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# Copyright (c) 2005 Ruby-GNOME2 Project Team
# This program is licenced under the same licence as Ruby-GNOME2.
#
# $Id: cairo-curve-to.rb,v 1.1 2005/10/12 05:38:30 ktou Exp $
=begin
= cairo/Curve To
This demo shows how to use GDK and cairo to draw curve.
From http://cairographics.org/samples/curve_to.html.
=end
require 'common'
module Demo
class CairoCurveTo < CairoWindow
X = 0.1
Y = 0.5
X1 = 0.4
Y1 = 0.9
X2 = 0.6
Y2 = 0.1
X3 = 0.9
Y3 = 0.5
def initialize
super('cairo curve to')
end
def draw(cr)
cr.move_to(X, Y)
cr.curve_to(X1, Y1, X2, Y2, X3, Y3)
cr.stroke
cr.set_source_rgba(1, 0.2, 0.2, 0.6)
cr.set_line_width(0.03)
cr.move_to(X, Y)
cr.line_to(X1, Y1)
cr.move_to(X2, Y2)
cr.line_to(X3, Y3)
cr.stroke
end
end
end
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