/**************************************************************************\
 *
 *  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_SOLIGHTPATH_H
#define COIN_SOLIGHTPATH_H

#include <Inventor/lists/SbList.h>

class SoNode;
class SoTempPath;

class COIN_DLL_API SoLightPath {
public:
  SoLightPath(SoNode *node, const int approxlength);
  SoLightPath(const int approxlength);
  ~SoLightPath();

  void setHead(SoNode * const node);
  void append(const int childindex);
  void push(const int childindex);
  void pop(void);
  void setTail(const int childindex);
  SoNode *getTail(void) const;
  SoNode *getHead(void) const;
  SoNode *getNode(const int index) const;
  int getIndex(const int index) const;
  int getFullLength() const;
  void truncate(const int startindex);

  void makeTempPath(SoTempPath *path) const;
private:
  SoNode *headnode;
  SbList <int> indices;
};

#endif // COIN_SOLIGHTPATH_H
