geom.c File Reference

#include "config.h"
#include <assert.h>
#include <cgraph/unreachable.h>
#include <common/geom.h>
#include <common/geomprocs.h>
#include <math.h>
#include <stdbool.h>

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Macros
#define	SMALL   0.0000000001
#define	dot(v, w)   (v.x*w.x+v.y*w.y)

Functions
int	lineToBox (pointf p, pointf q, boxf b)
void	rect2poly (pointf *p)
pointf	cwrotatepf (pointf p, int cwrot)
pointf	ccwrotatepf (pointf p, int ccwrot)
boxf	flip_rec_boxf (boxf b, pointf p)
double	ptToLine2 (pointf a, pointf b, pointf p)
int	line_intersect (pointf a, pointf b, pointf c, pointf d, pointf *p)

Detailed Description

API geomprocs.h

Definition in file geom.c.

Macro Definition Documentation

dot

#define dot	(		v,
			w
	)		(v.x*w.x+v.y*w.y)

Definition at line 228 of file geom.c.

SMALL

#define SMALL   0.0000000001

Definition at line 213 of file geom.c.

Function Documentation

ccwrotatepf()

pointf ccwrotatepf	(	pointf	p,
		int	ccwrot
	)

Definition at line 172 of file geom.c.

References UNREACHABLE, pointf_s::x, and pointf_s::y.

Referenced by compassPoint(), epsf_inside(), map_point(), point_inside(), poly_inside(), record_inside(), and star_inside().

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cwrotatepf()

pointf cwrotatepf	(	pointf	p,
		int	cwrot
	)

Definition at line 147 of file geom.c.

References UNREACHABLE, pointf_s::x, and pointf_s::y.

Referenced by compassPoint(), and compassPort().

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flip_rec_boxf()

boxf flip_rec_boxf	(	boxf	b,
		pointf	p
	)

Definition at line 197 of file geom.c.

References boxf::LL, boxf::UR, pointf_s::x, and pointf_s::y.

Referenced by record_path().

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line_intersect()

int line_intersect	(	pointf	a,
		pointf	b,
		pointf	c,
		pointf	d,
		pointf *	p
	)

Definition at line 235 of file geom.c.

References dot, perp(), scale(), SMALL, and sub_pointf().

Referenced by raySegIntersect().

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lineToBox()

int lineToBox	(	pointf	p,
		pointf	q,
		boxf	b
	)

Definition at line 47 of file geom.c.

References BETWEEN, INSIDE, boxf::LL, boxf::UR, pointf_s::x, and pointf_s::y.

Referenced by overlap_bezier().

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ptToLine2()

double ptToLine2	(	pointf	a,
		pointf	b,
		pointf	p
	)

Definition at line 218 of file geom.c.

References dx, dy, SMALL, pointf_s::x, and pointf_s::y.

Referenced by check_control_points().

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rect2poly()

void rect2poly

(

pointf *

p

)

Definition at line 139 of file geom.c.

References pointf_s::x, and pointf_s::y.

Referenced by emit_map_rect(), emit_page(), map_label(), and map_point().

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