/misc/src/release/graphviz-2.18-1/src/graphviz-2.18/lib/neatogen/hedges.h File Reference

#include "site.h"
#include "edges.h"

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Data Structures

struct  Halfedge

Functions

void ELinitialize (void)
void ELcleanup (void)
int right_of (Halfedge *, Point *)
Sitehintersect (Halfedge *, Halfedge *)
HalfedgeHEcreate (Edge *, char)
void ELinsert (Halfedge *, Halfedge *)
HalfedgeELleftbnd (Point *)
void ELdelete (Halfedge *)
HalfedgeELleft (Halfedge *)
Halfedge ** ELright (Halfedge *)
Siteleftreg (Halfedge *)
Site ** rightreg (Halfedge *)

Variables

HalfedgeELleftend
HalfedgeELrightend


Function Documentation

void ELcleanup ( void   ) 

Definition at line 31 of file hedges.c.

References free(), freeinit(), and NULL.

void ELdelete ( Halfedge  ) 

Definition at line 235 of file hedges.c.

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

Referenced by voronoi().

void ELinitialize ( void   ) 

Definition at line 38 of file hedges.c.

References Halfedge::ELleft, ELleftend, Halfedge::ELright, ELrightend, freeinit(), HEcreate(), N_GNEW, NULL, and sqrt_nsites.

Referenced by voronoi().

void ELinsert ( Halfedge ,
Halfedge  
)

Definition at line 163 of file hedges.c.

References ELleft(), and Halfedge::ELright.

Referenced by voronoi().

Halfedge* ELleft ( Halfedge  ) 

Halfedge* ELleftbnd ( Point  ) 

Definition at line 189 of file hedges.c.

References deltax, Halfedge::ELleft, ELleftend, Halfedge::ELrefcnt, Halfedge::ELright, ELrightend, NULL, right_of(), Point::x, and xmin.

Referenced by voronoi().

Halfedge* * ELright ( Halfedge  ) 

Definition at line 243 of file hedges.c.

References Halfedge::ELright.

Referenced by ELdelete(), and voronoi().

Halfedge* HEcreate ( Edge ,
char   
)

Definition at line 150 of file hedges.c.

References Halfedge::ELedge, Halfedge::ELpm, Halfedge::ELrefcnt, getfree(), NULL, Halfedge::PQnext, and Halfedge::vertex.

Referenced by ELinitialize(), and voronoi().

Site* hintersect ( Halfedge ,
Halfedge  
)

Definition at line 59 of file hedges.c.

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

Referenced by voronoi().

Site* leftreg ( Halfedge  ) 

int right_of ( Halfedge ,
Point  
)

Definition at line 103 of file hedges.c.

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

Referenced by ELleftbnd().

Site* * rightreg ( Halfedge  ) 

Definition at line 261 of file hedges.c.

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

Referenced by voronoi().


Variable Documentation

Halfedge* ELleftend

Definition at line 24 of file hedges.c.

Referenced by ELinitialize(), ELleftbnd(), and voronoi().

Halfedge * ELrightend

Definition at line 24 of file hedges.c.

Referenced by ELinitialize(), ELleftbnd(), and voronoi().


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