#ifndef COIN_SOLIGHTELEMENT_H
#define COIN_SOLIGHTELEMENT_H

/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
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 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
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 * this software without specific prior written permission.
 * 
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#include <Inventor/elements/SoAccumulatedElement.h>
#include <Inventor/lists/SoNodeList.h>
#include <Inventor/lists/SbList.h>
#include <Inventor/SbMatrix.h>

class SoLight;

class COIN_DLL_API SoLightElement : public SoAccumulatedElement {
  typedef SoAccumulatedElement inherited;

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

public:
  virtual void init(SoState * state);
  virtual void push(SoState * state);
  static  void add(SoState * const state, SoLight * const light,
                   const SbMatrix & matrix);
  static  const SoNodeList & getLights(SoState * const state);
  static  const SbMatrix & getMatrix(SoState * const state,
                                     const int index);

protected:
  SoNodeList lights;
  SbList <SbMatrix> * matrixlist;

private:

  // dummy class needed to initialize didalloc when constructed.
  class so_light_elem_flag {
  public:
    so_light_elem_flag(void) {
      this->state = FALSE;
    }
    SbBool state;
  };
  so_light_elem_flag didalloc;
};

#endif // !COIN_SOLIGHTELEMENT_H
