-
Notifications
You must be signed in to change notification settings - Fork 2
/
compose_mask.rb.html
49 lines (45 loc) · 1.76 KB
/
compose_mask.rb.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
<!DOCTYPE public PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta name="generator" content="ex2html.rb" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="css/popup.css" />
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script>
<script>
hljs.configure({ cssSelector: "pre" });
hljs.highlightAll();
</script>
<title>RMagick example: compose_mask.rb</title>
</head>
<body>
<h1>compose_mask.rb</h1>
<div class="bodybox">
<div class="bodyfloat">
<pre class="language-ruby">
# frozen_string_literal: true
require 'rmagick'
background = Magick::Image.read('images/Flower_Hat.jpg').first
source = Magick::Image.read('pattern:checkerboard') { |options| options.size = "#{background.columns}x#{background.rows}" }.first
mask = Magick::Image.new(background.columns, background.rows) { |info| info.background_color = 'black' }
# Make a mask
gc = Magick::Draw.new
gc.annotate(mask, 0, 0, 0, 0, 'Ruby') do |options|
options.gravity = Magick::CenterGravity
options.pointsize = 100
options.rotation = 90
options.font_weight = Magick::BoldWeight
options.fill = 'white'
options.stroke = 'none'
end
background.add_compose_mask(mask)
result = background.composite(source, Magick::CenterGravity, Magick::OverCompositeOp)
result.write 'compose_mask_example.jpg'
source.write 'compose_mask_source.gif'
mask.write 'compose_mask.gif'
</pre>
</div>
</div>
<div id="close"><a href="javascript:window.close();">Close window</a></div>
</body>
</html>