diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt index b8054add..85bfd990 100644 --- a/library/CMakeLists.txt +++ b/library/CMakeLists.txt @@ -16,7 +16,6 @@ SET(CORE_SRC_FILES source/PolyVoxCore/RegionGeometry.cpp source/PolyVoxCore/SurfaceAdjusters.cpp source/PolyVoxCore/SurfaceExtractors.cpp - source/PolyVoxCore/SurfaceExtractorsDecimated.cpp source/PolyVoxCore/SurfaceVertex.cpp source/PolyVoxCore/Utility.cpp source/PolyVoxCore/VoxelFilters.cpp @@ -44,7 +43,6 @@ SET(CORE_INC_FILES include/PolyVoxCore/RegionGeometry.h include/PolyVoxCore/SurfaceAdjusters.h include/PolyVoxCore/SurfaceExtractors.h - include/PolyVoxCore/SurfaceExtractorsDecimated.h include/PolyVoxCore/SurfaceVertex.h include/PolyVoxCore/TypeDef.h include/PolyVoxCore/Utility.h @@ -53,6 +51,18 @@ SET(CORE_INC_FILES include/PolyVoxCore/VoxelFilters.h ) +SET(IMPL_SRC_FILES + source/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.cpp + source/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.cpp + source/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.cpp +) + +SET(IMPL_INC_FILES + include/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h + include/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h + include/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h +) + #Projects source files SET(UTIL_SRC_FILES source/PolyVoxUtil/VolumeChangeTracker.cpp @@ -70,17 +80,20 @@ SET(CMAKE_DEBUG_POSTFIX "_d") #"Sources" and "Headers" are the group names in Visual Studio. #They may have other uses too... -SOURCE_GROUP("CoreSources" FILES ${CORE_SRC_FILES}) -SOURCE_GROUP("CoreHeaders" FILES ${CORE_INC_FILES}) +SOURCE_GROUP("Sources" FILES ${CORE_SRC_FILES}) +SOURCE_GROUP("Headers" FILES ${CORE_INC_FILES}) -SOURCE_GROUP("UtilSources" FILES ${UTIL_SRC_FILES}) -SOURCE_GROUP("UtilHeaders" FILES ${UTIL_INC_FILES}) +SOURCE_GROUP("Sources\\PolyVoxImpl" FILES ${IMPL_SRC_FILES}) +SOURCE_GROUP("Headers\\PolyVoxImpl" FILES ${IMPL_INC_FILES}) + +SOURCE_GROUP("Sources" FILES ${UTIL_SRC_FILES}) +SOURCE_GROUP("Headers" FILES ${UTIL_INC_FILES}) #Tell CMake the paths INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/include) #Build -ADD_LIBRARY(PolyVoxCore SHARED ${CORE_SRC_FILES} ${CORE_INC_FILES}) +ADD_LIBRARY(PolyVoxCore SHARED ${CORE_SRC_FILES} ${CORE_INC_FILES} ${IMPL_SRC_FILES} ${IMPL_INC_FILES}) SET_TARGET_PROPERTIES(PolyVoxCore PROPERTIES VERSION ${POLYVOX_VERSION} SOVERSION ${POLYVOX_VERSION_MAJOR}) IF(WIN32) SET_TARGET_PROPERTIES(PolyVoxCore PROPERTIES COMPILE_FLAGS "/wd4251") #Disable warning on STL exports diff --git a/library/include/PolyVoxCore/SurfaceExtractorsDecimated.h b/library/include/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h similarity index 83% rename from library/include/PolyVoxCore/SurfaceExtractorsDecimated.h rename to library/include/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h index 95c5e43a..85b504f1 100644 --- a/library/include/PolyVoxCore/SurfaceExtractorsDecimated.h +++ b/library/include/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h @@ -19,24 +19,22 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. ******************************************************************************/ #pragma endregion -#ifndef __PolyVox_SurfaceExtractorsDecimated_H__ -#define __PolyVox_SurfaceExtractorsDecimated_H__ +#ifndef __PolyVoxImpl_DecimatedSurfaceExtractor_H__ +#define __PolyVoxImpl_DecimatedSurfaceExtractor_H__ #pragma region Headers -#include "Constants.h" -#include "PolyVoxForwardDeclarations.h" -#include "TypeDef.h" +#include "PolyVoxCore/Constants.h" +#include "PolyVoxCore/PolyVoxForwardDeclarations.h" +#include "PolyVoxCore/TypeDef.h" -#include "PolyVoxCStdInt.h" - -#include +#include "PolyVoxCore/PolyVoxCStdInt.h" #pragma endregion namespace PolyVox { uint32 getDecimatedIndex(uint32 x, uint32 y); - POLYVOX_API void generateDecimatedMeshDataForRegion(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch); + POLYVOX_API void generateDecimatedMeshDataForRegionImpl(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch); POLYVOX_API uint32 computeInitialDecimatedBitmaskForSlice(BlockVolumeIterator& volIter, uint8 uLevel, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask); POLYVOX_API uint32 computeDecimatedBitmaskForSliceFromPrevious(BlockVolumeIterator& volIter, uint8 uLevel, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask, uint8 *previousBitmask); POLYVOX_API void generateDecimatedIndicesForSlice(BlockVolumeIterator& volIter, uint8 uLevel, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8* bitmask0, uint8* bitmask1, int32 vertexIndicesX0[],int32 vertexIndicesY0[],int32 vertexIndicesZ0[], int32 vertexIndicesX1[],int32 vertexIndicesY1[],int32 vertexIndicesZ1[]); diff --git a/library/include/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h b/library/include/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h new file mode 100644 index 00000000..b7bd1456 --- /dev/null +++ b/library/include/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h @@ -0,0 +1,43 @@ +#pragma region License +/****************************************************************************** +This file is part of the PolyVox library +Copyright (C) 2006 David Williams + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +******************************************************************************/ +#pragma endregion + +#ifndef __PolyVoxImpl_FastSurfaceExtractor_H__ +#define __PolyVoxImpl_FastSurfaceExtractor_H__ + +#pragma region Headers +#include "PolyVoxCore/Constants.h" +#include "PolyVoxCore/PolyVoxForwardDeclarations.h" +#include "PolyVoxCore/TypeDef.h" + +#include "PolyVoxCore/PolyVoxCStdInt.h" +#pragma endregion + +namespace PolyVox +{ + POLYVOX_API void generateRoughMeshDataForRegionImpl(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch); + uint32 getIndex(uint32 x, uint32 y); + POLYVOX_API uint32 computeInitialRoughBitmaskForSlice(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask); + POLYVOX_API uint32 computeRoughBitmaskForSliceFromPrevious(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask, uint8 *previousBitmask); + POLYVOX_API void generateRoughIndicesForSlice(BlockVolumeIterator& volIter, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8* bitmask0, uint8* bitmask1, int32 vertexIndicesX0[],int32 vertexIndicesY0[],int32 vertexIndicesZ0[], int32 vertexIndicesX1[],int32 vertexIndicesY1[],int32 vertexIndicesZ1[]); + POLYVOX_API void generateRoughVerticesForSlice(BlockVolumeIterator& volIter, Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, IndexedSurfacePatch* singleMaterialPatch,int32 vertexIndicesX[],int32 vertexIndicesY[],int32 vertexIndicesZ[]); +} + +#endif diff --git a/library/include/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h b/library/include/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h new file mode 100644 index 00000000..92f87caf --- /dev/null +++ b/library/include/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h @@ -0,0 +1,40 @@ +#pragma region License +/****************************************************************************** +This file is part of the PolyVox library +Copyright (C) 2006 David Williams + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +******************************************************************************/ +#pragma endregion + +#ifndef __PolyVoxImpl_ReferenceSurfaceExtractor_H__ +#define __PolyVoxImpl_ReferenceSurfaceExtractor_H__ + +#pragma region Headers +#include "PolyVoxCore/Constants.h" +#include "PolyVoxCore/PolyVoxForwardDeclarations.h" +#include "PolyVoxCore/TypeDef.h" + +#include "PolyVoxCore/PolyVoxCStdInt.h" +#pragma endregion + +namespace PolyVox +{ + POLYVOX_API void generateReferenceMeshDataForRegionImpl(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch); + int32 getIndexFor(const Vector3DFloat& pos, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]); + void setIndexFor(const Vector3DFloat& pos, int32 newIndex, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]); +} + +#endif \ No newline at end of file diff --git a/library/include/PolyVoxCore/SurfaceExtractors.h b/library/include/PolyVoxCore/SurfaceExtractors.h index 95255c8b..103122ef 100644 --- a/library/include/PolyVoxCore/SurfaceExtractors.h +++ b/library/include/PolyVoxCore/SurfaceExtractors.h @@ -34,18 +34,11 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. namespace PolyVox { - uint32 getIndex(uint32 x, uint32 y); - POLYVOX_API void generateRoughMeshDataForRegion(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch); - POLYVOX_API uint32 