fromEuler
fun Quaternion.Companion.fromEuler(a: Angle, b: Angle, c: Angle, rotationOrder: RotationOrder): Quaternion(source)
Based on https://github.com/mrdoob/three.js/blob/master/src/math/Quaternion.js
Based on https://github.com/mrdoob/three.js/blob/master/src/math/Quaternion.js