Normal Node

Normal node.

The Normal node returns a vector for each evaluated point indicating the normal direction. The output can depend on the attribute domain used in the node evaluating the field, but the output is always a normalized .

面

On the face domain, the normal is the “up” direction of the face.

Mesh Vertices

边

The normal output for each edge is the average of the edge’s two vertex normals.

面拐

The output for each face corner is the same as the face normal of the corresponding face.

Curve Control Points

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 NURBS splines the difference may be even more pronounced and the result may not be as expected. A Resample Curve Node can be used to create a poly spline, where there is a control point for every evaluated point.

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法向