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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkFlipImageFilter.h,v $
Language: C++
Date: $Date: 2005-04-22 20:43:58 $
Version: $Revision: 1.7 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef _itkFlipImageFilter_h
#define _itkFlipImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkFixedArray.h"
namespace itk
{
/** \class FlipImageFilter
* \brief Flips an image across user specified axes.
*
* FlipImageFilter flips an image across user specified axes.
* The flip axes are set via method SetFlipAxes( array ) where
* the input is a FixedArray<bool,ImageDimension>. The image
* is flipped across axes for which array[i] is true.
*
* In terms of grid coordinates the image is flipped within
* the LargestPossibleRegion of the input image. As such,
* the LargestPossibleRegion of the ouput image is the same
* as the input.
*
* In terms of geometric coordinates, the output origin
* is such that the image is flipped with respect to the
* coordinate axes.
*
* \ingroup GeometricTransforms
* \ingroup Multithreaded
* \ingroup Streamed
*/
template <class TImage>
class ITK_EXPORT FlipImageFilter :
public ImageToImageFilter<TImage,TImage>
{
public:
/** Standard class typedefs. */
typedef FlipImageFilter Self;
typedef ImageToImageFilter<TImage,TImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(FlipImageFilter, ImageToImageFilter);
/** ImageDimension enumeration */
itkStaticConstMacro(ImageDimension, unsigned int, TImage::ImageDimension);
/** Inherited types */
typedef typename Superclass::InputImagePointer InputImagePointer;
typedef typename Superclass::InputImageConstPointer InputImageConstPointer;
typedef typename Superclass::OutputImagePointer OutputImagePointer;
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
/** Index related types */
typedef typename TImage::IndexType IndexType;
typedef typename IndexType::IndexValueType IndexValueType;
/** FlipAxesArray type */
typedef FixedArray<bool,itkGetStaticConstMacro(ImageDimension)> FlipAxesArrayType;
/** Set/Get the axis to be flipped. The image is flipped along axes
* for which array[i] is true. */
itkSetMacro( FlipAxes, FlipAxesArrayType );
itkGetMacro( FlipAxes, FlipAxesArrayType );
/** Controls how the output origin is computed. If FlipAboutOrigin is
* "on", the flip will occur about the origin of the axis, otherwise,
* the flip will occur about the center of the axis.
*/
itkBooleanMacro(FlipAboutOrigin);
itkGetMacro(FlipAboutOrigin, bool);
itkSetMacro(FlipAboutOrigin, bool);
/** FlipImageFilter produces an image with different origin and
* direction than the input image. As such, FlipImageFilter needs to
* provide an implementation for GenerateOutputInformation() in
* order to inform the pipeline execution model. The original
* documentation of this method is below.
* \sa ProcessObject::GenerateOutputInformaton() */
virtual void GenerateOutputInformation();
/** FlipImageFilter needs different input requested region than the output
* requested region. As such, FlipImageFilter needs to provide an
* implementation for GenerateInputRequestedRegion() in order to inform the
* pipeline execution model.
* \sa ProcessObject::GenerateInputRequestedRegion() */
virtual void GenerateInputRequestedRegion();
protected:
FlipImageFilter();
~FlipImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** FlipImageFilter can be implemented as a multithreaded filter.
* Therefore, this implementation provides a ThreadedGenerateData() routine
* which is called for each processing thread. The output image data is
* allocated automatically by the superclass prior to calling
* ThreadedGenerateData(). ThreadedGenerateData can only write to the
* portion of the output image specified by the parameter
* "outputRegionForThread"
*
* \sa ImageToImageFilter::ThreadedGenerateData(),
* ImageToImageFilter::GenerateData() */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId );
private:
FlipImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
FlipAxesArrayType m_FlipAxes;
bool m_FlipAboutOrigin;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFlipImageFilter.txx"
#endif
#endif
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