McDecimaterT.hh 6.22 KB
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/* ========================================================================= *
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 *                                                                           *
 *                               OpenMesh                                    *
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 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
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 *           Department of Computer Graphics and Multimedia                  *
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 *                          All rights reserved.                             *
 *                            www.openmesh.org                               *
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 *                                                                           *
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 *---------------------------------------------------------------------------*
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 * This file is part of OpenMesh.                                            *
 *---------------------------------------------------------------------------*
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 *                                                                           *
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 * Redistribution and use in source and binary forms, with or without        *
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 * are met:                                                                  *
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 *                                                                           *
 * ========================================================================= */
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/** \file McDecimaterT.hh
 */

//=============================================================================
//
//  CLASS McDecimaterT
//
//=============================================================================

#ifndef OPENMESH_MC_DECIMATER_DECIMATERT_HH
#define OPENMESH_MC_DECIMATER_DECIMATERT_HH


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

#include <memory>
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#include <OpenMesh/Tools/Decimater/BaseDecimaterT.hh>
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//== NAMESPACE ================================================================

namespace OpenMesh  {
namespace Decimater {


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


/** Multiple choice decimater framework
    \see BaseModT, \ref decimater_docu
*/
template < typename MeshT >
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class McDecimaterT : virtual public BaseDecimaterT<MeshT> //virtual especially for the mixed decimater
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{
public: //-------------------------------------------------------- public types

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

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

  /// Constructor
  McDecimaterT( Mesh& _mesh );

  /// Destructor
  ~McDecimaterT();

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( size_t _n_collapses );

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

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

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  /**
   * Decimate only with constraints, while _factor gives the
   * percentage of the constraints that should be used
   */
  size_t decimate_constraints_only(float _factor);

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  size_t samples(){return randomSamples_;}
  void set_samples(const size_t _value){randomSamples_ = _value;}

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


  // reference to mesh
  Mesh&      mesh_;

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  size_t randomSamples_;
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};

//=============================================================================
} // END_NS_DECIMATER
} // END_NS_OPENMESH
//=============================================================================
#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_MULTIPLE_CHOICE_DECIMATER_DECIMATERT_CC)
#define OPENMESH_MULTIPLE_CHOICE_DECIMATER_TEMPLATES
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#include "McDecimaterT_impl.hh"
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#endif
//=============================================================================
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#endif // OPENMESH_MC_DECIMATER_DECIMATERT_HH defined
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//=============================================================================