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