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Restructuring code.

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This commit is contained in:
David Williams 2015-05-14 22:10:37 +02:00
parent 89508f8b2b
commit 71adc7292c
2 changed files with 84 additions and 106 deletions
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2
include/PolyVox/MarchingCubesSurfaceExtractor.h
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@ -295,8 +295,6 @@ namespace PolyVox
//Information about the region we are currently processing
Region m_regSizeInVoxels;
Region m_regSizeInCells;
Region m_regSlicePrevious;
Region m_regSliceCurrent;
//Used to convert arbitrary voxel types in densities and materials.
ControllerType m_controller;

188
include/PolyVox/MarchingCubesSurfaceExtractor.inl
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@ -61,26 +61,9 @@ namespace PolyVox
Array3DUint8 pBitmask(uArrayWidth, uArrayHeight, uArrayDepth);
//Create a region corresponding to the first slice
m_regSlicePrevious = m_regSizeInVoxels;
Vector3DInt32 v3dUpperCorner = m_regSlicePrevious.getUpperCorner();
v3dUpperCorner.setZ(m_regSlicePrevious.getLowerZ()); //Set the upper z to the lower z to make it one slice thick.
m_regSlicePrevious.setUpperCorner(v3dUpperCorner);
m_regSliceCurrent = m_regSlicePrevious;
computeBitmaskForSlice<true>(pBitmask, pIndicesX, pIndicesY, pIndicesZ);
m_regSlicePrevious = m_regSliceCurrent;
m_regSliceCurrent.shift(Vector3DInt32(0,0,1));
//Process the other slices (previous slice is available)
for(int32_t uSlice = 1; uSlice <= m_regSizeInVoxels.getUpperZ() - m_regSizeInVoxels.getLowerZ(); uSlice++)
{
generateIndicesForSlice(pBitmask, pIndicesX, pIndicesY, pIndicesZ);
m_regSlicePrevious = m_regSliceCurrent;
m_regSliceCurrent.shift(Vector3DInt32(0,0,1));
}
generateIndicesForSlice(pBitmask, pIndicesX, pIndicesY, pIndicesZ);
m_meshCurrent->setOffset(m_regSizeInVoxels.getLowerCorner());
@ -100,15 +83,15 @@ namespace PolyVox
const int32_t iMaxYVolSpace = m_regSizeInVoxels.getUpperY();
const int32_t iMaxZVolSpace = m_regSizeInVoxels.getUpperZ();
for (int32_t iZVolSpace = m_regSliceCurrent.getLowerZ(); iZVolSpace <= iMaxZVolSpace; iZVolSpace++)
for (int32_t iZVolSpace = m_regSizeInVoxels.getLowerZ(); iZVolSpace <= iMaxZVolSpace; iZVolSpace++)
{
uint32_t uZRegSpace = iZVolSpace - m_regSizeInVoxels.getLowerZ();
//Process all remaining elemnents of the slice. In this case, previous x and y values are always available
for (int32_t iYVolSpace = m_regSliceCurrent.getLowerY(); iYVolSpace <= iMaxYVolSpace; iYVolSpace++)
for (int32_t iYVolSpace = m_regSizeInVoxels.getLowerY(); iYVolSpace <= iMaxYVolSpace; iYVolSpace++)
{
m_sampVolume.setPosition(m_regSliceCurrent.getLowerX(), iYVolSpace, iZVolSpace);
for (int32_t iXVolSpace = m_regSliceCurrent.getLowerX(); iXVolSpace <= iMaxXVolSpace; iXVolSpace++)
m_sampVolume.setPosition(m_regSizeInVoxels.getLowerX(), iYVolSpace, iZVolSpace);
for (int32_t iXVolSpace = m_regSizeInVoxels.getLowerX(); iXVolSpace <= iMaxXVolSpace; iXVolSpace++)
{
uint32_t uXRegSpace = iXVolSpace - m_regSizeInVoxels.getLowerX();
uint32_t uYRegSpace = iYVolSpace - m_regSizeInVoxels.getLowerY();
@ -273,96 +256,93 @@ namespace PolyVox
const Array3DInt32& pIndicesY,
const Array3DInt32& pIndicesZ)
{
int32_t indlist[12];
for(int i = 0; i < 12; i++)
for (int32_t iZVolSpace = m_regSizeInVoxels.getLowerZ(); iZVolSpace <= m_regSizeInCells.getUpperZ(); iZVolSpace++)
{
indlist[i] = -1;
}
const int32_t iZVolSpace = m_regSlicePrevious.getLowerZ();
for(int32_t iYVolSpace = m_regSlicePrevious.getLowerY(); iYVolSpace <= m_regSizeInCells.getUpperY(); iYVolSpace++)
{
for(int32_t iXVolSpace = m_regSlicePrevious.getLowerX(); iXVolSpace <= m_regSizeInCells.getUpperX(); iXVolSpace++)
for (int32_t iYVolSpace = m_regSizeInVoxels.getLowerY(); iYVolSpace <= m_regSizeInCells.getUpperY(); iYVolSpace++)
{
m_sampVolume.setPosition(iXVolSpace,iYVolSpace,iZVolSpace);
for (int32_t iXVolSpace = m_regSizeInVoxels.getLowerX(); iXVolSpace <= m_regSizeInCells.getUpperX(); iXVolSpace++)
{
int32_t indlist[12];
//Current position
const uint32_t uXRegSpace = m_sampVolume.getPosition().getX() - m_regSizeInVoxels.getLowerX();
