceUpToDate->setVoxelAt(blockX, blockY, blockZ, newUpToDateValue);
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}
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}
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}
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}
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void PolyVoxSceneManager::createSphereAt(Vector3DFloat centre, float radius, uint8_t value, bool painting)
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{
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int firstX = static_cast<int>(std::floor(centre.x() - radius));
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int firstY = static_cast<int>(std::floor(centre.y() - radius));
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int firstZ = static_cast<int>(std::floor(centre.z() - radius));
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int lastX = static_cast<int>(std::ceil(centre.x() + radius));
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int lastY = static_cast<int>(std::ceil(centre.y() + radius));
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int lastZ = static_cast<int>(std::ceil(centre.z() + radius));
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float radiusSquared = radius * radius;
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//Check bounds
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firstX = std::max(firstX,0);
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firstY = std::max(firstY,0);
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firstZ = std::max(firstZ,0);
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lastX = std::min(lastX,int(volumeData->getSideLength()-1));
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lastY = std::min(lastY,int(volumeData->getSideLength()-1));
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lastZ = std::min(lastZ,int(volumeData->getSideLength()-1));
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VolumeIterator<boost::uint8_t> volIter(*volumeData);
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volIter.setValidRegion(firstX,firstY,firstZ,lastX,lastY,lastZ);
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volIter.setPosition(firstX,firstY,firstZ);
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while(volIter.isValidForRegion())
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{
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//if((volIter.getPosX()*volIter.getPosX()+volIter.getPosY()*volIter.getPosY()+volIter.getPosZ()*volIter.getPosZ()) < radiusSquared)
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if((centre - Vector3DFloat(volIter.getPosX(),volIter.getPosY(),volIter.getPosZ())).lengthSquared() <= radiusSquared)
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{
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if(painting)
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{
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if(volIter.getVoxel() != 0)
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{
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volIter.setVoxel(value);
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//volIter.setVoxelAt(volIter.getPosX(),volIter.getPosY(),volIter.getPosZ(),value);
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}
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}
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else
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{
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volIter.setVoxel(value);
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//volIter.setVoxelAt(volIter.getPosX(),volIter.getPosY(),volIter.getPosZ(),value);
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}
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//markVoxelChanged(volIter.getPosX(),volIter.getPosY(),volIter.getPosZ()); //FIXME - create a version of this function to mark larger regions at a time.
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}
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volIter.moveForwardInRegion();
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}
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markRegionChanged(firstX,firstY,firstZ,lastX,lastY,lastZ);
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}
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void PolyVoxSceneManager::generateRoughMeshDataForRegion(const uint16_t regionX, const uint16_t regionY, const uint16_t regionZ, IndexedSurfacePatch* singleMaterialPatch, IndexedSurfacePatch* multiMaterialPatch) const
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{
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//First and last voxels in the region
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const uint16_t firstX = regionX * POLYVOX_REGION_SIDE_LENGTH;
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const uint16_t firstY = regionY * POLYVOX_REGION_SIDE_LENGTH;
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const uint16_t firstZ = regionZ * POLYVOX_REGION_SIDE_LENGTH;
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const uint16_t lastX = (std::min)(firstX + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
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const uint16_t lastY = (std::min)(firstY + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
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const uint16_t lastZ = (std::min)(firstZ + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
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//Offset from lower block corner
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const Vector3DFloat offset(firstX,firstY,firstZ);
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Vector3DFloat vertlist[12];
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uint8_t vertMaterials[12];
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VolumeIterator<boost::uint8_t> volIter(*volumeData);
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volIter.setValidRegion(firstX,firstY,firstZ,lastX,lastY,lastZ);
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//////////////////////////////////////////////////////////////////////////
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//Get mesh data
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//////////////////////////////////////////////////////////////////////////
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//Iterate over each cell in the region
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for(volIter.setPosition(firstX,firstY,firstZ);volIter.isValidForRegion();volIter.moveForwardInRegion())
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{
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//Current position
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const uint16_t x = volIter.getPosX();
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const uint16_t y = volIter.getPosY();
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const uint16_t z = volIter.getPosZ();
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//Voxels values
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const uint8_t v000 = volIter.getVoxel();
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const uint8_t v100 = volIter.peekVoxel1px0py0pz();
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const uint8_t v010 = volIter.peekVoxel0px1py0pz();
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const uint8_t v110 = volIter.peekVoxel1px1py0pz();
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const uint8_t v001 = volIter.peekVoxel0px0py1pz();
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const uint8_t v101 = volIter.peekVoxel1px0py1pz();
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const uint8_t v011 = volIter.peekVoxel0px1py1pz();
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const uint8_t v111 = volIter.peekVoxel1px1py1pz();
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//Determine the index into the edge table which tells us which vertices are inside of the surface
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uint8_t iCubeIndex = 0;
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if (v000 == 0) iCubeIndex |= 1;
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if (v100 == 0) iCubeIndex |= 2;
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if (v110 == 0) iCubeIndex |= 4;
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if (v010 == 0) iCubeIndex |= 8;
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if (v001 == 0) iCubeIndex |= 16;
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if (v101 == 0) iCubeIndex |= 32;
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if (v111 == 0) iCubeIndex |= 64;
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if (v011 == 0) iCubeIndex |= 128;
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/* Cube is entirely in/out of the surface */
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if (edgeTable[iCubeIndex] == 0)
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{
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continue;
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}
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/* Find the vertices where the surface intersects the cube */
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if (edgeTable[iCubeIndex] & 1)
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{
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vertlist[0].setX(x + 0.5f);
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vertlist[0].setY(y);
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vertlist[0].setZ(z);
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vertMaterials[0] = v000 | v100; //Because one of these is 0, the or operation takes the max.
