rtkImportImageFilter.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 rtkImportImageFilter_h
#define rtkImportImageFilter_h

#include "itkImageSource.h"
#include "rtkMacro.h"

namespace rtk
{
template <typename TImage>
class ITK_TEMPLATE_EXPORT ImportImageFilter : public itk::ImageSource<TImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ImportImageFilter);

  using OutputImagePointer = typename TImage::Pointer;
  using SpacingType = typename TImage::SpacingType;
  using OriginType = typename TImage::PointType;

  using Self = ImportImageFilter;
  using Superclass = itk::ImageSource<TImage>;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;

  itkNewMacro(Self);

#ifdef itkOverrideGetNameOfClassMacro
  itkOverrideGetNameOfClassMacro(ImportImageFilter);
#else
  itkTypeMacro(ImportImageFilter, ImageSource);
#endif


  using IndexType = itk::Index<TImage::ImageDimension>;

  using SizeType = itk::Size<TImage::ImageDimension>;
  using SizeValueType = typename SizeType::SizeValueType;

  using RegionType = itk::ImageRegion<TImage::ImageDimension>;

  using PixelType = typename TImage::PixelType;

  PixelType *
  GetImportPointer();

  void
  SetImportPointer(PixelType * ptr, SizeValueType num, bool LetFilterManageMemory);

  void
  SetRegion(const RegionType & region)
  {
    if (m_Region != region)
    {
      m_Region = region;
      this->Modified();
    }
  }

  const RegionType &
  GetRegion() const
  {
    return m_Region;
  }

  itkSetMacro(Spacing, SpacingType);
  itkGetConstReferenceMacro(Spacing, SpacingType);
  itkSetVectorMacro(Spacing, const float, TImage::ImageDimension);

  itkSetMacro(Origin, OriginType);
  itkGetConstReferenceMacro(Origin, OriginType);
  itkSetVectorMacro(Origin, const float, TImage::ImageDimension);

  using DirectionType = itk::Matrix<double, TImage::ImageDimension, TImage::ImageDimension>;

  virtual void
  SetDirection(const DirectionType & direction);

  itkGetConstReferenceMacro(Direction, DirectionType);

protected:
  ImportImageFilter();
  ~ImportImageFilter() override;
  void
  PrintSelf(std::ostream & os, itk::Indent indent) const override;

  void
  GenerateData() override;

  void
  GenerateOutputInformation() override;

  void
  EnlargeOutputRequestedRegion(itk::DataObject * output) override;

private:
  RegionType    m_Region;
  SpacingType   m_Spacing;
  OriginType    m_Origin;
  DirectionType m_Direction;

  PixelType *   m_ImportPointer;
  bool          m_FilterManageMemory;
  SizeValueType m_Size;
};
} // namespace rtk

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

#endif