mirror of
git://projects.qi-hardware.com/cae-tools.git
synced 2024-12-23 09:28:58 +02:00
45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
|
/*
|
||
|
|
* p2d_area.c - Fill a set of nested polygons
|
||
|
|
*
|
||
|
|
* Written 2012 by Werner Almesberger
|
||
|
|
* Copyright 2012 Werner Almesberger
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include "poly2d.h"
|
||
|
|
#include "p2d_hsort.h"
|
||
|
|
|
||
|
|
|
||
|
|
static void recurse_area(struct p2d_hier *t, double offset, double overlap,
|
||
|
|
struct p2d ***last)
|
||
|
|
{
|
||
|
|
const struct p2d *p, *h;
|
||
|
|
|
||
|
|
for (p = &t->p; p; p = p->next) {
|
||
|
|
h = &p2d_to_hier(p)->holes->p;
|
||
|
|
p2d_area_holes_append(p, h, offset, overlap, last);
|
||
|
|
while (h) {
|
||
|
|
recurse_area(p2d_to_hier(h)->holes, offset, overlap,
|
||
|
|
last);
|
||
|
|
h = h->next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
struct p2d *p2d_area(const struct p2d *p, double offset, double overlap)
|
||
|
|
{
|
||
|
|
struct p2d_hier *t;
|
||
|
|
struct p2d *res = NULL, **last = &res;
|
||
|
|
|
||
|
|
t = p2d_hsort(p);
|
||
|
|
recurse_area(t, offset, overlap, &last);
|
||
|
|
p2d_hier_free(t);
|
||
|
|
return res;
|
||
|
|
}
|