Green flag. Press space to continue. Turbo mode or not. Press 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 0 for different patterns. Press v to show/hide a slider for the variable n (number of curves).
I call these curves 'Starr curves' because mathematician Norton Starr came up with the idea of using this interesting family of curves for creating computer graphics: x(t) = ( 2 + 0.5 sin a t ) cos(t + (sin b t ) / c) y(t) = ( 2 + 0.5 sin a t ) sin(t + (sin b t) / c) (see Stan Wagon: Mathematica in Action)