computeInitialRoughBitmaskForSlice(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask); - POLYVOX_API uint32 computeRoughBitmaskForSliceFromPrevious(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8 *bitmask, uint8 *previousBitmask); - POLYVOX_API void generateRoughIndicesForSlice(BlockVolumeIterator& volIter, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8* bitmask0, uint8* bitmask1, int32 vertexIndicesX0[],int32 vertexIndicesY0[],int32 vertexIndicesZ0[], int32 vertexIndicesX1[],int32 vertexIndicesY1[],int32 vertexIndicesZ1[]); - POLYVOX_API void generateRoughVerticesForSlice(BlockVolumeIterator& volIter, Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, IndexedSurfacePatch* singleMaterialPatch,int32 vertexIndicesX[],int32 vertexIndicesY[],int32 vertexIndicesZ[]); POLYVOX_API void generateReferenceMeshDataForRegion(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch); - int32 getIndexFor(const Vector3DFloat& pos, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]); - void setIndexFor(const Vector3DFloat& pos, int32 newIndex, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]); + POLYVOX_API void generateDecimatedMeshDataForRegion(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch); } #endif diff --git a/library/source/PolyVoxCore/SurfaceExtractorsDecimated.cpp b/library/source/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.cpp similarity index 94% rename from library/source/PolyVoxCore/SurfaceExtractorsDecimated.cpp rename to library/source/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.cpp index dc8f8cd7..f2175a24 100644 --- a/library/source/PolyVoxCore/SurfaceExtractorsDecimated.cpp +++ b/library/source/PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.cpp @@ -1,4 +1,25 @@ -#include "PolyVoxCore/SurfaceExtractorsDecimated.h" +#pragma region License +/****************************************************************************** +This file is part of the PolyVox library +Copyright (C) 2006 David Williams + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +******************************************************************************/ +#pragma endregion + +#include "PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h" #include "PolyVoxCore/BlockVolume.h" #include "PolyVoxCore/GradientEstimators.h" @@ -19,7 +40,7 @@ namespace PolyVox return x + (y * (POLYVOX_REGION_SIDE_LENGTH+1)); } - void generateDecimatedMeshDataForRegion(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch) + void generateDecimatedMeshDataForRegionImpl(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch) { singleMaterialPatch->m_vecVertices.clear(); singleMaterialPatch->m_vecTriangleIndices.clear(); diff --git a/library/source/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.cpp b/library/source/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.cpp new file mode 100644 index 00000000..ddf45968 --- /dev/null +++ b/library/source/PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.cpp @@ -0,0 +1,546 @@ +#pragma region License +/****************************************************************************** +This file is part of the PolyVox library +Copyright (C) 2006 David Williams + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +******************************************************************************/ +#pragma endregion + +#include "PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h" + +#include "PolyVoxCore/BlockVolumeIterator.h" +#include "PolyVoxCore/IndexedSurfacePatch.h" +#include "PolyVoxCore/MarchingCubesTables.h" +#include "PolyVoxCore/SurfaceVertex.h" + +namespace PolyVox +{ + + void generateRoughMeshDataForRegionImpl(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch) + { + singleMaterialPatch->m_vecVertices.clear(); + singleMaterialPatch->m_vecTriangleIndices.clear(); + + //For edge indices + int32* vertexIndicesX0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + int32* vertexIndicesY0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + int32* vertexIndicesZ0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + int32* vertexIndicesX1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + int32* vertexIndicesY1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + int32* vertexIndicesZ1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + + //Cell bitmasks + uint8* bitmask0 = new uint8[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + uint8* bitmask1 = new uint8[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; + + //When generating the mesh for a region we actually look one voxel outside it in the + // back, bottom, right direction. Protect against access violations by cropping region here + Region regVolume = volumeData->getEnclosingRegion(); + regVolume.setUpperCorner(regVolume.getUpperCorner() - Vector3DInt32(1,1,1)); + region.cropTo(regVolume); + + //Offset from volume corner + const Vector3DFloat offset = static_cast(region.getLowerCorner()); + + //Create a region corresponding to the first slice + Region regSlice0(region); + regSlice0.setUpperCorner(Vector3DInt32(regSlice0.getUpperCorner().getX(),regSlice0.getUpperCorner().getY(),regSlice0.getLowerCorner().getZ())); + + //Iterator to access the volume data + BlockVolumeIterator volIter(*volumeData); + + //Compute bitmask for initial slice + uint32 uNoOfNonEmptyCellsForSlice0 = computeInitialRoughBitmaskForSlice(volIter, regSlice0, offset, bitmask0); + if(uNoOfNonEmptyCellsForSlice0 != 0) + { + //If there were some non-empty cells then generate initial slice vertices for them + generateRoughVerticesForSlice(volIter,regSlice0, offset, bitmask0, singleMaterialPatch, vertexIndicesX0, vertexIndicesY0, vertexIndicesZ0); + } + + for(uint32 uSlice = 0; ((uSlice <= POLYVOX_REGION_SIDE_LENGTH-1) && (uSlice + offset.getZ() < region.getUpperCorner().getZ())); ++uSlice) + { + Region regSlice1(regSlice0); + regSlice1.shift(Vector3DInt32(0,0,1)); + + uint32 uNoOfNonEmptyCellsForSlice1 = computeRoughBitmaskForSliceFromPrevious(volIter, regSlice1, offset, bitmask1, bitmask0); + + if(uNoOfNonEmptyCellsForSlice1 != 0) + { + generateRoughVerticesForSlice(volIter,regSlice1, offset, bitmask1, singleMaterialPatch, vertexIndicesX1, vertexIndicesY1, vertexIndicesZ1); + } + + if((uNoOfNonEmptyCellsForSlice0 != 0) || (uNoOfNonEmptyCellsForSlice1 != 0)) + { + generateRoughIndicesForSlice(volIter, regSlice0, singleMaterialPatch, offset, bitmask0, bitmask1, vertexIndicesX0, vertexIndicesY0, vertexIndicesZ0, vertexIndicesX1, vertexIndicesY1, vertexIndicesZ1); + } + + std::swap(uNoOfNonEmptyCellsForSlice0, uNoOfNonEmptyCellsForSlice1); + std::swap(bitmask0, bitmask1); + std::swap(vertexIndicesX0, vertexIndicesX1); + std::swap(vertexIndicesY0, vertexIndicesY1); + std::swap(vertexIndicesZ0, vertexIndicesZ1); + + regSlice0 = regSlice1; + } + + delete[] bitmask0; + delete[] bitmask1; + delete[] vertexIndicesX0; + delete[] vertexIndicesX1; + delete[] vertexIndicesY0; + delete[] vertexIndicesY1; + delete[] vertexIndicesZ0; + delete[] vertexIndicesZ1; + } + + uint32 getIndex(uint32 x, uint32 y) + { + return x + (y * (POLYVOX_REGION_SIDE_LENGTH+1)); + } + + uint32 computeInitialRoughBitmaskForSlice(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8* bitmask) + { + uint32 uNoOfNonEmptyCells = 0; + + //Iterate over each cell in the region + volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); + volIter.setValidRegion(regSlice); + do + { + //Current position + const uint16 x = volIter.getPosX() - offset.getX(); + const uint16 y = volIter.getPosY() - offset.getY(); + + //Determine the index into the edge table which tells us which vertices are inside of the surface + uint8 iCubeIndex = 0; + + if((x==0) && (y==0)) + { + const uint8 v000 = volIter.getVoxel(); + const uint8 v100 = volIter.peekVoxel1px0py0pz(); + const uint8 v010 = volIter.peekVoxel0px1py0pz(); + const uint8 v110 = volIter.peekVoxel1px1py0pz(); + + const uint8 v001 = volIter.peekVoxel0px0py1pz(); + const uint8 v101 = volIter.peekVoxel1px0py1pz(); + const uint8 v011 = volIter.peekVoxel0px1py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + if (v000 == 0) iCubeIndex |= 1; + if (v100 == 0) iCubeIndex |= 2; + if (v110 == 0) iCubeIndex |= 4; + if (v010 == 0) iCubeIndex |= 8; + if (v001 == 0) iCubeIndex |= 16; + if (v101 == 0) iCubeIndex |= 32; + if (v111 == 0) iCubeIndex |= 64; + if (v011 == 0) iCubeIndex |= 128; + } + else if((x>0) && y==0) + { + const uint8 v100 = volIter.peekVoxel1px0py0pz(); + const uint8 v110 = volIter.peekVoxel1px1py0pz(); + + const uint8 v101 = volIter.peekVoxel1px0py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //x + uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; + uint8 srcBit6 = iPreviousCubeIndexX & 64; + uint8 destBit7 = srcBit6 << 1; + + uint8 srcBit5 = iPreviousCubeIndexX & 32; + uint8 destBit4 = srcBit5 >> 1; + + uint8 srcBit2 = iPreviousCubeIndexX & 4; + uint8 destBit3 = srcBit2 << 1; + + uint8 srcBit1 = iPreviousCubeIndexX & 2; + uint8 destBit0 = srcBit1 >> 1; + + iCubeIndex |= destBit0; + if (v100 == 0) iCubeIndex |= 2; + if (v110 == 0) iCubeIndex |= 4; + iCubeIndex |= destBit3; + iCubeIndex |= destBit4; + if (v101 == 0) iCubeIndex |= 32; + if (v111 == 0) iCubeIndex |= 64; + iCubeIndex |= destBit7; + } + else if((x==0) && (y>0)) + { + const uint8 v010 = volIter.peekVoxel0px1py0pz(); + const uint8 v110 = volIter.peekVoxel1px1py0pz(); + + const uint8 v011 = volIter.peekVoxel0px1py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //y + uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; + uint8 srcBit7 = iPreviousCubeIndexY & 128; + uint8 destBit4 = srcBit7 >> 3; + + uint8 srcBit6 = iPreviousCubeIndexY & 64; + uint8 destBit5 = srcBit6 >> 1; + + uint8 srcBit3 = iPreviousCubeIndexY & 8; + uint8 destBit0 = srcBit3 >> 3; + + uint8 srcBit2 = iPreviousCubeIndexY & 4; + uint8 destBit1 = srcBit2 >> 1; + + iCubeIndex |= destBit0; + iCubeIndex |= destBit1; + if (v110 == 0) iCubeIndex |= 4; + if (v010 == 0) iCubeIndex |= 8; + iCubeIndex |= destBit4; + iCubeIndex |= destBit5; + if (v111 == 0) iCubeIndex |= 64; + if (v011 == 0) iCubeIndex |= 128; + } + else + { + const uint8 v110 = volIter.peekVoxel1px1py0pz(); + + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //y + uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; + uint8 srcBit7 = iPreviousCubeIndexY & 128; + uint8 destBit4 = srcBit7 >> 3; + + uint8 srcBit6 = iPreviousCubeIndexY & 64; + uint8 destBit5 = srcBit6 >> 1; + + uint8 srcBit3 = iPreviousCubeIndexY & 8; + uint8 destBit0 = srcBit3 >> 3; + + uint8 srcBit2 = iPreviousCubeIndexY & 4; + uint8 destBit1 = srcBit2 >> 1; + + //x + uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; + srcBit6 = iPreviousCubeIndexX & 64; + uint8 destBit7 = srcBit6 << 1; + + srcBit2 = iPreviousCubeIndexX & 4; + uint8 destBit3 = srcBit2 << 1; + + iCubeIndex |= destBit0; + iCubeIndex |= destBit1; + if (v110 == 0) iCubeIndex |= 4; + iCubeIndex |= destBit3; + iCubeIndex |= destBit4; + iCubeIndex |= destBit5; + if (v111 == 0) iCubeIndex |= 64; + iCubeIndex |= destBit7; + } + + //Save the bitmask + bitmask[getIndex(x,y)] = iCubeIndex; + + if(edgeTable[iCubeIndex] != 0) + { + ++uNoOfNonEmptyCells; + } + + }while(volIter.moveForwardInRegionXYZ());//For each cell + + return uNoOfNonEmptyCells; + } + + uint32 computeRoughBitmaskForSliceFromPrevious(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, uint8* previousBitmask) + { + uint32 uNoOfNonEmptyCells = 0; + + //Iterate over each cell in the region + volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); + volIter.setValidRegion(regSlice); + do + { + //Current position + const uint16 x = volIter.getPosX() - offset.getX(); + const uint16 y = volIter.getPosY() - offset.getY(); + + //Determine the index into the edge table which tells us which vertices are inside of the surface + uint8 iCubeIndex = 0; + + if((x==0) && (y==0)) + { + const uint8 v001 = volIter.peekVoxel0px0py1pz(); + const uint8 v101 = volIter.peekVoxel1px0py1pz(); + const uint8 v011 = volIter.peekVoxel0px1py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //z + uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; + iCubeIndex = iPreviousCubeIndexZ >> 4; + + if (v001 == 0) iCubeIndex |= 16; + if (v101 == 0) iCubeIndex |= 32; + if (v111 == 0) iCubeIndex |= 64; + if (v011 == 0) iCubeIndex |= 128; + } + else if((x>0) && y==0) + { + const uint8 v101 = volIter.peekVoxel1px0py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //z + uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; + iCubeIndex = iPreviousCubeIndexZ >> 4; + + //x + uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; + uint8 srcBit6 = iPreviousCubeIndexX & 64; + uint8 destBit7 = srcBit6 << 1; + + uint8 srcBit5 = iPreviousCubeIndexX & 32; + uint8 destBit4 = srcBit5 >> 1; + + iCubeIndex |= destBit4; + if (v101 == 0) iCubeIndex |= 32; + if (v111 == 0) iCubeIndex |= 64; + iCubeIndex |= destBit7; + } + else if((x==0) && (y>0)) + { + const uint8 v011 = volIter.peekVoxel0px1py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //z + uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; + iCubeIndex = iPreviousCubeIndexZ >> 4; + + //y + uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; + uint8 srcBit7 = iPreviousCubeIndexY & 128; + uint8 destBit4 = srcBit7 >> 3; + + uint8 srcBit6 = iPreviousCubeIndexY & 64; + uint8 destBit5 = srcBit6 >> 1; + + iCubeIndex |= destBit4; + iCubeIndex |= destBit5; + if (v111 == 0) iCubeIndex |= 64; + if (v011 == 0) iCubeIndex |= 128; + } + else + { + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //z + uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; + iCubeIndex = iPreviousCubeIndexZ >> 4; + + //y + uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; + uint8 srcBit7 = iPreviousCubeIndexY & 128; + uint8 destBit4 = srcBit7 >> 3; + + uint8 srcBit6 = iPreviousCubeIndexY & 64; + uint8 destBit5 = srcBit6 >> 1; + + //x + uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; + srcBit6 = iPreviousCubeIndexX & 64; + uint8 destBit7 = srcBit6 << 1; + + iCubeIndex |= destBit4; + iCubeIndex |= destBit5; + if (v111 == 0) iCubeIndex |= 64; + iCubeIndex |= destBit7; + } + + //Save the bitmask + bitmask[getIndex(x,y)] = iCubeIndex; + + if(edgeTable[iCubeIndex] != 0) + { + ++uNoOfNonEmptyCells; + } + + }while(volIter.moveForwardInRegionXYZ());//For each cell + + return uNoOfNonEmptyCells; + } + + void generateRoughVerticesForSlice(BlockVolumeIterator& volIter, Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, IndexedSurfacePatch* singleMaterialPatch,int32 vertexIndicesX[],int32 vertexIndicesY[],int32 vertexIndicesZ[]) + { + //Iterate over each cell in the region + volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); + volIter.setValidRegion(regSlice); + //while(volIter.moveForwardInRegionXYZ()) + do + { + //Current position + const uint16 x = volIter.getPosX() - offset.getX(); + const uint16 y = volIter.getPosY() - offset.getY(); + const uint16 z = volIter.getPosZ() - offset.getZ(); + + const uint8 v000 = volIter.getVoxel(); + + //Determine the index into the edge table which tells us which vertices are inside of the surface + uint8 iCubeIndex = bitmask[getIndex(x,y)]; + + /* Cube is entirely in/out of the surface */ + if (edgeTable[iCubeIndex] == 0) + { + continue; + } + + /* Find the vertices where the surface intersects the cube */ + if (edgeTable[iCubeIndex] & 1) + { + if((x + offset.getX()) != regSlice.getUpperCorner().getX()) + { + const uint8 v100 = volIter.peekVoxel1px0py0pz(); + const Vector3DFloat v3dPosition(x + 0.5f, y, z); + const Vector3DFloat v3dNormal(v000 > v100 ? 1.0f : -1.0f, 0.0f, 0.0f); + const uint8 uMaterial = v000 | v100; //Because one of these is 0, the or operation takes the max. + const SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); + singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); + vertexIndicesX[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; + } + } + if (edgeTable[iCubeIndex] & 8) + { + if((y + offset.getY()) != regSlice.getUpperCorner().getY()) + { + const uint8 v010 = volIter.peekVoxel0px1py0pz(); + const Vector3DFloat v3dPosition(x, y + 0.5f, z); + const Vector3DFloat v3dNormal(0.0f, v000 > v010 ? 1.0f : -1.0f, 0.0f); + const uint8 uMaterial = v000 | v010; + SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); + singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); + vertexIndicesY[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; + } + } + if (edgeTable[iCubeIndex] & 256) + { + //if((z + offset.getZ()) != upperCorner.getZ()) + { + const uint8 v001 = volIter.peekVoxel0px0py1pz(); + const Vector3DFloat v3dPosition(x, y, z + 0.5f); + const Vector3DFloat v3dNormal(0.0f, 0.0f, v000 > v001 ? 