<!-- Copyright 2008 Lubomir Bourdev and Hailin Jin Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> <!-- Copyright 2005-2007 Adobe Systems Incorporated Distributed under the MIT License (see accompanying file LICENSE_1_0_0.txt or a copy at http://stlab.adobe.com/licenses.html) Some files are held under additional license. Please see "http://stlab.adobe.com/licenses.html" for more information. --> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <TITLE>Generic Image Library: color_element_type, color_element_reference_type, color_element_const_reference_type, get_color, contains_color</TITLE> <META HTTP-EQUIV="content-type" CONTENT="text/html;charset=ISO-8859-1"/> <LINK TYPE="text/css" REL="stylesheet" HREF="adobe_source.css"/> </head> <body> <table border="0" cellspacing="0" cellpadding="0" style='width: 100%; margin: 0; padding: 0'><tr> <td width="100%" valign="top" style='padding-left: 10px; padding-right: 10px; padding-bottom: 10px'> <div class="qindex"><a class="qindex" href="index.html">Modules</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="../index.html">GIL Home Page</a> </div> <!-- End Header --> <!-- Generated by Doxygen 1.5.6 --> <div class="contents"> <h1>color_element_type, color_element_reference_type, color_element_const_reference_type, get_color, contains_color<br> <small> [<a class="el" href="g_i_l_0105.html">Algorithms and Utility Functions</a>]</small> </h1><hr><a name="_details"></a><h2>Detailed Description</h2> Support for accessing the elements of a color base by color name. <p> get_color: Named channel accessors<p> Example: A function that takes a generic <a class="el" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a> containing a red channel and sets it to 100%:<p> <div class="fragment"><pre class="fragment"><span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">void</span> set_red_to_max(Pixel& pixel) { boost::function_requires<MutablePixelConcept<Pixel> >(); BOOST_STATIC_ASSERT((contains_color<Pixel, red_t>::value)); <span class="keyword">typedef</span> <span class="keyword">typename</span> color_element_type<Pixel, red_t>::type red_channel_t; <a class="code" href="g_i_l_0106.html#gab1205781ba628ca806c47a51f40f5f6" title="Mutable accessor to the element associated with a given color name.">get_color</a>(pixel, red_t()) = channel_traits<red_channel_t>::max_value(); } </pre></div> <p> <table border="0" cellpadding="0" cellspacing="0"> <tr><td></td></tr> <tr><td colspan="2"><br><h2>Classes</h2></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0447.html">contains_color</a></td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">A predicate metafunction determining whether a given color base contains a given color. <a href="g_i_l_0447.html#_details">More...</a><br></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0444.html">color_element_type</a></td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Specifies the type of the element associated with a given color tag. <a href="g_i_l_0444.html#_details">More...</a><br></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0442.html">color_element_reference_type</a></td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Specifies the return type of the mutable element accessor by color name, get_color(color_base, Color());. <a href="g_i_l_0442.html#_details">More...</a><br></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0440.html">color_element_const_reference_type</a></td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Specifies the return type of the constant element accessor by color name, get_color(color_base, Color());. <a href="g_i_l_0440.html#_details">More...</a><br></td></tr> <tr><td colspan="2"><br><h2>Functions</h2></td></tr> <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="gab1205781ba628ca806c47a51f40f5f6"></a><!-- doxytag: member="ColorBaseAlgorithmColor::get_color" ref="gab1205781ba628ca806c47a51f40f5f6" args="(ColorBase &cb, Color=Color())" --> template<typename ColorBase, typename Color> </td></tr> <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">color_element_reference_type<br> < ColorBase, Color >::type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0106.html#gab1205781ba628ca806c47a51f40f5f6">get_color</a> (ColorBase &cb, Color=Color())</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Mutable accessor to the element associated with a given color name. <br></td></tr> <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="g4b9fe0ec8239047ac50842800de872b9"></a><!-- doxytag: member="ColorBaseAlgorithmColor::get_color" ref="g4b9fe0ec8239047ac50842800de872b9" args="(const ColorBase &cb, Color=Color())" --> template<typename ColorBase, typename Color> </td></tr> <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">color_element_const_reference_type<br> < ColorBase, Color >::type </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0106.html#g4b9fe0ec8239047ac50842800de872b9">get_color</a> (const ColorBase &cb, Color=Color())</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Constant accessor to the element associated with a given color name. <br></td></tr> </table> </div> <hr size="1"><address style="text-align: right;"><small>Generated on Sat May 2 13:50:17 2009 for Generic Image Library by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address> </body> </html>