Remove Excessive Knots (NURBS Surface)

Functionality

This node performs “knot removal” procedure for a NURBS surface, trying to remove as many knots, and as many times, as it is possible, without changing the shape of the surface too much. Allowed change of shape is controlled by “tolerance” parameter.

This node can only work with NURBS surfaces.

Inputs

This node has the following input:

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

Parameters

This node has the following parameters:

  • Direction. This defines, in which parametric directions should the knot removal procedure be performed. The available options are U+V (both directions), U and V. The default value is U+V.

  • Tolerance. This defines how much is it allowed to change the shape of the surface by knot removal procedure. The default value is 10^-6.

Outputs

This node has the following output:

  • Surface. The resulting Surface object.