# init(center:fullExtents:) Creates a bounding box with the given center and full extents, with a circumscribed sphere. ``` init(center: SIMD3, fullExtents: SIMD3) ``` ## Parameters `center` The center of the bounding box in model space. `fullExtents` The full extents of the bounding box along each axis. --- 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)