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# USDValue.Quatd

```
@frozen struct Quatd
```

## Topics

### Initializers

[`init()`](/documentation/USDKit/USDValue/Quatd/init())

Creates a zero quaternion.

[`init(real: Double, imaginary: USDValue.Vec3d)`](/documentation/USDKit/USDValue/Quatd/init(real:imaginary:))

Creates a quaternion from real and imaginary components.

### Instance Properties

[`var imaginary: USDValue.Vec3d`](/documentation/USDKit/USDValue/Quatd/imaginary)

The imaginary (vector) component.

[`var real: Double`](/documentation/USDKit/USDValue/Quatd/real)

The real (scalar) component.

### Type Properties

[`static var identity: USDValue.Quatd`](/documentation/USDKit/USDValue/Quatd/identity)

The identity quaternion `(real: 1, imaginary: (0, 0, 0))`.

[`static var zero: USDValue.Quatd`](/documentation/USDKit/USDValue/Quatd/zero)

The zero quaternion `(0, 0, 0, 0)`.

## Relationships

### Conforms To

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

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

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

[`USDValueProtocol`](/documentation/USDKit/USDValueProtocol)

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

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

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

[`MetadataValue`](/documentation/USDKit/USDStage/Object/MetadataValue)

[`Value`](/documentation/USDKit/USDPrim/Attribute/Value)

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

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

---

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