InterpolationType() 插值类型,默认值Linear Members staticconstantCesium.InterpolationType.Acceleration : Number 加速运动插值 staticconstantCesium.InterpolationType.CubicSpline : Number 三次样条曲线插值 staticconstantCesium.InterpolationType.Deceleration : Number 减速运动插值 staticconstantCesium.InterpolationType.Linear : Number 线性插值 staticconstantCesium.InterpolationType.SmoothStep : Number SmoothStep插值(y = (3 - 2 * t) * t * t)