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- Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000
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- <Head>
- <Title>Boost Graph Library: ColorValue Concept</Title>
- <BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b"
- ALINK="#ff0000">
- <IMG SRC="../../../boost.png"
- ALT="C++ Boost" width="277" height="86">
- <BR Clear>
- <H1><A NAME="concept:ColorValue"></A>
- ColorValue
- </H1>
- <P>
- This concept describes the requirements for the type used for color
- values, as in for coloring a graph during a breath-first search to
- mark which vertices have been visited.
- <P>
- <h3>Refinement of</h3> <a
- href="http://www.boost.org/sgi/stl/EqualityComparable.html">EqualityComparable</a>
- and <a
- href="http://www.boost.org/sgi/stl/DefaultConstructible.html">DefaultConstructible</a>
- <h3>Notation</h3>
- <Table>
- <TR>
- <TD><tt>T</tt></TD>
- <TD>A type that is a model of ColorValue.</TD>
- </TR>
- <TR>
- <TD><tt>cv</tt></TD>
- <TD>An object of type <tt>T</tt>.</TD>
- </TR>
- </table>
- <h3>Valid Expressions</h3>
- <Table border>
- <tr>
- <th>Name</th><th>Expression</th><th>Return Type</th><th>Description</th>
- </tr>
- <tr>
- <td>Get Color White </td>
- <TD><TT>color_traits<T>::white()</TT></TD>
- <TD><TT>T</TT></TD>
- <TD>Returns an object that represents the color white.</TD>
- </TR>
- <tr>
- <td>Get Color Gray </td>
- <TD><TT>color_traits<T>::gray()</TT></TD>
- <TD><TT>T</TT></TD>
- <TD>Returns an object that represents the color gray.</TD>
- </TR>
- <tr>
- <td>Get Color Black </td>
- <TD><TT>color_traits<T>::black()</TT></TD>
- <TD><TT>T</TT></TD>
- <TD>Returns an object that represents the color black.</TD>
- </TR>
- </TABLE>
- <P>
- </LI>
- </UL>
- <h3>Models</h3>
- <ul>
- <li><tt>default_color_type</tt> (in <a href="../../../boost/graph/properties.hpp"><tt>boost/graph/properties.hpp</tt>)
- </ul>
- <br>
- <HR>
- <TABLE>
- <TR valign=top>
- <TD nowrap>Copyright © 2000-2001</TD><TD>
- <A HREF="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</A>,
- Indiana University (<A
- HREF="mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</A>)<br>
- <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>
- <A HREF="https://homes.cs.washington.edu/~al75">Andrew Lumsdaine</A>,
- Indiana University (<A
- HREF="mailto:lums@osl.iu.edu">lums@osl.iu.edu</A>)
- </TD></TR></TABLE>
- </BODY>
- </HTML>
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