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109 lines
2.4 KiB
HTML
109 lines
2.4 KiB
HTML
<HTML>
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<!--
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-- Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000
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--
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-- Distributed under the Boost Software License, Version 1.0.
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-- (See accompanying file LICENSE_1_0.txt or copy at
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-- http://www.boost.org/LICENSE_1_0.txt)
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-->
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<Head>
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<Title>Boost Graph Library: ColorValue Concept</Title>
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<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b"
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ALINK="#ff0000">
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<IMG SRC="../../../boost.png"
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ALT="C++ Boost" width="277" height="86">
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<BR Clear>
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<H1><A NAME="concept:ColorValue"></A>
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ColorValue
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</H1>
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<P>
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This concept describes the requirements for the type used for color
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values, as in for coloring a graph during a breath-first search to
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mark which vertices have been visited.
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<P>
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<h3>Refinement of</h3> <a
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href="http://www.sgi.com/tech/stl/EqualityComparable.html">EqualityComparable</a>
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and <a
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href="http://www.sgi.com/tech/stl/DefaultConstructible.html">DefaultConstructible</a>
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<h3>Notation</h3>
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<Table>
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<TR>
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<TD><tt>T</tt></TD>
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<TD>A type that is a model of ColorValue.</TD>
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</TR>
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<TR>
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<TD><tt>cv</tt></TD>
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<TD>An object of type <tt>T</tt>.</TD>
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</TR>
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</table>
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<h3>Valid Expressions</h3>
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<Table border>
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<tr>
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<th>Name</th><th>Expression</th><th>Return Type</th><th>Description</th>
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</tr>
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<tr>
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<td>Get Color White </td>
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<TD><TT>color_traits<T>::white()</TT></TD>
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<TD><TT>T</TT></TD>
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<TD>Returns an object that represents the color white.</TD>
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</TR>
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<tr>
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<td>Get Color Gray </td>
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<TD><TT>color_traits<T>::gray()</TT></TD>
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<TD><TT>T</TT></TD>
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<TD>Returns an object that represents the color gray.</TD>
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</TR>
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<tr>
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<td>Get Color Black </td>
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<TD><TT>color_traits<T>::black()</TT></TD>
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<TD><TT>T</TT></TD>
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<TD>Returns an object that represents the color black.</TD>
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</TR>
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</TABLE>
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<P>
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</LI>
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</UL>
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<h3>Models</h3>
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<ul>
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<li><tt>default_color_type</tt> (in <a href="../../../boost/graph/properties.hpp"><tt>boost/graph/properties.hpp</tt>)
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</ul>
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<br>
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<HR>
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<TABLE>
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<TR valign=top>
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<TD nowrap>Copyright © 2000-2001</TD><TD>
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<A HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</A>,
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Indiana University (<A
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HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br>
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<A HREF="http://www.boost.org/people/liequan_lee.htm">Lie-Quan Lee</A>, Indiana University (<A HREF="mailto:llee@cs.indiana.edu">llee@cs.indiana.edu</A>)<br>
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<A HREF=http://www.osl.iu.edu/~lums>Andrew Lumsdaine</A>,
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Indiana University (<A
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HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>)
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</TD></TR></TABLE>
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</BODY>
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</HTML>
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