# SubDFromSurfaceMethods enum

Namespace: [Rhino.Geometry](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.geometry.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public enum SubDFromSurfaceMethods
```

ON_SubDFromSurfaceParameters::Method are ways to create a SubD from a surface.

## Values

| Name | Value | Description |
| --- | --- | --- |
| Unset | 0 | Used to indicate the method is not set. |
| SubDFriendlyFit | 1 | The surface is approximated with a SubD friendly NURBS surface and the SubD is created to match the subd friendly nurbs surface. If the input surface is a subd friendly NURBS surface, the subd and surface have the same geometry. |
| FromNurbsControlNet | 2 | The surface is converted to a NURBS surface and then a subd with one face per NURBS bispan is created by using an appropriate subset of the NURBS surface control net. If the input surface is a subd friendly NURBS surface, the subd and surface have the same geometry. |