Apple Motion Bedienungsanleitung PDF herunterladen (Seite 36)

134 Animating with Keyframes

In this exercise, you’d like the curtains to stay closed for the first second. In other words,

you want the rotation of the Cog1 layer to remain at 0 degrees from 0:00 to 1:00, and then

start to change. So, let’s delete the current keyframe at 0:00 and create a new one at 1:00.

NOTE

Deleting the first keyframe isn’t strictly necessary, but knowing how to do it

is useful.

1 In the Keyframe Editor, select the keyframe at 0:00. Then press Delete to remove it.

Only the keyframe at 5:00 remains, and the flat dotted line indicates that there is no

animation because only one keyframe exists, and at least two keyframes with different

values are required to create animation. The Rotation value at the keyframe of –300

is the same for the entire layer, and the curtains remain open. You want them to be

closed at 1:00.

2 In the timing display, type 1. (1 period), and press Return to move the playhead to 1:00.

3 In the Keyframe Editor, from the Animation pop-up menu, choose Add Keyframe.

When adding keyframes manually, you must first add the keyframe, and then change

the value. If you change the value first, you change the value of the parameter for the

full duration of the layer, not just at the playhead.

After you set a keyframe and moved the playhead, you can press Control-K

to set a keyframe for that same parameter, or choose Object > Add Keyframe. In this

case, the menu would read Object > Add Rotation Keyframe.

4 Double-click the value field for Transform.Rotation.Z, type 0, and press Return.

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Apple Motion Bedienungsanleitung Seite 36