A motion path is defined by the centers of the key frames. Each key frame can be set to be a Bézier curve point or straight line point. Each Bézier curve point can also be set to be a smooth curve or a corner. A corner curve has curves coming in and out but will meet at a corner. A smooth curve has a smooth curve going through it.

To construct a curved motion path

  1. Add key frames to your motion (see Adding and inserting a key frame).

  2. Select one or more key frames (see Selecting key frames).

  3. Check or uncheck the Bézier check box in the Key Frame inspector.

  4. Check or uncheck the Smooth check box in the Key Frame inspector.

    Key frame inspector
  5. Drag the key frames and Bézier control lines to form your motion path.

You can also control click on the key frame center to set the curve directly in the multiple key frame editor.