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Diffstat (limited to 'export.cc')
| -rw-r--r-- | export.cc | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/export.cc b/export.cc new file mode 100644 index 0000000..017c8e3 --- /dev/null +++ b/export.cc @@ -0,0 +1,101 @@ +/* + * 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. + * + * 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 + * + */ + +#define INCLUDE_ABSTRACT_NODE_DETAILS + +#include "openscad.h" + +#include <QApplication> + +#ifdef ENABLE_CGAL + +void export_stl(CGAL_Nef_polyhedron *root_N, QString filename, QProgressDialog *pd) +{ + CGAL_Polyhedron P; + root_N->convert_to_Polyhedron(P); + + typedef CGAL_Polyhedron::Vertex Vertex; + typedef CGAL_Polyhedron::Vertex_const_iterator VCI; + typedef CGAL_Polyhedron::Facet_const_iterator FCI; + typedef CGAL_Polyhedron::Halfedge_around_facet_const_circulator HFCC; + + FILE *f = fopen(filename.toAscii().data(), "w"); + if (!f) { + PRINT("Can't open STL file for STL export."); + current_win = NULL; + return; + } + fprintf(f, "solid\n"); + + int facet_count = 0; + for (FCI fi = P.facets_begin(); fi != P.facets_end(); ++fi) { + HFCC hc = fi->facet_begin(); + HFCC hc_end = hc; + Vertex v1, v2, v3; + v1 = *VCI((hc++)->vertex()); + v3 = *VCI((hc++)->vertex()); + do { + v2 = v3; + v3 = *VCI((hc++)->vertex()); + double x1 = CGAL::to_double(v1.point().x()); + double y1 = CGAL::to_double(v1.point().y()); + double z1 = CGAL::to_double(v1.point().z()); + double x2 = CGAL::to_double(v2.point().x()); + double y2 = CGAL::to_double(v2.point().y()); + double z2 = CGAL::to_double(v2.point().z()); + double x3 = CGAL::to_double(v3.point().x()); + double y3 = CGAL::to_double(v3.point().y()); + double z3 = CGAL::to_double(v3.point().z()); + QString vs1, vs2, vs3; + vs1.sprintf("%f %f %f", x1, y1, z1); + vs2.sprintf("%f %f %f", x2, y2, z2); + vs3.sprintf("%f %f %f", x3, y3, z3); + if (vs1 != vs2 && vs1 != vs3 && vs2 != vs3) { + + double nx = (y1-y2)*(z1-z3) - (z1-z2)*(y1-y3); + double ny = (z1-z2)*(x1-x3) - (x1-x2)*(z1-z3); + double nz = (x1-x2)*(y1-y3) - (y1-y2)*(x1-x3); + double n_scale = 1 / sqrt(nx*nx + ny*ny + nz*nz); + fprintf(f, " facet normal %f %f %f\n", + nx * n_scale, ny * n_scale, nz * n_scale); + fprintf(f, " outer loop\n"); + fprintf(f, " vertex %s\n", vs1.toAscii().data()); + fprintf(f, " vertex %s\n", vs2.toAscii().data()); + fprintf(f, " vertex %s\n", vs3.toAscii().data()); + fprintf(f, " endloop\n"); + fprintf(f, " endfacet\n"); + } + } while (hc != hc_end); + if (pd) { + pd->setValue(facet_count++); + QApplication::processEvents(); + } + } + + fprintf(f, "endsolid\n"); + fclose(f); +} + +void export_off(CGAL_Nef_polyhedron *root_N, QString filename, QProgressDialog *pd) +{ +} + +#endif + |