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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkGeometryUtilities_h
#define itkGeometryUtilities_h
#include "itkObject.h"
#include "ITKLabelMapExport.h"
namespace itk
{
/**
* \class GeometryUtilities
* \brief Groups some utility functions related to geometry
*
* This implementation was taken from the Insight Journal paper:
* https://www.insight-journal.org/browse/publication/176
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* \ingroup ITKLabelMap
*/
class ITKLabelMap_EXPORT GeometryUtilities
{
public:
static long
Factorial(const long n);
static long
DoubleFactorial(const long n);
static double
GammaN2p1(const long n);
static double
HyperSphereVolume(const int dim, const double radius);
static double
HyperSpherePerimeter(const int dim, const double radius);
static double
HyperSphereRadiusFromVolume(const int dim, const double volume);
};
} // namespace itk
#endif
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