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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_SCENE_VISITOR_H__
+#define __FREESTYLE_SCENE_VISITOR_H__
+
+/** \file blender/freestyle/intern/scene_graph/SceneVisitor.h
+ *  \ingroup freestyle
+ *  \brief Class to visit (without doing anything) a scene graph structure
+ *  \author Emmanuel Turquin
+ *  \date 26/04/2003
+ */
+
+#include "../system/FreestyleConfig.h"
+
+#define VISIT_COMPLETE_DEF(type)               \
+	virtual void visit##type(type&) {}         \
+	virtual void visit##type##Before(type&) {} \
+	virtual void visit##type##After(type&) {}
+
+#define VISIT_DECL(type)             \
+	virtual void visit##type(type&);
+
+#define VISIT_COMPLETE_DECL(type)            \
+	virtual void visit##type##Before(type&); \
+	virtual void visit##type(type&);         \
+	virtual void visit##type##After(type&);
+
+class Node;
+class NodeShape;
+class NodeGroup;
+class NodeLight;
+class NodeCamera;
+class NodeDrawingStyle;
+class NodeTransform;
+
+class Rep;
+class LineRep;
+class OrientedLineRep;
+class TriangleRep;
+class VertexRep;
+class IndexedFaceSet;
+class DrawingStyle;
+class FrsMaterial;
+
+class LIB_SCENE_GRAPH_EXPORT SceneVisitor
+{
+public:
+	SceneVisitor() {}
+	virtual ~SceneVisitor() {}
+
+	virtual void beginScene() {}
+	virtual void endScene() {}
+
+	//
+	// visitClass methods
+	//
+	//////////////////////////////////////////////
+
+	VISIT_COMPLETE_DEF(Node)
+	VISIT_COMPLETE_DEF(NodeShape)
+	VISIT_COMPLETE_DEF(NodeGroup)
+	VISIT_COMPLETE_DEF(NodeLight)
+	VISIT_COMPLETE_DEF(NodeCamera)
+	VISIT_COMPLETE_DEF(NodeDrawingStyle)
+	VISIT_COMPLETE_DEF(NodeTransform)
+
+	VISIT_COMPLETE_DEF(Rep)
+	VISIT_COMPLETE_DEF(LineRep)
+	VISIT_COMPLETE_DEF(OrientedLineRep)
+	VISIT_COMPLETE_DEF(TriangleRep)
+	VISIT_COMPLETE_DEF(VertexRep)
+	VISIT_COMPLETE_DEF(IndexedFaceSet)
+	VISIT_COMPLETE_DEF(DrawingStyle)
+	VISIT_COMPLETE_DEF(FrsMaterial)
+};
+
+#endif // __FREESTYLE_SCENE_VISITOR_H__