StratoSDK is a framework with a declarative approach similar to Flutter/React, written and designed entirely for Rust.
| 1 | use super::*; |
| 2 | |
| 3 | #[test] |
| 4 | fn test_subpixel_alignment_computation() { |
| 5 | { |
| 6 | // Default case - a non-fractional offset should have an alignment |
| 7 | // value of zero. |
| 8 | let pos = vec2f(0., 0.); |
| 9 | let alignment = SubpixelAlignment::new(pos); |
| 10 | assert_eq!(alignment.0, 0); |
| 11 | } |
| 12 | { |
| 13 | // 0.1 rounds down to 0 (not up to 0.33 -> 1) |
| 14 | let pos = vec2f(0.1, 0.); |
| 15 | let alignment = SubpixelAlignment::new(pos); |
| 16 | assert_eq!(alignment.0, 0); |
| 17 | } |
| 18 | { |
| 19 | // y-position doesn't affect computation |
| 20 | let pos = vec2f(0.1, 0.33); |
| 21 | let alignment = SubpixelAlignment::new(pos); |
| 22 | assert_eq!(alignment.0, 0); |
| 23 | } |
| 24 | { |
| 25 | // 0.2 rounds up to 0.33 -> 1 |
| 26 | let pos = vec2f(0.2, 0.); |
| 27 | let alignment = SubpixelAlignment::new(pos); |
| 28 | assert_eq!(alignment.0, 1); |
| 29 | } |
| 30 | { |
| 31 | // 0.66 doesn't round, and converts to 2 |
| 32 | let pos = vec2f(0.66, 0.); |
| 33 | let alignment = SubpixelAlignment::new(pos); |
| 34 | assert_eq!(alignment.0, 2); |
| 35 | } |
| 36 | { |
| 37 | // 0.9 rounds up to 1.0 -> 0 |
| 38 | let pos = vec2f(0.9, 0.); |
| 39 | let alignment = SubpixelAlignment::new(pos); |
| 40 | assert_eq!(alignment.0, 0); |
| 41 | } |
| 42 | } |
| 43 |