If you want animation that starts, stops, and changes direction at specific points in time, use keyframes. Whether you should choose to animate using keyframes or behaviors is not always a clear-cut decision but as a rule of thumb, if you want repeated, continuous motion-such as a graphic drifting across the screen, a pendulum swinging, or a neon sign blinking-use behaviors. In Motion, keyframes work much the same way: You are the senior artist, creating your composition and identifying the frames you want to establish as keyframes and the computer acts as the junior artist, creating in-between frames of animation through a process called interpolation.
The term keyframes, or key frames, originates from traditional hand-animation techniques in which a senior artist would draw “key” poses of a character and turn over those images to a junior artist, who would draw the in-between frames to create smooth character animation from one keyframe to the next. Setting keyframes is a way to articulate an animation-that is, manually identify exactly what, when, and how you want to animate.
In the previous lesson, behaviors allowed you to create animation procedurally-you applied a behavior that contained a set of instructions for making the layer animate. Set keyframes for multiple layers simultaneouslyĬhoose keyframe curves for editing in the Keyframe Editor This lesson takes approximately 60 minutes to complete.Ĭhange keyframe interpolation and adjust keyframe curvesĪdd, move, and change the values of keyframes on a curve Motion5_Book_Files > Media > Rockumentary
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