# vDSP.FFT2D A 2D single- and double-precision fast Fourier transform. ``` class FFT2D where T : vDSP_FourierTransformable ``` ## Topics ### Initializers [`init?(width: Int, height: Int, ofType: T.Type)`](/documentation/Accelerate/vDSP/FFT2D/init(width:height:ofType:)) Initializes a new fast Fourier transform instance for 2D FFT. ### Instance Methods [`func transform(input: T, output: inout T, direction: vDSP.FourierTransformDirection)`](/documentation/Accelerate/vDSP/FFT2D/transform(input:output:direction:)) Computes an out-of-place 2D fast Fourier transform. ## Relationships ### Inherits From [`FFT`](/documentation/Accelerate/vDSP/FFT) --- 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)