itkDerivativeOperator.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkDerivativeOperator_h
#define __itkDerivativeOperator_h

#include "itkNeighborhoodOperator.h"

namespace itk
{
template< class TPixel, unsigned int VDimension = 2,
          class TAllocator = NeighborhoodAllocator< TPixel > >
class ITK_EXPORT DerivativeOperator:
  public NeighborhoodOperator< TPixel, VDimension, TAllocator >
{
public:

  typedef DerivativeOperator Self;
  typedef NeighborhoodOperator<
    TPixel, VDimension, TAllocator >           Superclass;

  typedef typename Superclass::PixelType     PixelType;
  typedef typename Superclass::PixelRealType PixelRealType;

  DerivativeOperator():m_Order(1) {}

  DerivativeOperator(const Self & other):
    NeighborhoodOperator< TPixel, VDimension, TAllocator >(other)
  { m_Order = other.m_Order;  }

  Self & operator=(const Self & other)
  {
    if(this != &other)
      {
      Superclass::operator=(other);
      m_Order = other.m_Order;
      }
    return *this;
  }

  void SetOrder(const unsigned int & order)
  {
    this->m_Order = order;
  }

  unsigned int GetOrder() const { return m_Order; }

  virtual void PrintSelf(std::ostream & os, Indent i) const
  {
    os << i << "DerivativeOperator { this=" << this
       << ", m_Order = " << m_Order << "}" << std::endl;
    Superclass::PrintSelf( os, i.GetNextIndent() );
  }

protected:
  typedef typename Superclass::CoefficientVector CoefficientVector;

  CoefficientVector GenerateCoefficients();

  void Fill(const CoefficientVector & coeff)
  {   Superclass::FillCenteredDirectional(coeff);  }

private:
  unsigned int m_Order;
};
} // namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDerivativeOperator.hxx"
#endif

#endif