graphics
Class CHFTracer

class CHFTracer

m_CellSize

private float m_CellSize;

m_Heightfield

private const u16* m_Heightfield;

m_HeightScale

private float m_HeightScale;

m_MapSize

private u32 m_MapSize;

m_pTerrain

private CTerrain* m_pTerrain;

CHFTracer

public CHFTracer( CTerrain* pTerrain );

RayTriIntersect: intersect a ray with triangle defined by vertices v0,v1,v2; return true if ray hits triangle at distance less than dist, or false otherwise

CellIntersect

private bool CellIntersect( int cx, int cz, CVector3D& origin, CVector3D& dir, float& dist ) const;

RayIntersect: intersect ray with this heightfield; return true if intersection occurs (and fill in grid coordinates of intersection), or false otherwise

RayIntersect

public bool RayIntersect( CVector3D& origin, CVector3D& dir, int& x, int& z, CVector3D& ipt ) const;

RayTriIntersect

private bool RayTriIntersect( const CVector3D& v0, const CVector3D& v1, const CVector3D& v2, const CVector3D& origin, const CVector3D& dir, float& dist ) const;

CellIntersect: test if ray intersects either of the triangles in the given cell - return hit result, and distance to hit, if hit occurred