Gecko [ www.utparral.edu.mx ]

Name	Size	Permission
bevels.pl	6 KB	-rw-r--r--
caps_joins.pl	1.41 KB	-rw-r--r--
hering.pl	1.15 KB	-rw-r--r--
outline.pl	2.07 KB	-rw-r--r--
README	165 B	-rw-r--r--
snapping.pl	9.08 KB	-rw-r--r--
spiral.pl	895 B	-rw-r--r--
spline-pipeline.pl	2.46 KB	-rw-r--r--
splines_tolerance.pl	1018 B	-rw-r--r--
star_and_ring.pl	4.62 KB	-rw-r--r--
stars.pl	1.06 KB	-rw-r--r--
text.pl	3.12 KB	-rw-r--r--
text-rotate.pl	1.85 KB	-rw-r--r--

Code Editor : text-rotate.pl

#!/usr/bin/perl

use strict;
use warnings;
use Cairo;

use constant
{
	WIDTH => 450,
	HEIGHT => 900,
	NUM_STRINGS => 3,
	M_PI => 4 * atan2(1, 1),
};

{
	my $surface = Cairo::ImageSurface->create ('argb32', WIDTH, HEIGHT);
	my $cr = Cairo::Context->create ($surface);

$cr->set_source_rgb (0.0, 0.0, 0.0);

$cr->translate (40, 40);

$cr->select_font_face ('mono', 'normal', 'normal');
	$cr->set_font_size (12);
	$cr->show_text ('+CTM rotation');

$cr->translate (0, HEIGHT / 3);

$cr->move_to (0, 0);
	$cr->show_text ('+CTM rotation');
	$cr->rel_move_to (0, 12);
	$cr->show_text ('-font rotation');

$cr->save;
	$cr->select_font_face ('serif', 'normal', 'normal');
	$cr->set_font_size (40);
	for (my $i = 0; $i < NUM_STRINGS; $i++) {
		my $angle = $i * 0.5 * M_PI / (NUM_STRINGS - 1);
		$cr->save;
		$cr->rotate ($angle);
		my $matrix = Cairo::Matrix->init_identity;
		$matrix->scale (40, 40);
		$matrix->rotate (-$angle);
		$cr->set_font_matrix ($matrix);
		$cr->move_to (100, 0);
		$cr->show_text ('Text');
		$cr->restore;
	}
	$cr->restore;

$cr->translate (0, HEIGHT / 3);

$cr->move_to (0, 0);
	$cr->show_text ('+CTM rotation');
	$cr->rel_move_to (0, 12);
	$cr->show_text ('-CTM rotation');

$cr->save;
	$cr->select_font_face ('serif', 'normal', 'normal');
	$cr->set_font_size (40);
	for (my $i = 0; $i < NUM_STRINGS; $i++) {
		my $angle = $i * 0.5 * M_PI / (NUM_STRINGS - 1);
		$cr->save;
		$cr->rotate ($angle);
		$cr->move_to (100, 0);
		$cr->rotate (-$angle);
		$cr->show_text ('Text');
		$cr->restore;
	}
	$cr->restore;

$surface->write_to_png ('text-rotate.png');
}

${this.title}

Code Editor : text-rotate.pl