Iso U/V Curve

https://github.com/nortikin/sverchok/assets/14288520/92c4575f-f2bd-4632-8843-576f62485bfa

Functionality

This node generates a curve on the surface, which is defined by setting either U or V surface parameter to some fixed value and letting the other parameter slide along it’s domain.

If input surface is a NURBS surface, then the node will try to output NURBS curves.

https://github.com/nortikin/sverchok/assets/14288520/f97c1527-e99c-49e1-a2c8-e1c7d0fde3c7

Inputs

This node has the following inputs:

  • Surface. The surface to generate curves on. This input is mandatory.

  • Value. The value of U or V surface parameter to generate curve at. The default value is 0.5.

Parameters

This node has the following parameter:

  • Join. If checked, the node will output a single flat list of Curve objects for all sets of input parameters. Otherwise, it will output a separate list of Curve objects for each set of input parameters. Checked by default.

Outputs

This node has the following outputs:

  • UCurve. The curve obtained by setting the U parameter of the surface to Value and letting V slide along it’s domain. So, this curve is elongated along surface’s V direction.

  • VCurve. The curve obtained by setting the V parameter of the surface to Value and letting U slide along it’s domain. So, this curve is elongated along surface’s U direction.

Example of usage

Generate some surface and then draw curves along it’s V direction:

https://user-images.githubusercontent.com/284644/78507210-3a981080-7798-11ea-84b8-d4e6e7d66803.png