Gyro is a feature-rich, extensible collection of classes for creating tweens and other forms of animation with ActionScript 3. It supports step-based (typically frame-based) and time-based animations for changing any visual (or other) property over time as well as classes for following/drawing paths and applying seeking or constant motion.
Gyro is still in early development. For an alpha preview, see: http://www.senocular.com/gyro
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