Can you explain how Tween works and its main features?

In Flutter, Tween is a class that describes interpolation (smooth transition) between two values of a specific type. It is used for animations to compute intermediate values between the starting and ending states.

Main features of Tween:

• Defines a range of values: begin and end.
• The method lerp(double t) returns a value between begin and end, where t is a parameter from 0.0 to 1.0.
• Used together with AnimationController to control the timing of the animation.

Example usage:

final tween = ColorTween(begin: Colors.red, end: Colors.blue);

AnimationController controller = AnimationController(
  duration: Duration(seconds: 2),
  vsync: this,
);

Animation<Color?> animation = tween.animate(controller);

controller.forward();

Here, the color will smoothly change from red to blue over 2 seconds.