itkCollidingFrontsImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkCollidingFrontsImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-05-12 17:26:20 $
  Version:   $Revision: 1.6 $

  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 __itkCollidingFrontsImageFilter_h
#define __itkCollidingFrontsImageFilter_h

#include "itkFastMarchingUpwindGradientImageFilter.h"
#include "itkImageToImageFilter.h"
#include "itkImage.h"

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

  itkNewMacro(Self);

  itkTypeMacro(CollidingFrontsImageFilter, ImageToImageFilter);

  typedef typename TOutputImage::PixelType                 OutputPixelType;
  typedef typename TInputImage::PixelType                  InputPixelType;
  typedef typename NumericTraits<InputPixelType>::RealType RealType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TOutputImage::ImageDimension);

  typedef TInputImage                       InputImageType;
  typedef typename InputImageType::Pointer  InputImagePointer;
  typedef TOutputImage                      OutputImageType;
  typedef typename OutputImageType::Pointer OutputImagePointer;

  typedef typename Superclass::OutputImageRegionType OutputImageRegionType;

  typedef itk::FastMarchingUpwindGradientImageFilter<TInputImage,TOutputImage> FastMarchingUpwindGradientImageFilterType;

  typedef typename FastMarchingUpwindGradientImageFilterType::PixelType
                                                   PixelType;
  typedef typename FastMarchingUpwindGradientImageFilterType::NodeType
                                                   NodeType;
  typedef typename FastMarchingUpwindGradientImageFilterType::NodeContainer
                                                   NodeContainer;
  typedef typename FastMarchingUpwindGradientImageFilterType::NodeContainerPointer
                                                   NodeContainerPointer;
  typedef typename FastMarchingUpwindGradientImageFilterType::GradientImageType
                                                   GradientImageType;
  typedef typename FastMarchingUpwindGradientImageFilterType::IndexType  IndexType;

  void SetSeedPoints1( NodeContainer * points )
    {
    m_SeedPoints1 = points;
    this->Modified();
    }

  NodeContainerPointer GetSeedPoints1( )
    { return m_SeedPoints1; }

  void SetSeedPoints2( NodeContainer * points )
    {
    m_SeedPoints2 = points;
    this->Modified();
    }

  NodeContainerPointer GetSeedPoints2( )
    { return m_SeedPoints2; }

  itkSetMacro(NegativeEpsilon, double);
  itkGetConstMacro(NegativeEpsilon, double);

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

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

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(InputHasNumericTraitsCheck,
                  (Concept::HasNumericTraits<InputPixelType>));

#endif

protected:
  CollidingFrontsImageFilter();
  virtual ~CollidingFrontsImageFilter() {}

  void GenerateData();

  void PrintSelf(std::ostream&, Indent) const;
  
private:
  CollidingFrontsImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  NodeContainerPointer m_SeedPoints1;
  NodeContainerPointer m_SeedPoints2;

  bool m_StopOnTargets;
  bool m_ApplyConnectivity;

  double m_NegativeEpsilon;
};
  
} // end namespace itk

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

#endif