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}
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if (edgeTable[iCubeIndex] & 2)
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{
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vertlist[1].setX(x + 1.0f);
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vertlist[1].setY(y + 0.5f);
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vertlist[1].setZ(z);
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vertMaterials[1] = v100 | v110;
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}
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if (edgeTable[iCubeIndex] & 4)
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{
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vertlist[2].setX(x + 0.5f);
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vertlist[2].setY(y + 1.0f);
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vertlist[2].setZ(z);
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vertMaterials[2] = v010 | v110;
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}
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if (edgeTable[iCubeIndex] & 8)
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{
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vertlist[3].setX(x);
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vertlist[3].setY(y + 0.5f);
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vertlist[3].setZ(z);
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vertMaterials[3] = v000 | v010;
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}
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if (edgeTable[iCubeIndex] & 16)
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{
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vertlist[4].setX(x + 0.5f);
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vertlist[4].setY(y);
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vertlist[4].setZ(z + 1.0f);
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vertMaterials[4] = v001 | v101;
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}
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if (edgeTable[iCubeIndex] & 32)
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{
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vertlist[5].setX(x + 1.0f);
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vertlist[5].setY(y + 0.5f);
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vertlist[5].setZ(z + 1.0f);
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vertMaterials[5] = v101 | v111;
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}
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if (edgeTable[iCubeIndex] & 64)
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{
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vertlist[6].setX(x + 0.5f);
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vertlist[6].setY(y + 1.0f);
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vertlist[6].setZ(z + 1.0f);
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vertMaterials[6] = v011 | v111;
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}
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if (edgeTable[iCubeIndex] & 128)
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{
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vertlist[7].setX(x);
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vertlist[7].setY(y + 0.5f);
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vertlist[7].setZ(z + 1.0f);
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vertMaterials[7] = v001 | v011;
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}
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if (edgeTable[iCubeIndex] & 256)
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{
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vertlist[8].setX(x);
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vertlist[8].setY(y);
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vertlist[8].setZ(z + 0.5f);
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vertMaterials[8] = v000 | v001;
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}
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if (edgeTable[iCubeIndex] & 512)
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{
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vertlist[9].setX(x + 1.0f);
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vertlist[9].setY(y);
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vertlist[9].setZ(z + 0.5f);
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vertMaterials[9] = v100 | v101;
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}
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if (edgeTable[iCubeIndex] & 1024)
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{
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vertlist[10].setX(x + 1.0f);
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vertlist[10].setY(y + 1.0f);
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vertlist[10].setZ(z + 0.5f);
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vertMaterials[10] = v110 | v111;
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}
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if (edgeTable[iCubeIndex] & 2048)
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{
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vertlist[11].setX(x);
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vertlist[11].setY(y + 1.0f);
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vertlist[11].setZ(z + 0.5f);
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vertMaterials[11] = v010 | v011;
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}
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for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3)
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{
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//The three vertices forming a triangle
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const Vector3DFloat vertex0 = vertlist[triTable[iCubeIndex][i ]] - offset;
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const Vector3DFloat vertex1 = vertlist[triTable[iCubeIndex][i+1]] - offset;
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const Vector3DFloat vertex2 = vertlist[triTable[iCubeIndex][i+2]] - offset;
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//Cast to floats and divide by two.
