#ifndef _POLYLIB
#define _POLYLIB

typedef struct
{
	int		numpoints;
	vec3_t	p[4];		/* variable sized */
} winding_t;

#define	MAX_POINTS_ON_WINDING	64

/* you can define on_epsilon in the makefile as tighter */
#ifndef	ON_EPSILON
#define	ON_EPSILON	0.1
#endif

winding_t	*AllocWinding(int points);
vec_t	WindingArea(winding_t *w);
void	WindingCenter(winding_t *w, vec3_t center);
void	ClipWindingEpsilon(winding_t *in, vec3_t normal, vec_t dist,
				vec_t epsilon, winding_t **front, winding_t **back);
winding_t	*ChopWinding(winding_t *in, vec3_t normal, vec_t dist);
winding_t	*CopyWinding(winding_t *w);
winding_t	*ReverseWinding(winding_t *w);
winding_t	*BaseWindingForPlane(vec3_t normal, vec_t dist);
void	RemoveColinearPoints(winding_t *w);
void	FreeWinding(winding_t *w);
void	WindingBounds(winding_t *w, vec3_t mins, vec3_t maxs);

void	ChopWindingInPlace(winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon);
/* frees the original if clipped */


#endif /* POLYLIB */