BaseDecimaterT.hh

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

#ifndef OPENMESH_BASE_DECIMATER_DECIMATERT_HH
#define OPENMESH_BASE_DECIMATER_DECIMATERT_HH


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

#include <memory>

#include <OpenMesh/Core/Utils/Property.hh>
#include <OpenMesh/Tools/Decimater/ModBaseT.hh>
#include <OpenMesh/Core/Utils/Noncopyable.hh>
#include <OpenMesh/Tools/Decimater/Observer.hh>



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

namespace OpenMesh  {
namespace Decimater {


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


class BaseDecimaterModule
{
};

template < typename MeshT >
class BaseDecimaterT : private Utils::Noncopyable
{
public: //-------------------------------------------------------- public types

  typedef BaseDecimaterT< 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
  explicit BaseDecimaterT(Mesh& _mesh);
  virtual ~BaseDecimaterT();

  bool initialize();


  bool is_initialized() const { return initialized_; }


  void info( std::ostream& _os );

public: //--------------------------------------------------- module management

  void set_observer(Observer* _o)
  {
      observer_ = _o;
  }

  Observer* observer()
  {
      return observer_;
  }

  Mesh& mesh() { return mesh_; }

  template < typename _Module >
  bool add( ModHandleT<_Module>& _mh )
  {
    if (_mh.is_valid())
      return false;

    _mh.init( new _Module(mesh()) );
    all_modules_.push_back( _mh.module() );

    set_uninitialized();

    return true;
  }


  template < typename _Module >
  bool remove( ModHandleT<_Module>& _mh )
  {
    if (!_mh.is_valid())
      return false;

    typename ModuleList::iterator it = std::find(all_modules_.begin(),
                                                 all_modules_.end(),
                                                 _mh.module() );

    if ( it == all_modules_.end() ) // module not found
      return false;

    delete *it;
    all_modules_.erase( it ); // finally remove from list
    _mh.clear();

    set_uninitialized();
    return true;
  }


  template < typename Module >
  Module& module( ModHandleT<Module>& _mh )
  {
    assert( _mh.is_valid() );
    return *_mh.module();
  }


protected:

  bool notify_observer(size_t _n_collapses)
  {
    if (observer() && _n_collapses % observer()->get_interval() == 0)
    {
      observer()->notify(_n_collapses);
      return !observer()->abort();
    }
    return true;
  }

  void set_uninitialized() {
    initialized_ = false;
    cmodule_ = 0;
    bmodules_.clear();
  }

  void update_modules(CollapseInfo& _ci)
  {
    typename ModuleList::iterator m_it, m_end = bmodules_.end();
    for (m_it = bmodules_.begin(); m_it != m_end; ++m_it)
      (*m_it)->postprocess_collapse(_ci);
    cmodule_->postprocess_collapse(_ci);
  }


protected: //---------------------------------------------------- private methods

  bool is_collapse_legal(const CollapseInfo& _ci);

  float collapse_priority(const CollapseInfo& _ci);

  void preprocess_collapse(CollapseInfo& _ci);

  void postprocess_collapse(CollapseInfo& _ci);

  void set_error_tolerance_factor(double _factor);

  void reset(){ initialized_ = false; };


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


  Mesh&      mesh_;

  ModuleList bmodules_;

  Module*    cmodule_;

  ModuleList all_modules_;

  bool       initialized_;

  Observer* observer_;

};

//=============================================================================
} // END_NS_DECIMATER
} // END_NS_OPENMESH
//=============================================================================
#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_BASE_DECIMATER_DECIMATERT_CC)
#define OPENMESH_BASE_DECIMATER_TEMPLATES
#include "BaseDecimaterT_impl.hh"
#endif
//=============================================================================
#endif // OPENMESH_BASE_DECIMATER_DECIMATERT_HH defined
//=============================================================================