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//const Vector3DFloat vertex0AsFloat = (static_cast<Vector3DFloat>(vertex0) / 2.0f) - offset;
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//const Vector3DFloat vertex1AsFloat = (static_cast<Vector3DFloat>(vertex1) / 2.0f) - offset;
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//const Vector3DFloat vertex2AsFloat = (static_cast<Vector3DFloat>(vertex2) / 2.0f) - offset;
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const uint8_t material0 = vertMaterials[triTable[iCubeIndex][i ]];
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const uint8_t material1 = vertMaterials[triTable[iCubeIndex][i+1]];
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const uint8_t material2 = vertMaterials[triTable[iCubeIndex][i+2]];
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//If all the materials are the same, we just need one triangle for that material with all the alphas set high.
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if((material0 == material1) && (material1 == material2))
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1f,1.0f);
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singleMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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else if(material0 == material1)
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{
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1f,0.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material2 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material2 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1f,1.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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}
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else if(material0 == material2)
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{
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1f,1.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1f,0.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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}
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else if(material1 == material2)
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{
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1f,1.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1f,0.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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}
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else
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{
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1f,0.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1f,1.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1f,0.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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{
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SurfaceVertex surfaceVertex0Alpha1(vertex0,material2 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex1Alpha1(vertex1,material2 + 0.1f,0.0f);
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SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1f,1.0f);
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multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
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}
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}
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//If there not all the same, we need one triangle for each unique material.
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//We'll also need some vertices with low alphas for blending.
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/*else
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{
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SurfaceVertex surfaceVertex0Alpha0(vertex0,0.0);
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SurfaceVertex surfaceVertex1Alpha0(vertex1,0.0);
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SurfaceVertex surfaceVertex2Alpha0(vertex2,0.0);
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if(material0 == material1)
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{
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surfacePatchMapResult[material0]->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha0);
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surfacePatchMapResult[material2]->addTriangle(surfaceVertex0Alpha0, surfaceVertex1Alpha0, surfaceVertex2Alpha1);
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}
|
|
else if(material1 == material2)
|
|
{
|
|
surfacePatchMapResult[material1]->addTriangle(surfaceVertex0Alpha0, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
surfacePatchMapResult[material0]->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha0, surfaceVertex2Alpha0);
|
|
}
|
|
else if(material2 == material0)
|
|
{
|
|
surfacePatchMapResult[material0]->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha0, surfaceVertex2Alpha1);
|
|
surfacePatchMapResult[material1]->addTriangle(surfaceVertex0Alpha0, surfaceVertex1Alpha1, surfaceVertex2Alpha0);
|
|
}
|
|
else
|
|
{
|
|
surfacePatchMapResult[material0]->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha0, surfaceVertex2Alpha0);
|
|
surfacePatchMapResult[material1]->addTriangle(surfaceVertex0Alpha0, surfaceVertex1Alpha1, surfaceVertex2Alpha0);
|
|
surfacePatchMapResult[material2]->addTriangle(surfaceVertex0Alpha0, surfaceVertex1Alpha0, surfaceVertex2Alpha1);
|
|
}
|
|
}*/
|
|
}//For each triangle
|
|
}//For each cell
|
|
|
|
//FIXME - can it happen that we have no vertices or triangles? Should exit early?
|
|
|
|
|
|
//for(std::map<uint8_t, IndexedSurfacePatch*>::iterator iterPatch = surfacePatchMapResult.begin(); iterPatch != surfacePatchMapResult.end(); ++iterPatch)
|
|
{
|
|
|
|
std::vector<SurfaceVertex>::iterator iterSurfaceVertex = singleMaterialPatch->getVertices().begin();
|
|
while(iterSurfaceVertex != singleMaterialPatch->getVertices().end())
|
|
{
|
|
Vector3DFloat tempNormal = computeNormal(static_cast<Vector3DFloat>(iterSurfaceVertex->getPosition() + offset), CENTRAL_DIFFERENCE);
|
|
const_cast<SurfaceVertex&>(*iterSurfaceVertex).setNormal(tempNormal);
|
|
++iterSurfaceVertex;
|
|
}
|
|
|
|
iterSurfaceVertex = multiMaterialPatch->getVertices().begin();
|
|
while(iterSurfaceVertex != multiMaterialPatch->getVertices().end())
|
|
{
|
|
Vector3DFloat tempNormal = computeNormal(static_cast<Vector3DFloat>(iterSurfaceVertex->getPosition() + offset), CENTRAL_DIFFERENCE);
|
|
const_cast<SurfaceVertex&>(*iterSurfaceVertex).setNormal(tempNormal);
|
|
++iterSurfaceVertex;
|
|
}
|
|
|
|
uint16_t noOfRemovedVertices = 0;
|
|
//do
|
|
{
|
|
//noOfRemovedVertices = iterPatch->second.decimate();
|
|
}
|
|
//while(noOfRemovedVertices > 10); //We don't worry about the last few vertices - it's not worth the overhead of calling the function.
