site.h

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#pragma once
 
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <neatogen/geometry.h>
 
    /* Sites are also used as vertices on line segments */
    typedef struct Site {
        Point coord;
        size_t sitenbr;
        unsigned refcnt;
    } Site;
 
    extern int siteidx;
    extern Site *bottomsite;
 
    extern void siteinit(void);
    extern Site *getsite(void);
    extern double dist(Site *, Site *); /* Distance between two sites */
    extern void deref(Site *);  /* Increment refcnt of site  */
    extern void ref(Site *);    /* Decrement refcnt of site  */
    extern void makevertex(Site *);     /* Transform a site into a vertex */
 
#ifdef __cplusplus
}
#endif