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Work on making the surface extractor use the new Array class.

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This commit is contained in:
David Williams
2010-03-14 22:24:32 +00:00
parent dbde097547
commit 34d138417e
4 changed files with 163 additions and 127 deletions
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35
library/PolyVoxCore/include/SurfaceExtractor.h
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@ -44,22 +44,28 @@ namespace PolyVox
POLYVOX_SHARED_PTR<SurfaceMesh> extractSurfaceForRegion(Region region);
private:
//Extract the surface for a particular LOD level
void extractSurfaceImpl(void);
//Compute the cell bitmask for a particular slice in z.
template<bool isPrevZAvail>
uint32_t computeBitmaskForSlice(void);
uint32_t computeBitmaskForSlice(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask);
//Compute the cell bitmask for a given cell.
template<bool isPrevXAvail, bool isPrevYAvail, bool isPrevZAvail>
void computeBitmaskForCell(void);
void computeBitmaskForCell(const Array2DUint8& pPreviousBitmask, Array2DUint8& pCurrentBitmask);
//Use the cell bitmasks to generate all the vertices needed for that slice
void generateVerticesForSlice();
void generateVerticesForSlice(const Array2DUint8& pCurrentBitmask,
Array2DInt32& m_pCurrentVertexIndicesX,
Array2DInt32& m_pCurrentVertexIndicesY,
Array2DInt32& m_pCurrentVertexIndicesZ);
//Use the cell bitmasks to generate all the indices needed for that slice
void generateIndicesForSlice();
void generateIndicesForSlice(const Array2DUint8& pPreviousBitmask,
const Array2DInt32& m_pPreviousVertexIndicesX,
const Array2DInt32& m_pPreviousVertexIndicesY,
const Array2DInt32& m_pPreviousVertexIndicesZ,
const Array2DInt32& m_pCurrentVertexIndicesX,
const Array2DInt32& m_pCurrentVertexIndicesY,
const Array2DInt32& m_pCurrentVertexIndicesZ);
//Converts a position into an index for accessing scratch areas.
inline uint32_t getIndex(uint32_t x, uint32_t y)
@ -71,17 +77,20 @@ namespace PolyVox
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_pPreviousVertexIndicesX;
int32_t* m_pPreviousVertexIndicesY;
int32_t* m_pPreviousVertexIndicesZ;
int32_t* m_pCurrentVertexIndicesX;
int32_t* m_pCurrentVertexIndicesY;
int32_t* m_pCurrentVertexIndicesZ;
int32_t* m_pCurrentVertexIndicesZ;*/
/*Array2DInt32 m_pPreviousVertexIndicesX;
Array2DInt32 m_pPreviousVertexIndicesY;
Array2DInt32 m_pPreviousVertexIndicesZ;
Array2DInt32 m_pCurrentVertexIndicesX;
Array2DInt32 m_pCurrentVertexIndicesY;
Array2DInt32 m_pCurrentVertexIndicesZ;*/
//Holds a position in volume space.
uint16_t uXVolSpace;