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Rework Gradient into a newtype of List<Color> with optional position and midpoint attributes (#4397)

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* Rework Gradient into a newtype of List<Color> with optional position and midpoint attributes

* Fix Vello stopless-gradient fallback coverage, empty legacy gradient tables, the node docs gradient swatch, NaN position elision, and wired setter input overwrites
This commit is contained in:
Keavon Chambers
2026-09-14 12:58:16 +02:00
committed by Dennis Kobert
parent b78e4b107e
commit 86d4106592
36 changed files with 1112 additions and 464 deletions
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node-graph/nodes/raster/src/blending_nodes.rs
+8 -5
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@@ -38,16 +38,19 @@ mod blend_std {
impl Blend<Color> for Gradient {
fn blend(&self, under: &Self, blend_fn: impl Fn(Color, Color) -> Color) -> Self {
let mut combined_stops = self.position.iter().chain(under.position.iter()).copied().collect::<Vec<_>>();
combined_stops.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
let mut combined_stops = self.positions().into_iter().chain(under.positions()).collect::<Vec<_>>();
combined_stops.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
combined_stops.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
let stops = combined_stops.into_iter().map(|position| {
let over_color = self.evaluate(position);
let under_color = under.evaluate(position);
let over_color = self.evaluate(position, Default::default());
let under_color = under.evaluate(position, Default::default());
let color = blend_fn(over_color, under_color);
GradientStop { position, midpoint: 0.5, color }
});
Gradient::new(stops)
let mut gradient = Gradient::new(stops);
gradient.elide_default_attributes();
gradient
}
}
}