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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
2026-08-03 04:05:02 -07:00
committed by GitHub
parent e52a442504
commit 2f24459344
34 changed files with 1121 additions and 475 deletions
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node-graph/nodes/graphic/src/graphic.rs
+2 -40
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@@ -10,7 +10,7 @@ use rand::seq::SliceRandom;
use raster_types::{CPU, GPU, Raster};
use std::cmp::Ordering;
use vector_types::gradient::{GradientSpreadMethod, GradientType};
use vector_types::{Gradient, GradientStop, ReferencePoint};
use vector_types::{Gradient, ReferencePoint};
/// Returns the list with the item at the specified index removed.
/// If no value exists at that index, the list is returned unchanged.
@@ -1009,45 +1009,7 @@ pub async fn flatten_gradient<T: IntoGraphicList>(_: impl Ctx, #[implementations
/// Constructs a gradient from a `Color[]`, where the colors are evenly distributed as gradient stops across the range from 0 to 1.
#[node_macro::node(category("Color"), name("Colors to Gradient"))]
fn colors_to_gradient<T: IntoGraphicList>(_: impl Ctx, #[implementations(List<Graphic>, List<Color>)] colors: T) -> Item<Gradient> {
let colors = colors.into_flattened_list::<Color>();
let total_colors = colors.len();
if total_colors == 0 {
return Item::new_from_element(Gradient::new(vec![
GradientStop {
position: 0.,
midpoint: 0.5,
color: Color::BLACK,
},
GradientStop {
position: 1.,
midpoint: 0.5,
color: Color::BLACK,
},
]));
}
if let (1, Some(&single_color)) = (total_colors, colors.element(0)) {
return Item::new_from_element(Gradient::new(vec![
GradientStop {
position: 0.,
midpoint: 0.5,
color: single_color,
},
GradientStop {
position: 1.,
midpoint: 0.5,
color: single_color,
},
]));
}
let colors = colors.into_iter().enumerate().map(|(index, row)| GradientStop {
position: index as f64 / (total_colors - 1) as f64,
midpoint: 0.5,
color: row.into_element(),
});
Item::new_from_element(Gradient::new(colors))
Item::new_from_element(Gradient::from(colors.into_flattened_list::<Color>()))
}
#[cfg(test)]