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Add the "Perceptual" and "Classic" families of gradient spaces with OkLab as the new default (#4415)

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* Add an OkLab gradient interpolation space and make it the new default

* Fix the Properties panel fill row resetting the gradient interpolation space to the default

* Add OkLch, Lab, LCh, and HSL gradient interpolation spaces

* Add a hue direction attribute and picker choice for polar gradient interpolation spaces

* Add an HSV gradient interpolation space

* Rename the sRGB Linear and sRGB Gamma gradient spaces to RGB Linear and RGB Gamma

* Divide the gradient interpolation dropdown between absolute and relative color spaces

* Rename the OkLch gradient interpolation space to OkLCh for channel-notation capitalization

* Shorten the color picker popover's hue direction row label to Arc

* Call the Gradient Interpolation node's parameter Space and extend the picker tooltip title to match

* Rename the gradient interpolation attribute and type family to gradient space

* Rename the gradient tool's gradient space transform to gradient to viewport transform

* Add serde aliases and a node replacement covering the gradient space renames

* Give the gradient space choices artist-facing labels and reorder the dropdown sections

* Add a Gradient Hue Direction node and its attribute read node

* Say interpolate instead of blend for gradient stop color traversal in docs and tooltips

* Label the polar perceptual gradient spaces as Perceptual Hue and group the dropdown sections by geometry

* Add a migration alias covering the gradient space attribute reader rename

* Carry the gradient hue direction attribute through boolean operations

* Register GradientHueDirection wire types in the node registry
This commit is contained in:
Keavon Chambers
2026-08-06 02:40:25 -07:00
committed by GitHub
parent 3f082c881f
commit 461ddbc872
31 changed files with 826 additions and 360 deletions
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5
node-graph/nodes/raster/src/gradient_map.rs
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@@ -23,14 +23,15 @@ async fn gradient_map<T: Adjust<Color> + Send>(
) -> Item<T> {
let mut image = image;
let gradient_spread = gradient.attribute_cloned_or_default::<vector_types::GradientSpread>(core_types::ATTR_GRADIENT_SPREAD);
let gradient_interpolation = gradient.attribute_cloned_or_default::<vector_types::GradientInterpolation>(core_types::ATTR_GRADIENT_INTERPOLATION);
let gradient_space = gradient.attribute_cloned_or_default::<vector_types::GradientSpace>(core_types::ATTR_GRADIENT_SPACE);
let gradient_hue_direction = gradient.attribute_cloned_or_default::<vector_types::GradientHueDirection>(core_types::ATTR_GRADIENT_HUE_DIRECTION);
let gradient = gradient.into_element();
let reverse = reverse.into_element();
image.element_mut().adjust(|color| {
let intensity = color.luminance_rec_709();
let intensity = if reverse { 1. - intensity } else { intensity };
gradient.evaluate(intensity as f64, gradient_spread, gradient_interpolation)
gradient.evaluate(intensity as f64, gradient_spread, gradient_space, gradient_hue_direction)
});
image