visibility.c File Reference

#include "vis.h"

Include dependency graph for visibility.c:

Go to the source code of this file.

Macros
#define	INTERSECT(a, b, c, d, e)   intersect((a),(b),(c),(d))

Functions
COORD	area2 (Ppoint_t a, Ppoint_t b, Ppoint_t c)
int	wind (Ppoint_t a, Ppoint_t b, Ppoint_t c)
int	inBetween (Ppoint_t a, Ppoint_t b, Ppoint_t c)
int	intersect (Ppoint_t a, Ppoint_t b, Ppoint_t c, Ppoint_t d)
COORD	dist2 (Ppoint_t a, Ppoint_t b)
void	visibility (vconfig_t *conf)
COORD *	ptVis (vconfig_t *conf, int pp, Ppoint_t p)
int	directVis (Ppoint_t p, int pp, Ppoint_t q, int qp, vconfig_t *conf)

Macro Definition Documentation

#define INTERSECT	(		a,
			b,
			c,
			d,
			e
	)		intersect((a),(b),(c),(d))

Definition at line 25 of file visibility.c.

Referenced by directVis().

Function Documentation

COORD area2	(	Ppoint_t	a,
		Ppoint_t	b,
		Ppoint_t	c
	)

Definition at line 56 of file visibility.c.

References Pxy_t::x, and Pxy_t::y.

int directVis	(	Ppoint_t	p,
		int	pp,
		Ppoint_t	q,
		int	qp,
		vconfig_t *	conf
	)

Definition at line 400 of file visibility.c.

References INTERSECT, vconfig_s::N, vconfig_s::next, vconfig_s::P, s1(), and vconfig_s::start.

Referenced by makePath().

COORD dist2	(	Ppoint_t	a,
		Ppoint_t	b
	)

Definition at line 213 of file visibility.c.

References Pxy_t::x, and Pxy_t::y.

Referenced by addEdgeLabels(), and box_connection().

int inBetween	(	Ppoint_t	a,
		Ppoint_t	b,
		Ppoint_t	c
	)

Definition at line 92 of file visibility.c.

References Pxy_t::x, and Pxy_t::y.

Referenced by intersect().

int intersect	(	Ppoint_t	a,
		Ppoint_t	b,
		Ppoint_t	c,
		Ppoint_t	d
	)

Definition at line 153 of file visibility.c.

References inBetween(), and wind().

COORD* ptVis	(	vconfig_t *	conf,
		int	pp,
		Ppoint_t	p
	)

Definition at line 339 of file visibility.c.

References dist(), vconfig_s::N, vconfig_s::next, vconfig_s::P, POLYID_UNKNOWN, vconfig_s::prev, and vconfig_s::start.

Referenced by Pobspath().

void visibility

(

vconfig_t *

conf

)

Definition at line 305 of file visibility.c.

References vconfig_s::N, and vconfig_s::vis.

Referenced by Pobsopen().

int wind	(	Ppoint_t	a,
		Ppoint_t	b,
		Ppoint_t	c
	)

Definition at line 65 of file visibility.c.

References Pxy_t::x, and Pxy_t::y.

Referenced by in_poly(), and intersect().