itkVectorExpandImageFilter.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 itkVectorExpandImageFilter_h
#define itkVectorExpandImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkVectorLinearInterpolateImageFunction.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT VectorExpandImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(VectorExpandImageFilter);

  using Self = VectorExpandImageFilter;
  using Superclass = ImageToImageFilter< TInputImage, TOutputImage >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  using InputImagePointer = typename TInputImage::Pointer;
  using OutputImagePointer = typename TOutputImage::Pointer;
  using OutputImageRegionType = typename TOutputImage::RegionType;

  itkTypeMacro(VectorExpandImageFilter, ImageToImageFilter);

  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;

  using InputImageType = typename Superclass::InputImageType;
  using OutputImageType = typename Superclass::OutputImageType;

  using OutputPixelType = typename OutputImageType::PixelType;
  using OutputValueType = typename OutputPixelType::ValueType;
  using InputPixelType = typename InputImageType::PixelType;
  using InputValueType = typename InputPixelType::ValueType;

  enum { VectorDimension = InputPixelType::Dimension };

  using ExpandFactorsType = float;
  using ExpandFactorsArrayType = FixedArray< ExpandFactorsType, ImageDimension >;

  using CoordRepType = double;
  using InterpolatorType = VectorInterpolateImageFunction< InputImageType, CoordRepType >;
  using InterpolatorPointer = typename InterpolatorType::Pointer;
  using DefaultInterpolatorType = VectorLinearInterpolateImageFunction< InputImageType, CoordRepType >;

  itkSetObjectMacro(Interpolator, InterpolatorType);
  itkGetModifiableObjectMacro(Interpolator, InterpolatorType);

  itkSetMacro(ExpandFactors, ExpandFactorsArrayType);
  virtual void SetExpandFactors(const float factor);
  itkSetVectorMacro(ExpandFactors, const unsigned int, ImageDimension);

  itkGetConstReferenceMacro(ExpandFactors, ExpandFactorsArrayType);

  void GenerateOutputInformation() override;

  void GenerateInputRequestedRegion() override;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( InputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< InputValueType > ) );
  itkConceptMacro( OutputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< OutputValueType > ) );
  // End concept checking
#endif

protected:

  VectorExpandImageFilter();
  ~VectorExpandImageFilter() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;


  void BeforeThreadedGenerateData() override;

private:
  ExpandFactorsArrayType   m_ExpandFactors;
  InterpolatorPointer      m_Interpolator;
};
} // end namespace itk

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

#endif