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bevy/examples/ui
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ickshonpe 5ea0e4004f
HSL and HSV interpolation for UI gradients (#19992) 
# Objective

Add interpolation in HSL and HSV colour spaces for UI gradients.

## Solution
Added new variants to `InterpolationColorSpace`: `Hsl`, `HslLong`,
`Hsv`, and `HsvLong`, along with mix functions to the `gradients` shader
for each of them.

#### Limitations
* Didn't include increasing and decreasing path support, it's not
essential and can be done in a follow up if someone feels like it.

* The colour conversions should really be performed before the colours
are sent to the shader but it would need more changes and performance is
good enough for now.

## Testing

```cargo run --example gradients```
2025-07-07 20:08:51 +00:00
..
borders.rs separate border colors (#18682) 2025-05-26 16:57:13 +00:00
box_shadow.rs Upgrade to Rust 1.88 (#19825) 2025-06-26 19:38:19 +00:00
button.rs Color interpolation in OKLab, OKLCH spaces for UI gradients (#19330) 2025-06-21 15:06:35 +00:00
core_widgets_observers.rs Change core widgets to use callback enum instead of option (#19855) 2025-07-01 03:23:38 +00:00
core_widgets.rs Set checkbox and radio fill color to gray when disabled in core widgets example (#19792) 2025-07-02 23:55:58 +00:00
directional_navigation.rs Upgrade to Rust 1.88 (#19825) 2025-06-26 19:38:19 +00:00
display_and_visibility.rs Rename JustifyText to Justify (#19522) 2025-06-09 19:59:48 +00:00
feathers.rs Feathers toggle switches. (#19928) 2025-07-03 01:09:31 +00:00
flex_layout.rs Relationships (non-fragmenting, one-to-many) (#17398) 2025-01-18 22:20:30 +00:00
font_atlas_debug.rs Upgrade to Rust Edition 2024 (#17967) 2025-02-24 03:54:47 +00:00
ghost_nodes.rs separate border colors (#18682) 2025-05-26 16:57:13 +00:00
gradients.rs HSL and HSV interpolation for UI gradients (#19992) 2025-07-07 20:08:51 +00:00
grid.rs Relationships (non-fragmenting, one-to-many) (#17398) 2025-01-18 22:20:30 +00:00
overflow_clip_margin.rs separate border colors (#18682) 2025-05-26 16:57:13 +00:00
overflow_debug.rs Specialized UI transform (#16615) 2025-06-09 19:05:49 +00:00
overflow.rs separate border colors (#18682) 2025-05-26 16:57:13 +00:00
relative_cursor_position.rs Specialized UI transform (#16615) 2025-06-09 19:05:49 +00:00
render_ui_to_texture.rs Rename TargetCamera to UiTargetCamera (#17403) 2025-01-19 19:56:57 +00:00
scroll.rs Newtyped ScrollPosition (#19881) 2025-07-01 17:41:48 +00:00
scrollbars.rs Newtyped ScrollPosition (#19881) 2025-07-01 17:41:48 +00:00
size_constraints.rs Event Split: Event, EntityEvent, and BufferedEvent (#19647) 2025-06-15 16:46:34 +00:00
stacked_gradients.rs Color interpolation in OKLab, OKLCH spaces for UI gradients (#19330) 2025-06-21 15:06:35 +00:00
tab_navigation.rs Upgrade to Rust 1.88 (#19825) 2025-06-26 19:38:19 +00:00
text_background_colors.rs Rename JustifyText to Justify (#19522) 2025-06-09 19:59:48 +00:00
text_debug.rs Rename JustifyText to Justify (#19522) 2025-06-09 19:59:48 +00:00
text_wrap_debug.rs Rename JustifyText to Justify (#19522) 2025-06-09 19:59:48 +00:00
text.rs Rename JustifyText to Justify (#19522) 2025-06-09 19:59:48 +00:00
transparency_ui.rs Merge Style properties into Node. Use ComputedNode for computed properties. (#15975) 2024-10-18 22:25:33 +00:00
ui_material.rs ui_material example webgl2 fix (#17852) 2025-02-13 20:52:26 +00:00
ui_scaling.rs Rename Timer::finished and Timer::paused to is_finished and is_paused (#19386) 2025-05-27 22:24:18 +00:00
ui_texture_atlas_slice.rs BorderRect maintenance (#16727) 2024-12-12 04:33:44 +00:00
ui_texture_atlas.rs UiImage -> ImageNode, UiImageSize -> ImageNodeSize (#16271) 2024-11-07 21:52:58 +00:00
ui_texture_slice_flip_and_tile.rs BorderRect maintenance (#16727) 2024-12-12 04:33:44 +00:00
ui_texture_slice.rs BorderRect maintenance (#16727) 2024-12-12 04:33:44 +00:00
ui_transform.rs Specialized UI transform (#16615) 2025-06-09 19:05:49 +00:00
viewport_debug.rs separate border colors (#18682) 2025-05-26 16:57:13 +00:00
viewport_node.rs Event Split: Event, EntityEvent, and BufferedEvent (#19647) 2025-06-15 16:46:34 +00:00
window_fallthrough.rs Split CursorOptions off of Window (#19668) 2025-06-17 20:20:13 +00:00
z_index.rs Updated comment: ZIndex::Local(0) -> ZIndex(0). (#16585) 2024-12-01 20:09:09 +00:00