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+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2010 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __FREESTYLE_NODE_TRANSFORM_H__
+#define __FREESTYLE_NODE_TRANSFORM_H__
+
+/** \file blender/freestyle/intern/scene_graph/NodeTransform.h
+ *  \ingroup freestyle
+ *  \brief Class to represent a transform node. A Transform node contains one or several children,
+ *  \brief all affected by the transformation.
+ *  \author Stephane Grabli
+ *  \date 06/02/2002
+ */
+
+#include "NodeGroup.h"
+
+#include "../geometry/Geom.h"
+
+#include "../system/FreestyleConfig.h"
+
+using namespace Geometry;
+
+class LIB_SCENE_GRAPH_EXPORT NodeTransform : public NodeGroup
+{
+public:
+	inline NodeTransform() : NodeGroup()
+	{
+		_Matrix = Matrix44r::identity();
+		_Scaled = false;
+	}
+
+	virtual ~NodeTransform() {}
+
+	/*! multiplys the current matrix by the x, y, z translation matrix. */
+	void Translate(real x, real y, real z);
+
+	/*! multiplys the current matrix by a rotation matrix
+	 *    iAngle
+	 *      The rotation angle
+	 *    x, y, z
+	 *      The rotation axis
+	 */
+	void Rotate(real iAngle, real x, real y, real z);
+
+	/*! multiplys the current matrix by a scaling matrix.
+	 *    x, y, z
+	 *      The scaling coefficients with respect to the x,y,z axis
+	 */
+	void Scale(real x, real y, real z);
+
+	/*! Multiplys the current matrix by iMatrix */
+	void MultiplyMatrix(const Matrix44r &iMatrix);
+
+	/*! Sets the current matrix to iMatrix */
+	void setMatrix(const Matrix44r &iMatrix);
+
+	/*! Accept the corresponding visitor */
+	virtual void accept(SceneVisitor& v);
+
+	/*! Overloads the Node::AddBBox in order to take care about the transformation */
+	virtual void AddBBox(const BBox<Vec3r>& iBBox);
+
+	/*! Checks whether a matrix contains a scale factor or not.
+	 *  Returns true if yes.
+	 *    M
+	 *      The matrix to check
+	 */
+	bool isScaled(const Matrix44r &M);
+
+	/*! accessors */
+	inline const Matrix44r& matrix() const
+	{
+		return _Matrix;
+	}
+
+	inline bool scaled() const
+	{
+		return _Scaled;
+	}
+
+private:
+	Matrix44r _Matrix;
+	bool _Scaled;
+};
+
+#endif // __FREESTYLE_NODE_TRANSFORM_H__