|
|
}
|
|
|
|
//return singleMaterialPatch;
|
|
}
|
|
|
|
void PolyVoxSceneManager::generateSmoothMeshDataForRegion(const uint16_t regionX, const uint16_t regionY, const uint16_t regionZ, IndexedSurfacePatch* singleMaterialPatch, IndexedSurfacePatch* multiMaterialPatch) const
|
|
{
|
|
//First and last voxels in the region
|
|
const uint16_t firstX = regionX * POLYVOX_REGION_SIDE_LENGTH;
|
|
const uint16_t firstY = regionY * POLYVOX_REGION_SIDE_LENGTH;
|
|
const uint16_t firstZ = regionZ * POLYVOX_REGION_SIDE_LENGTH;
|
|
const uint16_t lastX = (std::min)(firstX + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
|
|
const uint16_t lastY = (std::min)(firstY + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
|
|
const uint16_t lastZ = (std::min)(firstZ + POLYVOX_REGION_SIDE_LENGTH-1,volumeData->getSideLength()-2);
|
|
|
|
//Offset from lower block corner
|
|
const Vector3DFloat offset(firstX,firstY,firstZ);
|
|
|
|
Vector3DFloat vertlist[12];
|
|
uint8_t vertMaterials[12];
|
|
VolumeIterator<boost::uint8_t> volIter(*volumeData);
|
|
volIter.setValidRegion(firstX,firstY,firstZ,lastX,lastY,lastZ);
|
|
|
|
const float threshold = 0.5f;
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
//Get mesh data
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
//Iterate over each cell in the region
|
|
for(volIter.setPosition(firstX,firstY,firstZ);volIter.isValidForRegion();volIter.moveForwardInRegion())
|
|
{
|
|
//Current position
|
|
const uint16_t x = volIter.getPosX();
|
|
const uint16_t y = volIter.getPosY();
|
|
const uint16_t z = volIter.getPosZ();
|
|
|
|
//Voxels values
|
|
VolumeIterator<boost::uint8_t> tempVolIter(*volumeData);
|
|
tempVolIter.setPosition(x,y,z);
|
|
const float v000 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x+1,y,z);
|
|
const float v100 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x,y+1,z);
|
|
const float v010 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x+1,y+1,z);
|
|
const float v110 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x,y,z+1);
|
|
const float v001 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x+1,y,z+1);
|
|
const float v101 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x,y+1,z+1);
|
|
const float v011 = tempVolIter.getAveragedVoxel(1);
|
|
tempVolIter.setPosition(x+1,y+1,z+1);
|
|
const float v111 = tempVolIter.getAveragedVoxel(1);
|
|
|
|
//Determine the index into the edge table which tells us which vertices are inside of the surface
|
|
uint8_t iCubeIndex = 0;
|
|
|
|
if (v000 < threshold) iCubeIndex |= 1;
|
|
if (v100 < threshold) iCubeIndex |= 2;
|
|
if (v110 < threshold) iCubeIndex |= 4;
|
|
if (v010 < threshold) iCubeIndex |= 8;
|
|
if (v001 < threshold) iCubeIndex |= 16;
|
|
if (v101 < threshold) iCubeIndex |= 32;
|
|
if (v111 < threshold) iCubeIndex |= 64;
|
|
if (v011 < threshold) iCubeIndex |= 128;
|
|
|
|
/* Cube is entirely in/out of the surface */
|
|
if (edgeTable[iCubeIndex] == 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
/* Find the vertices where the surface intersects the cube */
|
|
if (edgeTable[iCubeIndex] & 1)
|
|
{
|
|
float a = v000;
|
|
float b = v100;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[0].setX(x + val);
|
|
vertlist[0].setY(y);
|
|
vertlist[0].setZ(z);
|
|
vertMaterials[0] = 1;//v000 | v100; //Because one of these is 0, the or operation takes the max.
