235 lines
8.9 KiB
C++
235 lines
8.9 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 "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 "VolumeChangeTracker.h"
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#include "RegionGeometry.h"
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#include "SurfaceExtractors.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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// VolumeChangeTracker
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//////////////////////////////////////////////////////////////////////////
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VolumeChangeTracker::VolumeChangeTracker()
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:volumeData(0)
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{
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}
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VolumeChangeTracker::~VolumeChangeTracker()
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{
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}
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void VolumeChangeTracker::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> VolumeChangeTracker::getChangedRegionGeometry(void)
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{
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std::list<Region> listChangedRegions;
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getChangedRegions(listChangedRegions);
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std::list<RegionGeometry> listChangedRegionGeometry;
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for(std::list<Region>::const_iterator iterChangedRegions = listChangedRegions.begin(); iterChangedRegions != listChangedRegions.end(); ++iterChangedRegions)
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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 = iterChangedRegions->getLowerCorner();
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generateRoughMeshDataForRegion(volumeData, *iterChangedRegions, 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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return listChangedRegionGeometry;
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}
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void VolumeChangeTracker::getChangedRegions(std::list<Region>& listToFill)
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{
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//Clear the list
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listToFill.clear();
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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(volSurfaceUpToDate->getVoxelAt(regionX, regionY, regionZ) == false)
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{
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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 = firstX + POLYVOX_REGION_SIDE_LENGTH-1;
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const uint16_t lastY = firstY + POLYVOX_REGION_SIDE_LENGTH-1;
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const uint16_t lastZ = firstZ + POLYVOX_REGION_SIDE_LENGTH-1;
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listToFill.push_back(Region(Vector3DInt32(firstX, firstY, firstZ), Vector3DInt32(lastX, lastY, lastZ)));
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}
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}
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}
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}
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}
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void VolumeChangeTracker::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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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 VolumeChangeTracker::markRegionChanged(uint16_t firstX, uint16_t firstY, uint16_t firstZ, uint16_t lastX, uint16_t lastY, uint16_t lastZ)
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{
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const uint16_t firstRegionX = firstX >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t firstRegionY = firstY >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t firstRegionZ = firstZ >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t lastRegionX = lastX >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t lastRegionY = lastY >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t lastRegionZ = lastZ >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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for(uint16_t zCt = firstRegionZ; zCt <= lastRegionZ; zCt++)
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{
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for(uint16_t yCt = firstRegionY; yCt <= lastRegionY; yCt++)
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{
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for(uint16_t xCt = firstRegionX; xCt <= lastRegionX; xCt++)
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{
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//surfaceUpToDate[xCt][yCt][zCt] = false;
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volSurfaceUpToDate->setVoxelAt(xCt,yCt,zCt,false);
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}
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}
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}
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}
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uint16_t VolumeChangeTracker::getSideLength(void)
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{
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return volumeData->getSideLength();
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}
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Region VolumeChangeTracker::getEnclosingRegion(void)
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{
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return volumeData->getEnclosingRegion();
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}
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uint8_t VolumeChangeTracker::getVoxelAt(const Vector3DUint16& pos)
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{
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return getVoxelAt(pos.x(), pos.y(), pos.z());
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}
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uint8_t VolumeChangeTracker::getVoxelAt(uint16_t uX, uint16_t uY, uint16_t uZ)
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{
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assert(ux < volumeData->getSideLength());
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assert(uy < volumeData->getSideLength());
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assert(uz < volumeData->getSideLength());
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VolumeIterator<boost::uint8_t> volIter(*volumeData);
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volIter.setPosition(uX,uY,uZ);
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return volIter.getVoxel();
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}
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const BlockVolume<boost::uint8_t>* VolumeChangeTracker::getVolumeData(void) const
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{
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return volumeData;
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}
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void VolumeChangeTracker::setUnlockedVoxelAt(boost::uint16_t x, boost::uint16_t y, boost::uint16_t z, boost::uint8_t value)
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{
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//FIXME - rather than creating a iterator each time we should have one stored
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VolumeIterator<boost::uint8_t> iterVol(*volumeData);
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iterVol.setPosition(x,y,z);
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iterVol.setVoxel(value);
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//If we are not on a boundary, just mark one region.
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if((x % POLYVOX_REGION_SIDE_LENGTH != 0) &&
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(x % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1) &&
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(y % POLYVOX_REGION_SIDE_LENGTH != 0) &&
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(y % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1) &&
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(z % POLYVOX_REGION_SIDE_LENGTH != 0) &&
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(z % POLYVOX_REGION_SIDE_LENGTH != POLYVOX_REGION_SIDE_LENGTH-1))
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{
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volSurfaceUpToDate->setVoxelAt(x >> POLYVOX_REGION_SIDE_LENGTH_POWER, y >> POLYVOX_REGION_SIDE_LENGTH_POWER, z >> POLYVOX_REGION_SIDE_LENGTH_POWER, false);
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}
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else //Mark surrounding regions as well
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{
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const uint16_t regionX = x >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t regionY = y >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t regionZ = z >> POLYVOX_REGION_SIDE_LENGTH_POWER;
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const uint16_t minRegionX = (std::max)(uint16_t(0),uint16_t(regionX-1));
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const uint16_t minRegionY = (std::max)(uint16_t(0),uint16_t(regionY-1));
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const uint16_t minRegionZ = (std::max)(uint16_t(0),uint16_t(regionZ-1));
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const uint16_t maxRegionX = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionX+1));
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const uint16_t maxRegionY = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionY+1));
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const uint16_t maxRegionZ = (std::min)(uint16_t(POLYVOX_VOLUME_SIDE_LENGTH_IN_REGIONS-1),uint16_t(regionZ+1));
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for(uint16_t zCt = minRegionZ; zCt <= maxRegionZ; zCt++)
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{
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for(uint16_t yCt = minRegionY; yCt <= maxRegionY; yCt++)
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{
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for(uint16_t xCt = minRegionX; xCt <= maxRegionX; xCt++)
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{
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volSurfaceUpToDate->setVoxelAt(xCt,yCt,zCt,false);
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}
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}
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}
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}
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}
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void VolumeChangeTracker::setLockedVoxelAt(boost::uint16_t x, boost::uint16_t y, boost::uint16_t z, boost::uint8_t value)
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{
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//FIXME - rather than creating a iterator each time we should have one stored
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VolumeIterator<boost::uint8_t> iterVol(*volumeData);
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iterVol.setPosition(x,y,z);
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iterVol.setVoxel(value);
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}
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}
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