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Improved support for borders in Volumes and VolumeSamplers.

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More fixes for edge case handling in marching cubes.
This commit is contained in:
David Williams
2010-08-26 20:48:51 +00:00
parent a39cb23dc3
commit cc22b682fa
4 changed files with 61 additions and 57 deletions
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17
library/PolyVoxCore/include/Volume.h
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@ -32,8 +32,8 @@ freely, subject to the following restrictions:
#include <limits>
#include <map>
#include <vector>
#include <memory>
#include <vector>
#pragma endregion
@ -128,6 +128,8 @@ namespace PolyVox
///Destructor
~Volume();
///Gets the value used for voxels which are outside the volume
VoxelType getBorderValue(void) const;
///Gets a Region representing the extents of the Volume.
Region getEnclosingRegion(void) const;
///Gets the width of the volume in voxels.
@ -143,10 +145,12 @@ namespace PolyVox
///Gets the length of the diagonal in voxels
float getDiagonalLength(void) const;
///Gets a voxel by <tt>x,y,z</tt> position
VoxelType getVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tDefault = VoxelType()) const;
VoxelType getVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos) const;
///Gets a voxel by 3D vector position
VoxelType getVoxelAt(const Vector3DUint16& v3dPos, VoxelType tDefault = VoxelType()) const;
///Sets the value used for voxels which are outside the volume
void setBorderValue(const VoxelType& tBorder);
///Sets the voxel at an <tt>x,y,z</tt> position
bool setVoxelAt(uint16_t uXPos, uint16_t uYPos, uint16_t uZPos, VoxelType tValue);
///Sets the voxel at a 3D vector position
@ -157,6 +161,7 @@ namespace PolyVox
private:
std::shared_ptr< Block<VoxelType> > getHomogenousBlock(VoxelType tHomogenousValue);
std::shared_ptr< Block<VoxelType> > m_pBorderBlock;
std::vector< std::shared_ptr< Block<VoxelType> > > m_pBlocks;
std::vector<bool> m_vecBlockIsPotentiallyHomogenous;
@ -174,20 +179,14 @@ namespace PolyVox
uint16_t m_uDepthInBlocks;
uint16_t m_uWidth;
uint8_t m_uWidthPower;
uint16_t m_uHeight;
uint8_t m_uHeightPower;
uint16_t m_uHeight;
uint16_t m_uDepth;
uint8_t m_uDepthPower;
uint8_t m_uBlockSideLengthPower;
uint16_t m_uBlockSideLength;
uint16_t m_uLongestSideLength;
uint16_t m_uShortestSideLength;
float m_fDiagonalLength;
uint32_t m_uCurrentBlockForTidying;