Crate cranpose_animation 

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.

• API reference on docs.rs
• Source on GitHub

Re-exports

pub use color::animateColorAsState;

pub use decay_spec::ExponentialDecaySpec;

pub use decay_spec::FloatDecayAnimationSpec;

pub use decay_spec::IOS_DECELERATION_RATE_FAST;

pub use decay_spec::IOS_DECELERATION_RATE_NORMAL;

pub use geometry_animation::animateOffsetAsState;

pub use geometry_animation::animateRectAsState;

pub use geometry_animation::animateSizeAsState;

pub use transition::Transition;

pub use transition::updateTransition;

pub use unit_animation::animateDpAsState;

pub use animation::*;

Modules

animation

Animation system for Cranpose

color

Color animation for Cranpose

decay_spec

Decay animation specification for fling animations.

geometry_animation

Animation over Cranpose’s 2D geometry types.

prelude

transition

Finite, state-driven, multi-property animation.

unit_animation

Animation over Cranpose’s density/scale unit types.