# GeometryExtensionMethods.EvaluateUvDirections examples

Examples for [EvaluateUvDirections](https://developer.rhino3d.com/api/gh2/type/grasshopper2.extensions.geometryextensionmethods/evaluateuvdirections.md) in Grasshopper2.Extensions.GeometryExtensionMethods.

## C#

```cs
using Grasshopper2.Extensions;

// As an extension method
surface.EvaluateUvDirections(uv, out Vector3d u, out Vector3d v);

// As a static method
GeometryExtensionMethods.EvaluateUvDirections(surface, uv, out u, out v);
```

## Python

```python
import clr
clr.AddReference('Grasshopper2')
import Grasshopper2.Extensions
clr.ImportExtensions(Grasshopper2.Extensions)

# As an extension method
u, v = surface.EvaluateUvDirections(uv)

# As a static method
u, v = Grasshopper2.Extensions.GeometryExtensionMethods.EvaluateUvDirections(surface, uv)
```