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#!/usr/bin/ruby
# By Jonas Elfström - http://github.com/jonelf
$:.unshift( "../lib" )
require 'graphviz'
@min_level=1
@max_level=12
@max_depth=10
start_level=6
@g = GraphViz.new(:G, :type => "strict digraph")
# or @g = GraphViz.new(:G, :type => "digraph", :strict => true)
# or @g = GraphViz.digraph(:G, :strict => true)
# or @g = GraphViz.strict_digraph(:G)
def add_nodes(level, depth, parent)
if depth<@max_depth
current=[level, depth].join(",")
sub=level<=>@min_level
add=@max_level<=>level
add_nodes(level-sub, depth+1, current)
add_nodes(level+add, depth+1, current)
@g.add_nodes(current).label=level.to_s
@g.add_edges(parent, current) unless parent=="00"
end
end
add_nodes(start_level, 0, "00")
@g.output( :png => "#{$0}.png" )
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