projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | <HTML> |
| 2 | <!-- | |
| 3 | Copyright (c) 2005, 2010 Trustees of Indiana University | |
| 4 | ||
| 5 | Distributed under the Boost Software License, Version 1.0. | |
| 6 | (See accompanying file LICENSE_1_0.txt or copy at | |
| 7 | http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | --> | |
| 9 | <Head> | |
| 10 | <Title>Boost Graph Library: Random Graph Layout</Title> | |
| 11 | <BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" | |
| 12 | ALINK="#ff0000"> | |
| 13 | <IMG SRC="../../../boost.png" | |
| 14 | ALT="C++ Boost" width="277" height="86"> | |
| 15 | ||
| 16 | <BR Clear> | |
| 17 | ||
| 18 | <TT>random_graph_layout</TT> | |
| 19 | </H1> | |
| 20 | ||
| 21 | ||
| 22 | <P> | |
| 23 | <PRE> | |
| 24 | <i>// non-named parameter version</i> | |
| 25 | template<typename Graph, typename PositionMap, typename Topology> | |
| 26 | void | |
| 27 | random_graph_layout(const Graph& g, PositionMap position_map, | |
| 28 | const Topology& space); | |
| 29 | </PRE> | |
| 30 | ||
| 31 | <P> This algorithm places the points of the graph at random | |
| 32 | locations within a given space. </p> | |
| 33 | ||
| 34 | <h3>Where Defined</h3> | |
| 35 | ||
| 36 | <a href="../../../boost/graph/random_layout.hpp"><tt>boost/graph/random_layout.hpp</tt></a> | |
| 37 | ||
| 38 | <h3>Parameters</h3> | |
| 39 | ||
| 40 | IN: <tt>const Graph& g</tt> | |
| 41 | <blockquote> | |
| 42 | The graph object on which the algorithm will be applied. | |
| 43 | The type <tt>Graph</tt> must be a model of | |
| 44 | <a href="./VertexAndEdgeListGraph.html">Vertex And Edge List Graph</a>. | |
| 45 | </blockquote> | |
| 46 | ||
| 47 | IN/OUT: <tt>PositionMap position</tt> | |
| 48 | <blockquote> | |
| 49 | The property map that stores the position of each vertex. The type | |
| 50 | <tt>PositionMap</tt> must be a model of <a | |
| 51 | href="../../property_map/doc/LvaluePropertyMap.html">Lvalue Property | |
| 52 | Map</a> such that the vertex descriptor type of <tt>Graph</tt> is | |
| 53 | convertible to its key type. Its value type must be | |
| 54 | <tt>Topology::point_type</tt>, representing the coordinates of the vertex. | |
| 55 | </blockquote> | |
| 56 | ||
| 57 | IN: <tt>const Topology& space</tt> | |
| 58 | <blockquote> | |
| 59 | The topology used to lay out the vertices. This parameter describes both the | |
| 60 | size and shape of the layout area and provides a random number generator used | |
| 61 | to create random positions within the space. Topologies are described in | |
| 62 | more detail (with a list of BGL-provided topologies) <a | |
| 63 | href="topology.html">in separate documentation</a>. | |
| 64 | </blockquote> | |
| 65 | ||
| 66 | <H3>Complexity</H3> | |
| 67 | <P> The time complexity is <i>O(|V|)</i>. | |
| 68 | ||
| 69 | <br> | |
| 70 | <HR> | |
| 71 | <TABLE> | |
| 72 | <TR valign=top> | |
| 73 | <TD nowrap>Copyright © 2004, 2010</TD><TD> | |
| 74 | <A HREF="http://www.boost.org/people/doug_gregor.html">Doug Gregor</A>, Indiana University | |
| 75 | </TD></TR></TABLE> | |
| 76 | ||
| 77 | </BODY> | |
| 78 | </HTML> |