itkShapeSignedDistanceFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkShapeSignedDistanceFunction.h,v $
  Language:  C++
  Date:      $Date: 2003/09/10 14:29:25 $
  Version:   $Revision: 1.3 $

  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 _itkShapeSignedDistanceFunction_h
#define _itkShapeSignedDistanceFunction_h

#include "itkSpatialFunction.h"
#include "itkArray.h"

namespace itk
{

template <typename TCoordRep, unsigned int VSpaceDimension>
class ITK_EXPORT ShapeSignedDistanceFunction : 
  public SpatialFunction< double, VSpaceDimension, Point<TCoordRep,VSpaceDimension> >
{
public:
  typedef ShapeSignedDistanceFunction Self;
  typedef SpatialFunction< double, VSpaceDimension, 
                                   Point<TCoordRep,VSpaceDimension> > Superclass;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self>  ConstPointer;
  
  itkTypeMacro(ShapeSignedDistanceFunction, SpatialFunction);

  typedef typename Superclass::OutputType OutputType;

  typedef typename Superclass::InputType InputType;
  
  itkStaticConstMacro(SpaceDimension, unsigned int, VSpaceDimension);

  typedef TCoordRep CoordRepType;

  typedef InputType PointType;

  typedef Array<double>      ParametersType;

  virtual void SetParameters( const ParametersType & ) = 0;
  virtual const ParametersType& GetParameters(void) const = 0;
  virtual unsigned int GetNumberOfShapeParameters(void) const = 0;
  virtual unsigned int GetNumberOfPoseParameters(void) const = 0;
  virtual unsigned int GetNumberOfParameters(void) const
    { return this->GetNumberOfShapeParameters() + this->GetNumberOfPoseParameters(); }

  virtual OutputType Evaluate( const PointType& point ) const = 0;

  virtual void Initialize() throw ( ExceptionObject ) {};

protected:

  ShapeSignedDistanceFunction()
    {
    // memory initialization
    m_Parameters = ParametersType(1);
    m_Parameters.Fill( 0.0 );
    };

  ~ShapeSignedDistanceFunction(){};

  void PrintSelf(std::ostream& os, Indent indent) const
    { 
    Superclass::PrintSelf( os, indent );
    os << indent << "Parameters: " << m_Parameters << std::endl;
    }

  ParametersType  m_Parameters;

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

};

} // namespace itk

#endif

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