#ifndef __CPM__ALGORITHMS__QUADEDGE__DECIMATIONFILTER__H__
#define __CPM__ALGORITHMS__QUADEDGE__DECIMATIONFILTER__H__

#include <itkMeshToMeshFilter.h>

namespace cpm
{
  namespace Algorithms
  {
    namespace QuadEdge
    {
      /**
       */
      template< class I, class O, class C >
      class DecimationFilter
        : public itk::MeshToMeshFilter< I, O >
      {
      public:
        typedef DecimationFilter                Self;
        typedef itk::MeshToMeshFilter< I, O >   Superclass;
        typedef itk::SmartPointer< Self >       Pointer;
        typedef itk::SmartPointer< const Self > ConstPointer;

        typedef I TInputMesh;
        typedef O TOutputMesh;
        typedef C TCriterion;

      public:
        itkTypeMacro( DecimationFilter, itkMeshToMeshFilter );
        itkSetObjectMacro( Criterion, C );

      protected:
        DecimationFilter( );
        virtual ~DecimationFilter( );

        virtual void GenerateData( );
        virtual void Initialize( );

        virtual void FillPriorityQueue( ) = 0;
        virtual void Extract( ) = 0;
        virtual bool ProcessWithoutAnyTopologicalGuarantee( ) = 0;
        virtual bool ProcessWithTopologicalGuarantee( ) = 0;
        virtual bool IsCriterionSatisfied( ) = 0;

      private:
        // Purposely not implemented
        DecimationFilter( const Self& );
        void operator=( const Self& );

      protected:
        typename C::Pointer m_Criterion;
        unsigned long       m_Iteration;
      };

    } // ecapseman

  } // ecapseman

} // ecapseman

#include <cpm/Algorithms/QuadEdge/DecimationFilter.hxx>

#endif // __CPM__ALGORITHMS__QUADEDGE__DECIMATIONFILTER__H__

// eof - $RCSfile$