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Renamed some stuff in SurfaceExtractor.

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Added functions to move samplers to adjacent voxels.
This commit is contained in:
David Williams
2009-06-06 11:52:56 +00:00
parent 6fdb11ebf4
commit 19e860d291
4 changed files with 195 additions and 92 deletions
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70
library/PolyVoxCore/include/SurfaceExtractor.h
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@ -44,16 +44,43 @@ namespace PolyVox
POLYVOX_SHARED_PTR<IndexedSurfacePatch> extractSurfaceForRegion(Region region);
private:
//Extract the surface for a particular LOD level
template<uint8_t uLodLevel>
void extractSurfaceImpl(void);
//Compute the cell bitmask for a particular slice in z.
template<bool isPrevZAvail, uint8_t uLodLevel>
uint32_t computeBitmaskForSlice(void);
//Compute the cell bitmask for a given cell.
template<bool isPrevXAvail, bool isPrevYAvail, bool isPrevZAvail, uint8_t uLodLevel>
void computeBitmaskForCell(void);
//Use the cell bitmasks to generate all the vertices needed for that slice
void generateVerticesForSlice();
//Use the cell bitmasks to generate all the indices needed for that slice
void generateIndicesForSlice();
//Converts a position into an index for accessing scratch areas.
inline uint32_t getIndex(uint32_t x, uint32_t y)
{
return x + (y * m_uScratchPadWidth);
}
//The lod level can step size.
uint8_t m_uLodLevel;
uint8_t m_uStepSize;
//The volume data and a sampler to access it.
Volume<uint8_t> m_volData;
VolumeSampler<uint8_t> m_sampVolume;
//Cell bitmasks for the current and previous slices.
uint8_t* m_pPreviousBitmask;
uint8_t* m_pCurrentBitmask;
//Used to keep track of where generated vertices have been placed.
int32_t* m_pPreviousVertexIndicesX;
int32_t* m_pPreviousVertexIndicesY;
int32_t* m_pPreviousVertexIndicesZ;
@ -61,57 +88,40 @@ namespace PolyVox
int32_t* m_pCurrentVertexIndicesY;
int32_t* m_pCurrentVertexIndicesZ;
uint8_t v000;
uint8_t v100;
uint8_t v010;
uint8_t v110;
uint8_t v001;
uint8_t v101;
uint8_t v011;
uint8_t v111;
//Holds a position in volume space.
uint16_t uXVolSpace;
uint16_t uYVolSpace;
uint16_t uZVolSpace;
//Holds a position in region space.
uint16_t uXRegSpace;
uint16_t uYRegSpace;
uint16_t uZRegSpace;
//Used to return the number of cells in a slice which contain triangles.
uint32_t m_uNoOfOccupiedCells;
//The surface patch we are currently filling.
IndexedSurfacePatch* m_ispCurrent;
//Remove this?
Vector3DFloat m_v3dRegionOffset;
uint16_t m_uScratchPadWidth;
uint16_t m_uScratchPadHeight;
//Information about the region we a re currently processing
Region m_Region;
Region m_UncroppedRegion;
Region m_croppedVolume;
Region regSlice0;
Region regSlice1;
Region m_regSlicePrevious;
Region m_regSliceCurrent;
//Store the width and height because they are frequently
//used and have some overhead to compute.
uint16_t m_uRegionWidth;
uint16_t m_uRegionHeight;
inline uint32_t getIndex(uint32_t x, uint32_t y)
{
return x + (y * m_uScratchPadWidth);
}
template<uint8_t uLodLevel>
void extractSurfaceImpl(void);
template<bool isPrevZAvail, uint8_t uLodLevel>
uint32_t computeBitmaskForSlice(void);
template<bool isPrevXAvail, bool isPrevYAvail, bool isPrevZAvail, uint8_t uLodLevel>
void computeBitmaskForCell(void);
void generateIndicesForSlice();
void generateVerticesForSlice();
//These are used in several places so best stored.
uint16_t m_uScratchPadWidth;
uint16_t m_uScratchPadHeight;
};
}