Roulette curve 33

by Firkin - uploaded on October 17, 2015, 6:59 am

A spirograph-type curve such as would be obtained by rolling around the inside of a superellipse (major axis = 4 and minor axis = 2, exponent = 4) a circle with radius 0.407 for three revolutions, the drawing point being midway between the circle's centre and perimeter.