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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 itkSpatialFunction_h
#define itkSpatialFunction_h
#include "itkFunctionBase.h"
#include "itkPoint.h"
namespace itk
{
/** \class SpatialFunction
* \brief N-dimensional spatial function class
*
* itk::SpatialFunction provides the ability to define functions that can
* be evaluated at an arbitrary point in space (physical or otherwise). The return
* type is specified by the derived class, and the input to the function
* is an n-dimensional itk::Point.
*
* Although itk::ImageFunction and itk::SpatialFunction are quite similar,
* itk::SpatialFunction derived classes exist without reference to an Image
* type.
*
* SpatialFunction is templated over output type (the data type
* returned by an evaluate() call) and dimensionality.
*
* \ingroup SpatialFunctions
* \ingroup ITKCommon
*/
template< typename TOutput,
unsigned int VImageDimension = 3,
typename TInput = Point< double, VImageDimension > >
class ITK_TEMPLATE_EXPORT SpatialFunction:public FunctionBase< TInput, TOutput >
{
public:
/** Standard class typedefs. */
typedef SpatialFunction Self;
typedef FunctionBase< TInput, TOutput > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(SpatialFunction, FunctionBase);
/** Input type for the function. */
typedef typename Superclass::InputType InputType;
/** Output type for the function. */
typedef typename Superclass::OutputType OutputType;
/** Spatial dimension. */
itkStaticConstMacro(ImageDimension, unsigned int, VImageDimension);
/** Evaluate the function at a given position. Remember, position is
* represented by an n-d itk::Point object with data type double. */
virtual OutputType Evaluate(const InputType & input) const ITK_OVERRIDE = 0;
protected:
SpatialFunction();
virtual ~SpatialFunction() ITK_OVERRIDE;
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(SpatialFunction);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSpatialFunction.hxx"
#endif
#endif
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