# spatialOverlay(alignment:content:) Adds secondary views within the 3D bounds of this view. ``` @export(implementation) nonisolated func spatialOverlay(alignment: Alignment3D = .center, @ContentBuilder content: () -> V) -> some View where V : View ``` ## Parameters `alignment` The alignment with a default value of [`center`](/documentation/SwiftUI/Alignment3D/center) that you use to position the secondary view. `content` The content builder which produces views to occupy the same 3D space as this view. Multiple views provided by content are organized into a [`SpatialContainer`](/documentation/SwiftUI/SpatialContainer). ## Return Value A view that adds `content` within the view’s 3D bounds. ## Discussion Multiple views provided by `content` are stacked depthwise. --- 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)