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Incremental Animation
When an object's next position is calculated by adding
some increment (velocity) to its current position, the animation
can be classified as "incremental". The first three demos of
the tutorial were incremental animations. The other types of animation
covered in this tutorial are parametric and recorded.
Incremental animation is good for modelling natural
motions, especially complex ones or user-responsive
ones. A drawback is that it may be difficult to predict
exactly where this type of motion will put an object at a certain point
in time. If you want to have an object arrive at a specific point and
the path isn't complicated, use parametric animation.
Incremental animation is affected by the round-off
Director does to loch, locv, and other properties.
The method of avoiding its adverse effects, described in
The Round-Off Effect, will be used in the incremental animation
samples in the tutorial.
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