# forceSource

> The source which is used to calculate the centroid point of the effector. The distance from the target is defined from this point.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public EffectorSelection2D forceSource { get; set; }
```