曲线切向

The Curve Tangent node outputs the direction that a curve points in at each control point, depending on the direction of the curve (which can be controlled with the 反转曲线). The output values are normalized vectors.

Warning

For NURBS and Bézier spline curves, keep in mind that the value retrieved from this node is the value at every control point, which may not correspond to the visible evaluated points. For example, a Bézier spline might have 48 evaluated points, but only four control points, if its resolution is 12. For NURBS splines the difference may be even more pronounced and the result may not be as expected. A 重采样曲线 can be used to create a poly spline, where there is a control point for every evaluated point.

输入

该节点没有输入项。

属性

该节点没有属性。

输出

切向 (正切)

曲线上每个控制点的方向。