itkRayCastInterpolateImageFunction.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 itkRayCastInterpolateImageFunction_h
#define itkRayCastInterpolateImageFunction_h

#include "itkInterpolateImageFunction.h"
#include "itkTransform.h"

namespace itk
{
template< typename TInputImage, typename TCoordRep = double >
class ITK_TEMPLATE_EXPORT RayCastInterpolateImageFunction:
  public InterpolateImageFunction< TInputImage, TCoordRep >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(RayCastInterpolateImageFunction);

  using Self = RayCastInterpolateImageFunction;
  using Superclass = InterpolateImageFunction< TInputImage, TCoordRep >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;

  using TransformType = Transform< TCoordRep, 3, 3 >;

  using TransformPointer = typename TransformType::Pointer;
  using InputPointType = typename TransformType::InputPointType;
  using OutputPointType = typename TransformType::OutputPointType;
  using TransformParametersType = typename TransformType::ParametersType;
  using TransformJacobianType = typename TransformType::JacobianType;

  using PixelType = typename Superclass::InputPixelType;

  using SizeType = typename TInputImage::SizeType;

  using DirectionType = Vector< TCoordRep, 3 >;

  using InterpolatorType = InterpolateImageFunction< TInputImage, TCoordRep >;

  using InterpolatorPointer = typename InterpolatorType::Pointer;

  itkTypeMacro(RayCastInterpolateImageFunction, InterpolateImageFunction);

  itkNewMacro(Self);

  using OutputType = typename Superclass::OutputType;

  using InputImageType = typename Superclass::InputImageType;

  using RealType = typename Superclass::RealType;

  static constexpr unsigned int ImageDimension = Superclass::ImageDimension;

  using PointType = typename Superclass::PointType;

  using IndexType = typename Superclass::IndexType;

  using ContinuousIndexType = typename Superclass::ContinuousIndexType;

  OutputType Evaluate(const PointType & point) const override;

  OutputType EvaluateAtContinuousIndex(
    const ContinuousIndexType & index) const override;

  itkSetObjectMacro(Transform, TransformType);
  itkGetModifiableObjectMacro(Transform, TransformType);

  itkSetObjectMacro(Interpolator, InterpolatorType);

  itkGetModifiableObjectMacro(Interpolator, InterpolatorType);

  itkSetMacro(FocalPoint, InputPointType);
  itkGetConstMacro(FocalPoint, InputPointType);

  itkSetMacro(Threshold, double);
  itkGetConstMacro(Threshold, double);

  bool IsInsideBuffer(const PointType &) const override
  {
    return true;
  }

  bool IsInsideBuffer(const ContinuousIndexType &) const override
  {
    return true;
  }

  bool IsInsideBuffer(const IndexType &) const override
  {
    return true;
  }

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

  void PrintSelf(std::ostream & os, Indent indent) const override;

  TransformPointer    m_Transform;
  InputPointType      m_FocalPoint;
  double              m_Threshold;
  InterpolatorPointer m_Interpolator;
};
} // namespace itk

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

#endif