# LoopFormula enum

Namespace: [Rhino.Geometry.MeshRefinements](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.geometry.meshrefinements.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md) · Since v6.0

```cs
public enum LoopFormula
```

Enumerates the alternative Loop implementations.

## Values

| Name | Value | Description |
| --- | --- | --- |
| Loop | 0 | The original Loop formula. |
| Warren | 1 | Warren's improved formula. |
| WarrenWeimer | 2 | The formula as explained by Weimer, improving over Warren's. |