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# SCNPhysicsFieldScope

Options for defining the region of space affected by a physics field, used by the [`scope`](/documentation/SceneKit/SCNPhysicsField/scope) property.

```
enum SCNPhysicsFieldScope
```

## Overview

You define a region of space for a field using the position of the node containing the field and the field’s [`halfExtent`](/documentation/SceneKit/SCNPhysicsField/halfExtent) and [`usesEllipsoidalExtent`](/documentation/SceneKit/SCNPhysicsField/usesEllipsoidalExtent) properties. Then, you use the [`scope`](/documentation/SceneKit/SCNPhysicsField/scope) property to choose whether the field’s area of effect is the interior of this region or whether it is the entirety of scene space excluding this region.

## Topics

### Constants

[`SCNPhysicsFieldScopeInsideExtent`](/documentation/SceneKit/SCNPhysicsFieldScope/insideExtent)

The field’s effect applies only to objects within the region of space defined by its position and extent.

[`SCNPhysicsFieldScopeOutsideExtent`](/documentation/SceneKit/SCNPhysicsFieldScope/outsideExtent)

The field’s effect applies only to objects outside the region of space defined by its position and extent.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Sendable`](/documentation/Swift/Sendable)

---

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