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Switched marching cubes extractor to use new Array2D instead of array, and it now more than twice as fast in the best case (empty volume).

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David Williams
2014-08-21 23:04:30 +02:00
parent 83c287727f
commit 0ff0234ce1
2 changed files with 39 additions and 39 deletions
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2
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.h
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@@ -27,7 +27,7 @@ freely, subject to the following restrictions:
#include "Impl/MarchingCubesTables.h"
#include "Impl/TypeDef.h"
#include "PolyVoxCore/Array.h"
#include "PolyVoxCore/Impl/Array2D.h"
#include "PolyVoxCore/BaseVolume.h" //For wrap modes... should move these?
#include "PolyVoxCore/Mesh.h"
#include "PolyVoxCore/DefaultMarchingCubesController.h"

76
library/PolyVoxCore/include/PolyVoxCore/MarchingCubesSurfaceExtractor.inl
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@@ -53,15 +53,15 @@ namespace PolyVox
const uint32_t arraySizes[2]= {uArrayWidth, uArrayHeight}; // Array dimensions
//For edge indices
Array2DInt32 m_pPreviousVertexIndicesX(arraySizes);
Array2DInt32 m_pPreviousVertexIndicesY(arraySizes);
Array2DInt32 m_pPreviousVertexIndicesZ(arraySizes);
Array2DInt32 m_pCurrentVertexIndicesX(arraySizes);
Array2DInt32 m_pCurrentVertexIndicesY(arraySizes);
Array2DInt32 m_pCurrentVertexIndicesZ(arraySizes);
Array2DInt32 m_pPreviousVertexIndicesX(uArrayWidth, uArrayHeight);
Array2DInt32 m_pPreviousVertexIndicesY(uArrayWidth, uArrayHeight);
Array2DInt32 m_pPreviousVertexIndicesZ(uArrayWidth, uArrayHeight);
Array2DInt32 m_pCurrentVertexIndicesX(uArrayWidth, uArrayHeight);
Array2DInt32 m_pCurrentVertexIndicesY(uArrayWidth, uArrayHeight);
Array2DInt32 m_pCurrentVertexIndicesZ(uArrayWidth, uArrayHeight);
Array2DUint8 pPreviousBitmask(arraySizes);
Array2DUint8 pCurrentBitmask(arraySizes);
Array2DUint8 pPreviousBitmask(uArrayWidth, uArrayHeight);
Array2DUint8 pCurrentBitmask(uArrayWidth, uArrayHeight);
//Create a region corresponding to the first slice
m_regSlicePrevious = m_regSizeInVoxels;
@@ -220,16 +220,16 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//z
uint8_t iPreviousCubeIndexZ = pPreviousBitmask[uXRegSpace][uYRegSpace];
uint8_t iPreviousCubeIndexZ = pPreviousBitmask(uXRegSpace, uYRegSpace);
iPreviousCubeIndexZ >>= 4;
//y
uint8_t iPreviousCubeIndexY = pCurrentBitmask[uXRegSpace][uYRegSpace-1];
uint8_t iPreviousCubeIndexY = pCurrentBitmask(uXRegSpace, uYRegSpace - 1);
iPreviousCubeIndexY &= 192; //192 = 128 + 64
iPreviousCubeIndexY >>= 2;
//x
uint8_t iPreviousCubeIndexX = pCurrentBitmask[uXRegSpace-1][uYRegSpace];
uint8_t iPreviousCubeIndexX = pCurrentBitmask(uXRegSpace - 1, uYRegSpace);
iPreviousCubeIndexX &= 128;
iPreviousCubeIndexX >>= 1;
@@ -243,11 +243,11 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//z
uint8_t iPreviousCubeIndexZ = pPreviousBitmask[uXRegSpace][uYRegSpace];
uint8_t iPreviousCubeIndexZ = pPreviousBitmask(uXRegSpace, uYRegSpace);
iPreviousCubeIndexZ >>= 4;
//y
uint8_t iPreviousCubeIndexY = pCurrentBitmask[uXRegSpace][uYRegSpace-1];
uint8_t iPreviousCubeIndexY = pCurrentBitmask(uXRegSpace, uYRegSpace - 1);
