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PolyVox and Thermite3D now support the use of a density component as well as a material component for each voxel.

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This commit is contained in:
David Williams
2010-06-25 21:41:13 +00:00
parent 29928b774d
commit 254fa3329e
24 changed files with 802 additions and 371 deletions
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259
library/PolyVoxUtil/source/Serialization.cpp
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@ -1,259 +0,0 @@
/*******************************************************************************
Copyright (c) 2005-2009 David Williams
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*******************************************************************************/
#include "Serialization.h"
#include "Volume.h"
#include "VolumeSampler.h"
#include "PolyVoxImpl/Utility.h"
using namespace std;
namespace PolyVox
{
//Note: we don't do much error handling in here - exceptions will simply be propergated up to the caller.
//FIXME - think about pointer ownership issues. Or could return volume by value if the copy constructor is shallow
shared_ptr< Volume<uint8_t> > loadVolumeRaw(istream& stream, VolumeSerializationProgressListener* progressListener)
{
//Read volume dimensions
uint8_t volumeWidthPower = 0;
uint8_t volumeHeightPower = 0;
uint8_t volumeDepthPower = 0;
stream.read(reinterpret_cast<char*>(&volumeWidthPower), sizeof(volumeWidthPower));
stream.read(reinterpret_cast<char*>(&volumeHeightPower), sizeof(volumeHeightPower));
stream.read(reinterpret_cast<char*>(&volumeDepthPower), sizeof(volumeDepthPower));
uint16_t volumeWidth = 0x0001 << volumeWidthPower;
uint16_t volumeHeight = 0x0001 << volumeHeightPower;
uint16_t volumeDepth = 0x0001 << volumeDepthPower;
//FIXME - need to support non cubic volumes
shared_ptr< Volume<uint8_t> > volume(new Volume<uint8_t>(volumeWidth, volumeHeight, volumeDepth));
//Read data
for(uint16_t z = 0; z < volumeDepth; ++z)
{
//Update progress once per slice.
if(progressListener)
{
float fProgress = static_cast<float>(z) / static_cast<float>(volumeDepth);
progressListener->onProgressUpdated(fProgress);
}
for(uint16_t y = 0; y < volumeHeight; ++y)
{
for(uint16_t x = 0; x < volumeWidth; ++x)
{
uint8_t value = 0;
stream.read(reinterpret_cast<char*>(&value), sizeof(value));
volume->setVoxelAt(x,y,z,value);
}
}
}
//Finished
if(progressListener)
{
progressListener->onProgressUpdated(1.0f);
}
return volume;
}
void saveVolumeRaw(std::ostream& stream, Volume<uint8_t>& volume, VolumeSerializationProgressListener* progressListener)
{
//Write volume dimensions
uint16_t volumeWidth = volume.getWidth();
uint16_t volumeHeight = volume.getHeight();
uint16_t volumeDepth = volume.getDepth();
uint8_t volumeWidthPower = logBase2(volumeWidth);
uint8_t volumeHeightPower = logBase2(volumeHeight);
uint8_t volumeDepthPower = logBase2(volumeDepth);
stream.write(reinterpret_cast<char*>(&volumeWidthPower), sizeof(volumeWidthPower));
stream.write(reinterpret_cast<char*>(&volumeHeightPower), sizeof(volumeHeightPower));
stream.write(reinterpret_cast<char*>(&volumeDepthPower), sizeof(volumeDepthPower));
//Write data
VolumeSampler<uint8_t> volIter(&volume);
for(uint16_t z = 0; z < volumeDepth; ++z)
{
//Update progress once per slice.
if(progressListener)
{
float fProgress = static_cast<float>(z) / static_cast<float>(volumeDepth);
progressListener->onProgressUpdated(fProgress);
}
for(uint16_t y = 0; y < volumeHeight; ++y)
{
for(uint16_t x = 0; x < volumeWidth; ++x)
{
volIter.setPosition(x,y,z);
uint8_t value = volIter.getVoxel();
stream.write(reinterpret_cast<char*>(&value), sizeof(value));
}
}
}
//Finished
if(progressListener)
{
progressListener->onProgressUpdated(1.0f);
}
}
//Note: we don't do much error handling in here - exceptions will simply be propergated up to the caller.
