itkGaussianSpatialFunction.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 __itkGaussianSpatialFunction_h
#define __itkGaussianSpatialFunction_h

#include "itkSpatialFunction.h"
#include "itkFixedArray.h"

namespace itk
{
template< typename TOutput = double,
          unsigned int VImageDimension = 3,
          typename TInput = Point< double, VImageDimension > >
class GaussianSpatialFunction:
  public SpatialFunction< TOutput, VImageDimension, TInput >
{
public:
  typedef GaussianSpatialFunction                             Self;
  typedef SpatialFunction< TOutput, VImageDimension, TInput > Superclass;
  typedef SmartPointer< Self >                                Pointer;
  typedef SmartPointer< const Self >                          ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(GaussianSpatialFunction, SpatialFunction);

  typedef typename Superclass::InputType InputType;

  typedef typename Superclass::OutputType OutputType;

  typedef FixedArray< double, VImageDimension > ArrayType;

  OutputType Evaluate(const TInput & position) const;

  itkSetMacro(Scale, double);
  itkGetConstMacro(Scale, double);
  itkSetMacro(Normalized, bool);
  itkGetConstMacro(Normalized, bool);
  itkSetMacro(Sigma, ArrayType);
  itkGetConstMacro(Sigma, ArrayType);
  itkSetMacro(Mean, ArrayType);
  itkGetConstMacro(Mean, ArrayType);

protected:
  GaussianSpatialFunction();
  virtual ~GaussianSpatialFunction();
  void PrintSelf(std::ostream & os, Indent indent) const;

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

  ArrayType m_Sigma;

  ArrayType m_Mean;

  double m_Scale;

  bool m_Normalized;
};
} // end namespace itk

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

#endif