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Contents
require 'rvg/rvg'
rvg = Magick::RVG.new(400, 120) do |canvas|
canvas.desc = 'Example Skew - Show effects of skewX and skewY'
canvas.background_fill = 'white'
canvas.g.styles(:fill=>'none',:stroke=>'black',:stroke_width=>3) do |grp|
# Draw the axes of the original coordinate system
grp.line(0, 1.5, 400, 1.5)
grp.line(1.5, 0, 1.5, 120)
end
# Establisha new coordinate system whose origin is at (30,30)
# in the initial coord. system and which is skewed in X by 30 degrees.
canvas.g.translate(30,30) do |grp|
grp.skewX(30) do |grp2|
grp2.g.styles(:fill=>'none', :stroke=>'red', :stroke_width=>3) do |grp3|
grp3.line(0, 0, 50, 0)
grp3.line(0, 0, 0, 50)
end
grp.text(0, 0, 'ABC (skewX)').styles(:font_size=>20, :fill=>'blue', :font_family=>'Verdana')
end
end
# Establish a new coordinate system whose origin is at (200,30)
# in the initial coord. system and which is skewed in Y by 30 degrees.
canvas.g.translate(200,30) do |grp|
grp.skewY(30) do |grp2|
grp2.g.styles(:fill=>'none', :stroke=>'red', :stroke_width=>3) do |grp3|
grp3.line(0, 0, 50, 0)
grp3.line(0, 0, 0, 50)
end
grp.text(0, 0, 'ABC (skewY)').styles(:font_size=>20, :fill=>'blue', :font_family=>'Verdana')
end
end
end
rvg.draw.write('Skew.gif')
Version data entries
44 entries across 44 versions & 1 rubygems