Unity 曲线切线模式 的隐藏枚举 KeyFrame.tangentMode

enum TangentMode{    Auto = 10,    FreeSmooth = 0,    Flat = 0,    Broken = 1,    //LeftTangent和RightTangent一起設置需要與運算 l | r    LeftTangent_Free = 0x001,    LeftTangent_Linear = 0x101,    LeftTangent_Constant = 0x111,    RightTangent_Free = 0x00001,    RightTangent_Linear = 0x10001,    RightTangent_Constant = 0x11001}