Align to Spline Expression 与样条表达式对齐Basic 基础Tag 标签
Tag Properties
标签属性
样条路径
Select the relevant Align To Spline tag and then drag the Spline object from the Object manager and drop it into the Spline Path box on the Attribute Manager’s tag page.
选择相关的 Align To Spline 标记，然后将 Spline 对象从 Object Manager 拖动到 Attribute Manager 标记页面上的 Spline Path 框中。
By animating the Spline Path parameter you can change which spline the object is aligned to during the animation. 通过动画样条路径参数，您可以在动画期间更改对象与哪条样条对齐铁路径
You can optionally use a rail path. Drag the spline that you want to act as the rail from the Object Manager into the Rail Path box on the Attribute Manager’s tag page. This has a similar effect to the Align To Path tag in the sense that the object’s Z axis remains parallel to the spline’s tangent at all times.
你可以选择使用铁路路径。将要充当轨道的样条从对象管理器拖到属性管理器标记页上的轨道路径框中。这与 Align To Path 标记有类似的效果，即对象的 z 轴始终平行于样条的切线。
切线的
If you enable Tangential, the effect is similar to that of the Align To Path tag, i.e., the object’s X, Y or Z axis is aligned to the rail path.
如果您启用了切线，效果类似于对齐到路径标签，即，对象的 x，y 或 z 轴对齐到轨道路径。
位置[-∞ . . + ∞% ]
If you animate the expression’s Position parameter, the object follows the path using the axis defined by Axis. If the object should follow, say, only the first half of the spline, animate Position from 0% to 50%. For more details on how to animate this Position parameter, see the Timeline chapter and/or the Attribute Manager chapter.
如果使表达式的 Position 参数产生动画效果，则对象使用 Axis 定义的轴遵循路径。如果对象应该遵循，比如说，只有样条的前半部分，动画位置从0% 到50% 。有关如何动画此位置参数的更多细节，请参见时间轴章节和/或属性管理器章节。
Values less than 0% and greater then 100% can be used, whereby constante, repetitive movements are possible with closed splines. For open splines, the controlled object wll jump back to the spline beginning or end and will continue its movement from that point on.
值小于0% 和大于100% 都可以使用，这样就可以使用闭合的样条函数进行恒定的重复运动。对于开放样条，受控对象将跳回到样条的开头或结尾，并从该点开始继续运动。
段[0.2147483647]
Splines may consist of multiple segments. Use this parameter to choose which segment the spline follows.
样条曲线可以由多段组成。使用此参数可以选择样条曲线的下一段。
轴心
This setting is available when Tangential is enabled. It defines the axis with which it will follow the Rail path.
这个设置是可用的时候，切线启用。它定义的轴，它将遵循的轨道路径。
If a spline has its intermediate points set to Uniform, this is also taken into account for the spline animation. The object will then follow the spline at a uniform speed. 如果样条曲线的中间点设置为均匀，那么在样条动画中也要考虑这一点。然后，物体将以均匀的速度沿着样条运动