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Restructuring code.

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This commit is contained in:
David Williams 2015-05-14 11:48:28 +02:00
parent f53efa1d64
commit 89508f8b2b
2 changed files with 7 additions and 39 deletions
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5
include/PolyVox/MarchingCubesSurfaceExtractor.h
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@ -160,10 +160,7 @@ namespace PolyVox
private:
//Compute the cell bitmask for a particular slice in z.
template<bool isPrevZAvail>
void computeBitmaskForSlice(Array3DUint8& pBitmask);
//Use the cell bitmasks to generate all the vertices needed for that slice
void generateVerticesForSlice(const Array3DUint8& pBitmask,
void computeBitmaskForSlice(Array3DUint8& pBitmask,
Array3DInt32& pIndicesX,
Array3DInt32& pIndicesY,
Array3DInt32& pIndicesZ);

41
include/PolyVox/MarchingCubesSurfaceExtractor.inl
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@ -68,9 +68,7 @@ namespace PolyVox
m_regSlicePrevious.setUpperCorner(v3dUpperCorner);
m_regSliceCurrent = m_regSlicePrevious;
computeBitmaskForSlice<true>(pBitmask);
generateVerticesForSlice(pBitmask, pIndicesX, pIndicesY, pIndicesZ);
computeBitmaskForSlice<true>(pBitmask, pIndicesX, pIndicesY, pIndicesZ);
m_regSlicePrevious = m_regSliceCurrent;
m_regSliceCurrent.shift(Vector3DInt32(0,0,1));
@ -93,7 +91,10 @@ namespace PolyVox
template<typename VolumeType, typename MeshType, typename ControllerType>
template<bool isPrevZAvail>
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForSlice(Array3DUint8& pBitmask)
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::computeBitmaskForSlice(Array3DUint8& pBitmask,
Array3DInt32& pIndicesX,
Array3DInt32& pIndicesY,
Array3DInt32& pIndicesZ)
{
const int32_t iMaxXVolSpace = m_regSizeInVoxels.getUpperX();
const int32_t iMaxYVolSpace = m_regSizeInVoxels.getUpperY();
@ -149,32 +150,6 @@ namespace PolyVox
//Save the bitmask
pBitmask(uXRegSpace, uYRegSpace, uZRegSpace) = iCubeIndex;
}
}
}
}
template<typename VolumeType, typename MeshType, typename ControllerType>
void MarchingCubesSurfaceExtractor<VolumeType, MeshType, ControllerType>::generateVerticesForSlice(const Array3DUint8& pBitmask,
Array3DInt32& pIndicesX,
Array3DInt32& pIndicesY,
Array3DInt32& pIndicesZ)
{
for (int32_t iZVolSpace = m_regSliceCurrent.getLowerZ(); iZVolSpace <= m_regSizeInVoxels.getUpperZ(); iZVolSpace++)
{
uint32_t uZRegSpace = iZVolSpace - m_regSizeInVoxels.getLowerZ();
for (int32_t iYVolSpace = m_regSliceCurrent.getLowerY(); iYVolSpace <= m_regSizeInVoxels.getUpperY(); iYVolSpace++)
{
const uint32_t uYRegSpace = iYVolSpace - m_regSizeInVoxels.getLowerY();
for (int32_t iXVolSpace = m_regSliceCurrent.getLowerX(); iXVolSpace <= m_regSizeInVoxels.getUpperX(); iXVolSpace++)
{
//Current position
const uint32_t uXRegSpace = iXVolSpace - m_regSizeInVoxels.getLowerX();
//Determine the index into the edge table which tells us which vertices are inside of the surface
const uint8_t iCubeIndex = pBitmask(uXRegSpace, uYRegSpace, uZRegSpace);
/* Cube is entirely in/out of the surface */
if (edgeTable[iCubeIndex] == 0)
@ -186,14 +161,12 @@ namespace PolyVox
m_sampVolume.setPosition(iXVolSpace, iYVolSpace, iZVolSpace);
const typename VolumeType::VoxelType v000 = m_sampVolume.getVoxel();
const Vector3DFloat n000 = computeCentralDifferenceGradient(m_sampVolume);
/* Find the vertices where the surface intersects the cube */
if (edgeTable[iCubeIndex] & 1)
{
m_sampVolume.movePositiveX();
const typename VolumeType::VoxelType v100 = m_sampVolume.getVoxel();
POLYVOX_ASSERT(v000 != v100, "Attempting to insert vertex between two voxels with the same value");
const Vector3DFloat n100 = computeCentralDifferenceGradient(m_sampVolume);
@ -227,7 +200,6 @@ namespace PolyVox
if (edgeTable[iCubeIndex] & 8)
{
m_sampVolume.movePositiveY();
const typename VolumeType::VoxelType v010 = m_sampVolume.getVoxel();
POLYVOX_ASSERT(v000 != v010, "Attempting to insert vertex between two voxels with the same value");
const Vector3DFloat n010 = computeCentralDifferenceGradient(m_sampVolume);
@ -261,7 +233,6 @@ namespace PolyVox
if (edgeTable[iCubeIndex] & 256)
{
m_sampVolume.movePositiveZ();
const typename VolumeType::VoxelType v001 = m_sampVolume.getVoxel();
POLYVOX_ASSERT(v000 != v001, "Attempting to insert vertex between two voxels with the same value");
const Vector3DFloat n001 = computeCentralDifferenceGradient(m_sampVolume);
@ -291,7 +262,7 @@ namespace PolyVox
m_sampVolume.moveNegativeZ();
}
}//For each cell
}
}
}
}