|
|
}
|
|
if (edgeTable[iCubeIndex] & 2)
|
|
{
|
|
float a = v100;
|
|
float b = v110;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[1].setX(x + 1.0f);
|
|
vertlist[1].setY(y + val);
|
|
vertlist[1].setZ(z);
|
|
vertMaterials[1] = 1;//v100 | v110;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 4)
|
|
{
|
|
float a = v010;
|
|
float b = v110;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[2].setX(x + val);
|
|
vertlist[2].setY(y + 1.0f);
|
|
vertlist[2].setZ(z);
|
|
vertMaterials[2] = 1;//v010 | v110;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 8)
|
|
{
|
|
float a = v000;
|
|
float b = v010;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[3].setX(x);
|
|
vertlist[3].setY(y + val);
|
|
vertlist[3].setZ(z);
|
|
vertMaterials[3] = 1;//v000 | v010;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 16)
|
|
{
|
|
float a = v001;
|
|
float b = v101;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[4].setX(x + val);
|
|
vertlist[4].setY(y);
|
|
vertlist[4].setZ(z + 1.0f);
|
|
vertMaterials[4] = 1;//v001 | v101;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 32)
|
|
{
|
|
float a = v101;
|
|
float b = v111;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[5].setX(x + 1.0f);
|
|
vertlist[5].setY(y + val);
|
|
vertlist[5].setZ(z + 1.0f);
|
|
vertMaterials[5] = 1;//v101 | v111;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 64)
|
|
{
|
|
float a = v011;
|
|
float b = v111;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[6].setX(x + val);
|
|
vertlist[6].setY(y + 1.0f);
|
|
vertlist[6].setZ(z + 1.0f);
|
|
vertMaterials[6] = 1;//v011 | v111;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 128)
|
|
{
|
|
float a = v001;
|
|
float b = v011;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[7].setX(x);
|
|
vertlist[7].setY(y + val);
|
|
vertlist[7].setZ(z + 1.0f);
|
|
vertMaterials[7] = 1;//v001 | v011;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 256)
|
|
{
|
|
float a = v000;
|
|
float b = v001;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[8].setX(x);
|
|
vertlist[8].setY(y);
|
|
vertlist[8].setZ(z + val);
|
|
vertMaterials[8] = 1;//v000 | v001;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 512)
|
|
{
|
|
float a = v100;
|
|
float b = v101;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[9].setX(x + 1.0f);
|
|
vertlist[9].setY(y);
|
|
vertlist[9].setZ(z + val);
|
|
vertMaterials[9] = 1;//v100 | v101;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 1024)
|
|
{
|
|
float a = v110;
|
|
float b = v111;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[10].setX(x + 1.0f);
|
|
vertlist[10].setY(y + 1.0f);
|
|
vertlist[10].setZ(z + val);
|
|
vertMaterials[10] = 1;//v110 | v111;
|
|
}
|
|
if (edgeTable[iCubeIndex] & 2048)
|
|
{
|
|
float a = v010;
|
|
float b = v011;
|
|
float val = (threshold-a)/(b-a);
|
|
vertlist[11].setX(x);
|
|
vertlist[11].setY(y + 1.0f);
|
|
vertlist[11].setZ(z + val);
|
|
vertMaterials[11] = 1;//v010 | v011;
|
|
}
|
|
|
|
for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3)
|
|
{
|
|
//The three vertices forming a triangle
|
|
const Vector3DFloat vertex0 = vertlist[triTable[iCubeIndex][i ]] - offset;
|
|
const Vector3DFloat vertex1 = vertlist[triTable[iCubeIndex][i+1]] - offset;
|
|
const Vector3DFloat vertex2 = vertlist[triTable[iCubeIndex][i+2]] - offset;
|
|
|
|
const uint8_t material0 = vertMaterials[triTable[iCubeIndex][i ]];
|
|
const uint8_t material1 = vertMaterials[triTable[iCubeIndex][i+1]];
|
|
const uint8_t material2 = vertMaterials[triTable[iCubeIndex][i+2]];
|
|
|
|
//If all the materials are the same, we just need one triangle for that material with all the alphas set high.
