graph::easy::layout::force(3pm) [debian man page]

Graph::Easy::Layout::Force(3pm) 			User Contributed Perl Documentation			   Graph::Easy::Layout::Force(3pm)

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 v5.14.2							    2011-12-23					   Graph::Easy::Layout::Force(3pm)

Graph::Easy::Layout::Grid(3pm)				User Contributed Perl Documentation			    Graph::Easy::Layout::Grid(3pm)

NAME

       Graph::Easy::Layout::Grid - Grid management and size calculation

SYNOPSIS

	       use Graph::Easy;

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

	       my $bonn = Graph::Easy::Node->new(
		       name => 'Bonn',
	       );
	       my $berlin = Graph::Easy::Node->new(
		       name => 'Berlin',
	       );

	       $graph->add_edge ($bonn, $berlin);

	       $graph->layout();

	       print $graph->as_ascii( );

	       # prints:

	       # +------+     +--------+
	       # | Bonn | --> | Berlin |
	       # +------+     +--------+

DESCRIPTION

       "Graph::Easy::Layout::Grid" contains routines that calculate cell sizes on the grid, which is necessary for ASCII, boxart and SVG output.

       Used automatically by Graph::Easy.

EXPORT

       Exports nothing.

SEE ALSO

       Graph::Easy.

METHODS

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

   _prepare_layout()
	       my ($rows,$cols,$max_x,$max_y, @V) = $graph->_prepare_layout();

       Returns two hashes ($rows and $cols), containing the columns and rows of the layout with their nec. sizes (in chars) plus the maximum
       framebuffer size nec. for this layout. Also returns reference of a list of all cells to be rendered.

AUTHOR

       Copyright (C) 2004 - 2006 by Tels <http://bloodgate.com>.

       See the LICENSE file for information.

perl v5.14.2							    2011-12-23					    Graph::Easy::Layout::Grid(3pm)