# Vector3.VectorPlaneProject

```csharp
static Vector3 VectorPlaneProject(in Vector3 v, in Vector3 planeNormal)
```

Projects given vector on a plane defined by `planeNormal`.

### Parameters

- `in v` (`Vector3`): The vector to project.
- `in planeNormal` (`Vector3`): Normal of a plane to project onto.

### Returns

`Vector3`: The projected vector.

Declared in [Vector3](/api/Vector3).
Assembly: `Sandbox.System`.