# File gtk2/sample/gtk-demo/cairo-arc.rb, line 25 def draw(cr) cr.arc(CENTER_X, CENTER_Y, RADIUS, ANGLE1, ANGLE2) cr.stroke # draw helping lines cr.set_source_rgba(1, 0.2, 0.2, 0.6) cr.arc(CENTER_X, CENTER_Y, 0.05, 0, 2 * Math::PI) cr.fill cr.set_line_width(0.03) cr.arc(CENTER_X, CENTER_Y, RADIUS, ANGLE1, ANGLE1) cr.line_to(CENTER_X, CENTER_Y) cr.arc(CENTER_X, CENTER_Y, RADIUS, ANGLE2, ANGLE2) cr.line_to(CENTER_X, CENTER_Y) cr.stroke end
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