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/*
* OpenSCAD (www.openscad.at)
* Copyright (C) 2009 Clifford Wolf <clifford@clifford.at>
*
* 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 "node.h"
#include "printutils.h"
#include "grid.h"
#include "cgal.h"
#if 0
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/minkowski_sum_2.h>
extern CGAL_Nef_polyhedron2 minkowski2(CGAL_Nef_polyhedron2 a, CGAL_Nef_polyhedron2 b);
struct K2 : public CGAL::Exact_predicates_exact_constructions_kernel {};
typedef CGAL::Polygon_2<K2> Poly2;
typedef CGAL::Polygon_with_holes_2<K2> Poly2h;
static Poly2 nef2p2(CGAL_Nef_polyhedron2 p)
{
std::list<K2::Point_2> points;
Grid2d<int> grid(GRID_COARSE);
typedef CGAL_Nef_polyhedron2::Explorer Explorer;
typedef Explorer::Face_const_iterator fci_t;
typedef Explorer::Halfedge_around_face_const_circulator heafcc_t;
Explorer E = p.explorer();
for (fci_t fit = E.faces_begin(), fend = E.faces_end(); fit != fend; ++fit)
{
if (fit != E.faces_begin()) {
PRINT("WARNING: minkowski() is not implemented for 2d objects with holes!");
break;
}
heafcc_t fcirc(E.halfedge(fit)), fend(fcirc);
CGAL_For_all(fcirc, fend) {
if (E.is_standard(E.target(fcirc))) {
Explorer::Point ep = E.point(E.target(fcirc));
double x = to_double(ep.x()), y = to_double(ep.y());
grid.align(x, y);
points.push_back(K2::Point_2(x, y));
}
}
}
return Poly2(points.begin(), points.end());
}
CGAL_Nef_polyhedron2 minkowski2(CGAL_Nef_polyhedron2 a, CGAL_Nef_polyhedron2 b)
{
Poly2 ap = nef2p2(a), bp = nef2p2(b);
Poly2h x = minkowski_sum_2(ap, bp);
/** FIXME **/
PRINT("WARNING: minkowski() is not implemented yet for 2d objects!");
return CGAL_Nef_polyhedron2();
}
#else
CGAL_Nef_polyhedron2 minkowski2(CGAL_Nef_polyhedron2, CGAL_Nef_polyhedron2)
{
PRINT("WARNING: minkowski() is not implemented yet for 2d objects!");
return CGAL_Nef_polyhedron2();
}
#endif
#endif
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