Function interpolateRotation

interpolateRotation(
    from: Euler,
    to: Euler,
    t: number,
    easingFn?: EasingFunction,
): Euler
Interpolate between two Euler rotations

Performs spherical linear interpolation (slerp) for smooth rotation.
Parameters
- from: Euler
  Start rotation
- to: Euler
  End rotation
- t: number
  Interpolation factor (0-1)
- easingFn: EasingFunction = easeLinear
  Easing function to apply
Returns Euler
Interpolated rotation

Korean
회전보간
- Defined in systems/animation/builders/KeyframeInterpolation.ts:420