Drag the control points to change the animation path.
Animation path defined by:
x(t) = axt3 + bxt2
+ cxt + dx
y(t) = ayt3 + byt2
+ cyt + dy
Below is a continous bezier curve, and below that is a continous
loop along a bezier curve. Each time you click on start, a new animation
appears. To find out how this animation works, read our article
on the theory of Bézier curves.