217 lines
7.2 KiB
C++
217 lines
7.2 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 "PolyVoxUtil/VolumeChangeTracker.h"
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#include "PolyVoxCore/GradientEstimators.h"
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#include "PolyVoxCore/IndexedSurfacePatch.h"
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#include "PolyVoxCore/MarchingCubesTables.h"
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#include "PolyVoxCore/SurfaceExtractors.h"
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#include "PolyVoxCore/SurfaceVertex.h"
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#include "PolyVoxCore/Utility.h"
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#include "PolyVoxCore/Vector.h"
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#include "PolyVoxCore/Volume.h"
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#include "PolyVoxCore/VolumeIterator.h"
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using namespace std;
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namespace PolyVox
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{
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int32 VolumeChangeTracker::m_iCurrentTime = 0;
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//////////////////////////////////////////////////////////////////////////
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// VolumeChangeTracker
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//////////////////////////////////////////////////////////////////////////
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VolumeChangeTracker::VolumeChangeTracker(Volume<uint8>* volumeDataToSet, uint16 regionSideLength)
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:m_bIsLocked(false)
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,volumeData(0)
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,m_uRegionSideLength(regionSideLength)
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{
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volumeData = volumeDataToSet;
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m_uVolumeSideLengthInRegions = volumeData->getSideLength() / m_uRegionSideLength;
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m_uRegionSideLengthPower = PolyVox::logBase2(m_uRegionSideLength);
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volRegionLastModified = new Block<int32>(m_uRegionSideLengthPower);
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}
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VolumeChangeTracker::~VolumeChangeTracker()
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{
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}
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void VolumeChangeTracker::setAllRegionsModified(void)
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{
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for(uint16 blockZ = 0; blockZ < m_uVolumeSideLengthInRegions; ++blockZ)
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{
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for(uint16 blockY = 0; blockY < m_uVolumeSideLengthInRegions; ++blockY)
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{
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for(uint16 blockX = 0; blockX < m_uVolumeSideLengthInRegions; ++blockX)
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{
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volRegionLastModified->setVoxelAt(blockX, blockY, blockZ, m_iCurrentTime);
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++m_iCurrentTime;
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}
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}
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}
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}
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int32 VolumeChangeTracker::getCurrentTime(void) const
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{
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return m_iCurrentTime;
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}
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uint16 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) const
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{
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return volumeData->getEnclosingRegion();
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}
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int32 VolumeChangeTracker::getLastModifiedTimeForRegion(uint16 uX, uint16 uY, uint16 uZ)
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{
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return volRegionLastModified->getVoxelAt(uX, uY, uZ);
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}
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uint8 VolumeChangeTracker::getVoxelAt(const Vector3DUint16& pos)
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{
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return getVoxelAt(pos.getX(), pos.getY(), pos.getZ());
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}
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uint8 VolumeChangeTracker::getVoxelAt(uint16 uX, uint16 uY, uint16 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<uint8> 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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Volume<uint8>* VolumeChangeTracker::getVolumeData(void) const
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{
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return volumeData;
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}
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//NOTE - Document the fact that the time stamp is incremented at the start, not the end.
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void VolumeChangeTracker::setVoxelAt(uint16 x, uint16 y, uint16 z, uint8 value)
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{
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++m_iCurrentTime;
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//FIXME - rather than creating a iterator each time we should have one stored
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//VolumeIterator<uint8> iterVol(*volumeData);
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/*iterVol.setPosition(x,y,z);
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iterVol.setVoxel(value);*/
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volumeData->setVoxelAt(x,y,z,value);
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//If we are not on a boundary, just mark one region.
