Insert Knot (NURBS Surface)

Functionality

This node performs “knot insertion” operation on a NURBS Surface object.

Given a NURBS Surface, the node adds the provided value in the surface’s U- or V-knotvector. If the provided value is already present in the knotvector, it’s multiplicity will be increased.

This node can work only with NURBS surfaces.

It is possible to provide a list of knot values (and corresponding multiplicities) for each surface.

Inputs

This node has the following inputs:

  • Surface. The Surface object to work with. This input is mandatory.

  • Knot. The value of the new knot. The default value is 0.5.

  • Count. Number of times the knot is to be inserted. The default value is 0.

Parameters

This node has the following parameter:

  • Parameter. This defines the parametric direction, for which to insert the knot. The available values are U and V. The default value is U.

Outputs

This node has the following output:

  • Surface. The resulting Surface object.