Macro mina::timeline

timeline!() { /* proc-macro */ }

Configures and creates a Timeline for an Animate type.

Provides a more ergonomic, CSS-like alternative to the builder syntax using TimelineConfiguration and TimelineBuilder, producing the same result. Requires an Animate type for the values.

Example

use mina::prelude::*;

#[derive(Animate, Clone, Debug, Default, PartialEq)]
struct Style {
    alpha: f32,
    size: u16,
}

let timeline = timeline!(Style 2s reverse Easing::Out
    from { alpha: 0.5, size: 50 }
    to { alpha: 1.0, size: 100 });

let mut values = Style::default();
timeline.update(&mut values, 0.25);
assert_eq!(values, Style { alpha: 0.578125, size: 58 });
timeline.update(&mut values, 0.5);
assert_eq!(values, Style { alpha: 0.75, size: 75 });
timeline.update(&mut values, 1.0);
assert_eq!(values, Style { alpha: 1.0, size: 100 });
timeline.update(&mut values, 1.25);
assert_eq!(values, Style { alpha: 0.921875, size: 92 });
timeline.update(&mut values, 1.5);
assert_eq!(values, Style { alpha: 0.75, size: 75 });
timeline.update(&mut values, 2.0);
assert_eq!(values, Style { alpha: 0.5, size: 50 });