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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkVector.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:49 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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DEF |
#ifndef _itkVector_txx |
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DEF |
#define _itkVector_txx |
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#include "itkVector.h" |
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#include "itkNumericTraits.h" |
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#include <vnl/vnl_math.h> |
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#include "vnl/vnl_vector.h" |
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#include "itkObject.h" |
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#include "itkNumericTraitsVectorPixel.h" |
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namespace itk |
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{ |
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/** |
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* Constructor to initialize entire vector to one value. |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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::Vector(const ValueType& r) |
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{ |
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for(typename BaseArray::Iterator i = BaseArray::Begin(); i != BaseArray::End(); ++i) |
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{ |
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*i = r; |
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} |
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} |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension>& |
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Vector<T, TVectorDimension> |
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::operator= (const ValueType r[TVectorDimension]) |
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{ |
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BaseArray::operator=(r); |
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return *this; |
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} |
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/** |
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* |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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const Vector<T, TVectorDimension> & |
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Vector<T, TVectorDimension> |
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::operator*=( const ValueType & value ) |
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{ |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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(*this)[i] *= value; |
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} |
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return *this; |
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} |
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/** |
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* |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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const Vector<T, TVectorDimension> & |
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Vector<T, TVectorDimension> |
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::operator/=( const ValueType & value ) |
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{ |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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(*this)[i] /= value; |
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} |
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return *this; |
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} |
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/** |
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* |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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const typename Vector<T, TVectorDimension>::Self & |
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Vector<T, TVectorDimension> |
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::operator+=( const Self & vec ) |
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{ |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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(*this)[i] += vec[i]; |
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} |
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return *this; |
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} |
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/** |
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* |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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const typename Vector<T, TVectorDimension>::Self & |
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Vector<T, TVectorDimension> |
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::operator-=( const Self & vec ) |
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{ |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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(*this)[i] -= vec[i]; |
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} |
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return *this; |
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} |
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/** |
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* Returns a temporary copy of a vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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Vector<T, TVectorDimension> |
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::operator-() const |
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{ |
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Self result; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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result[i] = -(*this)[i]; |
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} |
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return result; |
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} |
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EML |
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/** |
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* Returns a temporary copy of a vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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Vector<T, TVectorDimension> |
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::operator+( const Self & vec ) const |
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{ |
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Self result; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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result[i] = (*this)[i] + vec[i]; |
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} |
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return result; |
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} |
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EML |
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/** |
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* Returns a temporary copy of a vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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Vector<T, TVectorDimension> |
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::operator-( const Self & vec ) const |
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{ |
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Self result; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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result[i] = (*this)[i] - vec[i]; |
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} |
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return result; |
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} |
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EML |
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/** |
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* Multiply components by a constant |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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Vector<T, TVectorDimension> |
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::operator*( const ValueType & value ) const |
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{ |
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Self result; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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result[i] = (*this)[i] * value; |
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} |
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return result; |
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} |
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/** |
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* Returns vector's Squared Euclidean Norm |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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typename Vector<T, TVectorDimension>::RealValueType |
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Vector<T, TVectorDimension> |
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::GetSquaredNorm( void ) const |
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{ |
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typename NumericTraits<RealValueType>::AccumulateType sum = NumericTraits<T>::Zero; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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const RealValueType value = (*this)[i]; |
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sum += value * value; |
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} |
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return sum; |
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} |
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EML |
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/** |
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* Returns vector's Euclidean Norm |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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typename Vector<T, TVectorDimension>::RealValueType |
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Vector<T, TVectorDimension> |
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::GetNorm( void ) const |
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{ |
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return RealValueType( sqrt( double(this->GetSquaredNorm()) )); |
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} |
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/** |
