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dancing_string demo: handle large input.time

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casting time to f32 is a bad idea if the time is seconds since epoch
as it is on some integrations.
This commit is contained in:
Emil Ernerfeldt 2021-10-24 18:38:44 +02:00
parent c090497727
commit c335c56de1
1 changed files with 6 additions and 6 deletions
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12
egui_demo_lib/src/apps/demo/dancing_strings.rs
View file

@ -35,20 +35,20 @@ impl super::View for DancingStrings {
let mut shapes = vec![];
for &mode in &[2, 3, 5] {
let mode = mode as f32;
let mode = mode as f64;
let n = 120;
let speed = 1.5;
let points: Vec<Pos2> = (0..=n)
.map(|i| {
let t = i as f32 / (n as f32);
let amp = (time as f32 * speed * mode).sin() / mode;
let y = amp * (t * std::f32::consts::TAU / 2.0 * mode).sin();
to_screen * pos2(t, y)
let t = i as f64 / (n as f64);
let amp = (time * speed * mode).sin() / mode;
let y = amp * (t * std::f64::consts::TAU / 2.0 * mode).sin();
to_screen * pos2(t as f32, y as f32)
})
.collect();
let thickness = 10.0 / mode;
let thickness = 10.0 / mode as f32;
shapes.push(epaint::Shape::line(
points,
Stroke::new(thickness, Color32::from_additive_luminance(196)),