Sha256: f04fd7990e37f2b3a6285dcca048d1438281f96e444c1b5ef057e7770a21ee30
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Size: 1.05 KB
Versions: 15
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Stored size: 1.05 KB
Contents
#! /usr/local/bin/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
15 entries across 15 versions & 2 rubygems