rtkRayBoxIntersectionImageFilter.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 rtkRayBoxIntersectionImageFilter_h
#define rtkRayBoxIntersectionImageFilter_h

#include "rtkRayConvexIntersectionImageFilter.h"
#include "rtkConfiguration.h"
#include "rtkBoxShape.h"

namespace rtk
{

template <class TInputImage, class TOutputImage>
class ITK_TEMPLATE_EXPORT RayBoxIntersectionImageFilter
  : public RayConvexIntersectionImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(RayBoxIntersectionImageFilter);

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

  using PointType = BoxShape::PointType;
  using VectorType = BoxShape::VectorType;
  using ScalarType = BoxShape::ScalarType;
  using RotationMatrixType = BoxShape::RotationMatrixType;
  using ImageBaseType = BoxShape::ImageBaseType;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(RayBoxIntersectionImageFilter);

  itkGetMacro(Density, ScalarType);
  itkSetMacro(Density, ScalarType);

  itkGetConstReferenceMacro(PlaneDirections, std::vector<VectorType>);
  itkGetConstReferenceMacro(PlanePositions, std::vector<ScalarType>);

  void
  AddClipPlane(const VectorType & dir, const ScalarType & pos);

  void
  SetBoxFromImage(const ImageBaseType * _arg, bool bWithExternalHalfPixelBorder = true);

  itkGetMacro(BoxMin, PointType);
  itkSetMacro(BoxMin, PointType);
  itkGetMacro(BoxMax, PointType);
  itkSetMacro(BoxMax, PointType);
  itkGetMacro(Direction, RotationMatrixType);
  itkSetMacro(Direction, RotationMatrixType);

protected:
  RayBoxIntersectionImageFilter();
  ~RayBoxIntersectionImageFilter() override = default;

  void
  BeforeThreadedGenerateData() override;

private:
  ScalarType              m_Density{ 1. };
  std::vector<VectorType> m_PlaneDirections;
  std::vector<ScalarType> m_PlanePositions;

  PointType          m_BoxMin{ 0. };
  PointType          m_BoxMax{ 0. };
  RotationMatrixType m_Direction;
};

} // end namespace rtk

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

#endif