1.0f : -1.0f); + const uint8 uMaterial = v000 | v001; + SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); + singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); + vertexIndicesZ[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; + } + } + }while(volIter.moveForwardInRegionXYZ());//For each cell + } + + void generateRoughIndicesForSlice(BlockVolumeIterator& volIter, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8* bitmask0, uint8* bitmask1, int32 vertexIndicesX0[],int32 vertexIndicesY0[],int32 vertexIndicesZ0[], int32 vertexIndicesX1[],int32 vertexIndicesY1[],int32 vertexIndicesZ1[]) + { + uint32 indlist[12]; + + Region regCroppedSlice(regSlice); + regCroppedSlice.setUpperCorner(regCroppedSlice.getUpperCorner() - Vector3DInt32(1,1,0)); + + volIter.setPosition(regCroppedSlice.getLowerCorner().getX(),regCroppedSlice.getLowerCorner().getY(), regCroppedSlice.getLowerCorner().getZ()); + volIter.setValidRegion(regCroppedSlice); + do + { + //Current position + const uint16 x = volIter.getPosX() - offset.getX(); + const uint16 y = volIter.getPosY() - offset.getY(); + const uint16 z = volIter.getPosZ() - offset.getZ(); + + //Determine the index into the edge table which tells us which vertices are inside of the surface + uint8 iCubeIndex = bitmask0[getIndex(x,y)]; + + /* Cube is entirely in/out of the surface */ + if (edgeTable[iCubeIndex] == 0) + { + continue; + } + + /* Find the vertices where the surface intersects the cube */ + if (edgeTable[iCubeIndex] & 1) + { + indlist[0] = vertexIndicesX0[getIndex(x,y)]; + assert(indlist[0] != -1); + } + if (edgeTable[iCubeIndex] & 2) + { + indlist[1] = vertexIndicesY0[getIndex(x+1,y)]; + assert(indlist[1] != -1); + } + if (edgeTable[iCubeIndex] & 4) + { + indlist[2] = vertexIndicesX0[getIndex(x,y+1)]; + assert(indlist[2] != -1); + } + if (edgeTable[iCubeIndex] & 8) + { + indlist[3] = vertexIndicesY0[getIndex(x,y)]; + assert(indlist[3] != -1); + } + if (edgeTable[iCubeIndex] & 16) + { + indlist[4] = vertexIndicesX1[getIndex(x,y)]; + assert(indlist[4] != -1); + } + if (edgeTable[iCubeIndex] & 32) + { + indlist[5] = vertexIndicesY1[getIndex(x+1,y)]; + assert(indlist[5] != -1); + } + if (edgeTable[iCubeIndex] & 64) + { + indlist[6] = vertexIndicesX1[getIndex(x,y+1)]; + assert(indlist[6] != -1); + } + if (edgeTable[iCubeIndex] & 128) + { + indlist[7] = vertexIndicesY1[getIndex(x,y)]; + assert(indlist[7] != -1); + } + if (edgeTable[iCubeIndex] & 256) + { + indlist[8] = vertexIndicesZ0[getIndex(x,y)]; + assert(indlist[8] != -1); + } + if (edgeTable[iCubeIndex] & 512) + { + indlist[9] = vertexIndicesZ0[getIndex(x+1,y)]; + assert(indlist[9] != -1); + } + if (edgeTable[iCubeIndex] & 1024) + { + indlist[10] = vertexIndicesZ0[getIndex(x+1,y+1)]; + assert(indlist[10] != -1); + } + if (edgeTable[iCubeIndex] & 2048) + { + indlist[11] = vertexIndicesZ0[getIndex(x,y+1)]; + assert(indlist[11] != -1); + } + + for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3) + { + uint32 ind0 = indlist[triTable[iCubeIndex][i ]]; + uint32 ind1 = indlist[triTable[iCubeIndex][i+1]]; + uint32 ind2 = indlist[triTable[iCubeIndex][i+2]]; + + singleMaterialPatch->m_vecTriangleIndices.push_back(ind0); + singleMaterialPatch->m_vecTriangleIndices.push_back(ind1); + singleMaterialPatch->m_vecTriangleIndices.push_back(ind2); + }//For each triangle + }while(volIter.moveForwardInRegionXYZ());//For each cell + } +} \ No newline at end of file diff --git a/library/source/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.cpp b/library/source/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.cpp new file mode 100644 index 00000000..9aebbe1c --- /dev/null +++ b/library/source/PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.cpp @@ -0,0 +1,353 @@ +#pragma region License +/****************************************************************************** +This file is part of the PolyVox library +Copyright (C) 2006 David Williams + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +******************************************************************************/ +#pragma endregion + +#include "PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h" + +#include "PolyVoxCore/BlockVolume.h" +#include "PolyVoxCore/BlockVolumeIterator.h" +#include "PolyVoxCore/IndexedSurfacePatch.h" +#include "PolyVoxCore/MarchingCubesTables.h" +#include "PolyVoxCore/Region.h" +#include "PolyVoxCore/SurfaceVertex.h" +#include "PolyVoxCore/Vector.h" + +namespace PolyVox +{ + void generateReferenceMeshDataForRegionImpl(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch) + { + static int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]; + static int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]; + static int32 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)); + + //When generating the mesh for a region we actually look one voxel outside it in the + // back, bottom, right direction. Protect against access violations by cropping region here + Region regVolume = volumeData->getEnclosingRegion(); + //regVolume.setUpperCorner(regVolume.getUpperCorner() - Vector3DInt32(1,1,1)); + region.cropTo(regVolume); + region.setUpperCorner(region.getUpperCorner() - Vector3DInt32(1,1,1)); + + //Offset from lower block corner + const Vector3DFloat offset = static_cast(region.getLowerCorner()); + + Vector3DFloat vertlist[12]; + Vector3DFloat normlist[12]; + uint8 vertMaterials[12]; + BlockVolumeIterator volIter(*volumeData); + volIter.setValidRegion(region); + + ////////////////////////////////////////////////////////////////////////// + //Get mesh data + ////////////////////////////////////////////////////////////////////////// + + //Iterate over each cell in the region + volIter.setPosition(region.getLowerCorner().getX(),region.getLowerCorner().getY(), region.getLowerCorner().getZ()); + while(volIter.moveForwardInRegionXYZ()) + { + //Current position + const uint16 x = volIter.getPosX(); + const uint16 y = volIter.getPosY(); + const uint16 z = volIter.getPosZ(); + + //Voxels values + const uint8 v000 = volIter.getVoxel(); + const uint8 v100 = volIter.peekVoxel1px0py0pz(); + const uint8 v010 = volIter.peekVoxel0px1py0pz(); + const uint8 v110 = volIter.peekVoxel1px1py0pz(); + const uint8 v001 = volIter.peekVoxel0px0py1pz(); + const uint8 v101 = volIter.peekVoxel1px0py1pz(); + const uint8 v011 = volIter.peekVoxel0px1py1pz(); + const uint8 v111 = volIter.peekVoxel1px1py1pz(); + + //Determine the index into the edge table which tells us which vertices are inside of the surface + uint8 iCubeIndex = 0; + + if (v000 == 0) iCubeIndex |= 1; + if (v100 == 0) iCubeIndex |= 2; + if (v110 == 0) iCubeIndex |= 4; + if (v010 == 0) iCubeIndex |= 8; + if (v001 == 0) iCubeIndex |= 16; + if (v101 == 0) iCubeIndex |= 32; + if (v111 == 0) iCubeIndex |= 64; + if (v011 == 0) iCubeIndex |= 128; + + /* Cube is entirely in/out of the surface */ + if (edgeTable[iCubeIndex] == 0) + { + continue; + } + + /* Find the vertices where the surface intersects the cube */ + if (edgeTable[iCubeIndex] & 1) + { + vertlist[0].setX(x + 0.5f); + vertlist[0].setY(y); + vertlist[0].setZ(z); + normlist[0].setX(v000 > v100 ? 1.0f : -1.0f); + normlist[0].setY(0.0f); + normlist[0].setZ(0.0f); + vertMaterials[0] = v000 | v100; //Because one of these is 0, the or operation takes the max. + } + if (edgeTable[iCubeIndex] & 2) + { + vertlist[1].setX(x + 1.0f); + vertlist[1].setY(y + 0.5f); + vertlist[1].setZ(z); + normlist[1].setX(0.0f); + normlist[1].setY(v100 > v110 ? 1.0f : -1.0f); + normlist[1].setZ(0.0f); + vertMaterials[1] = v100 | v110; + } + if (edgeTable[iCubeIndex] & 4) + { + vertlist[2].setX(x + 0.5f); + vertlist[2].setY(y + 1.0f); + vertlist[2].setZ(z); + normlist[2].setX(v010 > v110 ? 1.0f : -1.0f); + normlist[2].setY(0.0f); + normlist[2].setZ(0.0f); + vertMaterials[2] = v010 | v110; + } + if (edgeTable[iCubeIndex] & 8) + { + vertlist[3].setX(x); + vertlist[3].setY(y + 0.5f); + vertlist[3].setZ(z); + normlist[3].setX(0.0f); + normlist[3].setY(v000 > v010 ? 1.0f : -1.0f); + normlist[3].setZ(0.0f); + vertMaterials[3] = v000 | v010; + } + if (edgeTable[iCubeIndex] & 16) + { + vertlist[4].setX(x + 0.5f); + vertlist[4].setY(y); + vertlist[4].setZ(z + 1.0f); + normlist[4].setX(v001 > v101 ? 1.0f : -1.0f); + normlist[4].setY(0.0f); + normlist[4].setZ(0.0f); + vertMaterials[4] = v001 | v101; + } + if (edgeTable[iCubeIndex] & 32) + { + vertlist[5].setX(x + 1.0f); + vertlist[5].setY(y + 0.5f); + vertlist[5].setZ(z + 1.0f); + normlist[5].setX(0.0f); + normlist[5].setY(v101 > v111 ? 1.0f : -1.0f); + normlist[5].setZ(0.0f); + vertMaterials[5] = v101 | v111; + } + if (edgeTable[iCubeIndex] & 64) + { + vertlist[6].setX(x + 0.5f); + vertlist[6].setY(y + 1.0f); + vertlist[6].setZ(z + 1.0f); + normlist[6].setX(v011 > v111 ? 1.0f : -1.0f); + normlist[6].setY(0.0f); + normlist[6].setZ(0.0f); + vertMaterials[6] = v011 | v111; + } + if (edgeTable[iCubeIndex] & 128) + { + vertlist[7].setX(x); + vertlist[7].setY(y + 0.5f); + vertlist[7].setZ(z + 1.0f); + normlist[7].setX(0.0f); + normlist[7].setY(v001 > v011 ? 