循环模式

THREE.LoopOnce
THREE.LoopRepeat
THREE.LoopPingPong

插值模式

THREE.InterpolateDiscrete
THREE.InterpolateLinear
THREE.InterpolateSmooth

结束模式

THREE.ZeroCurvatureEnding
THREE.ZeroSlopeEnding
THREE.WrapAroundEnding

源代码

src/constants.js