# init(columns:rows:) Creates a warp geometry grid of a specified size. ``` convenience init(columns cols: Int, rows: Int) ``` ## Parameters `cols` The number of columns in the grid. `rows` The number of rows in the grid. ## Return Value A new warp geometry grid object. ## Discussion Creating a warp geometry grid without explicit source and destination positions automatically generates the required position arrays. For example, a 2 column by 2 row grid would create two arrays containing nine positions each, beginning at `[0,0]` - for the bottom left position - and ending at `[1,1]` - for the top left position. |index: 6, position: [0.0, 1.0]|index: 7, position: [0.5, 1.0]|index: 8, position: [1.0, 1.0]| |------------------------------|------------------------------|------------------------------| |index: 3, position: [0.0, 0.5]|index: 4, position: [0.5, 0.5]|index: 5, position: [1.0, 0.5]| |index: 0, position: [0.0, 0.0]|index: 1, position: [0.5, 0.0]|index: 2, position: [1.0, 0.0]| --- 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)