What are the two main groups of animations you know?

Two main groups of animations in Flutter:

1. Tween-based Animations: These animations define the starting and ending values of a property (range), and Flutter interpolates the values between them over a certain duration.

   • They work with animation controllers (AnimationController) and tween objects (Tween).
   • Suitable for animating numerical values, colors, sizes, opacity, etc.

2. Physics-based Animations: These animations imitate real physical processes, such as springs or damped oscillations.

   • They use classes from the flutter/physics.dart library.
   • They do not have a fixed duration but respond to changes in velocity or other physical parameters.
   • Examples: SpringSimulation, FrictionSimulation.