#!/usr/bin/env perl
#
# Note: t/test.t searches for the next line.
# Annotation: Demonstrates linked non-cluster subgraphs via a macro.
use strict;
use warnings;
use File::Spec;
use GraphViz2;
use Log::Handler;
# -----------------------------------------------
sub macro
{
my($graph, $name, $node_1, $node_2) = @_;
$graph -> push_subgraph
(
name => $name,
graph => {label => $name},
node => {color => 'magenta', shape => 'diamond'},
);
$graph -> add_node(name => $node_1, shape => 'hexagon');
$graph -> add_node(name => $node_2, color => 'orange');
$graph -> add_edge(from => $node_1, to => $node_2);
$graph -> pop_subgraph;
} # End of macro.
# -----------------------------------------------
my($logger) = Log::Handler -> new;
$logger -> add
(
screen =>
{
maxlevel => 'debug',
message_layout => '%m',
minlevel => 'error',
}
);
my($id) = '2';
my($graph) = GraphViz2 -> new
(
edge => {color => 'grey'},
global => {directed => 1},
graph => {label => "Macro demo $id - Linked non-cluster sub-graphs", rankdir => 'TB'},
logger => $logger,
node => {shape => 'oval'},
);
macro($graph, 'One', 'Chadstone', 'Waverley');
macro($graph, 'Two', 'Hughesdale', 'Notting Hill');
$graph -> add_edge(from => 'Chadstone', to => 'Notting Hill', lhead => 'cluster 2', ltail => 'cluster 1', minlen => 2);
my($format) = shift || 'svg';
my($output_file) = shift || File::Spec -> catfile('html', "macro.$id.$format");
$graph -> run(format => $format, output_file => $output_file);