Cubic Bezier Curve

[whj]

Hello,

What I understood about Cubic Bezier curve is that, given two endpoints and two control points, it is a smooth curve that begins and end at the endpoints, but not passes through the control points. Wikipedia has examples. While animation path in the cubic_bezier mode passes through all the control points and endpoints. Could anybody explain to me, for animation path in the cubic_bezier mode, how to determine the cubic bezier curve according to control points?

Thanks a lot.