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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkEllipsoidInteriorExteriorSpatialFunction.h,v $
Language: C++
Date: $Date: 2007-01-30 23:39:52 $
Version: $Revision: 1.17 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkEllipsoidInteriorExteriorSpatialFunction_h
#define __itkEllipsoidInteriorExteriorSpatialFunction_h
#include "itkInteriorExteriorSpatialFunction.h"
#include "vnl/vnl_matrix_fixed.h"
namespace itk
{
/**
* \class EllipsoidSpatialFunction
* \brief Function implementation of an ellipsoid
*
* Implements a function that returns 1 for points inside or on the surface
* of a ellipsoid and 0 for points outside the ellipsoid. The orientation of the
* n-dimensional ellipsoid axes are defined by n orthogonal vectors.
* See Examples/EllipsoidInteriorExteriorSpatialFunction/README for an example
* of creating an Ellipsoid in an image.
*
**/
template <unsigned int VDimension = 3,
typename TInput = Point<double, VDimension> >
class ITK_EXPORT EllipsoidInteriorExteriorSpatialFunction
: public InteriorExteriorSpatialFunction<VDimension, TInput>
{
public:
/** Standard class typedefs. */
typedef EllipsoidInteriorExteriorSpatialFunction Self;
typedef InteriorExteriorSpatialFunction<VDimension, TInput> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(EllipsoidInteriorExteriorSpatialFunction,InteriorExteriorSpatialFunction);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Input type for the function */
typedef typename Superclass::InputType InputType;
/** Output type for the function */
typedef typename Superclass::OutputType OutputType;
/** Typedef for the orientation matrix */
typedef vnl_matrix_fixed<double, VDimension, VDimension> OrientationType;
/** Set/Get and set the center of the ellipsoid. */
itkGetMacro(Center, InputType);
itkSetMacro(Center, InputType);
/** Get and set the axes lengths of the ellipsoid. */
itkGetMacro(Axes, InputType);
itkSetMacro(Axes, InputType);
/** Set the orientation vectors (must be orthogonal) of the ellipsoid axes.
* Must be normalized!!!!! */
void SetOrientations(const OrientationType &);
/** Evaluates the function at a given position. */
OutputType Evaluate(const InputType& position) const;
protected:
EllipsoidInteriorExteriorSpatialFunction();
virtual ~EllipsoidInteriorExteriorSpatialFunction();
void PrintSelf(std::ostream& os, Indent indent) const;
private:
EllipsoidInteriorExteriorSpatialFunction(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
/** The center of the ellipsoid. */
InputType m_Center;
/** The axes lenths of the ellipsoid. */
InputType m_Axes;
/** The orientation vectors (must be orthogonal) of the ellipsoid axes. */
double ** m_Orientations;
};
} // end namespace itk
// Define instantiation macro for this template.
#define ITK_TEMPLATE_EllipsoidInteriorExteriorSpatialFunction(_, EXPORT, x, y) namespace itk { \
_(2(class EXPORT EllipsoidInteriorExteriorSpatialFunction< ITK_TEMPLATE_2 x >)) \
namespace Templates { typedef EllipsoidInteriorExteriorSpatialFunction< ITK_TEMPLATE_2 x > \
EllipsoidInteriorExteriorSpatialFunction##y; } \
}
#if ITK_TEMPLATE_EXPLICIT
# include "Templates/itkEllipsoidInteriorExteriorSpatialFunction+-.h"
#endif
#if ITK_TEMPLATE_TXX
# include "itkEllipsoidInteriorExteriorSpatialFunction.txx"
#endif
#endif
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