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Add a gradient interpolation attribute with Stepped, Linear (existing), and Smooth modes (#4418)

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* Delete dead code function

* Add a Gradient Interpolation axis with Stepped, Linear, and Smooth paths through the stops

* Keep the gradient interpolation attached when dragging stops in the picker

* Give the gradient popover's dropdowns the same tooltips as their row labels

* Order the gradient popover with Intrp. above Space

* Hold gradient stops in place when the cyclic flag is toggled

* Fix wrong Smooth gradient colors around stops sitting on the ramp boundaries

* Consolidate gradient settings plumbing and fix bugs

* Bundle whole-ramp gradient settings into GradientSettings across the editor plumbing

* Name the Smooth gradient interpolation's spline type in its tooltip

* Linearize the gamma hex stop colors recovered from imported Graphite SVGs

* Code review

* Aim the Smooth bake's seam subdivision at the copied boundary color

* Add GradientEvaluator to build gradient sampling state once per loop instead of per sample

* Correct the gradient evaluator's documented setup cost to O(n log n)
This commit is contained in:
Keavon Chambers
2026-08-07 16:43:36 -07:00
committed by GitHub
parent 4b01abe36d
commit 681b4033f5
27 changed files with 1560 additions and 734 deletions
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18
node-graph/nodes/vector/src/vector_nodes.rs
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@@ -3,7 +3,7 @@ use core::f64::consts::{PI, TAU};
use core::hash::{Hash, Hasher};
use core_types::blending::BlendMode;
use core_types::bounds::{BoundingBox, RenderBoundingBox};
use core_types::list::{ATTR_FILL, ATTR_GRADIENT_CYCLIC, ATTR_GRADIENT_HUE_DIRECTION, ATTR_GRADIENT_SPACE, ATTR_STROKE, Item, ItemAttributeValues, List, ListDyn, NodeIdPath};
use core_types::list::{ATTR_FILL, ATTR_STROKE, Item, ItemAttributeValues, List, ListDyn, NodeIdPath};
use core_types::registry::types::{Angle, Length, Multiplier, Percentage, PixelLength, Progression, SeedValue};
use core_types::transform::{Footprint, Transform};
use core_types::uuid::NodeId;
@@ -32,7 +32,7 @@ use vector_types::vector::misc::{
CentroidType, ExtrudeJoiningAlgorithm, HandleId, InterpolationDistribution, MergeByDistanceAlgorithm, PointSpacingType, RowsOrColumns, bezpath_from_manipulator_groups,
bezpath_to_manipulator_groups, handles_to_segment, is_linear, point_to_dvec2, segment_to_handles,
};
use vector_types::vector::style::{DashPattern, Gradient, GradientHueDirection, GradientSpace, PaintOrder, Stroke, StrokeAlign, StrokeCap, StrokeJoin};
use vector_types::vector::style::{DashPattern, Gradient, GradientSettings, PaintOrder, Stroke, StrokeAlign, StrokeCap, StrokeJoin};
use vector_types::vector::{FillId, PointId, RegionId, SegmentDomain, SegmentId, StrokeId, VectorExt};
use vector_types::vector::{PointDomain, RegionDomain};
@@ -141,11 +141,14 @@ where
let mut content = content;
let length = content.vector_count();
let gradient_space = gradient.attribute_cloned_or_default::<GradientSpace>(ATTR_GRADIENT_SPACE);
let gradient_cyclic = gradient.attribute_cloned_or_default::<bool>(ATTR_GRADIENT_CYCLIC);
let gradient_hue_direction = gradient.attribute_cloned_or_default::<GradientHueDirection>(ATTR_GRADIENT_HUE_DIRECTION);
// The factor spans 0..=1, so the spread deliberately stays Pad (Repeat would wrap the final element onto the first stop's color)
let settings = GradientSettings {
spread: Default::default(),
..GradientSettings::from(&gradient)
};
let element = gradient.into_element();
let gradient = if reverse { element.reversed(gradient_cyclic) } else { element };
let gradient = if reverse { element.reversed(settings.cyclic) } else { element };
let evaluator = gradient.evaluator(settings);
let mut rng = rand::rngs::StdRng::seed_from_u64(seed.into());
@@ -161,8 +164,7 @@ where
},
};
// The factor spans 0..=1 inclusively, so the spread deliberately stays Pad (Repeat would wrap the final element onto the first stop's color)
let color = gradient.evaluate(factor, Default::default(), gradient_cyclic, gradient_space, gradient_hue_direction);
let color = evaluator.evaluate(factor);
let paint = List::new_from_element(color).into_graphic_list();
if fill {