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/*
* OpenSCAD (www.openscad.org)
* Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
* Marius Kintel <marius@kintel.net>
*
* 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.
*
* As a special exception, you have permission to link this program
* with the CGAL library and distribute executables, as long as you
* follow the requirements of the GNU GPL in regard to all of the
* software in the executable aside from CGAL.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifdef ENABLE_CGAL
#include "cgal.h"
#include <CGAL/convex_hull_2.h>
extern CGAL_Nef_polyhedron2 convexhull2(std::list<CGAL_Nef_polyhedron2> a);
extern CGAL_Poly2 nef2p2(CGAL_Nef_polyhedron2 p);
CGAL_Nef_polyhedron2 convexhull2(std::list<CGAL_Nef_polyhedron2> a)
{
std::list<CGAL_Nef_polyhedron2::Point> points;
std::list<CGAL_Nef_polyhedron2>::iterator i;
for(i=a.begin(); i!=a.end(); i++) {
CGAL_Poly2 ap=nef2p2(*i);
for (int j=0;j<ap.size();j++) {
double x=to_double(ap[j].x()),y=to_double(ap[j].y());
CGAL_Nef_polyhedron2::Point p=CGAL_Nef_polyhedron2::Point(x,y);
points.push_back(p);
}
}
std::list<CGAL_Nef_polyhedron2::Point> result;
CGAL::convex_hull_2(points.begin(),points.end(),std::back_inserter(result));
return CGAL_Nef_polyhedron2(result.begin(),result.end(),CGAL_Nef_polyhedron2::INCLUDED);
}
#endif
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