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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkRGBAPixel.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:46 $ |
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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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#ifndef _itkRGBAPixel_txx |
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#define _itkRGBAPixel_txx |
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#include "itkRGBAPixel.h" |
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#include "itkNumericTraits.h" |
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namespace itk |
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{ |
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/* |
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** Assignment Operator |
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**/ |
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template<class T> |
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RGBAPixel<T>& |
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RGBAPixel<T> |
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::operator= (const Self& r) |
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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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** Assigment from a plain array |
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**/ |
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template<class T> |
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RGBAPixel<T>& |
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RGBAPixel<T> |
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::operator= (const ComponentType r[4]) |
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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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** Compute luminance |
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**/ |
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template<class T> |
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typename RGBAPixel<T>::ComponentType |
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RGBAPixel<T> |
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::GetLuminance() const |
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{ |
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const double luminance = |
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****0.30 * this->GetRed() + |
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****0.59 * this->GetGreen() + |
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****0.11 * this->GetBlue(); |
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return static_cast<ComponentType>( luminance ); |
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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 TComponent> |
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std::ostream & |
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operator<<(std::ostream& os,const RGBAPixel<TComponent> & c ) |
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{ |
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os << c[0] << " "; |
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os << c[1] << " "; |
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os << c[2] << " "; |
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os << c[3] ; |
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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 TComponent> |
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std::istream & |
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operator>>(std::istream& is, RGBAPixel<TComponent> & c ) |
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{ |
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TComponent red; |
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TComponent green; |
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TComponent blue; |
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TComponent alpha; |
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is >> red >> green >> blue; |
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c.SetRed( red ); |
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c.SetGreen( green ); |
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c.SetBlue( blue ); |
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c.SetAlpha( alpha ); |
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return is; |
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} |
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} // end namespace itk |
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#endif |
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