itkCellInterfaceVisitor.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkCellInterfaceVisitor_h
#define __itkCellInterfaceVisitor_h

#include "itkLightObject.h"
#include "itkObjectFactory.h"

namespace itk
{
// forward reference CellInterface
template<
  typename TPixelType,
  typename TCellTraits
  >
class CellInterface;

template<
  typename TPixelType,
  typename TCellTraits
  >
class CellInterfaceVisitor:public LightObject
{
public:
  typedef CellInterfaceVisitor                  Self;
  typedef LightObject                           Superclass;
  typedef SmartPointer< Self >                  Pointer;
  typedef SmartPointer< const Self >            ConstPointer;
  typedef typename TCellTraits::CellIdentifier  CellIdentifier;

  itkTypeMacro(CellInterfaceVisitor, LightObject);

  virtual void VisitFromCell(CellIdentifier cellId, CellInterface< TPixelType,
                                                                   TCellTraits > *) = 0;

  virtual int GetCellTopologyId() = 0;

protected:
  CellInterfaceVisitor() {}
  ~CellInterfaceVisitor() {}

private:
  CellInterfaceVisitor(const Self &); //purposely not implemented
  void operator=(const Self &);       //purposely not implemented
};

template<
  typename TPixelType,
  typename TCellTraits,
  typename CellTopology,
  typename UserVisitor
  >
class CellInterfaceVisitorImplementation:
  public CellInterfaceVisitor< TPixelType, TCellTraits >, public UserVisitor
{
public:
  typedef CellInterfaceVisitorImplementation    Self;
  typedef SmartPointer< Self >                  Pointer;
  typedef typename TCellTraits::CellIdentifier  CellIdentifier;

  itkNewMacro(Self);

  itkTypeMacro(CellInterfaceVisitorImplementation, LightObject);

  virtual int GetCellTopologyId() { return CellTopology::GetTopologyId(); }

  void VisitFromCell(CellIdentifier cellId, CellInterface< TPixelType,
                                                           TCellTraits > *c)
  {
    this->UserVisitor::Visit(cellId, (CellTopology *)c);
  }

protected:
  CellInterfaceVisitorImplementation() {}
  ~CellInterfaceVisitorImplementation() {}

private:
  CellInterfaceVisitorImplementation(const Self &); //purposely not implemented
  void operator=(const Self &);                     //purposely not implemented
};
} // end namespace itk

#endif