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polyvox/library/PolyVoxCore/include/VolumeSampler.inl
David Williams 5a99101341 Optimising SurfaceExtractor.
2009-06-02 22:51:00 +00:00

505 lines
18 KiB
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#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
#pragma region Headers
#include "PolyVoxImpl/Block.h"
#include "Volume.h"
#include "Vector.h"
#include "Region.h"
#include <limits>
#pragma endregion
namespace PolyVox
{
#pragma region Constructors/Destructors
template <typename VoxelType>
VolumeSampler<VoxelType>::VolumeSampler(Volume<VoxelType>& volume)
:mVolume(volume)
{
}
template <typename VoxelType>
VolumeSampler<VoxelType>::~VolumeSampler()
{
}
#pragma endregion
#pragma region Operators
template <typename VoxelType>
bool VolumeSampler<VoxelType>::operator==(const VolumeSampler<VoxelType>& rhs)
{
//We could just check whether the two mCurrentVoxel pointers are equal, but this may not
//be safe in the future if we decide to allow blocks to be shared between volumes
//So we really check whether the positions are the same.
//NOTE: With all iterator comparisons it is the users job to ensure they at least point
//to the same volume. Otherwise they are not comparible.
assert(&mVolume == &rhs.mVolume);
return
(
(mXPosInVolume == rhs.mXPosInVolume) &&
(mYPosInVolume == rhs.mYPosInVolume) &&
(mZPosInVolume == rhs.mZPosInVolume)
);
}
template <typename VoxelType>
bool VolumeSampler<VoxelType>::operator<(const VolumeSampler<VoxelType>& rhs)
{
assert(&mVolume == &rhs.mVolume);
if(mZPosInVolume < rhs.mZPosInVolume)
return true;
if(mZPosInVolume > rhs.mZPosInVolume)
return false;
if(mYPosInVolume < rhs.mYPosInVolume)
return true;
if(mYPosInVolume > rhs.mYPosInVolume)
return false;
if(mXPosInVolume < rhs.mXPosInVolume)
return true;
if(mXPosInVolume > rhs.mXPosInVolume)
return false;
return false;
}
template <typename VoxelType>
bool VolumeSampler<VoxelType>::operator>(const VolumeSampler<VoxelType>& rhs)
{
assert(&mVolume == &rhs.mVolume);
return (rhs < *this);
}
template <typename VoxelType>
bool VolumeSampler<VoxelType>::operator<=(const VolumeSampler<VoxelType>& rhs)
{
assert(&mVolume == &rhs.mVolume);
return (rhs > *this);
}
template <typename VoxelType>
bool VolumeSampler<VoxelType>::operator>=(const VolumeSampler<VoxelType>& rhs)
{
assert(&mVolume == &rhs.mVolume);
return (rhs < *this);
}
#pragma endregion
#pragma region Getters
template <typename VoxelType>
uint16_t VolumeSampler<VoxelType>::getPosX(void) const
{
return mXPosInVolume;
}
template <typename VoxelType>
uint16_t VolumeSampler<VoxelType>::getPosY(void) const
{
return mYPosInVolume;
}
template <typename VoxelType>
uint16_t VolumeSampler<VoxelType>::getPosZ(void) const
{
return mZPosInVolume;
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::getSubSampledVoxel(uint8_t uLevel) const
{
if(uLevel == 0)
{
return getVoxel();
}
else if(uLevel == 1)
{
VoxelType tValue = getVoxel();
tValue = (std::min)(tValue, peekVoxel1px0py0pz());
tValue = (std::min)(tValue, peekVoxel0px1py0pz());
tValue = (std::min)(tValue, peekVoxel1px1py0pz());
tValue = (std::min)(tValue, peekVoxel0px0py1pz());
tValue = (std::min)(tValue, peekVoxel1px0py1pz());
tValue = (std::min)(tValue, peekVoxel0px1py1pz());
tValue = (std::min)(tValue, peekVoxel1px1py1pz());
return tValue;
}
else
{
const uint8_t uSize = 1 << uLevel;
VoxelType tValue = (std::numeric_limits<VoxelType>::max)();
for(uint8_t z = 0; z < uSize; ++z)
{
for(uint8_t y = 0; y < uSize; ++y)
{
for(uint8_t x = 0; x < uSize; ++x)
{
tValue = (std::min)(tValue, mVolume.getVoxelAt(mXPosInVolume + x, mYPosInVolume + y, mZPosInVolume + z));
}
}
}
return tValue;
}
}
template <typename VoxelType>
const Volume<VoxelType>& VolumeSampler<VoxelType>::getVolume(void) const
{
return mVolume;
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::getVoxel(void) const
{
return *mCurrentVoxel;
}
#pragma endregion
#pragma region Setters
template <typename VoxelType>
void VolumeSampler<VoxelType>::setPosition(const Vector3DInt16& v3dNewPos)
{
setPosition(v3dNewPos.getX(), v3dNewPos.getY(), v3dNewPos.getZ());
}
template <typename VoxelType>
void VolumeSampler<VoxelType>::setPosition(uint16_t xPos, uint16_t yPos, uint16_t zPos)
{
mXPosInVolume = xPos;
mYPosInVolume = yPos;
mZPosInVolume = zPos;
mXBlock = mXPosInVolume >> mVolume.m_uBlockSideLengthPower;
mYBlock = mYPosInVolume >> mVolume.m_uBlockSideLengthPower;
mZBlock = mZPosInVolume >> mVolume.m_uBlockSideLengthPower;
mXPosInBlock = mXPosInVolume - (mXBlock << mVolume.m_uBlockSideLengthPower);
mYPosInBlock = mYPosInVolume - (mYBlock << mVolume.m_uBlockSideLengthPower);
mZPosInBlock = mZPosInVolume - (mZBlock << mVolume.m_uBlockSideLengthPower);
mBlockIndexInVolume = mXBlock +
mYBlock * mVolume.m_uWidthInBlocks +
mZBlock * mVolume.m_uWidthInBlocks * mVolume.m_uHeightInBlocks;
POLYVOX_SHARED_PTR< Block<VoxelType> > currentBlock = mVolume.m_pBlocks[mBlockIndexInVolume];
mVoxelIndexInBlock = mXPosInBlock +
mYPosInBlock * mVolume.m_uBlockSideLength +
mZPosInBlock * mVolume.m_uBlockSideLength * mVolume.m_uBlockSideLength;
mCurrentVoxel = currentBlock->m_tData + mVoxelIndexInBlock;
}
#pragma endregion
#pragma region Other
template <typename VoxelType>
