Press space to toggle between full trail, the trail slowly disappearing, and no trail at all. Each row has the same y value, and each column has the same x value, which oscillates. The speed of oscillation increases as you move right / down across each curve. Each curve has the parametric equation of x = cos(at) y = sin(bt) where a and b are the speeds of oscillation (and shifted and expanded into its appropriate position) More info: mathworld.wolfram.com/LissajousCurve.html
#math #art #pen