|
|
/*if((material0 == material1) && (material1 == material2))
|
|
{*/
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1f,1.0f);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1f,1.0f);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1f,1.0f);
|
|
singleMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
/*}
|
|
else if(material0 == material1)
|
|
{
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1,0.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material2 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material2 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1,1.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
}
|
|
else if(material0 == material2)
|
|
{
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1,1.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1,0.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
}
|
|
else if(material1 == material2)
|
|
{
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1,1.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1,0.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material0 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material0 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material0 + 0.1,0.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material1 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material1 + 0.1,1.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material1 + 0.1,0.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
|
|
{
|
|
SurfaceVertex surfaceVertex0Alpha1(vertex0,material2 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex1Alpha1(vertex1,material2 + 0.1,0.0);
|
|
SurfaceVertex surfaceVertex2Alpha1(vertex2,material2 + 0.1,1.0);
|
|
multiMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1);
|
|
}
|
|
}*/
|
|
}//For each triangle
|
|
}//For each cell
|
|
|
|
//FIXME - can it happen that we have no vertices or triangles? Should exit early?
|
|
|
|
|
|
//for(std::map<uint8_t, IndexedSurfacePatch*>::iterator iterPatch = surfacePatchMapResult.begin(); iterPatch != surfacePatchMapResult.end(); ++iterPatch)
|
|
{
|
|
|
|
std::vector<SurfaceVertex>::iterator iterSurfaceVertex = singleMaterialPatch->getVertices().begin();
|
|
while(iterSurfaceVertex != singleMaterialPatch->getVertices().end())
|
|
{
|
|
Vector3DFloat tempNormal = computeSmoothNormal(static_cast<Vector3DFloat>(iterSurfaceVertex->getPosition() + offset), CENTRAL_DIFFERENCE);
|
|
const_cast<SurfaceVertex&>(*iterSurfaceVertex).setNormal(tempNormal);
|
|
++iterSurfaceVertex;
|
|
}
|
|
|
|
iterSurfaceVertex = multiMaterialPatch->getVertices().begin();
|
|
while(iterSurfaceVertex != multiMaterialPatch->getVertices().end())
|
|
{
|
|
Vector3DFloat tempNormal = computeSmoothNormal(static_cast<Vector3DFloat>(iterSurfaceVertex->getPosition() + offset), CENTRAL_DIFFERENCE);
|
|
const_cast<SurfaceVertex&>(*iterSurfaceVertex).setNormal(tempNormal);
|
|
++iterSurfaceVertex;
|
|
}
|
|
}
|
|
}
|
|
|
|
Vector3DFloat PolyVoxSceneManager::computeNormal(const Vector3DFloat& position, NormalGenerationMethod normalGenerationMethod) const
|
|
{
|
|
|
|
|
|
const float posX = position.x();
|
|
const float posY = position.y();
|
|
const float posZ = position.z();
|
|
|
|
const uint16_t floorX = static_cast<uint16_t>(posX);
|
|
const uint16_t floorY = static_cast<uint16_t>(posY);
|
|
const uint16_t floorZ = static_cast<uint16_t>(posZ);
|
|
|
|
//Check all corners are within the volume, allowing a boundary for gradient estimation
|
|
bool lowerCornerInside = volumeData->containsPoint(Vector3DInt32(floorX, floorY, floorZ),1);
|
|
bool upperCornerInside = volumeData->containsPoint(Vector3DInt32(floorX+1, floorY+1, floorZ+1),1);
|
|
if((!lowerCornerInside) || (!upperCornerInside))
|
|
{
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
|
|
Vector3DFloat result;
|
|
|
|
VolumeIterator<boost::uint8_t> volIter(*volumeData); //FIXME - save this somewhere - could be expensive to create?
