itkSharedMorphologyUtilities.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSharedMorphologyUtilities.h,v $
  Language:  C++
  Date:      $Date: 2008-10-20 16:32:08 $
  Version:   $Revision: 1.4 $

  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 __itkSharedMorphologyUtilities_h
#define __itkSharedMorphologyUtilities_h

#include <list>


namespace itk {
#if defined(_MSC_VER) && _MSC_VER >= 1300
template <class TRegion, class TLine>
bool NeedToDoFace(const TRegion AllImage,
                  const TRegion face,
                  const TLine line);

template <class TImage, class TBres, class TLine>
int ComputeStartEnd(const typename TImage::IndexType StartIndex,
                    const TLine line,
                    const float tol,
                    const typename TBres::OffsetArray LineOffsets,
                    const typename TImage::RegionType AllImage, 
                    unsigned &start,
                    unsigned &end);

template <class TImage, class TBres, class TLine>
int FillLineBuffer(typename TImage::ConstPointer input,
                   const typename TImage::IndexType StartIndex,
                   const TLine line,
                   const float tol,
                   const typename TBres::OffsetArray LineOffsets,
                   const typename TImage::RegionType AllImage, 
                   typename TImage::PixelType * inbuffer,
                   unsigned int &start,
                   unsigned int &end);

template <class TImage, class TBres>
void CopyLineToImage(const typename TImage::Pointer output,
                     const typename TImage::IndexType StartIndex,
                     const typename TBres::OffsetArray LineOffsets,
                     const typename TImage::PixelType * outbuffer,
                     const unsigned start,
                     const unsigned end);

// This returns a face with a normal between +/- 45 degrees of the
// line. The face is enlarged so that AllImage is entirely filled by
// lines starting from every pixel in the face. This means that some
// of the region will not touch the image. This approach is necessary
// because we want to be able to sweep the lines in a fashion that
// does not have overlap between them.
template <class TInputImage, class TLine>
typename TInputImage::RegionType
MakeEnlargedFace(const TInputImage * input,
               const typename TInputImage::RegionType AllImage,
               const TLine line);

// figure out the correction factor for length->pixel count based on
// line angle
template <class TLine>
unsigned int GetLinePixels(const TLine line);
#endif
} // namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSharedMorphologyUtilities.txx"
#endif

#endif