A spirograph-type curve such as would be obtained by rolling around the outside of a superellipse (equal major and minor axes of 2, exponent =4) a circle with radius 0.268 for three revolutions, the drawing point being 6 from the circle's centre.
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Roulette curve 29 free icon was designed by Firkin for icons Png and presented to its users.
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4/5/2018