---
title: VNCircle
framework: vision
role: symbol
role_heading: Class
path: vision/vncircle
---

# VNCircle

An immutable 2D circle represented by its center point and radius.

## Declaration

```swift
class VNCircle
```

## Topics

### Creating a Circle

- [init(center:radius:)](vision/vncircle/init(center:radius:).md)
- [init(center:diameter:)](vision/vncircle/init(center:diameter:).md)
- [zero](vision/vncircle/zero.md)

### Inspecting a Circle

- [center](vision/vncircle/center.md)
- [diameter](vision/vncircle/diameter.md)
- [radius](vision/vncircle/radius.md)
- [contains(_:)](vision/vncircle/contains(_:).md)
- [contains(_:inCircumferentialRingOfWidth:)](vision/vncircle/contains(_:incircumferentialringofwidth:).md)

### Initializers

- [init(coder:)](vision/vncircle/init(coder:).md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Common data types

- [VNVector](vision/vnvector.md)