vis.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 <assert.h>
#include <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include <limits.h>
#include "vispath.h"
#include "pathutil.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
    typedef COORD **array2;
 
#define EQ(p,q)         ((p.x == q.x) && (p.y == q.y))
 
    struct vconfig_s {
        int Npoly;
        int N;                  /* number of points in walk of barriers */
        Ppoint_t *P;            /* barrier points */
        int *start;
        int *next;
        int *prev;
 
        /* this is computed from the above */
        array2 vis;
    };
#ifdef GVDLL
#ifdef PATHPLAN_EXPORTS
#define VIS_API __declspec(dllexport)
#else
#define VIS_API __declspec(dllimport)
#endif
#endif
 
#ifndef VIS_API
#define VIS_API /* nothing */
#endif
 
        VIS_API COORD *ptVis(vconfig_t *, int, Ppoint_t);
    VIS_API bool directVis(Ppoint_t, int, Ppoint_t, int, vconfig_t *);
    VIS_API void visibility(vconfig_t *);
    VIS_API int *makePath(Ppoint_t p, int pp, COORD * pvis,
                         Ppoint_t q, int qp, COORD * qvis,
                         vconfig_t * conf);
 
#undef VIS_API
 
#ifdef __cplusplus
}
#endif