Unlucky Launcher v0.2.1
Single-commit source snapshot of the v0.2.1 release.
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//! `card_neutral` 测试组共用的帮手:改前路径的复原、模式列表、色相环距离。
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//!
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//! 拆成子模块是为了单文件 ≤400 行的纪律(`card_neutral.rs` 是 crate 根,`common` / `dump`
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//! 只是它的子模块;cargo 只把 `tests/card_neutral.rs` 当一个 test target)。
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use unlucky_design::color::{Palettes, Scheme, SchemeFlavor};
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use unlucky_design::palette::Card;
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/// 改前的路径(M87 及之前):中性调色板跟着种子染色(官方 TonalSpot)。
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///
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/// 产品代码已经不用它了,但公开 API 仍在(取色路径就靠它逐色染色),所以这里能原样复现「改前」。
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pub fn before_d43(card: Card, flavor: SchemeFlavor) -> Scheme {
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Scheme::from_palettes(
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&Palettes::from_seed_with_neutral_chroma(card.seed, card.neutral_chroma),
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flavor,
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)
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}
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pub fn flavors() -> [SchemeFlavor; 2] {
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[SchemeFlavor::Light, SchemeFlavor::Dark]
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}
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/// 色相环上的最短距离(度)。
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pub fn hue_gap(a: f64, b: f64) -> f64 {
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let raw = (a - b).abs();
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raw.min(360.0 - raw)
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}
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