This example demonstrates using
PieChart.set3D2 to create a 3D pie chart where sectors have different 3D heights.
[File: perldemo/multidepthpie.pl] (The CGI version is available as "perldemo_cgi/multidepthpie.pl".)
#!/usr/bin/perl
use perlchartdir;
#The data for the pie chart
my $data = [72, 18, 15, 12];
#The labels for the pie chart
my $labels = ["Labor", "Machinery", "Facilities", "Computers"];
#The depths for the sectors
my $depths = [30, 20, 10, 10];
#Create a PieChart object of size 360 x 300 pixels, with a light blue (0xccccff)
#background and a 1 pixel 3D border
my $c = new PieChart(360, 300, 0xccccff, -1, 1);
#Set the center of the pie at (180, 175) and the radius to 100 pixels
$c->setPieSize(180, 175, 100);
#Add a title box using Times Bold Italic/14 points as font and 0x9999ff as
#background color
$c->addTitle("Project Cost Breakdown", "timesbi.ttf", 14)->setBackground(
0x9999ff);
#Set the pie data and the pie labels
$c->setData($data, $labels);
#Draw the pie in 3D
$c->set3D2($depths);
#Set the start angle to 225 degrees may improve layout when the depths of the
#sector are sorted in descending order, because it ensures the tallest sector is
#at the back.
$c->setStartAngle(225);
#output the chart
$c->makeChart("multidepthpie.png")
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