//FIXME - think about pointer ownership issues. Or could return volume by value if the copy constructor is shallow
shared_ptr< Volume<uint8_t> > loadVolumeRle(istream& stream, VolumeSerializationProgressListener* progressListener)
{
//Read volume dimensions
uint8_t volumeWidthPower = 0;
uint8_t volumeHeightPower = 0;
uint8_t volumeDepthPower = 0;
stream.read(reinterpret_cast<char*>(&volumeWidthPower), sizeof(volumeWidthPower));
stream.read(reinterpret_cast<char*>(&volumeHeightPower), sizeof(volumeHeightPower));
stream.read(reinterpret_cast<char*>(&volumeDepthPower), sizeof(volumeDepthPower));
uint16_t volumeWidth = 0x0001 << volumeWidthPower;
uint16_t volumeHeight = 0x0001 << volumeHeightPower;
uint16_t volumeDepth = 0x0001 << volumeDepthPower;
//FIXME - need to support non cubic volumes
shared_ptr< Volume<uint8_t> > volume(new Volume<uint8_t>(volumeWidth, volumeHeight, volumeDepth));
//Read data
bool firstTime = true;
uint32_t runLength = 0;
uint8_t value = 0;
stream.read(reinterpret_cast<char*>(&value), sizeof(value));
stream.read(reinterpret_cast<char*>(&runLength), sizeof(runLength));
for(uint16_t z = 0; z < volumeDepth; ++z)
{
//Update progress once per slice.
if(progressListener)
{
float fProgress = static_cast<float>(z) / static_cast<float>(volumeDepth);
progressListener->onProgressUpdated(fProgress);
}
for(uint16_t y = 0; y < volumeHeight; ++y)
{
for(uint16_t x = 0; x < volumeWidth; ++x)
{
if(runLength != 0)
{
volume->setVoxelAt(x,y,z,value);
runLength--;
}
else
{
stream.read(reinterpret_cast<char*>(&value), sizeof(value));
stream.read(reinterpret_cast<char*>(&runLength), sizeof(runLength));
volume->setVoxelAt(x,y,z,value);
runLength--;
}
}
}
}
//Finished
if(progressListener)
{
progressListener->onProgressUpdated(1.0f);
}
return volume;
}
void saveVolumeRle(std::ostream& stream, Volume<uint8_t>& volume, VolumeSerializationProgressListener* progressListener)
{
//Write volume dimensions
uint16_t volumeWidth = volume.getWidth();
uint16_t volumeHeight = volume.getHeight();
uint16_t volumeDepth = volume.getDepth();
uint8_t volumeWidthPower = logBase2(volumeWidth);
uint8_t volumeHeightPower = logBase2(volumeHeight);
uint8_t volumeDepthPower = logBase2(volumeDepth);
stream.write(reinterpret_cast<char*>(&volumeWidthPower), sizeof(volumeWidthPower));
stream.write(reinterpret_cast<char*>(&volumeHeightPower), sizeof(volumeHeightPower));
stream.write(reinterpret_cast<char*>(&volumeDepthPower), sizeof(volumeDepthPower));
//Write data
VolumeSampler<uint8_t> volIter(&volume);
uint8_t current = 0;
uint32_t runLength = 0;
bool firstTime = true;
for(uint16_t z = 0; z < volumeDepth; ++z)
{
//Update progress once per slice.
