# NurbsCurveFitParameters.TangentMatch 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) · Since v9.0

```cs
public enum NurbsCurveFitParameters.TangentMatch
```

The TangentMatch enum is used to constrain the tangents of the rebuilt curve to match those of the target curve.

## Values

| Name | Value | Description |
| --- | --- | --- |
| None | 0 | Ignore target curve start and end tangent directions. |
| AtStart | 1 | Match the target curve start tangent direction. |
| AtEnd | 2 | Match the target curve end tangent direction. |
| AtStartAndEnd | 3 | Match the target curve start and end tangent direction. |