Graph::Easy::Layout::Force

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Graph::Easy::Layout::UsereContributed Perl DocumGraph::Easy::Layout::Force(3)



NAME
       Graph::Easy::Layout::Force - Force-based layouter for Graph::Easy

SYNOPSIS
	       use Graph::Easy;

	       my $graph = Graph::Easy->new();

	       $graph->add_edge (’Bonn’, ’Berlin’);
	       $graph->add_edge (’Bonn’, ’Ulm’);
	       $graph->add_edge (’Ulm’, ’Berlin’);

	       $graph->layout( type => ’force’ );

	       print $graph->as_ascii( );

	       # prints:

	       #   +------------------------+
	       #   │			    v
	       # +------+     +-----+	  +--------+
	       # │ Bonn │ --> │ Ulm │ --> │ Berlin │
	       # +------+     +-----+	  +--------+

DESCRIPTION
       "Graph::Easy::Layout::Force" contains routines that calculate a force-
       based layout for a graph.

       Nodes repell each other, while edges connecting them draw them
       together.

       The layouter calculates the forces on each node, then moves them
       around according to these forces until things have settled down.

       Used automatically by Graph::Easy.

EXPORT
       Exports nothing.

SEE ALSO
       Graph::Easy.

METHODS
       This module injects the following methods into Graph::Easy:

       _layout_force()

       Calculates the node position with a force-based method.

AUTHOR
       Copyright (C) 2004 - 2007 by Tels <http://bloodgate.com>.

       See the LICENSE file for information.



perl v5.8.8			  2007-08-18	Graph::Easy::Layout::Force(3)