# Sandbox.PhysicsTraceBuilder.RunAgainstBBox

```csharp
PhysicsTraceResult RunAgainstBBox(in BBox box, in Transform transform)
```

Traces only against the given bounding box at the specified transform.

### Parameters

- `in box` (`BBox`): The bounding box to test against.
- `in transform` (`Transform`): Transform applied to the box.

### Returns

`PhysicsTraceResult`: The trace result.

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