rtkDisplacedDetectorImageFilter.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 rtkDisplacedDetectorImageFilter_h
#define rtkDisplacedDetectorImageFilter_h

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

namespace rtk
{

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

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

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  static constexpr unsigned int NDimension = TInputImage::ImageDimension;
  using OutputImageRegionType = typename OutputImageType::RegionType;
  using WeightImageType = itk::Image<double, 1>;

  using GeometryType = ThreeDCircularProjectionGeometry;
  using GeometryConstPointer = GeometryType::ConstPointer;

  itkNewMacro(Self);

#ifdef itkOverrideGetNameOfClassMacro
  itkOverrideGetNameOfClassMacro(DisplacedDetectorImageFilter);
#else
  itkTypeMacro(DisplacedDetectorImageFilter, ImageToImageFilter);
#endif


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

  itkGetMacro(PadOnTruncatedSide, bool);
  itkSetMacro(PadOnTruncatedSide, bool);

  void
  SetOffsets(double minOffset, double maxOffset);
  itkGetMacro(MinimumOffset, double);
  itkGetMacro(MaximumOffset, double);

  itkGetMacro(Disable, bool);
  itkSetMacro(Disable, bool);

protected:
  DisplacedDetectorImageFilter();

  ~DisplacedDetectorImageFilter() override = default;

  itkGetMacro(InferiorCorner, double);
  itkGetMacro(SuperiorCorner, double);

  void
  VerifyPreconditions() ITKv5_CONST override;

  void
  GenerateInputRequestedRegion() override;

  void
  GenerateOutputInformation() override;

  void
  DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;

  // Iterative filters do not need padding
  bool m_PadOnTruncatedSide{ true };

private:
  GeometryConstPointer m_Geometry;

  double m_MinimumOffset{ 0. };
  double m_MaximumOffset{ 0. };

  bool m_OffsetsSet{ false };

  double m_InferiorCorner{ 0. };
  double m_SuperiorCorner{ 0. };

  bool m_Disable{ false };

}; // end of class

} // end namespace rtk

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

#endif