# Sandbox.PhysicsBody.AddPlaneShape

```csharp
PhysicsShape AddPlaneShape(Vector3 center, Rotation rotation, Vector2 size, bool rebuildMass = True)
```

Add a plane shape to this body.

### Parameters

- `center` (`Vector3`)
- `rotation` (`Rotation`)
- `size` (`Vector2`)
- `rebuildMass` (`bool`), default `True`

### Returns

`PhysicsShape`

Declared in [Sandbox.PhysicsBody](/api/Sandbox.PhysicsBody).
Assembly: `Sandbox.Engine`.