CompactHeightfield.h

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//
//  CompactHeightfield.h
//  Recast
//
//  Created by Graham Pentheny on 7/31/15.
//
//

#ifndef Recast_CompactHeightfield_h
#define Recast_CompactHeightfield_h


bool rcBuildCompactHeightfield(rcContext* ctx, const int walkableHeight, const int walkableClimb, rcHeightfield& hf, rcCompactHeightfield& chf);

bool rcBuildDistanceField(rcContext* ctx, rcCompactHeightfield& chf);

bool rcBuildRegions(rcContext* ctx, rcCompactHeightfield& chf, const int borderSize, const int minRegionArea, const int mergeRegionArea);

bool rcBuildLayerRegions(rcContext* ctx, rcCompactHeightfield& chf, const int borderSize, const int minRegionArea);

bool rcBuildRegionsMonotone(rcContext* ctx, rcCompactHeightfield& chf, const int borderSize, const int minRegionArea, const int mergeRegionArea);

inline void rcSetCon(rcCompactSpan& s, int dir, int i)
{
    const unsigned int shift = (unsigned int)dir*6;
    unsigned int con = s.connectionData;
    s.connectionData = (con & ~(0x3f << shift)) | (((unsigned int)i & 0x3f) << shift);
}

inline int rcGetCon(const rcCompactSpan& s, int dir)
{
    const unsigned int shift = (unsigned int)dir*6;
    return (s.connectionData >> shift) & 0x3f;
}

inline int rcGetDirOffsetX(int dir)
{
    const int offset[4] = { -1, 0, 1, 0, };
    return offset[dir&0x03];
}

inline int rcGetDirOffsetY(int dir)
{
    const int offset[4] = { 0, 1, 0, -1 };
    return offset[dir&0x03];
}


#endif