<!--
{
  "availability" : [
    "iOS: 8.0.0 - 26.0.0",
    "iPadOS: 8.0.0 - 26.0.0",
    "macCatalyst: 13.1.0 - 26.0.0",
    "macOS: 10.8.0 - 26.0.0",
    "tvOS: 9.0.0 - 26.0.0",
    "visionOS: 1.0.0 - 26.0.0",
    "watchOS: 3.0.0 - 26.0.0"
  ],
  "documentType" : "symbol",
  "framework" : "SceneKit",
  "identifier" : "/documentation/SceneKit/SCNPhysicsField/scope",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "SceneKit"
    ],
    "preciseIdentifier" : "c:objc(cs)SCNPhysicsField(py)scope"
  },
  "title" : "scope"
}
-->

# scope

The area affected by the field, either inside or outside its region.

```
var scope: SCNPhysicsFieldScope { get set }
```

## Discussion

First, define a field’s region using its [`halfExtent`](/documentation/SceneKit/SCNPhysicsField/halfExtent) property and the [`position`](/documentation/SceneKit/SCNNode/position) property of the node containing the field. Then, use the [`scope`](/documentation/SceneKit/SCNPhysicsField/scope) property to choose whether the field’s area of effect is the interior of the region (the default) or all space outside the region.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)