# isDistanceEnabled A Boolean value that specifies whether generated noise values incorporate the distance from each point to the nearest seed point. ``` var isDistanceEnabled: Bool { get set } ``` ## Discussion A Voronoi noise source generates a field of noise values by randomly picking seed points at random positions in a space, then dividing the space into cells so that all the points in a cell are closer to that cell’s seed point than to any other seed point. After dividing space into cells, the noise source randomly assigns a unique value to each. If this property’s value is (the default), all points within a cell have the same value, creating a crystalline appearance. If this property’s value is , the noise source adds to each point’s value the distance from that point to the nearest seed point. With a low value for the [`displacement`](/documentation/GameplayKit/GKVoronoiNoiseSource/displacement) property, adding distance to noise can create textures like cracked mud; with a high displacement value, adding distance creates textures like bubbling liquid. --- 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)