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* Divide vector's components by vector's norm |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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void |
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Vector<T, TVectorDimension> |
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::Normalize( void ) |
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{ |
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const RealValueType norm = this->GetNorm(); |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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(*this)[i] /= norm; |
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} |
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} |
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EML |
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EML |
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/** |
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* Returns a temporary copy of a vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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Vector<T, TVectorDimension> |
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Vector<T, TVectorDimension> |
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::operator/( const ValueType & value ) const |
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{ |
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Self result; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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result[i] = (*this)[i] / value; |
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} |
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return result; |
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} |
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/** |
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* Set a vnl_vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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void |
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Vector<T, TVectorDimension> |
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::Set_vnl_vector( const vnl_vector<T> & v) |
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{ |
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for(unsigned int i=0;i<v.size();i++) |
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{ |
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(*this)[i] = v(i); |
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} |
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} |
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/** |
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* Return a vnl_vector_ref |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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vnl_vector_ref< T > |
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Vector<T, TVectorDimension> |
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::Get_vnl_vector( void ) |
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{ |
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return vnl_vector_ref< T >( TVectorDimension, this->GetDataPointer() ); |
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} |
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/** |
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* Return a vnl_vector const |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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vnl_vector< T > |
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Vector<T, TVectorDimension> |
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::Get_vnl_vector( void ) const |
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{ |
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// Return a vector_ref<>. This will be automatically converted to a |
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// vnl_vector<>. We have to use a const_cast<> which would normally |
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// be prohibited in a const method, but it is safe to do here |
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// because the cast to vnl_vector<> will ultimately copy the data. |
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return vnl_vector_ref<T>( TVectorDimension, |
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const_cast<T*>(this->GetDataPointer())); |
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} |
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/** |
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* Set a vnl_vector |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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void |
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Vector<T, TVectorDimension> |
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::SetVnlVector( const vnl_vector<T> & v) |
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{ |
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for(unsigned int i=0;i<v.size();i++) |
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{ |
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(*this)[i] = v(i); |
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} |
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} |
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/** |
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* Return a vnl_vector_ref |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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vnl_vector_ref< T > |
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Vector<T, TVectorDimension> |
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::GetVnlVector( void ) |
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{ |
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return vnl_vector_ref< T >( TVectorDimension, this->GetDataPointer() ); |
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} |
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/** |
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* Return a vnl_vector const |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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vnl_vector< T > |
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Vector<T, TVectorDimension> |
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::GetVnlVector( void ) const |
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{ |
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// Return a vector_ref<>. This will be automatically converted to a |
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// vnl_vector<>. We have to use a const_cast<> which would normally |
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// be prohibited in a const method, but it is safe to do here |
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// because the cast to vnl_vector<> will ultimately copy the data. |
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return vnl_vector_ref<T>( TVectorDimension, |
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const_cast<T*>(this->GetDataPointer())); |
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} |
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/** |
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* Print content to an ostream |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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std::ostream & |
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operator<<(std::ostream& os,const Vector<T,TVectorDimension> & vct ) |
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{ |
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os << "["; |
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if ( TVectorDimension == 1) |
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{ |
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os << vct[0]; |
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} |
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else |
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{ |
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for( unsigned int i=0; i+1<TVectorDimension; i++) |
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{ |
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os << vct[i] << ", "; |
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} |
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os << vct[TVectorDimension-1]; |
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} |
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os << "]"; |
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return os; |
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} |
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/** |
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* Read content from an istream |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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std::istream & |
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operator>>(std::istream& is, Vector<T,TVectorDimension> & vct ) |
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{ |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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is >> vct[i]; |
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} |
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return is; |
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} |
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/** |
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* |
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*/ |
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template<class T, unsigned int TVectorDimension> |
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typename Vector<T, TVectorDimension>::ValueType |
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Vector<T, TVectorDimension> |
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::operator*( const Self & other ) const |
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{ |
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typename NumericTraits<T>::AccumulateType value = NumericTraits<T>::Zero; |
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for( unsigned int i=0; i<TVectorDimension; i++) |
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{ |
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value += (*this)[i] * other[i]; |
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} |
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return value; |
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} |
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EML |
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EML |
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} // end namespace itk |
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#endif |
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