INNER CODE UNIT · Rust
dices_sprites_into_atlases_and_meshes
elringus/sprite-dicing · crates/abi/src/lib.rs:323
fn dices_sprites_into_atlases_and_meshes() {
let pixels = [RED, BLUE, BLUE, RED];
let sprites = [sprite(c"sprite", &pixels, 2, 2)];
let result = dice(&sprites, &prefs());
assert_eq!(error(&result), None);
assert_eq!(result.atlas_count, 1);
assert_eq!(result.sprite_count, 1);
let atlas = unsafe { &*result.atlases };
let count = pixel_count(atlas.width, atlas.height);
let atlas_pixels = unsafe { to_slice(atlas.pixels, count) }.unwrap();
assert!(atlas_pixels.contains(&RED));
assert!(atlas_pixels.contains(&BLUE));
let sprite = unsafe { &*result.sprites };
assert_eq!(unsafe { to_str(sprite.id) }, Some("sprite"));
assert_eq!(sprite.atlas_index, 0);
assert!(sprite.vertex_count > 0 && sprite.vertex_count % 4 == 0);