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# UIDynamicItemCollisionBoundsType

Constants that indicate the shape of the item’s collision bounds.

```
enum UIDynamicItemCollisionBoundsType
```

## Topics

### Constants

[`UIDynamicItemCollisionBoundsTypeRectangle`](/documentation/UIKit/UIDynamicItemCollisionBoundsType/rectangle)

Rectangular collision bounds.

[`UIDynamicItemCollisionBoundsTypeEllipse`](/documentation/UIKit/UIDynamicItemCollisionBoundsType/ellipse)

Elliptical collision bounds. The shape of the ellipse is determined by the width and height of the item’s [`bounds`](/documentation/UIKit/UIDynamicItem/bounds) property.

[`UIDynamicItemCollisionBoundsTypePath`](/documentation/UIKit/UIDynamicItemCollisionBoundsType/path)

Path-based collision bounds. For this type, the shape is a [`UIBezierPath`](/documentation/UIKit/UIBezierPath) object stored in the item’s [`collisionBoundingPath`](/documentation/UIKit/UIDynamicItem/collisionBoundingPath) property. See the description of that property for information about how to configure the path itself.

## Relationships

### Conforms To

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

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

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

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

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

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

---

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