/*===========================================================================*\
 *                                                                           *
 *                               OpenMesh                                    *
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/*===========================================================================*\
 *                                                                           *
 *   $Revision: 460 $                                                         *
 *   $Date: 2011-11-16 10:45:08 +0100 (Mi, 16 Nov 2011) $                   *
 *                                                                           *
 \*===========================================================================*/

/** \file MixedDecimaterT.cc
 */

//=============================================================================
//
//  CLASS MixedDecimaterT - IMPLEMENTATION
//
//=============================================================================

#ifndef OPENMESH_MIXED_DECIMATER_DECIMATERT_HH
#define OPENMESH_MIXED_DECIMATER_DECIMATERT_HH


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

#include <memory>
#include <OpenMesh/Tools/Decimater/McDecimaterT.hh>
#include <OpenMesh/Tools/Decimater/DecimaterT.hh>



//== NAMESPACE ================================================================

namespace OpenMesh  {
namespace Decimater {


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


/** Mixed decimater framework
    \see BaseModT, \ref decimater_docu
*/
template < typename MeshT >
class MixedDecimaterT : public McDecimaterT<MeshT>, public DecimaterT<MeshT>
{
public: //-------------------------------------------------------- public types

  typedef McDecimaterT< MeshT >         Self;
  typedef MeshT                         Mesh;
  typedef CollapseInfoT<MeshT>          CollapseInfo;
  typedef ModBaseT<MeshT>               Module;
  typedef std::vector< Module* >        ModuleList;
  typedef typename ModuleList::iterator ModuleListIterator;

public: //------------------------------------------------------ public methods

  /// Constructor
  MixedDecimaterT( Mesh& _mesh );

  /// Destructor
  ~MixedDecimaterT();

public:

  /** Decimate (perform _n_collapses collapses). Return number of
      performed collapses. If _n_collapses is not given reduce as
      much as possible */
  size_t decimate( const size_t _n_collapses, const float _mc_factor );

  /// Decimate to target complexity, returns number of collapses
  size_t decimate_to( size_t  _n_vertices, const float _mc_factor )
  {
    return ( (_n_vertices < this->mesh().n_vertices()) ?
       decimate( this->mesh().n_vertices() - _n_vertices, _mc_factor ) : 0 );
  }

  /** Decimate to target complexity (vertices and faces).
   *  Stops when the number of vertices or the number of faces is reached.
   *  Returns number of performed collapses.
   */
  size_t decimate_to_faces( const size_t  _n_vertices=0, const size_t _n_faces=0 , const float _mc_factor = 0.8);

private: //------------------------------------------------------- private data

};

//=============================================================================
} // END_NS_DECIMATER
} // END_NS_OPENMESH
//=============================================================================
#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_MIXED_DECIMATER_DECIMATERT_CC)
#define OPENMESH_MIXED_DECIMATER_TEMPLATES
#include "MixedDecimaterT.cc"
#endif
//=============================================================================
#endif // OPENMESH_MIXED_DECIMATER_DECIMATERT_HH
//=============================================================================