/**************************************************************************\
 *
 *  This file is part of the Coin 3D visualization library.
 *  Copyright (C) 1998-2002 by Systems in Motion. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  version 2.1 as published by the Free Software Foundation. See the
 *  file LICENSE.LGPL at the root directory of the distribution for
 *  more details.
 *
 *  If you want to use Coin for applications not compatible with the
 *  LGPL, please contact SIM to acquire a Professional Edition license.
 *
 *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
 *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
 *
\**************************************************************************/

#ifndef COIN_SOBBOXMODELMATRIXELEMENT_H
#define COIN_SOBBOXMODELMATRIXELEMENT_H

#include <Inventor/elements/SoModelMatrixElement.h>

class SoLocalBBoxMatrixElement;


class COIN_DLL_API SoBBoxModelMatrixElement : public SoModelMatrixElement {
  typedef SoModelMatrixElement inherited;

  SO_ELEMENT_HEADER(SoBBoxModelMatrixElement);
public:
  static void initClass(void);
protected:
  virtual ~SoBBoxModelMatrixElement();

public:
  virtual void init(SoState * state);

  virtual void push(SoState * state);

  static  void reset(SoState * const state, SoNode * const node);
  static  void pushMatrix(SoState * const state, SbMatrix & matrix,
                          SbMatrix & localmatrix);
  static  void popMatrix(SoState * const state, const SbMatrix & matrix,
                         const SbMatrix & localmatrix);

protected:
  virtual void makeEltIdentity(void);
  virtual void setElt(const SbMatrix & matrix);
  virtual void multElt(const SbMatrix & matrix);
  virtual void translateEltBy(const SbVec3f & translation);
  virtual void rotateEltBy(const SbRotation & translation);
  virtual void scaleEltBy(const SbVec3f & scaleFactor);

// the following two functions should not be called - only for debug usage
  virtual SbMatrix pushMatrixElt();
  virtual void popMatrixElt(const SbMatrix & matrix);

private:
  SoLocalBBoxMatrixElement *getLocal();

  SoState *state;
};

#endif // !COIN_SOBBOXMODELMATRIXELEMENT_H
