212 lines
7.4 KiB
C++
212 lines
7.4 KiB
C++
#pragma region License
|
|
/******************************************************************************
|
|
This file is part of the PolyVox library
|
|
Copyright (C) 2006 David Williams
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
******************************************************************************/
|
|
#pragma endregion
|
|
|
|
#include "VolumeChangeTracker.h"
|
|
|
|
#include "GradientEstimators.h"
|
|
#include "IndexedSurfacePatch.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)
|
|
{
|
|
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);
|
|
incrementCurrentTime();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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.");
|
|
}
|
|
}
|
|
}
|