#line 1 "/user/cvsspst/ees1cg/RAVL/RAVL-0.7/GUI/3D/DLight3D.hh"
// This file is part of RAVL, Recognition And Vision Library 
// Copyright (C) 2001, University of Surrey
// This code may be redistributed under the terms of the GNU Lesser
// General Public License (LGPL). See the lgpl.licence file for details or
// see http://www.gnu.org/copyleft/lesser.html
// file-header-ends-here
#ifndef RAVLDLIGHT3D_HEADER
#define RAVLDLIGHT3D_HEADER 1
///////////////////////////////////////////////////
//! docentry="Ravl.GUI.3D"
//! rcsid="$Id: DLight3D.hh,v 1.2 2001/08/10 13:33:36 craftit Exp $"
//! file="Ravl/GUI/3D/DLight3D.hh"
//! lib=RavlGUI3D
//! author="Charles Galambos"
//! date="18/06/99"

#include "Ravl/GUI/DObject3D.hh"

namespace RavlGUIN {
  
  ///////////////////////////////////////////////
  //! userlevel=Develop
  //: Draw some lines.
  
  class DLight3DBodyC
    : public DObject3DBodyC
  {
  public:
    DLight3DBodyC(const RealRGBValueC &nCol,const Point3dC &nPos,int nn)
      : n(nn),
      colour(nCol),
      pos(nPos),
      spot(false)
      {}
    //: Constructor.
    
    virtual bool Render(Canvas3DC &c3d);
    //: Render object.
    
  protected:
    GLenum LightNo(IntT no);
    //: Convert Light number.
    
    IntT n;           // Number of light. 0-7
    RealRGBValueC colour; // Colour of light.
    Point3dC pos;     // Position of light.
    bool spot;    // Spot light ?
    Vector3dC dir;    // Direction of spot light.
    RealT  ang;       // angle of light.
  };
  
  //! userlevel=Normal
  //: Draw some lines.
  
  class DLight3DC
    : public DObject3DC
  {
  public:
    DLight3DC(const RealRGBValueC &col,const Point3dC &nPos,int nn = 0)
      : DObject3DC(*new DLight3DBodyC(col,nPos,nn))
      {}
    //: Constructor.
    
  protected:
    DLight3DBodyC &Body() 
      { return dynamic_cast<DLight3DBodyC &>(DObject3DC::Body()); }
    
    const DLight3DBodyC &Body() const
      { return dynamic_cast<const DLight3DBodyC &>(DObject3DC::Body()); }  
    
  public:  
  };
}


#endif