Sha256: 36cb33037604f3850edb785d6ee1847647d28ca8a3f56a2b07e317974e1ad5ea
Contents?: true
Size: 796 Bytes
Versions: 52
Compression:
Stored size: 796 Bytes
Contents
#! /usr/local/bin/ruby -w
require 'RMagick'
imgl = Magick::ImageList.new
imgl.new_image(200, 200, Magick::HatchFill.new('white','lightcyan2'))
gc = Magick::Draw.new
# Move the origin to the center.
gc.translate(100, 100)
max_x = imgl.columns/2
max_y = imgl.rows/2
# Rotate 45 degrees
gc.rotate(45)
gc.stroke('red')
gc.stroke_width(3)
# Draw down-pointing arrow
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.line(-max_x, 0, max_x, 0)
gc.line( max_x, 0, max_x-10, -10)
gc.line( max_x, 0, max_x-10, 10)
# Add labels
gc.fill('black')
gc.stroke('transparent')
gc.text(8, 15, "'0,0'")
gc.text(110, 16, "x")
gc.text(12, 115, "y")
gc.draw(imgl)
imgl.border!(1,1, "lightcyan2")
imgl.write("rotate.gif")
Version data entries
52 entries across 52 versions & 1 rubygems