itkGridImageSource.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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 itkGridImageSource_h
#define itkGridImageSource_h
 
#include "itkGenerateImageSource.h"
#include "itkFixedArray.h"
#include "itkKernelFunctionBase.h"
#include "itkVectorContainer.h"
 
#include "vnl/vnl_vector.h"
 
namespace itk
{
template <typename TOutputImage>
class ITK_TEMPLATE_EXPORT GridImageSource : public GenerateImageSource<TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(GridImageSource);

  using Self = GridImageSource;
  using Superclass = GenerateImageSource<TOutputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkOverrideGetNameOfClassMacro(GridImageSource);

  itkNewMacro(Self);
 
  using RealType = double;

  static constexpr unsigned int ImageDimension = TOutputImage::ImageDimension;

  using ImageType = TOutputImage;
  using ImageRegionType = typename TOutputImage::RegionType;
  using PixelType = typename TOutputImage::PixelType;
  using SpacingType = typename TOutputImage::SpacingType;
  using OriginType = typename TOutputImage::PointType;
  using DirectionType = typename TOutputImage::DirectionType;
  using SizeType = typename TOutputImage::SizeType;
 
  using KernelFunctionType = KernelFunctionBase<double>;
  using ArrayType = FixedArray<RealType, Self::ImageDimension>;
  using BoolArrayType = FixedArray<bool, Self::ImageDimension>;
  using PixelArrayType = vnl_vector<RealType>;
  using PixelArrayContainerType = VectorContainer<PixelArrayType>;

  itkSetObjectMacro(KernelFunction, KernelFunctionType);
  itkGetConstReferenceObjectMacro(KernelFunction, KernelFunctionType);

  itkSetMacro(Sigma, ArrayType);
  itkGetConstReferenceMacro(Sigma, ArrayType);

  itkSetMacro(GridSpacing, ArrayType);
  itkGetConstReferenceMacro(GridSpacing, ArrayType);

  itkSetMacro(GridOffset, ArrayType);
  itkGetConstReferenceMacro(GridOffset, ArrayType);

  itkSetMacro(WhichDimensions, BoolArrayType);
  itkGetConstReferenceMacro(WhichDimensions, BoolArrayType);

  itkSetMacro(Scale, RealType);
  itkGetConstReferenceMacro(Scale, RealType);
 
protected:
  GridImageSource();
  ~GridImageSource() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  void
  DynamicThreadedGenerateData(const ImageRegionType & outputRegionForThread) override;
 
 
  void
  BeforeThreadedGenerateData() override;
 
private:
  typename PixelArrayContainerType::Pointer m_PixelArrays{};
 
  typename KernelFunctionType::Pointer m_KernelFunction{};
 
  ArrayType m_Sigma{};
 
  ArrayType m_GridSpacing{};
 
  ArrayType m_GridOffset{};
 
  BoolArrayType m_WhichDimensions{};
 
  RealType m_Scale{ 255.0 };
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkGridImageSource.hxx"
#endif
 
#endif