dispList.h

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//////////////////////////////////////////////////////////////////////
// 6/6/02       Aaron Lefohn    Scientific Computing and Imaging Institute
// School of Computing          University of Utah
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License, or (at your option) any later version.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef DISP_LIST___H__
#define DISP_LIST___H__

#include "../core/gliftObject.h"
#include "command.h"
#include <GL/glew.h>
#include <assert.h>

namespace glift {

//////////////////////////////////////////////////////////////////////////
///
/// dispList.h: interface for the DispList class.
/// 
/// - This class encapsulates using a display list with any allowable OpenGL calls.
/// - The OpenGL call sequence is defined in the callback passed to the 'compile()' fcn.
/// - The callback is of type 'void name()' or 'void CallType::name() const' and the
///   'compile' command is called as:
///   
///     1) compile( name )
///     2) compile( new MemberCommand0<CallType>(objPtr, &CallType::name) )
///     
/// - This class is NOT meant to be subclassed!
///////////////////////////////////////////////////////////////////////

class _export_ DispList : public GliftObject /// Final
{
public:
   DispList();
   ~DispList();

   inline void issue(); /// Issue OpenGL commands via displayList (only if compiled).

   /// Compile OpenGL display list 'glCommands()'
   void compile( void (*glCommands)() );
   void compile( Command* glCommands ); //Deletes 'glCommands'!!
   bool isCompiled() const {return m_isCompiled;}

private:        
   GLuint    m_dispList;        /// The OpenGL display list ID
   bool   m_isCompiled;
};

inline void DispList::issue()
{
   assert( m_dispList > 0 );

   glCallList( m_dispList );
}

} /// End of namespace glift

#endif 

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