Sha256: 78d987a4640a3249a1a3c4beb68456766817e19d1b645636cdd429ee3e9512f0
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Size: 1.06 KB
Versions: 6
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Stored size: 1.06 KB
Contents
#!/usr/bin/env ruby -w
require 'rmagick'
imgl = Magick::ImageList.new
imgl.new_image(250, 250, Magick::HatchFill.new('white', 'lightcyan2'))
gc = Magick::Draw.new
# Move the origin to the center.
gc.translate(125, 125)
max_x = imgl.columns / 2
max_y = imgl.rows / 2 - 5
# Skew x 30 degrees
gc.skewx(30)
# Draw down-pointing arrow
gc.fill('red')
gc.stroke('red')
gc.stroke_width(3)
gc.line(0, -max_y, 0, max_y)
gc.line(0, max_y, 7, max_y - 7)
gc.line(0, max_y, -7, max_y - 7)
# Draw right-pointing arrow
gc.stroke('gray50')
gc.stroke_width(1)
gc.line(-max_x, 0, max_x, 0)
gc.line(max_x, 0, max_x - 5, -5)
gc.line(max_x, 0, max_x - 5, 5)
gc.draw(imgl)
# Add labels using "normal" skew
gc = Magick::Draw.new
gc.pointsize(14)
gc.font_weight(Magick::NormalWeight)
gc.font_style(Magick::NormalStyle)
gc.stroke('transparent')
gc.gravity(Magick::CenterGravity)
gc.text(10, -10, "'0,0'")
gc.gravity(Magick::EastGravity)
gc.text(10, 10, "'+x'")
gc.gravity(Magick::SouthGravity)
gc.text(0, 20, "'+y'")
gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')
imgl.write('skewx.gif')
Version data entries
6 entries across 6 versions & 1 rubygems