itkComposeRGBImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkComposeRGBImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2003/02/23 05:59:52 $
  Version:   $Revision: 1.2 $

  Copyright (c) 2002 Insight 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 __itkComposeRGBImageFilter_h
#define __itkComposeRGBImageFilter_h

#include "itkTernaryFunctorImageFilter.h"
#include "itkRGBPixel.h"

namespace itk
{
  
namespace Function {  
  
  template< class TInput >
  class ComposeRGB
  {
  public:
    typedef RGBPixel<TInput> OutputType;
    ComposeRGB() {}
    ~ComposeRGB() {}
    inline OutputType operator()(  const TInput & R, 
                                   const TInput & G,
                                   const TInput & B)
      {
        OutputType rgbPixel;
        rgbPixel.Set( R, G, B);
        return rgbPixel;
      }
    bool operator != (const ComposeRGB&) const
      {
      return false;
      }
  }; 
}

template <typename TInputImage, 
          typename TOutputImage= 
                     Image< RGBPixel< ITK_TYPENAME TInputImage::PixelType >,
                            ::itk::GetImageDimension<TInputImage>::ImageDimension > >
class ITK_EXPORT ComposeRGBImageFilter :
    public
    TernaryFunctorImageFilter<TInputImage,TInputImage,
                      TInputImage,TOutputImage, 
            Function::ComposeRGB< ITK_TYPENAME TInputImage::PixelType >   >
{
public:
  typedef ComposeRGBImageFilter  Self;
  typedef TernaryFunctorImageFilter<TInputImage,TInputImage,
                      TInputImage,TOutputImage, 
                      Function::ComposeRGB< 
                      ITK_TYPENAME TInputImage::PixelType > 
                        >  Superclass;
  typedef SmartPointer<Self>   Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  typedef typename Superclass::OutputImageType OutputImageType;
  
  itkNewMacro(Self);
  
protected:
  ComposeRGBImageFilter() {}
  virtual ~ComposeRGBImageFilter() {}

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


};

} // end namespace itk


#endif

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