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Fix gradient colors (#2719)

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Sébastien d'Herbais de Thun 2023-11-20 18:20:26 +01:00 committed by GitHub
parent 9b5b3b2557
commit 96f02960a2
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1 changed files with 9 additions and 1 deletions
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10
crates/typst-pdf/src/color.rs
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@ -439,7 +439,15 @@ impl ColorSpaceExt for ColorSpace {
// The oklab color space is in the range -0.4..0.4 // The oklab color space is in the range -0.4..0.4
// Also map the angle range of HSV/HSL to 0..1 instead of 0..360 // Also map the angle range of HSV/HSL to 0..1 instead of 0..360
let [x, y, z] = match self { let [x, y, z] = match self {
Self::Oklab => [x, y + 0.4, z + 0.4], Self::Oklab => {
let [l, c, h, _] = color.to_oklch().to_vec4();
// Clamp on Oklch's chroma, not Oklab's a\* and b\* as to not distort hue.
let c = c.clamp(0.0, 0.5);
// Convert cylindrical coordinates back to rectangular ones.
let a = c * h.to_radians().cos();
let b = c * h.to_radians().sin();
[l, a + 0.5, b + 0.5]
}
Self::Hsv | Self::Hsl => [x / 360.0, y, z], Self::Hsv | Self::Hsl => [x / 360.0, y, z],
_ => [x, y, z], _ => [x, y, z],
}; };