曲线根部

The Curve Root node outputs information related to the root point of each curve. It is commonly used in hair grooming and procedural setups to anchor deformations, apply transformations relative to the curve base, or isolate operations affecting only the roots.

输入

该节点没有输入项。

输出

根部选择

A boolean selection that is true only for the root points of curves. This is useful for applying operations exclusively at the curve base.

根部位置

The position of each curve's root point in 3D space. This can be used for aligning objects, sampling data from a surface, or generating root-based effects.

根部方向

A normalized vector representing the direction of the first segment of the curve, pointing away from the root toward the next control point. This is useful for orienting instances or determining the initial growth direction of the curve.

根部编号

The index of the root point for each curve. This is typically 0 for every curve, but it can be used to identify root points when processing multiple curves together.