# init(normal:bias:) Creates a plane shape with the given normal and surface displacement. ``` init(normal: SIMD3, bias: Float) ``` ## Parameters `normal` The normal vector determining the orientation of the plane. `bias` The distance by which the plane’s surface is displaced along its normal. --- 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)