openscad/src/dxftess.cc

58 lines
2.0 KiB
C++

/*
* 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
*
*/
#include "printutils.h"
#ifdef ENABLE_CGAL
#include "dxftess-cgal.cc"
#else
#include "dxftess-glu.cc"
#endif
/*!
Converts all paths in the given DxfData to PolySet::borders polygons
without tesselating. Vertex ordering of the resulting polygons
will follow the paths' is_inner flag.
*/
void dxf_border_to_ps(PolySet *ps, const DxfData &dxf)
{
for (size_t i = 0; i < dxf.paths.size(); i++) {
const DxfData::Path &path = dxf.paths[i];
if (!path.is_closed)
continue;
ps->borders.push_back(PolySet::Polygon());
for (size_t j = 1; j < path.indices.size(); j++) {
double x = dxf.points[path.indices[j]][0], y = dxf.points[path.indices[j]][1], z = 0.0;
ps->grid.align(x, y, z);
if (path.is_inner) {
ps->borders.back().push_back(Vector3d(x, y, z));
} else {
ps->borders.back().insert(ps->borders.back().begin(), Vector3d(x, y, z));
}
}
}
}