Bezier curve

Click "Add point" to add a control point, and "Remove point" to remove the last point.
You can drag the points around with the mouse.

A Bezier curve with no control points (a "linear" Bezier curve) is just a line. If you add one control point you get a "quadratic" Bezier curve; with two control points you get a "cubic" Bezier curve, and so on.

Show points