rtkForwardProjectionImageFilter.h

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/*=========================================================================
 *
 *  Copyright RTK 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
 *
 *         https://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 rtkForwardProjectionImageFilter_h
#define rtkForwardProjectionImageFilter_h

#include <itkInPlaceImageFilter.h>
#include "rtkThreeDCircularProjectionGeometry.h"
#include "rtkMacro.h"

namespace rtk
{

template <class TInputImage, class TOutputImage = TInputImage>
class ITK_TEMPLATE_EXPORT ForwardProjectionImageFilter : public itk::InPlaceImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ForwardProjectionImageFilter);

  using Self = ForwardProjectionImageFilter;
  using Superclass = itk::InPlaceImageFilter<TInputImage, TOutputImage>;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;

  using GeometryType = rtk::ThreeDCircularProjectionGeometry;
  using GeometryPointer = typename GeometryType::ConstPointer;

  itkTypeMacro(ForwardProjectionImageFilter, itk::InPlaceImageFilter);

  itkGetConstObjectMacro(Geometry, GeometryType);
  itkSetConstObjectMacro(Geometry, GeometryType);

protected:
  ForwardProjectionImageFilter()
    : m_Geometry(nullptr)
  {
    this->SetNumberOfRequiredInputs(2);
    this->SetInPlace(true);
  };

  ~ForwardProjectionImageFilter() override = default;

  void
  VerifyPreconditions() ITKv5_CONST override;

  void
  GenerateInputRequestedRegion() override;

  void
  VerifyInputInformation() const override
  {}

private:
  GeometryPointer m_Geometry;
};

} // end namespace rtk

#ifndef ITK_MANUAL_INSTANTIATION
#  include "rtkForwardProjectionImageFilter.hxx"
#endif

#endif