geomprocs.h File Reference

geometric functions (e.g. on points and boxes) More...

#include <stdbool.h>
#include "geom.h"

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Macros
#define	GEOMPROCS_API   /* nothing */

Functions
GEOMPROCS_API boxf	flip_rec_boxf (boxf b, pointf p)
GEOMPROCS_API double	ptToLine2 (pointf l1, pointf l2, pointf p)
GEOMPROCS_API int	lineToBox (pointf p1, pointf p2, boxf b)
GEOMPROCS_API pointf	ccwrotatepf (pointf p, int ccwrot)
GEOMPROCS_API pointf	cwrotatepf (pointf p, int cwrot)
GEOMPROCS_API void	rect2poly (pointf *p)
GEOMPROCS_API int	line_intersect (pointf a, pointf b, pointf c, pointf d, pointf *p)
static point	add_point (point p, point q)
static pointf	add_pointf (pointf p, pointf q)
static pointf	sub_pointf (pointf p, pointf q)
static pointf	mid_pointf (pointf p, pointf q)
static pointf	interpolate_pointf (double t, pointf p, pointf q)
static point	exch_xy (point p)
static pointf	exch_xyf (pointf p)
static bool	boxf_overlap (boxf b0, boxf b1)
static pointf	perp (pointf p)
static pointf	scale (double c, pointf p)

Detailed Description

with application to, but no specific dependence on graphs

Definition in file geomprocs.h.

Macro Definition Documentation

GEOMPROCS_API

#define GEOMPROCS_API   /* nothing */

Definition at line 39 of file geomprocs.h.

Function Documentation

add_point()

static point add_point ( point  p, point  q  )

inlinestatic

Definition at line 54 of file geomprocs.h.

References point::x, and point::y.

add_pointf()

static pointf add_pointf ( pointf  p, pointf  q  )

inlinestatic

Definition at line 63 of file geomprocs.h.

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

Referenced by _spline_edges(), addEndpoint(), arrow_type_crow0(), arrow_type_diamond0(), beginpath(), compute_bb(), endpath(), gen_fields(), genPoly(), getPath(), make_flat_labeled_edge(), makeLineEdge(), makeSimpleFlat(), makeSimpleFlatLabels(), makeStraightEdges(), Mcircle_hack(), overlap_label(), packRects(), record_inside(), and transformf().

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boxf_overlap()

static bool boxf_overlap ( boxf  b0, boxf  b1  )

inlinestatic

Definition at line 117 of file geomprocs.h.

References OVERLAP.

Referenced by edge_in_box(), emit_xdot(), node_in_box(), and overlap_edge().

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ccwrotatepf()

GEOMPROCS_API 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()

GEOMPROCS_API 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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exch_xy()

static point exch_xy ( point  p )

inlinestatic

Definition at line 99 of file geomprocs.h.

References point::x, and point::y.

Referenced by init_job_pagination(), and setup_page().

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exch_xyf()

static pointf exch_xyf ( pointf  p )

inlinestatic

Definition at line 108 of file geomprocs.h.

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

Referenced by _neato_set_aspect(), init_job_pagination(), and set_aspect().

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flip_rec_boxf()

GEOMPROCS_API 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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interpolate_pointf()

static pointf interpolate_pointf ( double  t, pointf  p, pointf  q  )

inlinestatic

Definition at line 90 of file geomprocs.h.

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

Referenced by alloc_interpolation_points().

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line_intersect()

GEOMPROCS_API 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()

GEOMPROCS_API int lineToBox	(	pointf	p1,
		pointf	p2,
		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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mid_pointf()

static pointf mid_pointf ( pointf  p, pointf  q  )

inlinestatic

Definition at line 81 of file geomprocs.h.

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

Referenced by bend(), gen_fields(), gvrender_ellipse(), layout(), makeCompoundEdge(), overlap_node(), polyGraphs(), and wedgedEllipse().

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perp()

static pointf perp ( pointf  p )

inlinestatic

Definition at line 121 of file geomprocs.h.

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

Referenced by line_intersect(), and makeStraightEdges().

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ptToLine2()

GEOMPROCS_API double ptToLine2	(	pointf	l1,
		pointf	l2,
		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()

GEOMPROCS_API 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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scale()

static pointf scale ( double  c, pointf  p  )

inlinestatic

Definition at line 130 of file geomprocs.h.

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

Referenced by _neato_set_aspect(), arrow_type_diamond0(), cairogen_begin_page(), computeScaleXY(), D2E(), emit_html_img(), gdgen_begin_page(), gvrender_ptf(), gvrender_ptf_A(), line_intersect(), overlap_arrow(), scale_clamp(), and set_aspect().

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sub_pointf()

static pointf sub_pointf ( pointf  p, pointf  q  )

inlinestatic

Definition at line 72 of file geomprocs.h.

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

Referenced by arrow_type_crow0(), arrow_type_diamond0(), arrow_type_normal0(), arrow_type_tee(), compute_bb(), genPoly(), idealsize(), layout(), line_intersect(), overlap_label(), overlap_node(), record_inside(), and wedgedEllipse().

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