# generateBox(size:cornerRadius:) Creates a box mesh from a vector of three scalar values that represent width, height, and depth, respectively, and a radius for the corners. ``` @MainActor @preconcurrency static func generateBox(size: SIMD3, cornerRadius: Float = 0) -> MeshResource ``` ## Parameters `size` The length of the box’s width, height, and depth, in meters, along the x-, y-, and z-axis, respectively. `cornerRadius` The radius of each corner’s circular arc, in meters. Values for `cornerRadius` can be, at most, equal to `min(size.x, size.y, size.z) / 2.0`. For example, if the box’s dimensions are `3.0` x `4.0` x `5.0`, the corner radius needs to be in the range `[0.0, 1.5]`. ## Discussion The method centers the box at the entity’s origin and aligns the box’s faces with the coordinate system’s axes. > Note: The method clamps `cornerRadius` so that it doesn’t exceed half > the length of the box’s smallest dimension. --- 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)