# rotate(by:) Rotates the entire noise field by the specified x, y, and z angles. ``` func rotate(by radians: vector_double3) ``` ## Parameters `radians` A vector whose x, y, and z components each provide a rotation angle in radians around the corresponding axis in the noise field. ## Discussion A noise field is inherently three-dimensional and infinite in extent; when you create a [`GKNoiseMap`](/documentation/GameplayKit/GKNoiseMap) object from a noise object, the resulting array of noise values is a “slice” of the noise field (through its `z = 0` plane, with a specified size and position). By translating, rotating, and scaling the noise field in 3D before you create a noise map, you can create interesting effects. For example, applying an x- or y-axis rotation to noise generated by a [`GKCylindersNoiseSource`](/documentation/GameplayKit/GKCylindersNoiseSource) object “slices” along the length of the cylinders, creating a wood-grain pattern.  --- 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)