/*
 * ***** 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.
 *
 * ***** 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"

#ifdef WITH_CXX_GUARDEDALLOC
#include "MEM_guardedalloc.h"
#endif

namespace Freestyle {

#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)

#ifdef WITH_CXX_GUARDEDALLOC
	MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:SceneVisitor")
#endif
};

} /* namespace Freestyle */

#endif // __FREESTYLE_SCENE_VISITOR_H__