1.0f : -1.0f); + normlist[7].setZ(0.0f); + vertMaterials[7] = v001 | v011; + } + if (edgeTable[iCubeIndex] & 256) + { + vertlist[8].setX(x); + vertlist[8].setY(y); + vertlist[8].setZ(z + 0.5f); + normlist[8].setX(0.0f); + normlist[8].setY(0.0f); + normlist[8].setZ(v000 > v001 ? 1.0f : -1.0f); + vertMaterials[8] = v000 | v001; + } + if (edgeTable[iCubeIndex] & 512) + { + vertlist[9].setX(x + 1.0f); + vertlist[9].setY(y); + vertlist[9].setZ(z + 0.5f); + normlist[9].setX(0.0f); + normlist[9].setY(0.0f); + normlist[9].setZ(v100 > v101 ? 1.0f : -1.0f); + vertMaterials[9] = v100 | v101; + } + if (edgeTable[iCubeIndex] & 1024) + { + vertlist[10].setX(x + 1.0f); + vertlist[10].setY(y + 1.0f); + vertlist[10].setZ(z + 0.5f); + normlist[10].setX(0.0f); + normlist[10].setY(0.0f); + normlist[10].setZ(v110 > v111 ? 1.0f : -1.0f); + vertMaterials[10] = v110 | v111; + } + if (edgeTable[iCubeIndex] & 2048) + { + vertlist[11].setX(x); + vertlist[11].setY(y + 1.0f); + vertlist[11].setZ(z + 0.5f); + normlist[11].setX(0.0f); + normlist[11].setY(0.0f); + normlist[11].setZ(v010 > v011 ? 1.0f : -1.0f); + vertMaterials[11] = v010 | v011; + } + + for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3) + { + //The three vertices forming a triangle + const Vector3DFloat vertex0 = vertlist[triTable[iCubeIndex][i ]] - offset; + const Vector3DFloat vertex1 = vertlist[triTable[iCubeIndex][i+1]] - offset; + const Vector3DFloat vertex2 = vertlist[triTable[iCubeIndex][i+2]] - offset; + + const Vector3DFloat normal0 = normlist[triTable[iCubeIndex][i ]]; + const Vector3DFloat normal1 = normlist[triTable[iCubeIndex][i+1]]; + const Vector3DFloat normal2 = normlist[triTable[iCubeIndex][i+2]]; + + //Cast to floats and divide by two. + //const Vector3DFloat vertex0AsFloat = (static_cast(vertex0) / 2.0f) - offset; + //const Vector3DFloat vertex1AsFloat = (static_cast(vertex1) / 2.0f) - offset; + //const Vector3DFloat vertex2AsFloat = (static_cast(vertex2) / 2.0f) - offset; + + const uint8 material0 = vertMaterials[triTable[iCubeIndex][i ]]; + const uint8 material1 = vertMaterials[triTable[iCubeIndex][i+1]]; + const uint8 material2 = vertMaterials[triTable[iCubeIndex][i+2]]; + + //If all the materials are the same, we just need one triangle for that material with all the alphas set high. + SurfaceVertex v0(vertex0, normal0, material0 + 0.1f); + SurfaceVertex v1(vertex1, normal1, material1 + 0.1f); + SurfaceVertex v2(vertex2, normal2, material2 + 0.1f); + + //singleMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1); + + int32 index = getIndexFor(v0.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); + if(index == -1) + { + singleMaterialPatch->m_vecVertices.push_back(v0); + singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); + setIndexFor(v0.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); + } + else + { + singleMaterialPatch->m_vecTriangleIndices.push_back(index); + } + + index = getIndexFor(v1.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); + if(index == -1) + { + singleMaterialPatch->m_vecVertices.push_back(v1); + singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); + setIndexFor(v1.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); + } + else + { + singleMaterialPatch->m_vecTriangleIndices.push_back(index); + } + + index = getIndexFor(v2.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); + if(index == -1) + { + singleMaterialPatch->m_vecVertices.push_back(v2); + singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); + setIndexFor(v2.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); + } + else + { + singleMaterialPatch->m_vecTriangleIndices.push_back(index); + } + }//For each triangle + }//For each cell + } + + int32 getIndexFor(const Vector3DFloat& pos, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]) + { + assert(pos.getX() >= 0.0f); + assert(pos.getY() >= 0.0f); + assert(pos.getZ() >= 0.0f); + assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH); + assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH); + assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH); + + float xIntPart; + float xFracPart = std::modf(pos.getX(), &xIntPart); + float yIntPart; + float yFracPart = std::modf(pos.getY(), &yIntPart); + float zIntPart; + float zFracPart = std::modf(pos.getZ(), &zIntPart); + + //Of all the fractional parts, two should be zero and one should have a value. + if(xFracPart > 0.000001f) + { + return vertexIndicesX[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; + } + if(yFracPart > 0.000001f) + { + return vertexIndicesY[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; + } + if(zFracPart > 0.000001f) + { + return vertexIndicesZ[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; + } + while(true); + } + + void setIndexFor(const Vector3DFloat& pos, int32 newIndex, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]) + { + assert(pos.getX() >= 0.0f); + assert(pos.getY() >= 0.0f); + assert(pos.getZ() >= 0.0f); + assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH); + assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH); + assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH); + + assert(newIndex < 10000); + + float xIntPart; + float xFracPart = std::modf(pos.getX(), &xIntPart); + float yIntPart; + float yFracPart = std::modf(pos.getY(), &yIntPart); + float zIntPart; + float zFracPart = std::modf(pos.getZ(), &zIntPart); + + //Of all the fractional parts, two should be zero and one should have a value. + if(xFracPart > 0.000001f) + { + vertexIndicesX[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; + } + if(yFracPart > 0.000001f) + { + vertexIndicesY[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; + } + if(zFracPart > 0.000001f) + { + vertexIndicesZ[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; + } + } +} \ No newline at end of file diff --git a/library/source/PolyVoxCore/SurfaceExtractors.cpp b/library/source/PolyVoxCore/SurfaceExtractors.cpp index 9d132df3..ba1849e7 100644 --- a/library/source/PolyVoxCore/SurfaceExtractors.cpp +++ b/library/source/PolyVoxCore/SurfaceExtractors.cpp @@ -7,847 +7,30 @@ #include "PolyVoxCore/Region.h" #include "PolyVoxCore/RegionGeometry.h" #include "PolyVoxCore/SurfaceAdjusters.h" -#include "PolyVoxCore/SurfaceExtractorsDecimated.h" #include "PolyVoxCore/BlockVolumeIterator.h" +#include "PolyVoxCore/PolyVoxImpl/DecimatedSurfaceExtractor.h" +#include "PolyVoxCore/PolyVoxImpl/FastSurfaceExtractor.h" +#include "PolyVoxCore/PolyVoxImpl/ReferenceSurfaceExtractor.h" + #include using namespace std; namespace PolyVox { - uint32 getIndex(uint32 x, uint32 y) + void generateReferenceMeshDataForRegion(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch) { - return x + (y * (POLYVOX_REGION_SIDE_LENGTH+1)); + generateReferenceMeshDataForRegion(volumeData, region, singleMaterialPatch); } void generateRoughMeshDataForRegion(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch) - { - singleMaterialPatch->m_vecVertices.clear(); - singleMaterialPatch->m_vecTriangleIndices.clear(); - - //For edge indices - int32* vertexIndicesX0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - int32* vertexIndicesY0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - int32* vertexIndicesZ0 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - int32* vertexIndicesX1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - int32* vertexIndicesY1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - int32* vertexIndicesZ1 = new int32[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - - //Cell bitmasks - uint8* bitmask0 = new uint8[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - uint8* bitmask1 = new uint8[(POLYVOX_REGION_SIDE_LENGTH+1) * (POLYVOX_REGION_SIDE_LENGTH+1)]; - - //When generating the mesh for a region we actually look one voxel outside it in the - // back, bottom, right direction. Protect against access violations by cropping region here - Region regVolume = volumeData->getEnclosingRegion(); - regVolume.setUpperCorner(regVolume.getUpperCorner() - Vector3DInt32(1,1,1)); - region.cropTo(regVolume); - - //Offset from volume corner - const Vector3DFloat offset = static_cast(region.getLowerCorner()); - - //Create a region corresponding to the first slice - Region regSlice0(region); - regSlice0.setUpperCorner(Vector3DInt32(regSlice0.getUpperCorner().getX(),regSlice0.getUpperCorner().getY(),regSlice0.getLowerCorner().getZ())); - - //Iterator to access the volume data - BlockVolumeIterator volIter(*volumeData); - - //Compute bitmask for initial slice - uint32 uNoOfNonEmptyCellsForSlice0 = computeInitialRoughBitmaskForSlice(volIter, regSlice0, offset, bitmask0); - if(uNoOfNonEmptyCellsForSlice0 != 0) - { - //If there were some non-empty cells then generate initial slice vertices for them - generateRoughVerticesForSlice(volIter,regSlice0, offset, bitmask0, singleMaterialPatch, vertexIndicesX0, vertexIndicesY0, vertexIndicesZ0); - } - - for(uint32 uSlice = 0; ((uSlice <= POLYVOX_REGION_SIDE_LENGTH-1) && (uSlice + offset.getZ() < region.getUpperCorner().getZ())); ++uSlice) - { - Region regSlice1(regSlice0); - regSlice1.shift(Vector3DInt32(0,0,1)); - - uint32 uNoOfNonEmptyCellsForSlice1 = computeRoughBitmaskForSliceFromPrevious(volIter, regSlice1, offset, bitmask1, bitmask0); - - if(uNoOfNonEmptyCellsForSlice1 != 0) - { - generateRoughVerticesForSlice(volIter,regSlice1, offset, bitmask1, singleMaterialPatch, vertexIndicesX1, vertexIndicesY1, vertexIndicesZ1); - } - - if((uNoOfNonEmptyCellsForSlice0 != 0) || (uNoOfNonEmptyCellsForSlice1 != 0)) - { - generateRoughIndicesForSlice(volIter, regSlice0, singleMaterialPatch, offset, bitmask0, bitmask1, vertexIndicesX0, vertexIndicesY0, vertexIndicesZ0, vertexIndicesX1, vertexIndicesY1, vertexIndicesZ1); - } - - std::swap(uNoOfNonEmptyCellsForSlice0, uNoOfNonEmptyCellsForSlice1); - std::swap(bitmask0, bitmask1); - std::swap(vertexIndicesX0, vertexIndicesX1); - std::swap(vertexIndicesY0, vertexIndicesY1); - std::swap(vertexIndicesZ0, vertexIndicesZ1); - - regSlice0 = regSlice1; - } - - delete[] bitmask0; - delete[] bitmask1; - delete[] vertexIndicesX0; - delete[] vertexIndicesX1; - delete[] vertexIndicesY0; - delete[] vertexIndicesY1; - delete[] vertexIndicesZ0; - delete[] vertexIndicesZ1; - } - - uint32 computeInitialRoughBitmaskForSlice(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8* bitmask) { - uint32 uNoOfNonEmptyCells = 0; - - //Iterate over each cell in the region - volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); - volIter.setValidRegion(regSlice); - do - { - //Current position - const uint16 x = volIter.getPosX() - offset.getX(); - const uint16 y = volIter.getPosY() - offset.getY(); - - //Determine the index into the edge table which tells us which vertices are inside of the surface - uint8 iCubeIndex = 0; - - if((x==0) && (y==0)) - { - const uint8 v000 = volIter.getVoxel(); - const uint8 v100 = volIter.peekVoxel1px0py0pz(); - const uint8 v010 = volIter.peekVoxel0px1py0pz(); - const uint8 v110 = volIter.peekVoxel1px1py0pz(); - - const uint8 v001 = volIter.peekVoxel0px0py1pz(); - const uint8 v101 = volIter.peekVoxel1px0py1pz(); - const uint8 v011 = volIter.peekVoxel0px1py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - if (v000 == 0) iCubeIndex |= 1; - if (v100 == 0) iCubeIndex |= 2; - if (v110 == 0) iCubeIndex |= 4; - if (v010 == 0) iCubeIndex |= 8; - if (v001 == 0) iCubeIndex |= 16; - if (v101 == 0) iCubeIndex |= 32; - if (v111 == 0) iCubeIndex |= 64; - if (v011 == 0) iCubeIndex |= 128; - } - else if((x>0) && y==0) - { - const uint8 v100 = volIter.peekVoxel1px0py0pz(); - const uint8 v110 = volIter.peekVoxel1px1py0pz(); - - const uint8 v101 = volIter.peekVoxel1px0py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //x - uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; - uint8 srcBit6 = iPreviousCubeIndexX & 64; - uint8 destBit7 = srcBit6 << 1; - - uint8 srcBit5 = iPreviousCubeIndexX & 32; - uint8 destBit4 = srcBit5 >> 1; - - uint8 srcBit2 = iPreviousCubeIndexX & 4; - uint8 destBit3 = srcBit2 << 1; - - uint8 srcBit1 = iPreviousCubeIndexX & 2; - uint8 destBit0 = srcBit1 >> 1; - - iCubeIndex |= destBit0; - if (v100 == 0) iCubeIndex |= 2; - if (v110 == 0) iCubeIndex |= 4; - iCubeIndex |= destBit3; - iCubeIndex |= destBit4; - if (v101 == 0) iCubeIndex |= 32; - if (v111 == 0) iCubeIndex |= 64; - iCubeIndex |= destBit7; - } - else if((x==0) && (y>0)) - { - const uint8 v010 = volIter.peekVoxel0px1py0pz(); - const uint8 v110 = volIter.peekVoxel1px1py0pz(); - - const uint8 v011 = volIter.peekVoxel0px1py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //y - uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; - uint8 srcBit7 = iPreviousCubeIndexY & 128; - uint8 destBit4 = srcBit7 >> 3; - - uint8 srcBit6 = iPreviousCubeIndexY & 64; - uint8 destBit5 = srcBit6 >> 1; - - uint8 srcBit3 = iPreviousCubeIndexY & 8; - uint8 destBit0 = srcBit3 >> 3; - - uint8 srcBit2 = iPreviousCubeIndexY & 4; - uint8 destBit1 = srcBit2 >> 1; - - iCubeIndex |= destBit0; - iCubeIndex |= destBit1; - if (v110 == 0) iCubeIndex |= 4; - if (v010 == 0) iCubeIndex |= 8; - iCubeIndex |= destBit4; - iCubeIndex |= destBit5; - if (v111 == 0) iCubeIndex |= 64; - if (v011 == 0) iCubeIndex |= 128; - } - else - { - const uint8 v110 = volIter.peekVoxel1px1py0pz(); - - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //y - uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; - uint8 srcBit7 = iPreviousCubeIndexY & 128; - uint8 destBit4 = srcBit7 >> 3; - - uint8 srcBit6 = iPreviousCubeIndexY & 64; - uint8 destBit5 = srcBit6 >> 1; - - uint8 srcBit3 = iPreviousCubeIndexY & 8; - uint8 destBit0 = srcBit3 >> 3; - - uint8 srcBit2 = iPreviousCubeIndexY & 4; - uint8 destBit1 = srcBit2 >> 1; - - //x - uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; - srcBit6 = iPreviousCubeIndexX & 64; - uint8 destBit7 = srcBit6 << 1; - - srcBit2 = iPreviousCubeIndexX & 4; - uint8 destBit3 = srcBit2 << 1; - - iCubeIndex |= destBit0; - iCubeIndex |= destBit1; - if (v110 == 0) iCubeIndex |= 4; - iCubeIndex |= destBit3; - iCubeIndex |= destBit4; - iCubeIndex |= destBit5; - if (v111 == 0) iCubeIndex |= 64; - iCubeIndex |= destBit7; - } - - //Save the bitmask - bitmask[getIndex(x,y)] = iCubeIndex; - - if(edgeTable[iCubeIndex] != 0) - { - ++uNoOfNonEmptyCells; - } - - }while(volIter.moveForwardInRegionXYZ());//For each cell - - return uNoOfNonEmptyCells; + generateRoughMeshDataForRegionImpl(volumeData, region, singleMaterialPatch); } - uint32 computeRoughBitmaskForSliceFromPrevious(BlockVolumeIterator& volIter, const Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, uint8* previousBitmask) + void generateDecimatedMeshDataForRegion(BlockVolume* volumeData, uint8 uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch) { - uint32 uNoOfNonEmptyCells = 0; - - //Iterate over each cell in the region - volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); - volIter.setValidRegion(regSlice); - do - { - //Current position - const uint16 x = volIter.getPosX() - offset.getX(); - const uint16 y = volIter.getPosY() - offset.getY(); - - //Determine the index into the edge table which tells us which vertices are inside of the surface - uint8 iCubeIndex = 0; - - if((x==0) && (y==0)) - { - const uint8 v001 = volIter.peekVoxel0px0py1pz(); - const uint8 v101 = volIter.peekVoxel1px0py1pz(); - const uint8 v011 = volIter.peekVoxel0px1py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //z - uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; - iCubeIndex = iPreviousCubeIndexZ >> 4; - - if (v001 == 0) iCubeIndex |= 16; - if (v101 == 0) iCubeIndex |= 32; - if (v111 == 0) iCubeIndex |= 64; - if (v011 == 0) iCubeIndex |= 128; - } - else if((x>0) && y==0) - { - const uint8 v101 = volIter.peekVoxel1px0py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //z - uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; - iCubeIndex = iPreviousCubeIndexZ >> 4; - - //x - uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; - uint8 srcBit6 = iPreviousCubeIndexX & 64; - uint8 destBit7 = srcBit6 << 1; - - uint8 srcBit5 = iPreviousCubeIndexX & 32; - uint8 destBit4 = srcBit5 >> 1; - - iCubeIndex |= destBit4; - if (v101 == 0) iCubeIndex |= 32; - if (v111 == 0) iCubeIndex |= 64; - iCubeIndex |= destBit7; - } - else if((x==0) && (y>0)) - { - const uint8 v011 = volIter.peekVoxel0px1py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //z - uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; - iCubeIndex = iPreviousCubeIndexZ >> 4; - - //y - uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; - uint8 srcBit7 = iPreviousCubeIndexY & 128; - uint8 destBit4 = srcBit7 >> 3; - - uint8 srcBit6 = iPreviousCubeIndexY & 64; - uint8 destBit5 = srcBit6 >> 1; - - iCubeIndex |= destBit4; - iCubeIndex |= destBit5; - if (v111 == 0) iCubeIndex |= 64; - if (v011 == 0) iCubeIndex |= 128; - } - else - { - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //z - uint8 iPreviousCubeIndexZ = previousBitmask[getIndex(x,y)]; - iCubeIndex = iPreviousCubeIndexZ >> 4; - - //y - uint8 iPreviousCubeIndexY = bitmask[getIndex(x,y-1)]; - uint8 srcBit7 = iPreviousCubeIndexY & 128; - uint8 destBit4 = srcBit7 >> 3; - - uint8 srcBit6 = iPreviousCubeIndexY & 64; - uint8 destBit5 = srcBit6 >> 1; - - //x - uint8 iPreviousCubeIndexX = bitmask[getIndex(x-1,y)]; - srcBit6 = iPreviousCubeIndexX & 64; - uint8 destBit7 = srcBit6 << 1; - - iCubeIndex |= destBit4; - iCubeIndex |= destBit5; - if (v111 == 0) iCubeIndex |= 64; - iCubeIndex |= destBit7; - } - - //Save the bitmask - bitmask[getIndex(x,y)] = iCubeIndex; - - if(edgeTable[iCubeIndex] != 0) - { - ++uNoOfNonEmptyCells; - } - - }while(volIter.moveForwardInRegionXYZ());//For each cell - - return uNoOfNonEmptyCells; - } - - void generateRoughVerticesForSlice(BlockVolumeIterator& volIter, Region& regSlice, const Vector3DFloat& offset, uint8* bitmask, IndexedSurfacePatch* singleMaterialPatch,int32 vertexIndicesX[],int32 vertexIndicesY[],int32 vertexIndicesZ[]) - { - //Iterate over each cell in the region - volIter.setPosition(regSlice.getLowerCorner().getX(),regSlice.getLowerCorner().getY(), regSlice.getLowerCorner().getZ()); - volIter.setValidRegion(regSlice); - //while(volIter.moveForwardInRegionXYZ()) - do - { - //Current position - const uint16 x = volIter.getPosX() - offset.getX(); - const uint16 y = volIter.getPosY() - offset.getY(); - const uint16 z = volIter.getPosZ() - offset.getZ(); - - const uint8 v000 = volIter.getVoxel(); - - //Determine the index into the edge table which tells us which vertices are inside of the surface - uint8 iCubeIndex = bitmask[getIndex(x,y)]; - - /* Cube is entirely in/out of the surface */ - if (edgeTable[iCubeIndex] == 0) - { - continue; - } - - /* Find the vertices where the surface intersects the cube */ - if (edgeTable[iCubeIndex] & 1) - { - if((x + offset.getX()) != regSlice.getUpperCorner().getX()) - { - const uint8 v100 = volIter.peekVoxel1px0py0pz(); - const Vector3DFloat v3dPosition(x + 0.5f, y, z); - const Vector3DFloat v3dNormal(v000 > v100 ? 1.0f : -1.0f, 0.0f, 0.0f); - const uint8 uMaterial = v000 | v100; //Because one of these is 0, the or operation takes the max. - const SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); - singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); - vertexIndicesX[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; - } - } - if (edgeTable[iCubeIndex] & 8) - { - if((y + offset.getY()) != regSlice.getUpperCorner().getY()) - { - const uint8 v010 = volIter.peekVoxel0px1py0pz(); - const Vector3DFloat v3dPosition(x, y + 0.5f, z); - const Vector3DFloat v3dNormal(0.0f, v000 > v010 ? 1.0f : -1.0f, 0.0f); - const uint8 uMaterial = v000 | v010; - SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); - singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); - vertexIndicesY[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; - } - } - if (edgeTable[iCubeIndex] & 256) - { - //if((z + offset.getZ()) != upperCorner.getZ()) - { - const uint8 v001 = volIter.peekVoxel0px0py1pz(); - const Vector3DFloat v3dPosition(x, y, z + 0.5f); - const Vector3DFloat v3dNormal(0.0f, 0.0f, v000 > v001 ? 1.0f : -1.0f); - const uint8 uMaterial = v000 | v001; - SurfaceVertex surfaceVertex(v3dPosition, v3dNormal, uMaterial); - singleMaterialPatch->m_vecVertices.push_back(surfaceVertex); - vertexIndicesZ[getIndex(x,y)] = singleMaterialPatch->m_vecVertices.size()-1; - } - } - }while(volIter.moveForwardInRegionXYZ());//For each cell - } - - void generateRoughIndicesForSlice(BlockVolumeIterator& volIter, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8* bitmask0, uint8* bitmask1, int32 vertexIndicesX0[],int32 vertexIndicesY0[],int32 vertexIndicesZ0[], int32 vertexIndicesX1[],int32 vertexIndicesY1[],int32 vertexIndicesZ1[]) - { - uint32 indlist[12]; - - Region regCroppedSlice(regSlice); - regCroppedSlice.setUpperCorner(regCroppedSlice.getUpperCorner() - Vector3DInt32(1,1,0)); - - volIter.setPosition(regCroppedSlice.getLowerCorner().getX(),regCroppedSlice.getLowerCorner().getY(), regCroppedSlice.getLowerCorner().getZ()); - volIter.setValidRegion(regCroppedSlice); - do - { - //Current position - const uint16 x = volIter.getPosX() - offset.getX(); - const uint16 y = volIter.getPosY() - offset.getY(); - const uint16 z = volIter.getPosZ() - offset.getZ(); - - //Determine the index into the edge table which tells us which vertices are inside of the surface - uint8 iCubeIndex = bitmask0[getIndex(x,y)]; - - /* Cube is entirely in/out of the surface */ - if (edgeTable[iCubeIndex] == 0) - { - continue; - } - - /* Find the vertices where the surface intersects the cube */ - if (edgeTable[iCubeIndex] & 1) - { - indlist[0] = vertexIndicesX0[getIndex(x,y)]; - assert(indlist[0] != -1); - } - if (edgeTable[iCubeIndex] & 2) - { - indlist[1] = vertexIndicesY0[getIndex(x+1,y)]; - assert(indlist[1] != -1); - } - if (edgeTable[iCubeIndex] & 4) - { - indlist[2] = vertexIndicesX0[getIndex(x,y+1)]; - assert(indlist[2] != -1); - } - if (edgeTable[iCubeIndex] & 8) - { - indlist[3] = vertexIndicesY0[getIndex(x,y)]; - assert(indlist[3] != -1); - } - if (edgeTable[iCubeIndex] & 16) - { - indlist[4] = vertexIndicesX1[getIndex(x,y)]; - assert(indlist[4] != -1); - } - if (edgeTable[iCubeIndex] & 32) - { - indlist[5] = vertexIndicesY1[getIndex(x+1,y)]; - assert(indlist[5] != -1); - } - if (edgeTable[iCubeIndex] & 64) - { - indlist[6] = vertexIndicesX1[getIndex(x,y+1)]; - assert(indlist[6] != -1); - } - if (edgeTable[iCubeIndex] & 128) - { - indlist[7] = vertexIndicesY1[getIndex(x,y)]; - assert(indlist[7] != -1); - } - if (edgeTable[iCubeIndex] & 256) - { - indlist[8] = vertexIndicesZ0[getIndex(x,y)]; - assert(indlist[8] != -1); - } - if (edgeTable[iCubeIndex] & 512) - { - indlist[9] = vertexIndicesZ0[getIndex(x+1,y)]; - assert(indlist[9] != -1); - } - if (edgeTable[iCubeIndex] & 1024) - { - indlist[10] = vertexIndicesZ0[getIndex(x+1,y+1)]; - assert(indlist[10] != -1); - } - if (edgeTable[iCubeIndex] & 2048) - { - indlist[11] = vertexIndicesZ0[getIndex(x,y+1)]; - assert(indlist[11] != -1); - } - - for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3) - { - uint32 ind0 = indlist[triTable[iCubeIndex][i ]]; - uint32 ind1 = indlist[triTable[iCubeIndex][i+1]]; - uint32 ind2 = indlist[triTable[iCubeIndex][i+2]]; - - singleMaterialPatch->m_vecTriangleIndices.push_back(ind0); - singleMaterialPatch->m_vecTriangleIndices.push_back(ind1); - singleMaterialPatch->m_vecTriangleIndices.push_back(ind2); - }//For each triangle - }while(volIter.moveForwardInRegionXYZ());//For each cell - } - - void generateReferenceMeshDataForRegion(BlockVolume* volumeData, Region region, IndexedSurfacePatch* singleMaterialPatch) - { - static int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]; - static int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]; - static int32 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)); - - //When generating the mesh for a region we actually look one voxel outside it in the - // back, bottom, right direction. Protect against access violations by cropping region here - Region regVolume = volumeData->getEnclosingRegion(); - //regVolume.setUpperCorner(regVolume.getUpperCorner() - Vector3DInt32(1,1,1)); - region.cropTo(regVolume); - region.setUpperCorner(region.getUpperCorner() - Vector3DInt32(1,1,1)); - - //Offset from lower block corner - const Vector3DFloat offset = static_cast(region.getLowerCorner()); - - Vector3DFloat vertlist[12]; - Vector3DFloat normlist[12]; - uint8 vertMaterials[12]; - BlockVolumeIterator volIter(*volumeData); - volIter.setValidRegion(region); - - ////////////////////////////////////////////////////////////////////////// - //Get mesh data - ////////////////////////////////////////////////////////////////////////// - - //Iterate over each cell in the region - volIter.setPosition(region.getLowerCorner().getX(),region.getLowerCorner().getY(), region.getLowerCorner().getZ()); - while(volIter.moveForwardInRegionXYZ()) - { - //Current position - const uint16 x = volIter.getPosX(); - const uint16 y = volIter.getPosY(); - const uint16 z = volIter.getPosZ(); - - //Voxels values - const uint8 v000 = volIter.getVoxel(); - const uint8 v100 = volIter.peekVoxel1px0py0pz(); - const uint8 v010 = volIter.peekVoxel0px1py0pz(); - const uint8 v110 = volIter.peekVoxel1px1py0pz(); - const uint8 v001 = volIter.peekVoxel0px0py1pz(); - const uint8 v101 = volIter.peekVoxel1px0py1pz(); - const uint8 v011 = volIter.peekVoxel0px1py1pz(); - const uint8 v111 = volIter.peekVoxel1px1py1pz(); - - //Determine the index into the edge table which tells us which vertices are inside of the surface - uint8 iCubeIndex = 0; - - if (v000 == 0) iCubeIndex |= 1; - if (v100 == 0) iCubeIndex |= 2; - if (v110 == 0) iCubeIndex |= 4; - if (v010 == 0) iCubeIndex |= 8; - if (v001 == 0) iCubeIndex |= 16; - if (v101 == 0) iCubeIndex |= 32; - if (v111 == 0) iCubeIndex |= 64; - if (v011 == 0) iCubeIndex |= 128; - - /* Cube is entirely in/out of the surface */ - if (edgeTable[iCubeIndex] == 0) - { - continue; - } - - /* Find the vertices where the surface intersects the cube */ - if (edgeTable[iCubeIndex] & 1) - { - vertlist[0].setX(x + 0.5f); - vertlist[0].setY(y); - vertlist[0].setZ(z); - normlist[0].setX(v000 > v100 ? 