# Vps2Heading

Source: https://www.nianticspatial.com/docs/api/swift/NSDK.class-Vps2Heading/

Vps2Heading
> inherits from CoreLocation.CLHeading

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## Declaration

final class Vps2Heading

## Summary

A `CLHeading` subclass representing heading data computed by VPS2.
VPS2 derives heading from visual-inertial localization rather than a physical magnetometer,
so the raw magnetometer component values (`x`, `y`, `z`) are zero and not meaningful.

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## Constructors

### Constructor

required init?(coder: NSCoder)

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### Overload

init(trueHeading: CLLocationDirection, headingAccuracy: CLLocationDirection, timestamp: Date = Date())

#### Summary

Creates a Vps2Heading from a VPS2-computed true heading and its accuracy.

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## Properties

| Name | Type | Summary |
| --- | --- | --- |
| override var headingAccuracy | CLLocationDirection | Maximum deviation from the reported heading, in degrees.A negative value indicates the heading is invalid. |
| override var magneticHeading | CLLocationDirection | Heading relative to magnetic north, in degrees.VPS2 does not use a magnetometer, so this mirrors `trueHeading`. |
| override class var supportsSecureCoding | Bool | - |
| override var timestamp | Date | The time at which this heading was determined. |
| override var trueHeading | CLLocationDirection | Heading relative to true north, in degrees. |
| override var x | CLHeadingComponentValue | Raw magnetometer x-component. VPS2 does not use a magnetometer; returns `0`. |
| override var y | CLHeadingComponentValue | Raw magnetometer y-component. VPS2 does not use a magnetometer; returns `0`. |
| override var z | CLHeadingComponentValue | Raw magnetometer z-component. VPS2 does not use a magnetometer; returns `0`. |

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## Methods

| Name | Type | Summary |
| --- | --- | --- |
| override copy | Any | - |
| override encode | void | - |

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## Relationships

conforms to:  Foundation.NSCopying 

conforms to:  Foundation.NSSecureCoding 

conforms to:  Foundation.NSCoding 

conforms to:  ObjectiveC.NSObjectProtocol

conforms to:  Swift.Equatable 

conforms to:  Swift.Hashable 

conforms to:  Swift.CVarArg 

conforms to:  Swift.CustomStringConvertible 

conforms to:  Swift.CustomDebugStringConvertible