pub fn power_scale(t: f64, power: f64) -> f64
Vital’s power curve: (e^(p*t) - 1) / (e^p - 1), or t when |p| < 0.01. It maps 0 to 0 and 1 to 1 and bends in between.
(e^(p*t) - 1) / (e^p - 1)
t
|p| < 0.01