iPreviousCubeIndexY &= 192; //192 = 128 + 64
iPreviousCubeIndexY >>= 2;
@@ -265,11 +265,11 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//z
uint8_t iPreviousCubeIndexZ = pPreviousBitmask[uXRegSpace][uYRegSpace];
uint8_t iPreviousCubeIndexZ = pPreviousBitmask(uXRegSpace, uYRegSpace);
iPreviousCubeIndexZ >>= 4;
//x
uint8_t iPreviousCubeIndexX = pCurrentBitmask[uXRegSpace-1][uYRegSpace];
uint8_t iPreviousCubeIndexX = pCurrentBitmask(uXRegSpace - 1, uYRegSpace);
iPreviousCubeIndexX &= 160; //160 = 128+32
iPreviousCubeIndexX >>= 1;
@@ -286,7 +286,7 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//z
uint8_t iPreviousCubeIndexZ = pPreviousBitmask[uXRegSpace][uYRegSpace];
uint8_t iPreviousCubeIndexZ = pPreviousBitmask(uXRegSpace, uYRegSpace);
iCubeIndex = iPreviousCubeIndexZ >> 4;
if (m_controller.convertToDensity(v001) < m_tThreshold) iCubeIndex |= 16;
@@ -306,12 +306,12 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//y
uint8_t iPreviousCubeIndexY = pCurrentBitmask[uXRegSpace][uYRegSpace-1];
uint8_t iPreviousCubeIndexY = pCurrentBitmask(uXRegSpace, uYRegSpace - 1);
iPreviousCubeIndexY &= 204; //204 = 128+64+8+4
iPreviousCubeIndexY >>= 2;
//x
uint8_t iPreviousCubeIndexX = pCurrentBitmask[uXRegSpace-1][uYRegSpace];
uint8_t iPreviousCubeIndexX = pCurrentBitmask(uXRegSpace - 1, uYRegSpace);
iPreviousCubeIndexX &= 170; //170 = 128+32+8+2
iPreviousCubeIndexX >>= 1;
@@ -329,7 +329,7 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//y
uint8_t iPreviousCubeIndexY = pCurrentBitmask[uXRegSpace][uYRegSpace-1];
uint8_t iPreviousCubeIndexY = pCurrentBitmask(uXRegSpace, uYRegSpace - 1);
iPreviousCubeIndexY &= 204; //204 = 128+64+8+4
iPreviousCubeIndexY >>= 2;
@@ -352,7 +352,7 @@ namespace PolyVox
v111 = m_sampVolume.peekVoxel1px1py1pz();
//x
uint8_t iPreviousCubeIndexX = pCurrentBitmask[uXRegSpace-1][uYRegSpace];
uint8_t iPreviousCubeIndexX = pCurrentBitmask(uXRegSpace - 1, uYRegSpace);
iPreviousCubeIndexX &= 170; //170 = 128+32+8+2
iPreviousCubeIndexX >>= 1;
@@ -388,7 +388,7 @@ namespace PolyVox
}
//Save the bitmask
pCurrentBitmask[uXRegSpace][uYRegSpace] = iCubeIndex;
pCurrentBitmask(uXRegSpace, uYRegSpace) = iCubeIndex;
if(edgeTable[iCubeIndex] != 0)
{
@@ -415,7 +415,7 @@ namespace PolyVox
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 = pCurrentBitmask[uXRegSpace][uYRegSpace];
const uint8_t iCubeIndex = pCurrentBitmask(uXRegSpace, uYRegSpace);
/* Cube is entirely in/out of the surface */
if (edgeTable[iCubeIndex] == 0)
@@ -461,7 +461,7 @@ namespace PolyVox
surfaceVertex.data = uMaterial;
const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);
m_pCurrentVertexIndicesX[iXVolSpace - m_regSizeInVoxels.getLowerX()][iYVolSpace - m_regSizeInVoxels.getLowerY()] = uLastVertexIndex;
m_pCurrentVertexIndicesX(iXVolSpace - m_regSizeInVoxels.getLowerX(), iYVolSpace - m_regSizeInVoxels.getLowerY()) = uLastVertexIndex;
m_sampVolume.moveNegativeX();
}
@@ -495,7 +495,7 @@ namespace PolyVox
surfaceVertex.data = uMaterial;
uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);
m_pCurrentVertexIndicesY[iXVolSpace - m_regSizeInVoxels.getLowerX()][iYVolSpace - m_regSizeInVoxels.getLowerY()] = uLastVertexIndex;
m_pCurrentVertexIndicesY(iXVolSpace - m_regSizeInVoxels.getLowerX(), iYVolSpace - m_regSizeInVoxels.getLowerY()) = uLastVertexIndex;
