# RotationAxis3DFloat A 3D axis. ``` struct RotationAxis3DFloat ``` ## Topics ### Initializers [`init()`](/documentation/Spatial/RotationAxis3DFloat/init()) [`init(simd_float3)`](/documentation/Spatial/RotationAxis3DFloat/init(_:)-3r5wd) Returns a new rotation axis from a single-precision vector. [`init(simd_double3)`](/documentation/Spatial/RotationAxis3DFloat/init(_:)-4n1ej) Returns a new rotation axis from a double-precision vector. [`init(Vector3DFloat)`](/documentation/Spatial/RotationAxis3DFloat/init(_:)-4q4aa) Returns a new rotation axis from a Spatial vector. [`init(RotationAxis3D)`](/documentation/Spatial/RotationAxis3DFloat/init(_:)-6c919) Returns a single-precision rotation axis from a double-precision rotation axis. [`init(simd_packed_float4)`](/documentation/Spatial/RotationAxis3DFloat/init(_:)-72zxm) Creates a Spatial rotation axis from a simd packed vector. [`init(vector: simd_float3)`](/documentation/Spatial/RotationAxis3DFloat/init(vector:)) [`init(x: Float, y: Float, z: Float)`](/documentation/Spatial/RotationAxis3DFloat/init(x:y:z:)-273jp) Returns a rotation axis from the specified values. [`init(x: T, y: T, z: T)`](/documentation/Spatial/RotationAxis3DFloat/init(x:y:z:)-hx2) Returns a new rotation axis from the floating-point values. ### Instance Properties [`var vector: simd_float3`](/documentation/Spatial/RotationAxis3DFloat/vector) [`var x: Float`](/documentation/Spatial/RotationAxis3DFloat/x-swift.property) The x-axis value. [`var y: Float`](/documentation/Spatial/RotationAxis3DFloat/y-swift.property) The y-axis value. [`var z: Float`](/documentation/Spatial/RotationAxis3DFloat/z-swift.property) The z-axis value. ### Type Properties [`static let x: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/x-swift.type.property) The x-axis, expressed in unit coordinates. [`static let xy: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/xy) The xy-axis, expressed in unit coordinates. [`static let xyz: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/xyz) The xyz-axis, expressed in unit coordinates. [`static let xz: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/xz) The xz-axis, expressed in unit coordinates. [`static let y: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/y-swift.type.property) The y-axis, expressed in unit coordinates. [`static let yz: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/yz) The yz-axis, expressed in unit coordinates. [`static let z: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/z-swift.type.property) The z-axis, expressed in unit coordinates. [`static let zero: RotationAxis3DFloat`](/documentation/Spatial/RotationAxis3DFloat/zero) A 3D axis. ### Default Implementations [CustomReflectable Implementations](/documentation/Spatial/RotationAxis3DFloat/CustomReflectable-Implementations) [Decodable Implementations](/documentation/Spatial/RotationAxis3DFloat/Decodable-Implementations) [Encodable Implementations](/documentation/Spatial/RotationAxis3DFloat/Encodable-Implementations) [Equatable Implementations](/documentation/Spatial/RotationAxis3DFloat/Equatable-Implementations) [Hashable Implementations](/documentation/Spatial/RotationAxis3DFloat/Hashable-Implementations) ## Relationships ### Conforms To [`Decodable`](/documentation/Swift/Decodable) [`CustomReflectable`](/documentation/Swift/CustomReflectable) [`Hashable`](/documentation/Swift/Hashable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Escapable`](/documentation/Swift/Escapable) [`Copyable`](/documentation/Swift/Copyable) [`Equatable`](/documentation/Swift/Equatable) [`Encodable`](/documentation/Swift/Encodable) [`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible) [`Sendable`](/documentation/Swift/Sendable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)