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  "title" : "VNCircle"
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# VNCircle

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

```
class VNCircle
```

## Topics

### Creating a Circle

[`init(center:radius:)`](/documentation/Vision/VNCircle/init(center:radius:))

Creates a circle with the specified center and radius.

[`init(center:diameter:)`](/documentation/Vision/VNCircle/init(center:diameter:))

Creates a circle with the specified center and diameter.

[`init(coder:)`](/documentation/Vision/VNCircle/init(coder:))

[`zero`](/documentation/Vision/VNCircle/zero)

A circle object centered at the origin, with a radius of zero.

### Inspecting a Circle

[`center`](/documentation/Vision/VNCircle/center)

The circle’s center point.

[`diameter`](/documentation/Vision/VNCircle/diameter)

The circle’s diameter.

[`radius`](/documentation/Vision/VNCircle/radius)

The circle’s radius.

[`contains(_:)`](/documentation/Vision/VNCircle/contains(_:))

Determines if this circle, including its boundary, contains the specified point.

[`contains(_:inCircumferentialRingOfWidth:)`](/documentation/Vision/VNCircle/contains(_:inCircumferentialRingOfWidth:))

Determines if a ring around this circle’s circumference contains the specified point.


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