Implement baba-is-float for layers

1 files changed, 7 insertions, 0 deletions

diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index c1e57b7b..2ac37721 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1,4 +1,5 @@
 use std::cmp::{max, min};
+use std::f64;
 use std::ffi::{CString, OsStr};
 use std::io::Write;
 use std::os::unix::prelude::OsStrExt;
@@ -396,6 +397,12 @@ pub fn center_preferring_top_left_in_area(
     area.loc + offset
 }
 
+pub fn baba_is_float_offset(now: Duration, view_height: f64) -> f64 {
+    let now = now.as_secs_f64();
+    let amplitude = view_height / 96.;
+    amplitude * ((f64::consts::TAU * now / 3.6).sin() - 1.)
+}
+
 #[cfg(feature = "dbus")]
 pub fn show_screenshot_notification(image_path: Option<PathBuf>) -> anyhow::Result<()> {
     use std::collections::HashMap;