1.0f : -1.0f); - normlist[0].setY(0.0f); - normlist[0].setZ(0.0f); - vertMaterials[0] = v000 | v100; //Because one of these is 0, the or operation takes the max. - } - if (edgeTable[iCubeIndex] & 2) - { - vertlist[1].setX(x + 1.0f); - vertlist[1].setY(y + 0.5f); - vertlist[1].setZ(z); - normlist[1].setX(0.0f); - normlist[1].setY(v100 > v110 ? 1.0f : -1.0f); - normlist[1].setZ(0.0f); - vertMaterials[1] = v100 | v110; - } - if (edgeTable[iCubeIndex] & 4) - { - vertlist[2].setX(x + 0.5f); - vertlist[2].setY(y + 1.0f); - vertlist[2].setZ(z); - normlist[2].setX(v010 > v110 ? 1.0f : -1.0f); - normlist[2].setY(0.0f); - normlist[2].setZ(0.0f); - vertMaterials[2] = v010 | v110; - } - if (edgeTable[iCubeIndex] & 8) - { - vertlist[3].setX(x); - vertlist[3].setY(y + 0.5f); - vertlist[3].setZ(z); - normlist[3].setX(0.0f); - normlist[3].setY(v000 > v010 ? 1.0f : -1.0f); - normlist[3].setZ(0.0f); - vertMaterials[3] = v000 | v010; - } - if (edgeTable[iCubeIndex] & 16) - { - vertlist[4].setX(x + 0.5f); - vertlist[4].setY(y); - vertlist[4].setZ(z + 1.0f); - normlist[4].setX(v001 > v101 ? 1.0f : -1.0f); - normlist[4].setY(0.0f); - normlist[4].setZ(0.0f); - vertMaterials[4] = v001 | v101; - } - if (edgeTable[iCubeIndex] & 32) - { - vertlist[5].setX(x + 1.0f); - vertlist[5].setY(y + 0.5f); - vertlist[5].setZ(z + 1.0f); - normlist[5].setX(0.0f); - normlist[5].setY(v101 > v111 ? 1.0f : -1.0f); - normlist[5].setZ(0.0f); - vertMaterials[5] = v101 | v111; - } - if (edgeTable[iCubeIndex] & 64) - { - vertlist[6].setX(x + 0.5f); - vertlist[6].setY(y + 1.0f); - vertlist[6].setZ(z + 1.0f); - normlist[6].setX(v011 > v111 ? 1.0f : -1.0f); - normlist[6].setY(0.0f); - normlist[6].setZ(0.0f); - vertMaterials[6] = v011 | v111; - } - if (edgeTable[iCubeIndex] & 128) - { - vertlist[7].setX(x); - vertlist[7].setY(y + 0.5f); - vertlist[7].setZ(z + 1.0f); - normlist[7].setX(0.0f); - normlist[7].setY(v001 > v011 ? 1.0f : -1.0f); - normlist[7].setZ(0.0f); - vertMaterials[7] = v001 | v011; - } - if (edgeTable[iCubeIndex] & 256) - { - vertlist[8].setX(x); - vertlist[8].setY(y); - vertlist[8].setZ(z + 0.5f); - normlist[8].setX(0.0f); - normlist[8].setY(0.0f); - normlist[8].setZ(v000 > v001 ? 1.0f : -1.0f); - vertMaterials[8] = v000 | v001; - } - if (edgeTable[iCubeIndex] & 512) - { - vertlist[9].setX(x + 1.0f); - vertlist[9].setY(y); - vertlist[9].setZ(z + 0.5f); - normlist[9].setX(0.0f); - normlist[9].setY(0.0f); - normlist[9].setZ(v100 > v101 ? 1.0f : -1.0f); - vertMaterials[9] = v100 | v101; - } - if (edgeTable[iCubeIndex] & 1024) - { - vertlist[10].setX(x + 1.0f); - vertlist[10].setY(y + 1.0f); - vertlist[10].setZ(z + 0.5f); - normlist[10].setX(0.0f); - normlist[10].setY(0.0f); - normlist[10].setZ(v110 > v111 ? 1.0f : -1.0f); - vertMaterials[10] = v110 | v111; - } - if (edgeTable[iCubeIndex] & 2048) - { - vertlist[11].setX(x); - vertlist[11].setY(y + 1.0f); - vertlist[11].setZ(z + 0.5f); - normlist[11].setX(0.0f); - normlist[11].setY(0.0f); - normlist[11].setZ(v010 > v011 ? 1.0f : -1.0f); - vertMaterials[11] = v010 | v011; - } - - for (int i=0;triTable[iCubeIndex][i]!=-1;i+=3) - { - //The three vertices forming a triangle - const Vector3DFloat vertex0 = vertlist[triTable[iCubeIndex][i ]] - offset; - const Vector3DFloat vertex1 = vertlist[triTable[iCubeIndex][i+1]] - offset; - const Vector3DFloat vertex2 = vertlist[triTable[iCubeIndex][i+2]] - offset; - - const Vector3DFloat normal0 = normlist[triTable[iCubeIndex][i ]]; - const Vector3DFloat normal1 = normlist[triTable[iCubeIndex][i+1]]; - const Vector3DFloat normal2 = normlist[triTable[iCubeIndex][i+2]]; - - //Cast to floats and divide by two. - //const Vector3DFloat vertex0AsFloat = (static_cast(vertex0) / 2.0f) - offset; - //const Vector3DFloat vertex1AsFloat = (static_cast(vertex1) / 2.0f) - offset; - //const Vector3DFloat vertex2AsFloat = (static_cast(vertex2) / 2.0f) - offset; - - const uint8 material0 = vertMaterials[triTable[iCubeIndex][i ]]; - const uint8 material1 = vertMaterials[triTable[iCubeIndex][i+1]]; - const uint8 material2 = vertMaterials[triTable[iCubeIndex][i+2]]; - - //If all the materials are the same, we just need one triangle for that material with all the alphas set high. - SurfaceVertex v0(vertex0, normal0, material0 + 0.1f); - SurfaceVertex v1(vertex1, normal1, material1 + 0.1f); - SurfaceVertex v2(vertex2, normal2, material2 + 0.1f); - - //singleMaterialPatch->addTriangle(surfaceVertex0Alpha1, surfaceVertex1Alpha1, surfaceVertex2Alpha1); - - int32 index = getIndexFor(v0.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); - if(index == -1) - { - singleMaterialPatch->m_vecVertices.push_back(v0); - singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); - setIndexFor(v0.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); - } - else - { - singleMaterialPatch->m_vecTriangleIndices.push_back(index); - } - - index = getIndexFor(v1.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); - if(index == -1) - { - singleMaterialPatch->m_vecVertices.push_back(v1); - singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); - setIndexFor(v1.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); - } - else - { - singleMaterialPatch->m_vecTriangleIndices.push_back(index); - } - - index = getIndexFor(v2.getPosition(), vertexIndicesX, vertexIndicesY, vertexIndicesZ); - if(index == -1) - { - singleMaterialPatch->m_vecVertices.push_back(v2); - singleMaterialPatch->m_vecTriangleIndices.push_back(singleMaterialPatch->m_vecVertices.size()-1); - setIndexFor(v2.getPosition(), singleMaterialPatch->m_vecVertices.size()-1, vertexIndicesX, vertexIndicesY, vertexIndicesZ); - } - else - { - singleMaterialPatch->m_vecTriangleIndices.push_back(index); - } - }//For each triangle - }//For each cell - } - - int32 getIndexFor(const Vector3DFloat& pos, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]) - { - assert(pos.getX() >= 0.0f); - assert(pos.getY() >= 0.0f); - assert(pos.getZ() >= 0.0f); - assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH); - assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH); - assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH); - - float xIntPart; - float xFracPart = std::modf(pos.getX(), &xIntPart); - float yIntPart; - float yFracPart = std::modf(pos.getY(), &yIntPart); - float zIntPart; - float zFracPart = std::modf(pos.getZ(), &zIntPart); - - //Of all the fractional parts, two should be zero and one should have a value. - if(xFracPart > 0.000001f) - { - return vertexIndicesX[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; - } - if(yFracPart > 0.000001f) - { - return vertexIndicesY[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; - } - if(zFracPart > 0.000001f) - { - return vertexIndicesZ[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)]; - } - while(true); - } - - void setIndexFor(const Vector3DFloat& pos, int32 newIndex, int32 vertexIndicesX[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesY[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1], int32 vertexIndicesZ[POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1][POLYVOX_REGION_SIDE_LENGTH+1]) - { - assert(pos.getX() >= 0.0f); - assert(pos.getY() >= 0.0f); - assert(pos.getZ() >= 0.0f); - assert(pos.getX() <= POLYVOX_REGION_SIDE_LENGTH); - assert(pos.getY() <= POLYVOX_REGION_SIDE_LENGTH); - assert(pos.getZ() <= POLYVOX_REGION_SIDE_LENGTH); - - assert(newIndex < 10000); - - float xIntPart; - float xFracPart = std::modf(pos.getX(), &xIntPart); - float yIntPart; - float yFracPart = std::modf(pos.getY(), &yIntPart); - float zIntPart; - float zFracPart = std::modf(pos.getZ(), &zIntPart); - - //Of all the fractional parts, two should be zero and one should have a value. - if(xFracPart > 0.000001f) - { - vertexIndicesX[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; - } - if(yFracPart > 0.000001f) - { - vertexIndicesY[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; - } - if(zFracPart > 0.000001f) - { - vertexIndicesZ[static_cast(xIntPart)][static_cast(yIntPart)][static_cast(zIntPart)] = newIndex; - } + generateDecimatedMeshDataForRegionImpl(volumeData, uLevel, region, singleMaterialPatch); } }