/// <summary>
/// 夹角大小
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static LFloat Angle(LQuaternion a, LQuaternion b)
{
LFloat single = Dot(a, b);
return(LMath.Acos(LMath.Min(LMath.Abs(single), LFloat.one)) * 2 * (180 / LMath.PI));
}