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Fix for duplicate vertices in CubicSurfaceExtractor.

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This commit is contained in:
David Williams 2011-04-13 21:09:51 +01:00
parent d9719cbd36
commit f302e3612a
1 changed files with 52 additions and 40 deletions
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12
library/PolyVoxCore/include/CubicSurfaceExtractor.inl
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@ -47,12 +47,14 @@ namespace PolyVox
{
uint32_t uArrayWidth = m_regSizeInVoxels.getUpperCorner().getX() - m_regSizeInVoxels.getLowerCorner().getX() + 2;
uint32_t uArrayHeight = m_regSizeInVoxels.getUpperCorner().getY() - m_regSizeInVoxels.getLowerCorner().getY() + 2;
uint32_t arraySize[3]= {uArrayWidth, uArrayHeight, MaxQuadsSharingVertex};
m_previousSliceVertices.resize(arraySize);
m_currentSliceVertices.resize(arraySize);
memset(m_previousSliceVertices.getRawData(), 0xff, m_previousSliceVertices.getNoOfElements() * sizeof(IndexAndMaterial));
memset(m_currentSliceVertices.getRawData(), 0xff, m_currentSliceVertices.getNoOfElements() * sizeof(IndexAndMaterial));
for(int32_t z = m_regSizeInVoxels.getLowerCorner().getZ(); z <= m_regSizeInVoxels.getUpperCorner().getZ() + 1; z++)
{
for(int32_t y = m_regSizeInVoxels.getLowerCorner().getY(); y <= m_regSizeInVoxels.getUpperCorner().getY() + 1; y++)
@ -83,6 +85,9 @@ namespace PolyVox
uint32_t v2 = m_meshCurrent->addVertex(PositionMaterial(Vector3DFloat(regX - 0.5f, regY + 0.5f, regZ - 0.5f), material));
uint32_t v3 = m_meshCurrent->addVertex(PositionMaterial(Vector3DFloat(regX - 0.5f, regY + 0.5f, regZ + 0.5f), material));*/
// Check to ensure that when a voxel solid/non-solid change is right on a region border, the vertices are generated on the solid side of the region border
if(((currentVoxelIsSolid > negXVoxelIsSolid) && finalX == false) || ((currentVoxelIsSolid < negXVoxelIsSolid) && regX != 0))
{
uint32_t v0 = addVertex(regX - 0.5f, regY - 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
uint32_t v1 = addVertex(regX - 0.5f, regY - 0.5f, regZ + 0.5f, material, m_currentSliceVertices);
uint32_t v2 = addVertex(regX - 0.5f, regY + 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
@ -99,6 +104,7 @@ namespace PolyVox
m_meshCurrent->addTriangleCubic(v1,v2,v3);
}
}
}
VoxelType negYVoxel = m_volData->getVoxelAt(x,y-1,z);
bool negYVoxelIsSolid = negYVoxel.getDensity() >= VoxelType::getThreshold();
@ -107,6 +113,8 @@ namespace PolyVox
{
int material = (std::max)(currentVoxel.getMaterial(),negYVoxel.getMaterial());
if(((currentVoxelIsSolid > negYVoxelIsSolid) && finalY == false) || ((currentVoxelIsSolid < negYVoxelIsSolid) && regY != 0))
{
uint32_t v0 = addVertex(regX - 0.5f, regY - 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
uint32_t v1 = addVertex(regX - 0.5f, regY - 0.5f, regZ + 0.5f, material, m_currentSliceVertices);
uint32_t v2 = addVertex(regX + 0.5f, regY - 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
@ -123,6 +131,7 @@ namespace PolyVox
m_meshCurrent->addTriangleCubic(v1,v3,v2);
}
}
}
VoxelType negZVoxel = m_volData->getVoxelAt(x,y,z-1);
bool negZVoxelIsSolid = negZVoxel.getDensity() >= VoxelType::getThreshold();
@ -131,6 +140,8 @@ namespace PolyVox
{
int material = (std::max)(currentVoxel.getMaterial(), negZVoxel.getMaterial());
if(((currentVoxelIsSolid > negZVoxelIsSolid) && finalZ == false) || ((currentVoxelIsSolid < negZVoxelIsSolid) && regZ != 0))
{
uint32_t v0 = addVertex(regX - 0.5f, regY - 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
uint32_t v1 = addVertex(regX - 0.5f, regY + 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
uint32_t v2 = addVertex(regX + 0.5f, regY - 0.5f, regZ - 0.5f, material, m_previousSliceVertices);
@ -149,6 +160,7 @@ namespace PolyVox
}
}
}
}
m_previousSliceVertices.swap(m_currentSliceVertices);
memset(m_currentSliceVertices.getRawData(), 0xff, m_currentSliceVertices.getNoOfElements() * sizeof(IndexAndMaterial));