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 of CellInterface because of circular #include dependencies
template<
  typename TPixelType,
  typename TCellTraits
  >
class ITK_TEMPLATE_EXPORT CellInterface;

template<
  typename TPixelType,
  typename TCellTraits
  >
class ITK_TEMPLATE_EXPORT CellInterfaceVisitor:public LightObject
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(CellInterfaceVisitor);

  using Self = CellInterfaceVisitor;
  using Superclass = LightObject;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;
  using CellIdentifier = typename TCellTraits::CellIdentifier;

  itkTypeMacro(CellInterfaceVisitor, LightObject);

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

  virtual int GetCellTopologyId() = 0;

protected:
  CellInterfaceVisitor() = default;
  ~CellInterfaceVisitor() override = default;
};

template<
  typename TPixelType,
  typename TCellTraits,
  typename CellTopology,
  typename UserVisitor
  >
class CellInterfaceVisitorImplementation:
  public CellInterfaceVisitor< TPixelType, TCellTraits >, public UserVisitor
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(CellInterfaceVisitorImplementation);

  using Self = CellInterfaceVisitorImplementation;
  using Pointer = SmartPointer< Self >;
  using CellIdentifier = typename TCellTraits::CellIdentifier;

  itkNewMacro(Self);

  itkTypeMacro(CellInterfaceVisitorImplementation, LightObject);

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

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

protected:
  CellInterfaceVisitorImplementation() = default;
  ~CellInterfaceVisitorImplementation() override = default;
};
} // end namespace itk

#endif