Sha256: 19d88783d249331b369cd952e4d5ef512314153c54f92ae4ef0adb42cbe34d4f
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Size: 1.02 KB
Versions: 6
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Stored size: 1.02 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
# Skew y 30 degrees
gc.skewy(30)
# Draw down-pointing arrow
gc.fill('gray50')
gc.line(0, -max_y, 0, max_y)
gc.line(0, max_y, 10, max_y - 10)
gc.line(0, max_y, -10, max_y - 10)
# Draw right-pointing arrow
gc.stroke('red')
gc.stroke_width(3)
gc.line(-max_x + 10, 0, max_x - 10, 0)
gc.line(max_x - 10, 0, max_x - 20, -10)
gc.line(max_x - 10, 0, max_x - 20, 10)
gc.draw(imgl)
# Add labels
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(15, 0, "'0,0'")
gc.gravity(Magick::EastGravity)
gc.text(10, 0, "'+x'")
gc.gravity(Magick::SouthGravity)
gc.text(10, 20, "'+y'")
gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')
imgl.write('skewy.gif')
Version data entries
6 entries across 6 versions & 1 rubygems