The operation of this test case is very simple. Drag the control points to shape the spline. The animation defined by this spline is applied to the first circle along the vertical axis whilst a constant animation is applied along the horizontal axis. This will cause the circle to follow the path defined by the spline.
Below the graph the same animation is applied to a circle along the horizontal axis. This allows you to see the effect of the animation in isolation.
Note: All credit for the concept of this test case belongs to Ron K Lussier of Burning Pixel Productions. I have deliberately not made this test case produce textual output like the keySpline tool. If you're looking for such a tool try:
