itkOrientImageFilter.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 itkOrientImageFilter_h
#define itkOrientImageFilter_h

#include "itkPermuteAxesImageFilter.h"
#include "itkFlipImageFilter.h"
#include "itkSpatialOrientationAdapter.h"
#include <map>
#include <string>

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class OrientImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef OrientImageFilter                               Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  typedef TInputImage                            InputImageType;
  typedef typename InputImageType::Pointer       InputImagePointer;
  typedef typename InputImageType::ConstPointer  InputImageConstPointer;
  typedef typename InputImageType::RegionType    InputImageRegionType;
  typedef typename InputImageType::PixelType     InputImagePixelType;
  typedef TOutputImage                           OutputImageType;
  typedef typename OutputImageType::Pointer      OutputImagePointer;
  typedef typename OutputImageType::ConstPointer OutputImageConstPointer;
  typedef typename OutputImageType::RegionType   OutputImageRegionType;
  typedef typename OutputImageType::PixelType    OutputImagePixelType;
  typedef SpatialOrientation::ValidCoordinateOrientationFlags
  CoordinateOrientationCode;

  typedef PermuteAxesImageFilter< TInputImage >        PermuterType;
  typedef typename PermuterType::PermuteOrderArrayType PermuteOrderArrayType;

  typedef FlipImageFilter< TInputImage >          FlipperType;
  typedef typename FlipperType::FlipAxesArrayType FlipAxesArrayType;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension);

  itkNewMacro(Self);

  itkTypeMacro(OrientImageFilter, ImageToImageFilter);

  itkGetEnumMacro(GivenCoordinateOrientation, CoordinateOrientationCode);
  void SetGivenCoordinateOrientation(CoordinateOrientationCode newCode);

  inline void SetGivenCoordinateDirection(const typename TInputImage::DirectionType & GivenDirection)
  {
    SetGivenCoordinateOrientation(
      itk::SpatialOrientationAdapter().FromDirectionCosines(GivenDirection) );
  }

  itkGetEnumMacro(DesiredCoordinateOrientation, CoordinateOrientationCode);
  void SetDesiredCoordinateOrientation(CoordinateOrientationCode newCode);

  inline void SetDesiredCoordinateDirection(const typename TOutputImage::DirectionType & DesiredDirection)
  {
    SetDesiredCoordinateOrientation(
      itk::SpatialOrientationAdapter().FromDirectionCosines(DesiredDirection) );
  }

  itkBooleanMacro(UseImageDirection);
  itkGetConstMacro(UseImageDirection, bool);
  itkSetMacro(UseImageDirection, bool);

  itkGetConstReferenceMacro(PermuteOrder, PermuteOrderArrayType);

  itkGetConstReferenceMacro(FlipAxes, FlipAxesArrayType);

  void SetDesiredCoordinateOrientationToAxial()
  {
    this->SetDesiredCoordinateOrientation (SpatialOrientation::ITK_COORDINATE_ORIENTATION_RAI);
  }

  void SetDesiredCoordinateOrientationToCoronal()
  {
    this->SetDesiredCoordinateOrientation (SpatialOrientation::ITK_COORDINATE_ORIENTATION_RSA);
  }

  void SetDesiredCoordinateOrientationToSagittal()
  {
    this->SetDesiredCoordinateOrientation (SpatialOrientation::ITK_COORDINATE_ORIENTATION_ASL);
  }

  virtual void GenerateOutputInformation() ITK_OVERRIDE;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( InputConvertibleToOutput,
                   ( Concept::Convertible< InputImagePixelType, OutputImagePixelType > ) );
  itkConceptMacro( SameDimension,
                   ( Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension),
                                             itkGetStaticConstMacro(OutputImageDimension) > ) );
  itkConceptMacro( DimensionShouldBe3,
                   ( Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension), 3 > ) );
  // End concept checking
#endif

protected:
  OrientImageFilter();
  ~OrientImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;

  void GenerateInputRequestedRegion() ITK_OVERRIDE;

  void EnlargeOutputRequestedRegion( DataObject *itkNotUsed(output) ) ITK_OVERRIDE;

/*** Member functions used by GenerateData: */
  void DeterminePermutationsAndFlips(const SpatialOrientation::ValidCoordinateOrientationFlags fixed_orient,
                                     const SpatialOrientation::ValidCoordinateOrientationFlags moving_orient);

  bool NeedToPermute();

  bool NeedToFlip();

  void GenerateData() ITK_OVERRIDE;

private:
  OrientImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);    //purposely not implemented

  std::string GetMajorAxisFromPatientRelativeDirectionCosine(double x, double y, double z);

  CoordinateOrientationCode m_GivenCoordinateOrientation;
  CoordinateOrientationCode m_DesiredCoordinateOrientation;
  bool                      m_UseImageDirection;

  PermuteOrderArrayType m_PermuteOrder;
  FlipAxesArrayType     m_FlipAxes;

  std::map< std::string, CoordinateOrientationCode > m_StringToCode;
  std::map< CoordinateOrientationCode, std::string > m_CodeToString;
}; // end of class
} // end namespace itk

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

#endif