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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkScalarVector.h,v $
Language: C++
Date: $Date: 2003-09-10 14:29:25 $
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 __itkScalarVector_h
#define __itkScalarVector_h
#include "itkMacro.h"
#include "vnl/vnl_vector_fixed.h"
#include <memory>
namespace itk
{
/** \class ScalarVector
* \brief A templated class holding bot scalar and vector values and
* responding to the GetScalar() and GetVector() methods.
*
* ScalarVector is a templated class that holds a scalar value plus an
* array of values (a vector). ScalarVector can be used as the data type
* held at each pixel in an Image or at each vertex of an Mesh. There
* are three template parameters: the type of scalar, the type of vector, and
* the number of components of the vector. The types can be any data type
* that behaves like a primitive (or atomic) data type (int, short, float,
* complex). itk filters that rely on scalar data assume the data type held
* at each pixel or each vertex responds to GetScalar()/SetScalar()
* methods. itk filters that rely on vector data assume the data type held at
* each pixel or each vertex responds to GetVector()/SetVector() methods. If
* not, a compile time error will occur.
*
* ScalarVector is not a dynamically extendible array like std::vector. It
* is intended to be used like a mathematical vector.
*
* If you wish a simpler pixel types, you can use Scalar, which represents
* a single data value at a pixel. YOu can also use Vector, which supports
* (for a given pixel) an array of vector values.
*
* \sa Image
* \sa Mesh
* \sa Scalar
* \sa Vector
* \ingroup DataRepresentation
*/
template<class TScalar, class TVector, unsigned int TVectorDimension=3>
class ITK_EXPORT ScalarVector
{
public:
/** Standard class typedefs. */
typedef ScalarVector Self;
/** ValueType can be used to declare a variable that is the same type
* as the data held in the scalar portion of the ScalarVector. */
typedef TScalar ValueType;
/** ValueType can be used to declare a variable that is the same type
* as the data held in the scalar portion of the ScalarVector. */
typedef TScalar ScalarValueType;
/** ValueType can be used to declare a variable that is the same type
* as the data held in the scalar portion of the ScalarVector. */
typedef TVector VectorValueType;
/** VectorType can be used to declare a variable that is the same type
* as the internal vector. */
typedef vnl_vector_fixed<TVector, TVectorDimension> VectorType;
/** Get the scalar value. \sa SetScalar() */
TScalar GetScalar() const
{ return m_Scalar; }
/** Set the scalar value. \sa GetScalar() */
void SetScalar(const TScalar &val)
{ m_Scalar = val; }
/** Get the dimension (size) of the vector. */
static unsigned int GetVectorDimension()
{ return TVectorDimension; }
/** Get the vector. This provides a read only reference to the vector.
* \sa SetVector(). */
const VectorType &GetVector() const
{ return m_Vector; }
/** Get the vector. This provides a read/write reference to the vector.
* \sa SetVector */
VectorType &GetVector()
{ return m_Vector; }
/** Set the vector. \sa GetVector */
void SetVector(const VectorType &vec)
{ m_Vector = vec; }
private:
TScalar m_Scalar;
VectorType m_Vector;
};
} // end namespace itk
#endif
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