public static UnityEngine.Vector3 AroundAxis(this IRandom rng, Vector3 axis)
{
var a = rng.Angle();
if (VectorUtil.NearSameAxis(axis, Vector3.forward))
{
return(Quaternion.AngleAxis(a, axis) * VectorUtil.GetForwardTangent(Vector3.up, axis));
}
else
{
return(Quaternion.AngleAxis(a, axis) * VectorUtil.GetForwardTangent(Vector3.forward, axis));
}
}
/// <summary>
/// Returns a rotation of up attempting to face in the general direction of forward.
/// </summary>
/// <param name="up"></param>
/// <param name="targForward"></param>
/// <returns></returns>
public static Quaternion FaceRotation(Vector3 forward, Vector3 up)
{
forward = VectorUtil.GetForwardTangent(forward, up);
return(Quaternion.LookRotation(forward, up));
}
