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grav.rb.html
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<!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" />
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<title>RMagick example: grav.rb</title>
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<body>
<h1>grav.rb</h1>
<div class="bodybox">
<div class="bodyfloat">
<pre class="language-ruby">
# frozen_string_literal: true
require 'rmagick'
imgl = Magick::ImageList.new
imgl.new_image(400, 200, Magick::HatchFill.new('white', 'lightcyan2'))
gc = Magick::Draw.new
# Draw blue lines to indicate positioning
gc.stroke('blue')
gc.fill('transparent')
gc.rectangle(20, 20, 380, 180)
gc.line(200, 20, 200, 180)
gc.line(20, 100, 380, 100)
# Draw text at all 9 compass points.
gc.font_weight(Magick::NormalWeight)
gc.font_style(Magick::NormalStyle)
gc.fill('black')
gc.fill_opacity(1)
gc.stroke('transparent')
gc.gravity(Magick::NorthWestGravity)
gc.text(20, 20, 'NorthWestGravity')
gc.gravity(Magick::NorthGravity)
gc.text(0, 20, 'NorthGravity')
gc.gravity(Magick::NorthEastGravity)
gc.text(20, 20, 'NorthEastGravity')
gc.gravity(Magick::WestGravity)
gc.text(20, 0, 'WestGravity')
gc.gravity(Magick::CenterGravity)
gc.text(0, 0, 'CenterGravity')
gc.gravity(Magick::EastGravity)
gc.text(20, 0, 'EastGravity')
gc.gravity(Magick::SouthWestGravity)
gc.text(20, 20, 'SouthWestGravity')
gc.gravity(Magick::SouthGravity)
gc.text(0, 20, 'SouthGravity')
gc.gravity(Magick::SouthEastGravity)
gc.text(20, 20, 'SouthEastGravity')
gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')
imgl.write('grav.gif')
exit
</pre>
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