系统会自动设置切线,使曲线在整个关键帧上保持平滑。
这是 Unity 5.5 之前的版本中的标准切线模式,但该模式计算曲线的方式有时会导致值在到达正确值之前就过高。
在 Unity 5.5 及更高版本中,我们对切线计算进行了改进以避免值过高,但仍在引擎中保留此旧模式,以实现向后兼容。
一般来说,您应该使用 AnimationUtility.TangentMode.ClampedAuto,除非您确定自己在处理依赖旧行为的旧资源。
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