public Quaternion fromAngleAxis (float angle, IVector3 axis) {
        return fromAngleAxis(angle, axis.x(), axis.y(), axis.z());
    }
public Quaternion fromAngleAxis ( float angle , IVector3 axis ) { return fromAngleAxis ( angle , axis . x ( ) , axis . y ( ) , axis . z ( ) ) ; }
Sets this quaternion to the rotation described by the given angle and normalized
axis.

@return a reference to this quaternion, for chaining.