hedges.h File Reference

#include <util/api.h>
#include <util/arena.h>
#include <neatogen/site.h>
#include <neatogen/edges.h>

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Data Structures
struct	Halfedge
struct	el_state_t

Typedefs
typedef struct Halfedge	Halfedge

Functions
PRIVATE void	ELinitialize (el_state_t *)
PRIVATE void	ELcleanup (el_state_t *)
PRIVATE Site *	hintersect (Halfedge *, Halfedge *, arena_t *)
PRIVATE Halfedge *	HEcreate (el_state_t *, Edge *, char)
PRIVATE void	ELinsert (Halfedge *, Halfedge *)
PRIVATE Halfedge *	ELleftbnd (el_state_t *, Point *)
PRIVATE void	ELdelete (Halfedge *)
PRIVATE Halfedge *	ELleft (Halfedge *)
PRIVATE Halfedge *	ELright (Halfedge *)
PRIVATE Site *	leftreg (Halfedge *)
PRIVATE Site *	rightreg (Halfedge *)

Typedef Documentation

Halfedge

typedef struct Halfedge Halfedge

Function Documentation

ELcleanup()

PRIVATE void ELcleanup

(

el_state_t *

st

)

Definition at line 21 of file hedges.c.

References el_state_t::allocated, free(), gv_arena_reset(), and el_state_t::hash.

Referenced by voronoi().

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ELdelete()

PRIVATE void ELdelete

(

Halfedge *

he

)

Definition at line 218 of file hedges.c.

References DELETED, Halfedge::ELedge, Halfedge::ELleft, and Halfedge::ELright.

Referenced by voronoi().

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ELinitialize()

PRIVATE void ELinitialize

(

el_state_t *

st

)

Definition at line 26 of file hedges.c.

References Halfedge::ELleft, Halfedge::ELright, gv_calloc(), el_state_t::hash, el_state_t::hashsize, HEcreate(), el_state_t::leftend, NULL, el_state_t::rightend, and sqrt_nsites.

Referenced by voronoi().

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ELinsert()

PRIVATE void ELinsert	(	Halfedge *	lb,
		Halfedge *	new
	)

Definition at line 139 of file hedges.c.

References Halfedge::ELleft, and Halfedge::ELright.

Referenced by voronoi().

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ELleft()

PRIVATE Halfedge * ELleft

(

Halfedge *

)

ELleftbnd()

PRIVATE Halfedge * ELleftbnd	(	el_state_t *	st,
		Point *	p
	)

Definition at line 180 of file hedges.c.

References clamp(), deltax, ELgethash(), Halfedge::ELleft, Halfedge::ELright, el_state_t::hash, el_state_t::hashsize, el_state_t::leftend, NULL, right_of(), el_state_t::rightend, Point::x, and xmin.

Referenced by voronoi().

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ELright()

PRIVATE Halfedge * ELright

(

Halfedge *

he

)

Definition at line 226 of file hedges.c.

References Halfedge::ELright.

Referenced by voronoi().

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HEcreate()

PRIVATE Halfedge * HEcreate	(	el_state_t *	st,
		Edge *	e,
		char	pm
	)

Definition at line 129 of file hedges.c.

References el_state_t::allocated, ARENA_NEW, Halfedge::ELedge, Halfedge::ELpm, NULL, Halfedge::PQnext, and Halfedge::vertex.

Referenced by ELinitialize(), and voronoi().

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hintersect()

PRIVATE Site * hintersect	(	Halfedge *	el1,
		Halfedge *	el2,
		arena_t *	allocator
	)

Definition at line 43 of file hedges.c.

References Edge::a, ARENA_NEW, Edge::b, Edge::c, Site::coord, Halfedge::ELedge, Halfedge::ELpm, le, NULL, re, Edge::reg, Point::x, and Point::y.

Referenced by voronoi().

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leftreg()

PRIVATE Site * leftreg

(

Halfedge *

)

rightreg()

PRIVATE Site * rightreg

(

Halfedge *

he

)

Definition at line 244 of file hedges.c.

References bottomsite, Halfedge::ELedge, Halfedge::ELpm, le, NULL, re, and Edge::reg.

Referenced by voronoi().

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