const uint32_t uYRegSpace = m_sampVolume.getPosition().getY() - m_regSizeInVoxels.getLowerY();
const uint32_t uZRegSpace = m_sampVolume.getPosition().getZ() - m_regSizeInVoxels.getLowerZ();
m_sampVolume.setPosition(iXVolSpace, iYVolSpace, iZVolSpace);
//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);
//Current position
const uint32_t uXRegSpace = m_sampVolume.getPosition().getX() - m_regSizeInVoxels.getLowerX();
const uint32_t uYRegSpace = m_sampVolume.getPosition().getY() - m_regSizeInVoxels.getLowerY();
const uint32_t uZRegSpace = m_sampVolume.getPosition().getZ() - m_regSizeInVoxels.getLowerZ();
/* Cube is entirely in/out of the surface */
if (edgeTable[iCubeIndex] == 0)
{
continue;
}
//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);
/* Find the vertices where the surface intersects the cube */
if (edgeTable[iCubeIndex] & 1)
{
indlist[0] = pIndicesX(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 2)
{
indlist[1] = pIndicesY(uXRegSpace + 1, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 4)
{
indlist[2] = pIndicesX(uXRegSpace, uYRegSpace + 1, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 8)
{
indlist[3] = pIndicesY(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 16)
{
indlist[4] = pIndicesX(uXRegSpace, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 32)
{
indlist[5] = pIndicesY(uXRegSpace + 1, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 64)
{
indlist[6] = pIndicesX(uXRegSpace, uYRegSpace + 1, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 128)
{
indlist[7] = pIndicesY(uXRegSpace, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 256)
{
indlist[8] = pIndicesZ(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 512)
{
indlist[9] = pIndicesZ(uXRegSpace + 1, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 1024)
{
indlist[10] = pIndicesZ(uXRegSpace + 1, uYRegSpace + 1, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 2048)
{
indlist[11] = pIndicesZ(uXRegSpace, uYRegSpace + 1, uZRegSpace);
}
for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3)
{
const int32_t ind0 = indlist[triTable[iCubeIndex][i ]];
const int32_t ind1 = indlist[triTable[iCubeIndex][i+1]];
const int32_t ind2 = indlist[triTable[iCubeIndex][i+2]];
if((ind0 != -1) && (ind1 != -1) && (ind2 != -1))
/* Cube is entirely in/out of the surface */
if (edgeTable[iCubeIndex] == 0)
{
m_meshCurrent->addTriangle(ind0, ind1, ind2);
continue;
}
}//For each triangle
}//For each cell
/* Find the vertices where the surface intersects the cube */
if (edgeTable[iCubeIndex] & 1)
{
indlist[0] = pIndicesX(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 2)
{
indlist[1] = pIndicesY(uXRegSpace + 1, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 4)
{
indlist[2] = pIndicesX(uXRegSpace, uYRegSpace + 1, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 8)
{
indlist[3] = pIndicesY(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 16)
{
indlist[4] = pIndicesX(uXRegSpace, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 32)
{
indlist[5] = pIndicesY(uXRegSpace + 1, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 64)
{
indlist[6] = pIndicesX(uXRegSpace, uYRegSpace + 1, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 128)
{
indlist[7] = pIndicesY(uXRegSpace, uYRegSpace, uZRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 256)
{
indlist[8] = pIndicesZ(uXRegSpace, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 512)
{
indlist[9] = pIndicesZ(uXRegSpace + 1, uYRegSpace, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 1024)
{
indlist[10] = pIndicesZ(uXRegSpace + 1, uYRegSpace + 1, uZRegSpace);
}
if (edgeTable[iCubeIndex] & 2048)
{
indlist[11] = pIndicesZ(uXRegSpace, uYRegSpace + 1, uZRegSpace);
}
for (int i = 0; triTable[iCubeIndex][i] != -1; i += 3)
{
const int32_t ind0 = indlist[triTable[iCubeIndex][i]];
const int32_t ind1 = indlist[triTable[iCubeIndex][i + 1]];
const int32_t ind2 = indlist[triTable[iCubeIndex][i + 2]];
if ((ind0 != -1) && (ind1 != -1) && (ind2 != -1))
{
m_meshCurrent->addTriangle(ind0, ind1, ind2);
}
}//For each triangle
}//For each cell
}
}
}
}