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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSpatialFunctionImageEvaluatorFilter.h,v $
Language: C++
Date: $Date: 2003-09-10 14:28:57 $
Version: $Revision: 1.20 $
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 __itkSpatialFunctionImageEvaluatorFilter_h
#define __itkSpatialFunctionImageEvaluatorFilter_h
#include "itkImageFunction.h"
#include "itkImageRegionIterator.h"
#include "itkImageToImageFilter.h"
#include "itkSize.h"
#include "itkSpatialFunction.h"
namespace itk
{
/** \class SpatialFunctionImageEvaluatorFilter
* \brief Evaluates a SpatialFunction onto a source image
*
* SpatialFunctionImageEvaluatorFilter walks an input image and evaluates
* the function at every pixel location. The output of the spatial function
* and the pixel type of the output image must be compatible.
*
* Like its parent ImageToImageFilter, this class functions in the filtering
* pipeline and produces a unique output image.
*
* \ingroup ImageFilters
*/
template<class TSpatialFunction, class TInputImage, class TOutputImage>
class ITK_EXPORT SpatialFunctionImageEvaluatorFilter :
public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard class typedefs. */
typedef SpatialFunctionImageEvaluatorFilter Self;
typedef ImageToImageFilter<TInputImage,TOutputImage> 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( SpatialFunctionImageEvaluatorFilter, ImageToImageFilter );
/** Number of dimensions. */
itkStaticConstMacro(NDimensions, unsigned int,
TInputImage::ImageDimension);
/** Image size typedef. */
typedef typename TInputImage::SizeType SizeType;
/** Image index typedef. */
typedef typename TOutputImage::IndexType IndexType;
/** Image pixel value typedef. */
typedef typename TOutputImage::PixelType PixelType;
/** Typedef to describe the output image region type. */
typedef typename TOutputImage::RegionType OutputImageRegionType;
/** Type of function. */
typedef TSpatialFunction FunctionType;
/** Return type of function. */
typedef typename FunctionType::OutputType FunctionValueType;
/** Typedef describing vector info. */
typedef typename FunctionType::InputType PositionType;
/** Set the internal spatial function. */
void SetFunction( FunctionType* PixelFunction )
{m_PixelFunction = PixelFunction;};
protected:
SpatialFunctionImageEvaluatorFilter();
virtual ~SpatialFunctionImageEvaluatorFilter() {};
/** Method for evaluating the implicit function over the image. */
void GenerateData();
private:
SpatialFunctionImageEvaluatorFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
/** The function that will be evaluated over the image */
FunctionType* m_PixelFunction;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSpatialFunctionImageEvaluatorFilter.txx"
#endif
#endif
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