|
|
|
|
|
|
if(normalGenerationMethod == SOBEL)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const Vector3DFloat gradFloor = computeSobelGradient(volIter);
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX+1.0),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY+1.0),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ+1.0));
|
|
}
|
|
const Vector3DFloat gradCeil = computeSobelGradient(volIter);
|
|
result = ((gradFloor + gradCeil) * -1.0);
|
|
if(result.lengthSquared() < 0.0001)
|
|
{
|
|
//Operation failed - fall back on simple gradient estimation
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
}
|
|
if(normalGenerationMethod == CENTRAL_DIFFERENCE)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const Vector3DFloat gradFloor = computeCentralDifferenceGradient(volIter);
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX+1.0),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY+1.0),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ+1.0));
|
|
}
|
|
const Vector3DFloat gradCeil = computeCentralDifferenceGradient(volIter);
|
|
result = ((gradFloor + gradCeil) * -1.0);
|
|
if(result.lengthSquared() < 0.0001)
|
|
{
|
|
//Operation failed - fall back on simple gradient estimation
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
}
|
|
if(normalGenerationMethod == SIMPLE)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const uint8_t uFloor = volIter.getVoxel() > 0 ? 1 : 0;
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel1px0py0pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(static_cast<float>(uFloor - uCeil),0.0,0.0);
|
|
}
|
|
else if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel0px1py0pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(0.0,static_cast<float>(uFloor - uCeil),0.0);
|
|
}
|
|
else if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel0px0py1pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(0.0, 0.0,static_cast<float>(uFloor - uCeil));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Vector3DFloat PolyVoxSceneManager::computeSmoothNormal(const Vector3DFloat& position, NormalGenerationMethod normalGenerationMethod) const
|
|
{
|
|
|
|
|
|
const float posX = position.x();
|
|
const float posY = position.y();
|
|
const float posZ = position.z();
|
|
|
|
const uint16_t floorX = static_cast<uint16_t>(posX);
|
|
const uint16_t floorY = static_cast<uint16_t>(posY);
|
|
const uint16_t floorZ = static_cast<uint16_t>(posZ);
|
|
|
|
//Check all corners are within the volume, allowing a boundary for gradient estimation
|
|
bool lowerCornerInside = volumeData->containsPoint(Vector3DInt32(floorX, floorY, floorZ),1);
|
|
bool upperCornerInside = volumeData->containsPoint(Vector3DInt32(floorX+1, floorY+1, floorZ+1),1);
|
|
if((!lowerCornerInside) || (!upperCornerInside))
|
|
{
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
|
|
Vector3DFloat result;
|
|
|
|
VolumeIterator<boost::uint8_t> volIter(*volumeData); //FIXME - save this somewhere - could be expensive to create?
|
|
|
|
|
|
if(normalGenerationMethod == SOBEL)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const Vector3DFloat gradFloor = computeSobelGradient(volIter);
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX+1.0),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY+1.0),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ+1.0));
|
|
}
|
|
const Vector3DFloat gradCeil = computeSobelGradient(volIter);
|
|
result = ((gradFloor + gradCeil) * -1.0);
|
|
if(result.lengthSquared() < 0.0001)
|
|
{
|
|
//Operation failed - fall back on simple gradient estimation
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
}
|
|
if(normalGenerationMethod == CENTRAL_DIFFERENCE)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const Vector3DFloat gradFloor = computeSmoothCentralDifferenceGradient(volIter);
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX+1.0),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY+1.0),static_cast<uint16_t>(posZ));
|
|
}
|
|
if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ+1.0));
|
|
}
|
|
const Vector3DFloat gradCeil = computeSmoothCentralDifferenceGradient(volIter);
|
|
result = ((gradFloor + gradCeil) * -1.0);
|
|
if(result.lengthSquared() < 0.0001)
|
|
{
|
|
//Operation failed - fall back on simple gradient estimation
|
|
normalGenerationMethod = SIMPLE;
|
|
}
|
|
}
|
|
if(normalGenerationMethod == SIMPLE)
|
|
{
|
|
volIter.setPosition(static_cast<uint16_t>(posX),static_cast<uint16_t>(posY),static_cast<uint16_t>(posZ));
|
|
const uint8_t uFloor = volIter.getVoxel() > 0 ? 1 : 0;
|
|
if((posX - floorX) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel1px0py0pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(static_cast<float>(uFloor - uCeil),0.0,0.0);
|
|
}
|
|
else if((posY - floorY) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel0px1py0pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(0.0,static_cast<float>(uFloor - uCeil),0.0);
|
|
}
|
|
else if((posZ - floorZ) > 0.25) //The result should be 0.0 or 0.5
|
|
{
|
|
uint8_t uCeil = volIter.peekVoxel0px0py1pz() > 0 ? 1 : 0;
|
|
result = Vector3DFloat(0.0, 0.0,static_cast<float>(uFloor - uCeil));
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void PolyVoxSceneManager::markVoxelChanged(uint16_t x, uint16_t y, uint16_t z)
|
|
{
|
|
//If we are not on a boundary, just mark one region.
