geomprocs.h File Reference

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

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

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Macros
#define	GEOMPROCS_API   /* nothing */
#define	EXPANDBB(b0, b1)    (_Generic((b0), box *: expandbb, boxf *: expandbbf)((b0), (b1)))

Functions
static void	expandbp (boxf *b, pointf p)
	expand box b as needed to enclose point p
static void	expandbb (box *b0, box b1)
	expand box b0 as needed to enclose box b1
static void	expandbbf (boxf *b0, boxf b1)
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

EXPANDBB

#define EXPANDBB	(		b0,
			b1
	)		(_Generic((b0), box *: expandbb, boxf *: expandbbf)((b0), (b1)))

Definition at line 64 of file geomprocs.h.

GEOMPROCS_API

#define GEOMPROCS_API   /* nothing */

Definition at line 40 of file geomprocs.h.

Function Documentation

add_point()

static point add_point ( point  p, point  q  )

inlinestatic

Definition at line 79 of file geomprocs.h.

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

add_pointf()

static pointf add_pointf ( pointf  p, pointf  q  )

inlinestatic

Definition at line 88 of file geomprocs.h.

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

Referenced by 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(), spline_edges_(), and transformf().

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boxf_overlap()

static bool boxf_overlap ( boxf  b0, boxf  b1  )

inlinestatic

Definition at line 142 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 124 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 133 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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expandbb()

static void expandbb ( box *  b0, box  b1  )

inlinestatic

Definition at line 52 of file geomprocs.h.

References box::LL, MAX, MIN, box::UR, point::x, and point::y.

expandbbf()

static void expandbbf ( boxf *  b0, boxf  b1  )

inlinestatic

Definition at line 58 of file geomprocs.h.

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

expandbp()

static void expandbp ( boxf *  b, pointf  p  )

inlinestatic

Definition at line 44 of file geomprocs.h.

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

Referenced by bezier_bb(), compute_bb(), and gvrender_usershape().

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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 115 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 106 of file geomprocs.h.

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

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

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perp()

static pointf perp ( pointf  p )

inlinestatic

Definition at line 146 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 155 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 97 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(), set_aspect(), and wedgedEllipse().

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