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New node: Sample Gradient

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This commit is contained in:
Keavon Chambers
2025-04-12 04:19:46 -07:00
parent c156c0a4ce
commit a8a5a1f3fd
3 changed files with 34 additions and 11 deletions
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33
node-graph/gcore/src/ops.rs
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@@ -1,7 +1,7 @@
use crate::Ctx;
use crate::raster::BlendMode;
use crate::raster::image::ImageFrameTable;
use crate::registry::types::Percentage;
use crate::registry::types::{Fraction, Percentage};
use crate::vector::style::GradientStops;
use crate::{Color, Node};
use core::marker::PhantomData;
@@ -412,6 +412,37 @@ fn color_value(_: impl Ctx, _primary: (), #[default(Color::BLACK)] color: Option
color
}
// // Aims for interoperable compatibility with:
// // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=%27grdm%27%20%3D%20Gradient%20Map
// // https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#:~:text=Gradient%20settings%20(Photoshop%206.0)
// #[node_macro::node(category("Raster: Adjustment"))]
// async fn gradient_map<T: Adjust<Color>>(
// _: impl Ctx,
// #[implementations(
// Color,
// ImageFrameTable<Color>,
// GradientStops,
// )]
// mut image: T,
// gradient: GradientStops,
// reverse: bool,
// ) -> T {
// image.adjust(|color| {
// let intensity = color.luminance_srgb();
// let intensity = if reverse { 1. - intensity } else { intensity };
// gradient.evaluate(intensity as f64)
// });
// image
// }
/// Gets the color at the specified position along the gradient, given a position from 0 (left) to 1 (right).
#[node_macro::node(category("General"))]
fn sample_gradient(_: impl Ctx, _primary: (), gradient: GradientStops, position: Fraction) -> Color {
let position = position.clamp(0., 1.);
gradient.evaluate(position)
}
/// Constructs a gradient value which may be set to any sequence of color stops to represent the transition between colors.
#[node_macro::node(category("Value"))]
fn gradient_value(_: impl Ctx, _primary: (), gradient: GradientStops) -> GradientStops {