|
|
if((x % POLYVOX_REGION_SIDE_LENGTH != 0) &&
|
|
(x % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1) &&
|
|
(y % POLYVOX_REGION_SIDE_LENGTH != 0) &&
|
|
(y % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1) &&
|
|
(z % POLYVOX_REGION_SIDE_LENGTH != 0) &&
|
|
(z % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1))
|
|
{
|
|
//surfaceUpToDate[x >> POLYVOX_REGION_SIDE_LENGTH_POWER][y >> POLYVOX_REGION_SIDE_LENGTH_POWER][z >> POLYVOX_REGION_SIDE_LENGTH_POWER] = false;
|
|
volSurfaceUpToDate->setVoxelAt(x >> POLYVOX_REGION_SIDE_LENGTH_POWER, y >> POLYVOX_REGION_SIDE_LENGTH_POWER, z >> POLYVOX_REGION_SIDE_LENGTH_POWER, false);
|
|
}
|
|
else //Mark surrounding block as well
|
|
{
|
|
const uint16_t regionX = x >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t regionY = y >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t regionZ = z >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
|
|
const uint16_t minRegionX = (std::max)(uint16_t(0),uint16_t(regionX-1));
|
|
const uint16_t minRegionY = (std::max)(uint16_t(0),uint16_t(regionY-1));
|
|
const uint16_t minRegionZ = (std::max)(uint16_t(0),uint16_t(regionZ-1));
|
|
|
|
const uint16_t maxRegionX = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionX+1));
|
|
const uint16_t maxRegionY = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionY+1));
|
|
const uint16_t maxRegionZ = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionZ+1));
|
|
|
|
for(uint16_t zCt = minRegionZ; zCt <= maxRegionZ; zCt++)
|
|
{
|
|
for(uint16_t yCt = minRegionY; yCt <= maxRegionY; yCt++)
|
|
{
|
|
for(uint16_t xCt = minRegionX; xCt <= maxRegionX; xCt++)
|
|
{
|
|
//surfaceUpToDate[xCt][yCt][zCt] = false;
|
|
volSurfaceUpToDate->setVoxelAt(xCt,yCt,zCt,false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void PolyVoxSceneManager::markRegionChanged(uint16_t firstX, uint16_t firstY, uint16_t firstZ, uint16_t lastX, uint16_t lastY, uint16_t lastZ)
|
|
{
|
|
const uint16_t firstRegionX = firstX >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t firstRegionY = firstY >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t firstRegionZ = firstZ >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
|
|
const uint16_t lastRegionX = lastX >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t lastRegionY = lastY >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
const uint16_t lastRegionZ = lastZ >> POLYVOX_REGION_SIDE_LENGTH_POWER;
|
|
|
|
for(uint16_t zCt = firstRegionZ; zCt <= lastRegionZ; zCt++)
|
|
{
|
|
for(uint16_t yCt = firstRegionY; yCt <= lastRegionY; yCt++)
|
|
{
|
|
for(uint16_t xCt = firstRegionX; xCt <= lastRegionX; xCt++)
|
|
{
|
|
//surfaceUpToDate[xCt][yCt][zCt] = false;
|
|
volSurfaceUpToDate->setVoxelAt(xCt,yCt,zCt,false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
uint16_t PolyVoxSceneManager::getSideLength(void)
|
|
{
|
|
return volumeData->getSideLength();
|
|
}
|
|
|
|
uint8_t PolyVoxSceneManager::getMaterialIndexAt(uint16_t uX, uint16_t uY, uint16_t uZ)
|
|
{
|
|
if(volumeData->containsPoint(Vector3DInt32(uX,uY,uZ),0))
|
|
{
|
|
VolumeIterator<boost::uint8_t> volIter(*volumeData);
|
|
volIter.setPosition(uX,uY,uZ);
|
|
return volIter.getVoxel();
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void PolyVoxSceneManager::setNormalGenerationMethod(NormalGenerationMethod method)
|
|
{
|
|
m_normalGenerationMethod = method;
|
|
}
|
|
|
|
/*bool PolyVoxSceneManager::containsPoint(Vector3DFloat pos, float boundary)
|
|
{
|
|
return volumeData->containsPoint(pos, boundary);
|
|
}
|
|
|
|
bool PolyVoxSceneManager::containsPoint(Vector3DInt32 pos, uint16_t boundary)
|
|
{
|
|
return volumeData->containsPoint(pos, boundary);
|
|
}*/
|
|
|
|
/*
|
|
|
|
void PolyVoxSceneManager::setAxisVisible(bool visible)
|
|
{
|
|
if(m_axisNode)
|
|
m_axisNode->setVisible(visible);
|
|
}*/
|
|
|
|
const BlockVolume<boost::uint8_t>* PolyVoxSceneManager::getVolumeData(void) const
|
|
{
|
|
return volumeData;
|
|
}
|
|
}
|