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Making use of sampling adjacent voxels. General optimisations and improvements.

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This commit is contained in:
David Williams
2009-06-06 23:08:08 +00:00
parent 41e33b1f59
commit 3010eb341d
7 changed files with 174 additions and 188 deletions
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37
library/PolyVoxCore/source/SurfaceExtractor.cpp
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@ -9,7 +9,7 @@ namespace PolyVox
SurfaceExtractor::SurfaceExtractor(Volume<uint8_t>& volData)
:m_uLodLevel(0)
,m_volData(volData)
,m_sampVolume(volData)
,m_sampVolume(&volData)
{
}
@ -184,35 +184,62 @@ namespace PolyVox
//Process the edge where x is minimal.
uXVolSpace = m_regSliceCurrent.getLowerCorner().getX();
m_sampVolume.setPosition(uXVolSpace, m_regSliceCurrent.getLowerCorner().getY(), uZVolSpace);
for(uYVolSpace = m_regSliceCurrent.getLowerCorner().getY() + m_uStepSize; uYVolSpace <= uMaxYVolSpace; uYVolSpace += m_uStepSize)
{
uXRegSpace = uXVolSpace - m_regInputCropped.getLowerCorner().getX();
uYRegSpace = uYVolSpace - m_regInputCropped.getLowerCorner().getY();
m_sampVolume.setPosition(uXVolSpace,uYVolSpace,uZVolSpace);
if(uLodLevel == 0)
{
m_sampVolume.movePositiveY();
}
else
{
m_sampVolume.setPosition(uXVolSpace, uYVolSpace, uZVolSpace);
}
computeBitmaskForCell<false, true, isPrevZAvail, uLodLevel>();
}
//Process the edge where y is minimal.
uYVolSpace = m_regSliceCurrent.getLowerCorner().getY();
m_sampVolume.setPosition(m_regSliceCurrent.getLowerCorner().getX(), uYVolSpace, uZVolSpace);
for(uXVolSpace = m_regSliceCurrent.getLowerCorner().getX() + m_uStepSize; uXVolSpace <= uMaxXVolSpace; uXVolSpace += m_uStepSize)
{
uXRegSpace = uXVolSpace - m_regInputCropped.getLowerCorner().getX();
uYRegSpace = uYVolSpace - m_regInputCropped.getLowerCorner().getY();
m_sampVolume.setPosition(uXVolSpace,uYVolSpace,uZVolSpace);
if(uLodLevel == 0)
{
m_sampVolume.movePositiveX();
}
else
{
m_sampVolume.setPosition(uXVolSpace, uYVolSpace, uZVolSpace);
}
computeBitmaskForCell<true, false, isPrevZAvail, uLodLevel>();
}
//Process all remaining elemnents of the slice. In this case, previous x and y values are always available
for(uYVolSpace = m_regSliceCurrent.getLowerCorner().getY() + m_uStepSize; uYVolSpace <= uMaxYVolSpace; uYVolSpace += m_uStepSize)
{
m_sampVolume.setPosition(m_regSliceCurrent.getLowerCorner().getX(), uYVolSpace, uZVolSpace);
for(uXVolSpace = m_regSliceCurrent.getLowerCorner().getX() + m_uStepSize; uXVolSpace <= uMaxXVolSpace; uXVolSpace += m_uStepSize)
{
uXRegSpace = uXVolSpace - m_regInputCropped.getLowerCorner().getX();
uYRegSpace = uYVolSpace - m_regInputCropped.getLowerCorner().getY();
m_sampVolume.setPosition(uXVolSpace,uYVolSpace,uZVolSpace);
if(uLodLevel == 0)
{
m_sampVolume.movePositiveX();
}
else
{
m_sampVolume.setPosition(uXVolSpace, uYVolSpace, uZVolSpace);
}
computeBitmaskForCell<true, true, isPrevZAvail, uLodLevel>();
}
}
@ -274,7 +301,6 @@ namespace PolyVox
{
v011 = m_sampVolume.peekVoxel0px1py1pz();
v111 = m_sampVolume.peekVoxel1px1py1pz();
}
else
{
@ -307,7 +333,6 @@ namespace PolyVox
{
v101 = m_sampVolume.peekVoxel1px0py1pz();
v111 = m_sampVolume.peekVoxel1px1py1pz();
}
else
{