# isGeodesic A Boolean value specifying whether SceneKit uses a geodesic polygon mesh to render the sphere. ``` var isGeodesic: Bool { get set } ``` ## Discussion The default value is , specifying that SceneKit constructs a sphere mesh using a rectangular grid, like the lines of latitude and longitude on a globe of the Earth. This type of sphere mesh is efficient for most uses, but can cause texture distortion in the areas near its poles. A value of specifies that SceneKit constructs a sphere mesh by successively subdividing an icosahedron, creating a grid of uniformly sized triangles across the entire surface of the sphere, as shown below.  --- 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)