# Editor.MapEditor.MapView.BuildRay

```csharp
void BuildRay(out Vector3 startRay, out Vector3 endRay)
```

Builds a ray from the mouse cursor

### Parameters

- `out startRay` (`Vector3`)
- `out endRay` (`Vector3`)

Declared in [Editor.MapEditor.MapView](/api/Editor.MapEditor.MapView).
Assembly: `Sandbox.Tools`.