Clifford Wolf:

	Added command line mode (stl export only)



git-svn-id: http://svn.clifford.at/openscad/trunk@106 b57f626f-c46c-0410-a088-ec61d464b74c

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
+