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if((x % m_uRegionSideLength != 0) &&
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(x % m_uRegionSideLength != m_uRegionSideLength-1) &&
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(y % m_uRegionSideLength != 0) &&
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(y % m_uRegionSideLength != m_uRegionSideLength-1) &&
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(z % m_uRegionSideLength != 0) &&
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(z % m_uRegionSideLength != m_uRegionSideLength-1))
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{
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volRegionLastModified->setVoxelAt(x >> m_uRegionSideLengthPower, y >> m_uRegionSideLengthPower, z >> m_uRegionSideLengthPower, m_iCurrentTime);
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}
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else //Mark surrounding regions as well
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{
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const uint16 regionX = x >> m_uRegionSideLengthPower;
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const uint16 regionY = y >> m_uRegionSideLengthPower;
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const uint16 regionZ = z >> m_uRegionSideLengthPower;
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const uint16 minRegionX = (std::max)(uint16(0),uint16(regionX-1));
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const uint16 minRegionY = (std::max)(uint16(0),uint16(regionY-1));
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const uint16 minRegionZ = (std::max)(uint16(0),uint16(regionZ-1));
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const uint16 maxRegionX = (std::min)(uint16(m_uVolumeSideLengthInRegions-1),uint16(regionX+1));
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const uint16 maxRegionY = (std::min)(uint16(m_uVolumeSideLengthInRegions-1),uint16(regionY+1));
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const uint16 maxRegionZ = (std::min)(uint16(m_uVolumeSideLengthInRegions-1),uint16(regionZ+1));
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for(uint16 zCt = minRegionZ; zCt <= maxRegionZ; zCt++)
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{
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for(uint16 yCt = minRegionY; yCt <= maxRegionY; yCt++)
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{
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for(uint16 xCt = minRegionX; xCt <= maxRegionX; xCt++)
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{
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volRegionLastModified->setVoxelAt(xCt,yCt,zCt,m_iCurrentTime);
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}
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}
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}
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}
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//++m_iCurrentTime;
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}
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void VolumeChangeTracker::setLockedVoxelAt(uint16 x, uint16 y, uint16 z, uint8 value)
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{
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assert(m_bIsLocked);
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//FIXME - rather than creating a iterator each time we should have one stored
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/*VolumeIterator<uint8> iterVol(*volumeData);
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iterVol.setPosition(x,y,z);
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iterVol.setVoxel(value);*/
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volumeData->setVoxelAt(x,y,z,value);
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}
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void VolumeChangeTracker::lockRegion(const Region& regToLock)
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{
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if(m_bIsLocked)
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{
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throw std::logic_error("A region is already locked. Please unlock it before locking another.");
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}
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m_regLastLocked = regToLock;
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m_bIsLocked = true;
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}
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void VolumeChangeTracker::unlockRegion(void)
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{
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++m_iCurrentTime;
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if(!m_bIsLocked)
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{
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throw std::logic_error("No region is locked. You must lock a region before you can unlock it.");
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}
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const uint16 firstRegionX = m_regLastLocked.getLowerCorner().getX() >> m_uRegionSideLengthPower;
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const uint16 firstRegionY = m_regLastLocked.getLowerCorner().getY() >> m_uRegionSideLengthPower;
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const uint16 firstRegionZ = m_regLastLocked.getLowerCorner().getZ() >> m_uRegionSideLengthPower;
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const uint16 lastRegionX = m_regLastLocked.getUpperCorner().getX() >> m_uRegionSideLengthPower;
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const uint16 lastRegionY = m_regLastLocked.getUpperCorner().getY() >> m_uRegionSideLengthPower;
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const uint16 lastRegionZ = m_regLastLocked.getUpperCorner().getZ() >> m_uRegionSideLengthPower;
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for(uint16 zCt = firstRegionZ; zCt <= lastRegionZ; zCt++)
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{
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for(uint16 yCt = firstRegionY; yCt <= lastRegionY; yCt++)
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{
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for(uint16 xCt = firstRegionX; xCt <= lastRegionX; xCt++)
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{
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volRegionLastModified->setVoxelAt(xCt,yCt,zCt,m_iCurrentTime);
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}
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}
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}
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//++m_iCurrentTime;
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m_bIsLocked = false;
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}
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}
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