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.\" ========================================================================
.\"
.IX Title "Graph::Easy::Layout::Force 3pm"
.TH Graph::Easy::Layout::Force 3pm "2016-06-06" "perl v5.22.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Graph::Easy::Layout::Force \- Force\-based layouter for Graph::Easy
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&        use Graph::Easy;
\&
\&        my $graph = Graph::Easy\->new();
\&
\&        $graph\->add_edge (\*(AqBonn\*(Aq, \*(AqBerlin\*(Aq);
\&        $graph\->add_edge (\*(AqBonn\*(Aq, \*(AqUlm\*(Aq);
\&        $graph\->add_edge (\*(AqUlm\*(Aq, \*(AqBerlin\*(Aq);
\&
\&        $graph\->layout( type => \*(Aqforce\*(Aq );
\&
\&        print $graph\->as_ascii( );
\&
\&        # prints:
\&
\&        #   +\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
\&        #   |                        v
\&        # +\-\-\-\-\-\-+     +\-\-\-\-\-+     +\-\-\-\-\-\-\-\-+
\&        # | Bonn | \-\-> | Ulm | \-\-> | Berlin |
\&        # +\-\-\-\-\-\-+     +\-\-\-\-\-+     +\-\-\-\-\-\-\-\-+
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\f(CW\*(C`Graph::Easy::Layout::Force\*(C'\fR contains routines that calculate a
force-based layout for a graph.
.PP
Nodes repell each other, while edges connecting them draw them together.
.PP
The layouter calculates the forces on each node, then moves them around
according to these forces until things have settled down.
.PP
Used automatically by Graph::Easy.
.SH "EXPORT"
.IX Header "EXPORT"
Exports nothing.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Graph::Easy.
.SH "METHODS"
.IX Header "METHODS"
This module injects the following methods into Graph::Easy:
.SS "\fI_layout_force()\fP"
.IX Subsection "_layout_force()"
Calculates the node position with a force-based method.
.SH "AUTHOR"
.IX Header "AUTHOR"
Copyright (C) 2004 \- 2007 by Tels <http://bloodgate.com>.
.PP
See the \s-1LICENSE\s0 file for information.