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CHAPTER 6: SPECIAL EFFECTS 235
Frame-based animations
Frame-based animations are a sequence of images (frames) with incremental
changes from one to the next, that create the illusion of movement when viewed in
succession. Frames in the sequence that mark important visual transitions are
called key frames. Frames filling in the incremental positions of the object or
effect between key frames are calculated and inserted to create a smooth
animation.
Jump animation key frames
The Key frame control panel in PhotoImpact makes it very simple to create GIF
animations. The selection or image to be animated appears above the panel to the
left, where you can move the object or the focus of effect from key frame to key
frame. Above the panel are the parameters of the object or effect's behavior.
Under the preview window is the effects gallery with presets to apply to your
animation.
By default, animations have 10 frames, of which the first and last frames are key
frames. The number of frames can be adjusted at any time using the Total
frames slider bar. Use the navigation buttons (previous frame, next frame,
previous key frame and next key frame buttons) to navigate through the frames.
Alternatively, type the number of the frame you wish to edit in the Current frame
box.
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