m_sampVolume.moveNegativeY();
}
@@ -528,7 +528,7 @@ namespace PolyVox
surfaceVertex.data = uMaterial;
const uint32_t uLastVertexIndex = m_meshCurrent->addVertex(surfaceVertex);
m_pCurrentVertexIndicesZ[iXVolSpace - m_regSizeInVoxels.getLowerX()][iYVolSpace - m_regSizeInVoxels.getLowerY()] = uLastVertexIndex;
m_pCurrentVertexIndicesZ(iXVolSpace - m_regSizeInVoxels.getLowerX(), iYVolSpace - m_regSizeInVoxels.getLowerY()) = uLastVertexIndex;
m_sampVolume.moveNegativeZ();
}
@@ -563,7 +563,7 @@ namespace PolyVox
const uint32_t uYRegSpace = m_sampVolume.getPosition().getY() - m_regSizeInVoxels.getLowerY();
//Determine the index into the edge table which tells us which vertices are inside of the surface
const uint8_t iCubeIndex = pPreviousBitmask[uXRegSpace][uYRegSpace];
const uint8_t iCubeIndex = pPreviousBitmask(uXRegSpace, uYRegSpace);
/* Cube is entirely in/out of the surface */
if (edgeTable[iCubeIndex] == 0)
@@ -574,51 +574,51 @@ namespace PolyVox
/* Find the vertices where the surface intersects the cube */
if (edgeTable[iCubeIndex] & 1)
{
indlist[0] = m_pPreviousVertexIndicesX[uXRegSpace][uYRegSpace];
indlist[0] = m_pPreviousVertexIndicesX(uXRegSpace, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 2)
{
indlist[1] = m_pPreviousVertexIndicesY[uXRegSpace+1][uYRegSpace];
indlist[1] = m_pPreviousVertexIndicesY(uXRegSpace + 1, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 4)
{
indlist[2] = m_pPreviousVertexIndicesX[uXRegSpace][uYRegSpace+1];
indlist[2] = m_pPreviousVertexIndicesX(uXRegSpace, uYRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 8)
{
indlist[3] = m_pPreviousVertexIndicesY[uXRegSpace][uYRegSpace];
indlist[3] = m_pPreviousVertexIndicesY(uXRegSpace, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 16)
{
indlist[4] = m_pCurrentVertexIndicesX[uXRegSpace][uYRegSpace];
indlist[4] = m_pCurrentVertexIndicesX(uXRegSpace, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 32)
{
indlist[5] = m_pCurrentVertexIndicesY[uXRegSpace+1][uYRegSpace];
indlist[5] = m_pCurrentVertexIndicesY(uXRegSpace + 1, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 64)
{
indlist[6] = m_pCurrentVertexIndicesX[uXRegSpace][uYRegSpace+1];
indlist[6] = m_pCurrentVertexIndicesX(uXRegSpace, uYRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 128)
{
indlist[7] = m_pCurrentVertexIndicesY[uXRegSpace][uYRegSpace];
indlist[7] = m_pCurrentVertexIndicesY(uXRegSpace, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 256)
{
indlist[8] = m_pPreviousVertexIndicesZ[uXRegSpace][uYRegSpace];
indlist[8] = m_pPreviousVertexIndicesZ(uXRegSpace, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 512)
{
indlist[9] = m_pPreviousVertexIndicesZ[uXRegSpace+1][uYRegSpace];
indlist[9] = m_pPreviousVertexIndicesZ(uXRegSpace + 1, uYRegSpace);
}
if (edgeTable[iCubeIndex] & 1024)
{
indlist[10] = m_pPreviousVertexIndicesZ[uXRegSpace+1][uYRegSpace+1];
indlist[10] = m_pPreviousVertexIndicesZ(uXRegSpace + 1, uYRegSpace + 1);
}
if (edgeTable[iCubeIndex] & 2048)
{
indlist[11] = m_pPreviousVertexIndicesZ[uXRegSpace][uYRegSpace+1];
indlist[11] = m_pPreviousVertexIndicesZ(uXRegSpace, uYRegSpace + 1);
}
for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3)