interpolate

fun interpolate(a: Quaternion, b: Quaternion, blend: Float): Quaternion
fun interpolate(a: Float3, b: Float3, blend: Float): Float3

Interpolation between a and b. blend is expected to be a value between 0..1.

It returns a vector close to a when the blend value is close to 0. It returns a vector close to b when the blend value is close to 1.