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spring

rdi_core::procedural

Function spring 

Source 
pub fn spring(
    damping: f32,
    stiffness: f32,
    mass: f32,
) -> Result<Curve, CurveError>
Expand description

Damped-cosine “spring” curve.

  • damping — fraction of critical damping in [0, 1]. 0.0 = pure oscillation, 1.0 = critically damped.
  • stiffness, mass — control the natural angular frequency ω = sqrt(stiffness / mass).

The curve starts at 0, overshoots 1 (unless critically damped) and settles near 1 at t = 1. It is normalised so the shape doesn’t depend on the animation’s wall-clock duration.