Clifford Wolf:

	Added dxf dimension function
	(still incomplete)



git-svn-id: http://svn.clifford.at/openscad/trunk@73 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 92 insertions, 0 deletions

diff --git a/dxfdim.cc b/dxfdim.cc
new file mode 100644
index 0000000..0ae879a
--- /dev/null
+++ b/dxfdim.cc
@@ -0,0 +1,92 @@
+/*
+ *  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
+ *
+ */
+
+#include "openscad.h"
+
+Value builtin_dxf_dim(const QVector<QString> &argnames, const QVector<Value> &args)
+{
+	QString filename;
+	QString layername;
+	QString name;
+	double xorigin = 0;
+	double yorigin = 0;
+	double scale = 1;
+
+	for (int i = 0; i < argnames.count() && i < args.count(); i++) {
+		if (argnames[i] == "file")
+			filename = args[i].text;
+		if (argnames[i] == "layer")
+			filename = args[i].text;
+		if (argnames[i] == "origin")
+			args[i].getv2(xorigin, yorigin);
+		if (argnames[i] == "scale")
+			args[i].getnum(scale);
+		if (argnames[i] == "name")
+			name = args[i].text;
+	}
+
+	DxfData dxf(36, 0, 0, filename, layername, xorigin, yorigin, scale);
+
+	for (int i = 0; i < dxf.dims.count(); i++)
+	{
+		if (!name.isNull() && dxf.dims[i].name != name)
+			continue;
+
+		DxfData::Dim *d = &dxf.dims[i];
+		int type = d->type & 7;
+
+		if (type == 0) {
+			// Rotated, horizontal or vertical
+			double x = d->coords[4][0] - d->coords[3][0];
+			double y = d->coords[4][1] - d->coords[3][1];
+			double angle = d->angle;
+			double distance_projected_on_line = fabs(x * sin(angle*M_PI/180) + y * cos(angle*M_PI/180));
+			return Value(distance_projected_on_line);
+		}
+		if (type == 1) {
+			// Aligned
+		}
+		if (type == 2) {
+			// Angular
+		}
+		if (type == 3) {
+			// Diameter
+		}
+		if (type == 4) {
+			// Radius
+		}
+		if (type == 5) {
+			// Angular 3 Point
+		}
+
+		PRINTA("WARINING: Dimension `%1' in `%2', layer `%3' has unsupported type!", name, filename, layername);
+		return Value();
+	}
+
+	PRINTA("WARINING: Can't find dimension `%1' in `%2', layer `%3'!", name, filename, layername);
+
+	return Value();
+}
+
+void initialize_builtin_dxf_dim()
+{
+	builtin_functions["dxf_dim"] = new BuiltinFunction(&builtin_dxf_dim);
+}
+