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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 itkSphereSignedDistanceFunction_h
#define itkSphereSignedDistanceFunction_h
#include "itkShapeSignedDistanceFunction.h"
#include "itkVector.h"
namespace itk
{
/** \class SphereSignedDistanceFunction
* \brief Compute the signed distance from a N-dimensional sphere.
*
* A instance of sphere is defined by a set parameters. The first parameter
* is the radius and the next SpaceDimension parameters represent the center.
* The first parameter forms the set of ShapeParameters and the remaining
* parameters the set of PoseParameters.
*
* This class is templated over the coordinate representation type
* (e.g. float or double) and the space dimension.
*
* \sa ShapeSignedDistanceFunction
* \ingroup ImageFunctions
*
*
* \ingroup ITKSignedDistanceFunction
*/
template< typename TCoordRep, unsigned int VSpaceDimension >
class ITK_TEMPLATE_EXPORT SphereSignedDistanceFunction:
public ShapeSignedDistanceFunction< TCoordRep, VSpaceDimension >
{
public:
/** Standard class typedefs. */
typedef SphereSignedDistanceFunction Self;
typedef ShapeSignedDistanceFunction< TCoordRep, VSpaceDimension > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(SphereSignedDistanceFunction, ShapeSignedDistancFunction);
/** New macro for creation of through the object factory. */
itkNewMacro(Self);
/** OutputType typedef support. */
typedef typename Superclass::OutputType OutputType;
/** InputeType typedef support. */
typedef typename Superclass::InputType InputType;
/** Dimension underlying input image. */
itkStaticConstMacro(SpaceDimension, unsigned int, Superclass::SpaceDimension);
/** CoordRep typedef support. */
typedef typename Superclass::CoordRepType CoordRepType;
/** Point typedef support. */
typedef typename Superclass::PointType PointType;
/** Type of the shape parameters. */
typedef typename Superclass::ParametersType ParametersType;
/** A sphere is defined by a set of shape parameters. The first parameter
* is the radius and the next SpaceDimension parameters represent the center. */
virtual void SetParameters(const ParametersType &) ITK_OVERRIDE;
virtual unsigned int GetNumberOfShapeParameters(void) const ITK_OVERRIDE
{ return 1; }
virtual unsigned int GetNumberOfPoseParameters(void) const ITK_OVERRIDE
{ return SpaceDimension; }
/** Evaluate the signed distance from a shape at a given position. */
virtual OutputType Evaluate(const PointType & point) const ITK_OVERRIDE;
protected:
SphereSignedDistanceFunction();
~SphereSignedDistanceFunction() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(SphereSignedDistanceFunction);
typedef Vector< CoordRepType, itkGetStaticConstMacro(SpaceDimension) > VectorType;
VectorType m_Translation;
double m_Radius;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSphereSignedDistanceFunction.hxx"
#endif
#endif
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