Lilt

A simple, dependency free library for running interruptable, transition based animations as a function of time.

This library only implements animations & would be most useful along with a GUI library that can do GUI things (like iced).

Getting Started

Embed the state you want to animate in an Animated struct.

struct MyViewState {
    animated_toggle: Animated<bool, Instant>,
}

When you initialize your view state - choose the duration & easing you want.

MyViewState {
    animated_toggle: Animated::new(false, 300., Easing::EaseOut),
}

When your state needs an update, call the transition function on your animated state, passing the current time.

let now = std::time::Instant::now();
self
    .animated_toggle
    .transition(!self.animated_toggle.value, now)

While rendering a view based on your state - use the interpolate function on your animated state to get the in-between value for the current frame.

let now = std::time::Instant::now();
// Use the interpolated float for something like width, height, offset
let interpolated_width = self.animated_toggle.interpolate(100., 500., now)
// Or add an `Interpolable` implementation to an object of your choice, like a color
let interpolated_color = self.animated_toggle.interpolate(my_color_a, my_color_b, now)

Examples