#include <assert.h>
#include <pathutil.h>
#include <stdlib.h>
#ifdef DMALLOC
#include "dmalloc.h"
#endif
Ppoly_t copypoly(Ppoly_t argpoly)
{
Ppoly_t rv;
int i;
rv.pn = argpoly.pn;
rv.ps = malloc(sizeof(Ppoint_t) * argpoly.pn);
for (i = 0; i < argpoly.pn; i++) rv.ps[i] = argpoly.ps[i];
return rv;
}
void freepoly(Ppoly_t argpoly)
{
free(argpoly.ps);
}
int Ppolybarriers(Ppoly_t **polys, int npolys, Pedge_t **barriers, int *n_barriers)
{
Ppoly_t pp;
int i, j, k, n, b;
Pedge_t *bar;
n = 0;
for (i = 0; i < npolys; i++)
n = n + polys[i]->pn;
bar = malloc(n * sizeof(Pedge_t));
b = 0;
for (i = 0; i < npolys; i++) {
pp = *polys[i];
for (j = 0; j < pp.pn; j++) {
k = j + 1;
if (k >= pp.pn) k = 0;
bar[b].a = pp.ps[j];
bar[b].b = pp.ps[k];
b++;
}
}
assert(b == n);
*barriers = bar;
*n_barriers = n;
return 1;
}