if(progressListener)
{
float fProgress = static_cast<float>(z) / static_cast<float>(volumeDepth);
progressListener->onProgressUpdated(fProgress);
}
for(uint16_t y = 0; y < volumeHeight; ++y)
{
for(uint16_t x = 0; x < volumeWidth; ++x)
{
volIter.setPosition(x,y,z);
uint8_t value = volIter.getVoxel();
if(firstTime)
{
current = value;
runLength = 1;
firstTime = false;
}
else
{
if(value == current)
{
runLength++;
}
else
{
stream.write(reinterpret_cast<char*>(&current), sizeof(current));
stream.write(reinterpret_cast<char*>(&runLength), sizeof(runLength));
current = value;
runLength = 1;
}
}
}
}
}
stream.write(reinterpret_cast<char*>(&current), sizeof(current));
stream.write(reinterpret_cast<char*>(&runLength), sizeof(runLength));
//Finished
if(progressListener)
{
progressListener->onProgressUpdated(1.0f);
}
}
}

215
library/PolyVoxUtil/source/VolumeChangeTracker.cpp
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@ -1,215 +0,0 @@
#pragma region License
/*******************************************************************************
Copyright (c) 2005-2009 David Williams
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*******************************************************************************/
#pragma endregion
#include "VolumeChangeTracker.h"
#include "GradientEstimators.h"
#include "SurfaceMesh.h"
#include "PolyVoxImpl/MarchingCubesTables.h"
#include "SurfaceVertex.h"
#include "PolyVoxImpl/Utility.h"
#include "Vector.h"
#include "Volume.h"
#include "VolumeSampler.h"
using namespace std;
namespace PolyVox
{
uint32_t VolumeChangeTracker::m_uCurrentTime = 0;
//////////////////////////////////////////////////////////////////////////
// VolumeChangeTracker
//////////////////////////////////////////////////////////////////////////
VolumeChangeTracker::VolumeChangeTracker(Volume<uint8_t>* volumeDataToSet, uint16_t regionSideLength)
:m_bIsLocked(false)
,volumeData(0)
,m_uRegionSideLength(regionSideLength)
{
volumeData = volumeDataToSet;
m_uVolumeWidthInRegions = volumeData->getWidth() / m_uRegionSideLength;
m_uVolumeHeightInRegions = volumeData->getHeight() / m_uRegionSideLength;
m_uVolumeDepthInRegions = volumeData->getDepth() / m_uRegionSideLength;
m_uRegionSideLengthPower = PolyVox::logBase2(m_uRegionSideLength);
volRegionLastModified = new Volume<int32_t>(m_uVolumeWidthInRegions, m_uVolumeHeightInRegions, m_uVolumeDepthInRegions, 0);
}
VolumeChangeTracker::~VolumeChangeTracker()
{
}
void VolumeChangeTracker::setAllRegionsModified(void)
{
incrementCurrentTime();
for(uint16_t blockZ = 0; blockZ < m_uVolumeDepthInRegions; ++blockZ)
{
for(uint16_t blockY = 0; blockY < m_uVolumeHeightInRegions; ++blockY)
{
for(uint16_t blockX = 0; blockX < m_uVolumeWidthInRegions; ++blockX)
{
volRegionLastModified->setVoxelAt(blockX, blockY, blockZ, m_uCurrentTime);
}
}
}
}
int32_t VolumeChangeTracker::getCurrentTime(void) const
{
return m_uCurrentTime;
}
int32_t VolumeChangeTracker::getLastModifiedTimeForRegion(uint16_t uX, uint16_t uY, uint16_t uZ)
{
return volRegionLastModified->getVoxelAt(uX, uY, uZ);
}
Volume<uint8_t>* VolumeChangeTracker::getWrappedVolume(void) const
{
return volumeData;
}
void VolumeChangeTracker::setVoxelAt(uint16_t x, uint16_t y, uint16_t z, uint8_t value)
{
//Note: We increase the time stamp both at the start and the end
//to avoid ambiguity about whether the timestamp comparison should
//be '<' vs '<=' or '>' vs '>=' in the users code.
incrementCurrentTime();
volumeData->setVoxelAt(x,y,z,value);
//If we are not on a boundary, just mark one region.
