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Reintroduce input for the node trait

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# Conflicts:
#	node-graph/gcore/src/raster.rs
This commit is contained in:
Dennis
2022-08-10 13:05:57 +02:00
committed by Keavon Chambers
parent 3775aedab1
commit 6b45927a60
6 changed files with 79 additions and 34 deletions
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32
node-graph/gcore/src/raster.rs
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@@ -1,18 +1,40 @@
use core::marker::PhantomData;
use crate::Node;
use crate::{value::ValueNode, Node};
use self::color::Color;
pub mod color;
pub struct GrayscaleNode<'n, N: Node<'n, Output = Color>>(pub N, PhantomData<&'n ()>);
pub struct GrayscaleNode;
impl<'n, N: Node<'n, Output = Color>> Node<'n> for GrayscaleNode<'n, N> {
impl<'n> Node<'n, Color> for GrayscaleNode {
type Output = Color;
fn eval(&'n self) -> Color {
let color = self.0.eval();
fn eval(&'n self, color: Color) -> Color {
let avg = (color.r() + color.g() + color.b()) / 3.0;
Color::from_rgbaf32(avg, avg, avg, color.a()).expect("Grayscale node created an invalid color")
}
}
pub struct ForEachNode<'n, I: Iterator<Item = S>, MN: Node<'n, S>, S>(pub MN, PhantomData<&'n (I, S)>);
impl<'n, I: Iterator<Item = S>, MN: Node<'n, S, Output = ()>, S> Node<'n, I> for ForEachNode<'n, I, MN, S> {
type Output = ();
fn eval(&'n self, input: I) -> Self::Output {
input.for_each(|x| self.0.eval(x))
}
}
pub struct MutWrapper<'n, N: Node<'n, T, Output = T>, T: Clone>(pub N, PhantomData<&'n T>);
impl<'n, T: Clone, N: Node<'n, T, Output = T>> Node<'n, &'n mut T> for MutWrapper<'n, N, T> {
type Output = ();
fn eval(&'n self, value: &'n mut T) {
*value = self.0.eval(value.clone());
}
}
fn foo() {
let map = ForEachNode(MutWrapper(GrayscaleNode, PhantomData), PhantomData);
map.eval(&mut [Color::from_rgbaf32(1.0, 0.0, 0.0, 1.0).unwrap()].iter_mut());
}