#!/usr/bin/perl

use strict;
use warnings;

use Image::Magick;
use Image::Magick::PolyText::FreeType;
use Time::Elapsed qw(elapsed);

# ------------------------------------------------
# Set up
# ------

print "Image::Magick V $Image::Magick::VERSION. \n";
print "Image::Magick::PolyText::FreeType V $Image::Magick::PolyText::FreeType::VERSION. \n";
print "\n";

my $start_time = time();
my $x_1        = [100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700];
my $y_1        = [100, 147, 184, 199, 190, 159, 114, 65, 25, 3, 5, 30, 73];
my $x_2        = [100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700];
my $y_2        = [250, 297, 334, 349, 340, 309, 264, 215, 175, 153, 155, 180, 223]; # $y_1[*] + 150.
my $image      = Image::Magick -> new(size => '800 x 400');
my $result     = $image -> Read('xc:white');
$result        = $image -> Set(font => '/usr/share/fonts/type1/gsfonts/n019003l.pfb');

die $result if $result;

my $polytext_1 = Image::Magick::PolyText::FreeType -> new
({
	debug        => 0,
	fill         => 'Red',
	image        => $image,
	pointsize    => 16,
	rotate       => 1,
	slide        => 0.1,
	stroke       => 'Red',
	strokewidth  => 1,
	text         => 'Draw.text.along.a.polyline', # Can't use spaces!
	x            => $x_1,
	'y'          => $y_1, # y eq tr, so emacs' syntax highlighting is stuffed without ''.
});
my $polytext_2 = Image::Magick::PolyText -> new
({
	debug        => 0,
	fill         => 'Red',
	image        => $image,
	pointsize    => 16,
	rotate       => 1,
	slide        => 0.2,
	stroke       => 'Red',
	strokewidth  => 1,
	text         => 'Draw.text.along.a.polyline', # Can't use spaces!
	x            => $x_2,
	'y'          => $y_2, # y eq tr, so emacs' syntax highlighting is stuffed without ''.
});

# Draw the curves
# ---------------

$polytext_1 -> draw({stroke => 'red'});
$polytext_1 -> highlight_data_points({stroke => 'black'});
$polytext_2 -> draw({stroke => 'green'});
$polytext_2 -> highlight_data_points({stroke => 'blue'});

# Draw the text
# -------------

$polytext_1 -> annotate();
#$polytext_2 -> annotate();

# Write the image to disk
# -----------------------

my $output_file_name = 'ptf.png';

$result = $image -> Write($output_file_name);

die $result if $result;

print "Wrote $output_file_name. \n";
print "Image depth: @{[$image -> get('depth')]} bits per pixel. \n";
print "That took @{[elapsed(time() - $start_time)]}. \n";