if((x % m_uRegionSideLength != 0) &&
(x % m_uRegionSideLength != m_uRegionSideLength-1) &&
(y % m_uRegionSideLength != 0) &&
(y % m_uRegionSideLength != m_uRegionSideLength-1) &&
(z % m_uRegionSideLength != 0) &&
(z % m_uRegionSideLength != m_uRegionSideLength-1))
{
volRegionLastModified->setVoxelAt(x >> m_uRegionSideLengthPower, y >> m_uRegionSideLengthPower, z >> m_uRegionSideLengthPower, m_uCurrentTime);
}
else //Mark surrounding regions as well
{
const uint16_t regionX = x >> m_uRegionSideLengthPower;
const uint16_t regionY = y >> m_uRegionSideLengthPower;
const uint16_t regionZ = z >> m_uRegionSideLengthPower;
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(m_uVolumeWidthInRegions-1),uint16_t(regionX+1));
const uint16_t maxRegionY = (std::min)(uint16_t(m_uVolumeHeightInRegions-1),uint16_t(regionY+1));
const uint16_t maxRegionZ = (std::min)(uint16_t(m_uVolumeDepthInRegions-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++)
{
volRegionLastModified->setVoxelAt(xCt,yCt,zCt,m_uCurrentTime);
}
}
}
}
//Increment time stamp. See earlier note.
incrementCurrentTime();
}
void VolumeChangeTracker::setLockedVoxelAt(uint16_t x, uint16_t y, uint16_t z, uint8_t value)
{
assert(m_bIsLocked);
//FIXME - rather than creating a iterator each time we should have one stored
/*VolumeSampler<uint8_t> iterVol(*volumeData);
iterVol.setPosition(x,y,z);
iterVol.setVoxel(value);*/
volumeData->setVoxelAt(x,y,z,value);
}
void VolumeChangeTracker::lockRegion(const Region& regToLock)
{
if(m_bIsLocked)
{
throw std::logic_error("A region is already locked. Please unlock it before locking another.");
}
m_regLastLocked = regToLock;
m_bIsLocked = true;
}
void VolumeChangeTracker::unlockRegion(void)
{
if(!m_bIsLocked)
{
throw std::logic_error("No region is locked. You must lock a region before you can unlock it.");
}
//Note: We increase the time stamp both at the start and the end
//to avoid ambiguity about whether the timestamp comparison should
//be '<' vs '<=' or '>' vs '>=' in the users code.
incrementCurrentTime();
const uint16_t firstRegionX = m_regLastLocked.getLowerCorner().getX() >> m_uRegionSideLengthPower;
const uint16_t firstRegionY = m_regLastLocked.getLowerCorner().getY() >> m_uRegionSideLengthPower;
const uint16_t firstRegionZ = m_regLastLocked.getLowerCorner().getZ() >> m_uRegionSideLengthPower;
const uint16_t lastRegionX = m_regLastLocked.getUpperCorner().getX() >> m_uRegionSideLengthPower;
const uint16_t lastRegionY = m_regLastLocked.getUpperCorner().getY() >> m_uRegionSideLengthPower;
const uint16_t lastRegionZ = m_regLastLocked.getUpperCorner().getZ() >> m_uRegionSideLengthPower;
for(uint16_t zCt = firstRegionZ; zCt <= lastRegionZ; zCt++)
{
for(uint16_t yCt = firstRegionY; yCt <= lastRegionY; yCt++)
{
for(uint16_t xCt = firstRegionX; xCt <= lastRegionX; xCt++)
{
volRegionLastModified->setVoxelAt(xCt,yCt,zCt,m_uCurrentTime);
}
}
}
m_bIsLocked = false;
//Increment time stamp. See earlier note.
incrementCurrentTime();
}
void VolumeChangeTracker::incrementCurrentTime(void)
{
//Increment the current time.
uint32_t time = m_uCurrentTime++;
//Watch out for wraparound. Hopefully this will never happen
//as we have a pretty big counter, but it's best to be sure...
assert(time < m_uCurrentTime);
if(time >= m_uCurrentTime)
{
throw std::overflow_error("The VolumeChangeTracker time has overflowed.");
}
}
}