SubDFromMesh

The SubDFromMesh command converts an ordinary mesh into a SubD object.

The resulting SubD object can be evaluated to create a limit surface, a collection of NURBS surfaces, or a control net.

Warning

This is very early work that is unlikely to be completed in time for Rhino 6, but Rhino WIP with SubD will still be available to everyone with the most current released version of Rhino.
SubD will be a completely new object type in Rhino. We are currently working the lowest level core geometry code. Once that is stable all of the major work will start that is need to make the new SubD object behave like other Rhino object, and as everyone expects a SubD object to behave.

For more information, see Rhino SubD Project.

Command-line options

Creases

Specifies if unwelded edges turn into sharp edges on the output SubD object.

The input mesh. Red edges are unwelded.

Yes

Unwelded edges become creases on the SubD object. Creases have thick and continuous control polygons.

No

Unwelded edges become smooth on the SubD object. Non-creases have normal control polygons.

Corners

Specifies if naked corners of quad-faces will be kept or rounded in the output SubD object.


The input mesh	Corners=Yes	Corners=No

The Corners option does not affect triangle and N-gon naked corners.

DeleteInput

Yes

Deletes the input object.

No

Keeps the input object.

SubDivide

The SubDivide command applies iterations of the Catmull-Clark subdivision to SubD or mesh objects.


The input mesh.	1 iteration.	2 iterations.

Command-line options

SubDivisionCount

Select to apply 1 or 2 subdivision iterations to the input object.

Creases (Mesh Only)

Yes

Creases (unwelded edges) are retained. Sharp edges will stay sharp.

No

Creases are not retained. Vertices on creases are welded. Sharp edges will be smoothed.

RemoveLowerLevels (SubD Only)

Yes

Does not keep previous subdivision levels.

No

keeps previous subdivision levels.

DeleteInput

Yes

Deletes the input object.

No

Keeps the input object.

SelSubD

The SelSubD command selects all Rhino SubD objects in the model that are not locked or hidden.

SelOpenSubD

Toolbar	Menu
Not on toolbars.	Not on menus.

Toolbar

Not on toolbars.

Not on menus.

The SelOpenSubD command selects all Rhino SubD objects in the model that have a boundary and are not locked or hidden.

SelClosedSubD

Toolbar	Menu
Not on toolbars.	Not on menus.

Toolbar

Not on toolbars.

Not on menus.

The SelClosedSubD command selects all Rhino SubD objects in the model that do not have a boundary and are not locked or hidden.