Clifford Wolf:

	Added fundamential backend data structures
	(it is all still untested)



git-svn-id: http://svn.clifford.at/openscad/trunk@3 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 90 insertions, 0 deletions

diff --git a/value.cc b/value.cc
new file mode 100644
index 0000000..d6af1a3
--- /dev/null
+++ b/value.cc
@@ -0,0 +1,90 @@
+/*
+ *  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"
+#include <math.h>
+
+Value& Value::operator = (const Value &v) {
+	x = v.x;
+	y = v.y;
+	z = v.z;
+	is_vector = v.is_vector;
+	is_nan = v.is_nan;
+	return *this;
+}
+
+Value Value::operator + (const Value &v) const {
+	if (is_nan || v.is_nan)
+		return Value();
+	if (is_vector && v.is_vector)
+		return Value(x + v.x, y + v.y, z + v.z);
+	if (!is_vector && !v.is_vector)
+		return Value(x + v.x);
+	return Value();
+}
+
+Value Value::operator - (const Value &v) const {
+	if (is_nan || v.is_nan)
+		return Value();
+	if (is_vector && v.is_vector)
+		return Value(x - v.x, y - v.y, z - v.z);
+	if (!is_vector && !v.is_vector)
+		return Value(x - v.x);
+	return Value();
+}
+
+Value Value::operator * (const Value &v) const {
+	if (is_nan || v.is_nan)
+		return Value();
+	if (is_vector && v.is_vector) {
+		double nx = (y-v.y)*(z-v.z) - (z-v.z)*(y-v.y);
+		double ny = (z-v.z)*(x-v.x) - (x-v.x)*(z-v.z);
+		double nz = (x-v.x)*(y-v.y) - (y-v.y)*(x-v.x);
+		return Value(nx, ny, nz);
+	}
+	if (is_vector) {
+		return Value(x * v.x, y * v.x, z * v.x);
+	}
+	if (v.is_vector) {
+		return Value(x * v.x, x * v.y, x * v.z);
+	}
+	return Value(x * v.x);
+}
+
+Value Value::operator / (const Value &v) const {
+	if (is_nan || v.is_nan || is_vector || v.is_vector)
+		return Value();
+	return Value(x / v.x);
+}
+
+Value Value::operator % (const Value &v) const {
+	if (is_nan || v.is_nan || is_vector || v.is_vector)
+		return Value();
+	return Value(fmod(x, v.x));
+}
+
+Value Value::inv() const {
+	if (is_nan)
+		return Value();
+	if (is_vector)
+		return Value(-x, -y, -z);
+	return Value(-x);
+}
+