void VolumeSampler<VoxelType>::movePositiveX(void)
{
++mXPosInVolume;
if(mXPosInVolume % mVolume.m_uBlockSideLength == 0)
{
//We've hit the block boundary. Just calling setPosition() is the easiest way to resolve this.
setPosition(mXPosInVolume, mYPosInVolume, mZPosInVolume);
}
else
{
//No need to compute new block.
++mVoxelIndexInBlock;
++mCurrentVoxel;
}
}
#pragma endregion
#pragma region Peekers
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1ny1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - 1 - mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume-1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1ny0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - 1 - mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume-1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1ny1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel - 1 - mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume-1,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx0py1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - 1 - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx0py0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - 1);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx0py1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel - 1 + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1py1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - 1 + mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume+1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1py0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel - 1 + mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume+1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1nx1py1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != 0) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel - 1 + mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume-1,mYPosInVolume+1,mZPosInVolume+1);
}
//////////////////////////////////////////////////////////////////////////
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1ny1nz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume-1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1ny0pz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume-1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1ny1pz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel - mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume-1,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px0py1nz(void) const
{
if((mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px0py0pz(void) const
{
return *mCurrentVoxel;
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px0py1pz(void) const
{
if((mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1py1nz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel + mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume+1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1py0pz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume+1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel0px1py1pz(void) const
{
if((mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume,mYPosInVolume+1,mZPosInVolume+1);
}
//////////////////////////////////////////////////////////////////////////
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1ny1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel + 1 - mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume-1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1ny0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel + 1 - mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume-1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1ny1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != 0) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + 1 - mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume-1,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px0py1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel + 1 - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px0py0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + 1);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px0py1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + 1 + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume,mZPosInVolume+1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1py1nz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != 0))
{
return *(mCurrentVoxel + 1 + mVolume.m_uBlockSideLength - mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume+1,mZPosInVolume-1);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1py0pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + 1 + mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume+1,mZPosInVolume);
}
template <typename VoxelType>
VoxelType VolumeSampler<VoxelType>::peekVoxel1px1py1pz(void) const
{
if((mXPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mYPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1) && (mZPosInVolume%mVolume.m_uBlockSideLength != mVolume.m_uBlockSideLength-1))
{
return *(mCurrentVoxel + 1 + mVolume.m_uBlockSideLength + mVolume.m_uBlockSideLength*mVolume.m_uBlockSideLength);
}
return mVolume.getVoxelAt(mXPosInVolume+1,mYPosInVolume+1,mZPosInVolume+1);
}
#pragma endregion
}
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