/*===========================================================================*\
 *                                                                           *
 *                               OpenMesh                                    *
 *      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen      *
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 *---------------------------------------------------------------------------*
 *  This file is part of OpenMesh.                                           *
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 *  OpenMesh is free software: you can redistribute it and/or modify         *
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 *  or inline functions from this file, or you compile this file and         *
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 *  GNU Lesser General Public License. This exception does not however       *
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\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision: 448 $                                                        *
 *   $Date: 2011-11-04 13:59:37 +0100 (Fri, 04 Nov 2011) $                   *
 *                                                                           *
\*===========================================================================*/

/** \file ModEdgeLengthT.hh
 */

//=============================================================================
//
//  CLASS ModEdgeLengthT
//
//=============================================================================


#ifndef MB_MODEDGELENGTHT_HH
#define MB_MODEDGELENGTHT_HH


//== INCLUDES =================================================================

#include <OpenMesh/Tools/Decimater/ModBaseT.hh>
#include <float.h>


//== NAMESPACES ===============================================================

namespace OpenMesh  {
namespace Decimater {


//== CLASS DEFINITION =========================================================


template <class DecimaterT>
class ModEdgeLengthT : public ModBaseT<DecimaterT>
{
public:
   
  DECIMATING_MODULE( ModEdgeLengthT, DecimaterT, EdgeLength );

  /// Constructor
  ModEdgeLengthT(DecimaterT& _dec, 
		 float _edge_length = FLT_MAX,
		 bool  _is_binary   = true);
 

  /// get edge_length
  float edge_length() const { return edge_length_; }

  /// set edge_length
  void set_edge_length(float _f) 
  { edge_length_ = _f; sqr_edge_length_ = _f*_f; }
  

  /** Compute priority:
      Binary mode: Don't collapse edges longer then edge_length_
      Cont. mode:  Collapse smallest edge first, but
                   don't collapse edges longer as edge_length_
  */
  float collapse_priority(const CollapseInfo& _ci);


private:

  Mesh&  mesh_;
  typename Mesh::Scalar  edge_length_, sqr_edge_length_;
};


//=============================================================================
} // END_NS_DECIMATER
} // END_NS_OPENMESH
//=============================================================================
#if defined(INCLUDE_TEMPLATES) && !defined(MB_MODEDGELENGTHT_C)
#define MB_MODEDGELENGTHT_TEMPLATES
#include "ModEdgeLengthT.cc"
#endif
//=============================================================================
#endif // MB_MODEDGELENGTHT_HH defined
//=============================================================================