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//
// Filename : Node.h
// Author(s) : Stephane Grabli
// Purpose : Abstract class for scene graph nodes. Inherits from
// BaseObject which defines the addRef release mechanism.
// Date of creation : 24/01/2002
//
///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) : Please refer to the COPYRIGHT file distributed
// with this source distribution.
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef NODE_H
# define NODE_H
# include "../system/FreestyleConfig.h"
# include "../system/BaseObject.h"
# include "SceneVisitor.h"
# include "../geometry/BBox.h"
# include "../geometry/Geom.h"
# include "../system/Precision.h"
using namespace std;
using namespace Geometry;
class LIB_SCENE_GRAPH_EXPORT Node : public BaseObject
{
public:
inline Node() : BaseObject() {}
inline Node(const Node& iBrother) : BaseObject()
{
_BBox = iBrother.bbox();
}
virtual ~Node(){}
/*! Accept the corresponding visitor
* Each inherited node
* must overload this method
*/
virtual void accept(SceneVisitor& v) {
v.visitNode(*this);
}
/*! bounding box management */
/*! Returns the node bounding box
* If no bounding box exists, an empty bbox
* is returned
*/
virtual const BBox<Vec3r>& bbox() const {return _BBox;}
/*! Sets the Node bounding box */
virtual void SetBBox(const BBox<Vec3r>& iBox) {_BBox = iBox;}
/*! Makes the union of _BBox and iBox */
virtual void AddBBox(const BBox<Vec3r>& iBox)
{
if(iBox.empty())
return;
if(_BBox.empty())
_BBox = iBox;
else
_BBox += iBox;
}
/*! Updates the BBox */
virtual const BBox<Vec3r>& UpdateBBox() {return _BBox;}
/*! Clears the bounding box */
virtual void clearBBox() { _BBox.clear(); }
protected:
private:
BBox<Vec3r> _BBox;
};
#endif // NODE_H
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