cranpose-animation

cranpose-animation provides spring, tween, decay, and state-driven transition APIs for Cranpose. The crate owns animation math and frame callbacks; UI widgets use the same types as app code.

Depend directly on cranpose-animation for animation primitives or custom widgets. UI applications also use the cranpose facade for composition and host setup. The feature set is empty.

Spring step

advance_spring computes one spring step from the current value, velocity, target, damping ratio, stiffness, and elapsed seconds:

use cranpose_animation::{Spring, advance_spring};

let (position, velocity) = advance_spring(
    0.0,
    0.0,
    100.0,
    Spring::DampingRatioNoBouncy,
    Spring::StiffnessMedium,
    1.0 / 60.0,
);

assert!(position > 0.0);
assert!(velocity > 0.0);

Inside a composable, animateFloatAsState follows each new target and returns a reactive State<f32>. updateTransition coordinates several values from one state. Animatable<T> supports imperative targets and release velocity. Types with one to four float dimensions can implement SpringScalar and Lerp.

cranpose-animation 0.9.7

cranpose-animation

Spring step