DetourCommon.cpp File Reference

#include "DetourCommon.h"
#include "DetourMath.h"

Functions
void	dtClosestPtPointTriangle (float *closest, const float *p, const float *a, const float *b, const float *c)
	Derives the closest point on a triangle from the specified reference point. More...
bool	dtIntersectSegmentPoly2D (const float *p0, const float *p1, const float *verts, int nverts, float &tmin, float &tmax, int &segMin, int &segMax)
float	dtDistancePtSegSqr2D (const float *pt, const float *p, const float *q, float &t)
void	dtCalcPolyCenter (float *tc, const unsigned short *idx, int nidx, const float *verts)
	Derives the centroid of a convex polygon. More...
bool	dtClosestHeightPointTriangle (const float *p, const float *a, const float *b, const float *c, float &h)
	Derives the y-axis height of the closest point on the triangle from the specified reference point. More...
bool	dtPointInPolygon (const float *pt, const float *verts, const int nverts)
	Determines if the specified point is inside the convex polygon on the xz-plane. More...
bool	dtDistancePtPolyEdgesSqr (const float *pt, const float *verts, const int nverts, float *ed, float *et)
static void	projectPoly (const float *axis, const float *poly, const int npoly, float &rmin, float &rmax)
bool	overlapRange (const float amin, const float amax, const float bmin, const float bmax, const float eps)
bool	dtOverlapPolyPoly2D (const float *polya, const int npolya, const float *polyb, const int npolyb)
	Determines if the two convex polygons overlap on the xz-plane. More...
void	dtRandomPointInConvexPoly (const float *pts, const int npts, float *areas, const float s, const float t, float *out)
float	vperpXZ (const float *a, const float *b)
bool	dtIntersectSegSeg2D (const float *ap, const float *aq, const float *bp, const float *bq, float &s, float &t)

Function Documentation

dtCalcPolyCenter()

void dtCalcPolyCenter	(	float *	tc,
		const unsigned short *	idx,
		int	nidx,
		const float *	verts
	)

Derives the centroid of a convex polygon.

Parameters

[out]	tc	The centroid of the polgyon. [(x, y, z)]
[in]	idx	The polygon indices. [(vertIndex) * nidx]
[in]	nidx	The number of indices in the polygon. [Limit: >= 3]
[in]	verts	The polygon vertices. [(x, y, z) * vertCount]

dtClosestHeightPointTriangle()

bool dtClosestHeightPointTriangle	(	const float *	p,
		const float *	a,
		const float *	b,
		const float *	c,
		float &	h
	)

Derives the y-axis height of the closest point on the triangle from the specified reference point.

Parameters

[in]	p	The reference point from which to test. [(x, y, z)]
[in]	a	Vertex A of triangle ABC. [(x, y, z)]
[in]	b	Vertex B of triangle ABC. [(x, y, z)]
[in]	c	Vertex C of triangle ABC. [(x, y, z)]
[out]	h	The resulting height.

dtClosestPtPointTriangle()

void dtClosestPtPointTriangle	(	float *	closest,
		const float *	p,
		const float *	a,
		const float *	b,
		const float *	c
	)

Derives the closest point on a triangle from the specified reference point.

Parameters

[out]	closest	The closest point on the triangle.
[in]	p	The reference point from which to test. [(x, y, z)]
[in]	a	Vertex A of triangle ABC. [(x, y, z)]
[in]	b	Vertex B of triangle ABC. [(x, y, z)]
[in]	c	Vertex C of triangle ABC. [(x, y, z)]

dtDistancePtPolyEdgesSqr()

bool dtDistancePtPolyEdgesSqr	(	const float *	pt,
		const float *	verts,
		const int	nverts,
		float *	ed,
		float *	et
	)

dtDistancePtSegSqr2D()

float dtDistancePtSegSqr2D	(	const float *	pt,
		const float *	p,
		const float *	q,
		float &	t
	)

dtIntersectSegmentPoly2D()

bool dtIntersectSegmentPoly2D	(	const float *	p0,
		const float *	p1,
		const float *	verts,
		int	nverts,
		float &	tmin,
		float &	tmax,
		int &	segMin,
		int &	segMax
	)

dtIntersectSegSeg2D()

bool dtIntersectSegSeg2D	(	const float *	ap,
		const float *	aq,
		const float *	bp,
		const float *	bq,
		float &	s,
		float &	t
	)

dtOverlapPolyPoly2D()

bool dtOverlapPolyPoly2D	(	const float *	polya,
		const int	npolya,
		const float *	polyb,
		const int	npolyb
	)

Determines if the two convex polygons overlap on the xz-plane.

All vertices are projected onto the xz-plane, so the y-values are ignored.

dtPointInPolygon()

bool dtPointInPolygon	(	const float *	pt,
		const float *	verts,
		const int	nverts
	)

Determines if the specified point is inside the convex polygon on the xz-plane.

All points are projected onto the xz-plane, so the y-values are ignored.

dtRandomPointInConvexPoly()

void dtRandomPointInConvexPoly	(	const float *	pts,
		const int	npts,
		float *	areas,
		const float	s,
		const float	t,
		float *	out
	)

overlapRange()

bool overlapRange ( const float  amin, const float  amax, const float  bmin, const float  bmax, const float  eps  )

inline

projectPoly()

static void projectPoly ( const float *  axis, const float *  poly, const int  npoly, float &  rmin, float &  rmax  )

static

vperpXZ()

float vperpXZ ( const float *  a, const float *  b  )

inline