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This commit is contained in:
David Williams
2008-06-05 18:51:31 +00:00
parent 8bf6f4d08d
commit a26b754e9c
1 changed files with 34 additions and 24 deletions
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58
source/SurfaceExtractors.cpp
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@@ -96,12 +96,18 @@ namespace PolyVox
void generateExperimentalMeshDataForRegionSlice(BlockVolumeIterator<uint8_t>& volIter, Region regTwoSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8_t bitmask0[][POLYVOX_REGION_SIDE_LENGTH+1], uint8_t bitmask1[][POLYVOX_REGION_SIDE_LENGTH+1])
{
//For edge indices
boost::int32_t vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
memset(vertexIndicesX,0xFF,sizeof(vertexIndicesX)); //0xFF is -1 as two's complement - this may not be portable...
memset(vertexIndicesY,0xFF,sizeof(vertexIndicesY));
memset(vertexIndicesZ,0xFF,sizeof(vertexIndicesZ));
boost::int32_t vertexIndicesX0[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesY0[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesZ0[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesX1[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesY1[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
boost::int32_t vertexIndicesZ1[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1];
memset(vertexIndicesX0,0xFF,sizeof(vertexIndicesX0)); //0xFF is -1 as two's complement - this may not be portable...
memset(vertexIndicesY0,0xFF,sizeof(vertexIndicesY0));
memset(vertexIndicesZ0,0xFF,sizeof(vertexIndicesZ0));
memset(vertexIndicesX1,0xFF,sizeof(vertexIndicesX1)); //0xFF is -1 as two's complement - this may not be portable...
memset(vertexIndicesY1,0xFF,sizeof(vertexIndicesY1));
memset(vertexIndicesZ1,0xFF,sizeof(vertexIndicesZ1));
Region regFirstSlice(regTwoSlice);
regFirstSlice.setUpperCorner(regFirstSlice.getUpperCorner() - Vector3DInt32(0,0,1));
@@ -149,7 +155,7 @@ namespace PolyVox
vertMaterials[0] = v000 | volIter.peekVoxel1px0py0pz(); //Because one of these is 0, the or operation takes the max.
SurfaceVertex surfaceVertex(vertlist[0],vertMaterials[0], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesX[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesX0[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
if (edgeTable[iCubeIndex] & 8)
@@ -162,7 +168,7 @@ namespace PolyVox
vertMaterials[3] = v000 | volIter.peekVoxel0px1py0pz();
SurfaceVertex surfaceVertex(vertlist[3],vertMaterials[3], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesY[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesY0[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
if (edgeTable[iCubeIndex] & 256)
@@ -175,7 +181,7 @@ namespace PolyVox
vertMaterials[8] = v000 | volIter.peekVoxel0px0py1pz();
SurfaceVertex surfaceVertex(vertlist[8],vertMaterials[8], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesZ[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesZ0[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
}while(volIter.moveForwardInRegionXYZ());//For each cell
@@ -213,7 +219,7 @@ namespace PolyVox
vertMaterials[0] = v000 | volIter.peekVoxel1px0py0pz(); //Because one of these is 0, the or operation takes the max.
SurfaceVertex surfaceVertex(vertlist[0],vertMaterials[0], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesX[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesX1[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
if (edgeTable[iCubeIndex] & 8)
@@ -226,7 +232,7 @@ namespace PolyVox
vertMaterials[3] = v000 | volIter.peekVoxel0px1py0pz();
SurfaceVertex surfaceVertex(vertlist[3],vertMaterials[3], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesY[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesY1[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
if (edgeTable[iCubeIndex] & 256)
@@ -239,7 +245,7 @@ namespace PolyVox
vertMaterials[8] = v000 | volIter.peekVoxel0px0py1pz();
SurfaceVertex surfaceVertex(vertlist[8],vertMaterials[8], 1.0);
singleMaterialPatch->m_vecVertices.push_back(surfaceVertex);
vertexIndicesZ[x][y][z] = singleMaterialPatch->m_vecVertices.size()-1;
vertexIndicesZ1[x][y] = singleMaterialPatch->m_vecVertices.size()-1;
}
}
}while(volIter.moveForwardInRegionXYZ());//For each cell
@@ -274,62 +280,62 @@ namespace PolyVox
/* Find the vertices where the surface intersects the cube */
if (edgeTable[iCubeIndex] & 1)
{
indlist[0] = vertexIndicesX[x][y][z];
indlist[0] = vertexIndicesX0[x][y];
assert(indlist[0] != -1);
}
if (edgeTable[iCubeIndex] & 2)
{
indlist[1] = vertexIndicesY[x+1][y][z];
indlist[1] = vertexIndicesY0[x+1][y];
assert(indlist[1] != -1);
}
if (edgeTable[iCubeIndex] & 4)
{
indlist[2] = vertexIndicesX[x][y+1][z];
indlist[2] = vertexIndicesX0[x][y+1];
assert(indlist[2] != -1);
}
if (edgeTable[iCubeIndex] & 8)
{
indlist[3] = vertexIndicesY[x][y][z];
indlist[3] = vertexIndicesY0[x][y];
assert(indlist[3] != -1);
}
if (edgeTable[iCubeIndex] & 16)
{
indlist[4] = vertexIndicesX[x][y][z+1];
indlist[4] = vertexIndicesX1[x][y];
assert(indlist[4] != -1);
}
if (edgeTable[iCubeIndex] & 32)
{
indlist[5] = vertexIndicesY[x+1][y][z+1];
indlist[5] = vertexIndicesY1[x+1][y];
assert(indlist[5] != -1);
}
if (edgeTable[iCubeIndex] & 64)
{
indlist[6] = vertexIndicesX[x][y+1][z+1];
indlist[6] = vertexIndicesX1[x][y+1];
assert(indlist[6] != -1);
}
if (edgeTable[iCubeIndex] & 128)
{
indlist[7] = vertexIndicesY[x][y][z+1];
indlist[7] = vertexIndicesY1[x][y];
assert(indlist[7] != -1);
}
if (edgeTable[iCubeIndex] & 256)
{
indlist[8] = vertexIndicesZ[x][y][z];
indlist[8] = vertexIndicesZ0[x][y];
assert(indlist[8] != -1);
}
if (edgeTable[iCubeIndex] & 512)
{
indlist[9] = vertexIndicesZ[x+1][y][z];
indlist[9] = vertexIndicesZ0[x+1][y];
assert(indlist[9] != -1);
}
if (edgeTable[iCubeIndex] & 1024)
{
indlist[10] = vertexIndicesZ[x+1][y+1][z];
indlist[10] = vertexIndicesZ0[x+1][y+1];
assert(indlist[10] != -1);
}
if (edgeTable[iCubeIndex] & 2048)
{
indlist[11] = vertexIndicesZ[x][y+1][z];
indlist[11] = vertexIndicesZ0[x][y+1];
assert(indlist[11] != -1);
}
@@ -387,6 +393,10 @@ namespace PolyVox
}while(volIter.moveForwardInRegionXYZ());//For each cell
}
/*void generateVerticesForSlice()
{
}*/
void generateRoughMeshDataForRegion(BlockVolume<uint8_t>* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch)
{
//When generating the mesh for a region we actually look one voxel outside it in the