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https://github.com/storytold/effectcraft.git
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vangel76andClaude Sonnet 5.5
f11792827e
Guides can store a percent of the comp so they follow comp-size changes (View > Add Percentage Guide, Convert Guides to Percentage / Pixels); an effect instance has an optional colour label (effect.setLabel, Effect Controls header bar and Label menu). Both are serde-defaulted, so old projects load. Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
1142 lines
45 KiB
Rust
1142 lines
45 KiB
Rust
//! Composition viewer maths shared by the frontends and tests: snapping (targets, tolerance and
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//! priority), the Show Channel / Exposure display transforms, and the viewer snapshot.
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//!
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//! Nothing here touches the project; edits go through commands.
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use std::collections::HashMap;
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use std::sync::{Arc, Mutex, PoisonError};
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use effectcraft_color::{ColorSpace, space};
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use effectcraft_geom::{Mat3, vec2};
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use effectcraft_keyframe::Value;
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use effectcraft_project::{Layer, LayerId, Property};
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use effectcraft_raster::Image;
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use effectcraft_render::{EvalCtx, ExprHost};
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use effectcraft_time::Tick;
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use serde::{Deserialize, Serialize};
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// ---------------------------------------------------------------- snapping
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/// What a snap target is: a point (snaps both axes) or an axis-aligned line.
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#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
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pub enum SnapKind {
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Point,
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/// A vertical line at `pos[0]` (snaps x only).
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VLine,
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/// A horizontal line at `pos[1]` (snaps y only).
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HLine,
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}
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/// Where a snap target comes from (for feedback: the highlighted box / cross).
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#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
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pub enum SnapSource {
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Layer(LayerId),
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Comp,
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Guide,
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Grid,
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/// A mask or shape path vertex of a layer.
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Vertex(LayerId),
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}
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#[derive(Clone, Copy, Debug, PartialEq, Serialize, Deserialize)]
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pub struct SnapTarget {
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pub kind: SnapKind,
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/// Comp pixels.
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pub pos: [f64; 2],
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/// Lower wins when two targets are equally near (vertices and layer features before
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/// guides, guides before the grid).
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pub priority: u8,
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pub source: SnapSource,
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/// A line's extent along itself (y of a vertical line, x of a horizontal one): a layer's
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/// edge without Snap Edges Extended. `None` runs across the whole comp.
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#[serde(default)]
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pub span: Option<[f64; 2]>,
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}
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impl SnapTarget {
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pub fn point(pos: [f64; 2], priority: u8, source: SnapSource) -> SnapTarget {
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SnapTarget { kind: SnapKind::Point, pos, priority, source, span: None }
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}
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pub fn vline(x: f64, priority: u8, source: SnapSource) -> SnapTarget {
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SnapTarget { kind: SnapKind::VLine, pos: [x, 0.0], priority, source, span: None }
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}
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pub fn hline(y: f64, priority: u8, source: SnapSource) -> SnapTarget {
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SnapTarget { kind: SnapKind::HLine, pos: [0.0, y], priority, source, span: None }
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}
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/// The line limited to `span` (`None`: across the comp).
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pub fn within(self, span: Option<[f64; 2]>) -> SnapTarget {
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SnapTarget { span: span.map(|[a, b]| [a.min(b), a.max(b)]), ..self }
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}
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}
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/// Tools bar ▸ Snapping options, the two After Effects' Snapping menu has: Snap Edges Extended
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/// (layer edges snap along their whole line, beyond the layer's bounds) and Snap to Features in
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/// Collapsed Compositions and Text Layers (the layers inside a precomp layer with Collapse
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/// Transformations on are targets too). Both are on by default. Every layer feature snaps
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/// (corners, edge midpoints, centre, anchor point, mask and shape path points), as in After
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/// Effects.
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#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
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#[serde(default, rename_all = "camelCase")]
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pub struct SnapFeatures {
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pub edges_extended: bool,
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pub collapsed_features: bool,
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}
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impl Default for SnapFeatures {
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fn default() -> Self {
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SnapFeatures { edges_extended: true, collapsed_features: true }
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}
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}
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impl SnapFeatures {
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/// The options in the Tools bar's Snapping menu order: (parameter key, label).
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pub const OPTIONS: [(&'static str, &'static str); 2] =
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[("edgesExtended", "Snap Edges Extended"), ("collapsedFeatures", "Snap to Features in Collapsed Compositions and Text Layers")];
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/// The option called `key` (an [`OPTIONS`](Self::OPTIONS) key).
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pub fn option_mut(&mut self, key: &str) -> Option<&mut bool> {
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Some(match key {
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"edgesExtended" => &mut self.edges_extended,
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"collapsedFeatures" => &mut self.collapsed_features,
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_ => return None,
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})
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}
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pub fn option(mut self, key: &str) -> bool {
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self.option_mut(key).is_some_and(|v| *v)
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}
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}
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/// Priorities of the standard targets.
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pub const PRI_VERTEX: u8 = 0;
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pub const PRI_LAYER: u8 = 1;
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pub const PRI_COMP: u8 = 2;
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pub const PRI_GUIDE: u8 = 3;
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pub const PRI_GRID: u8 = 4;
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/// A snap: move the dragged feature by `delta` (comp pixels); `hits` are the targets it lands on.
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#[derive(Clone, Debug, PartialEq)]
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pub struct Snap {
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pub delta: [f64; 2],
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pub hits: Vec<SnapTarget>,
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/// The snapped feature position.
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pub at: [f64; 2],
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}
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fn better(a: (f64, u8), b: (f64, u8)) -> bool {
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if (a.0 - b.0).abs() < 1e-6 { a.1 < b.1 } else { a.0 < b.0 }
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}
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/// Snap feature points `sources` (comp pixels) to the nearest target within `tol` comp pixels.
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/// A point target snaps both axes and wins when it is at least as near as the best lines;
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/// otherwise the nearest vertical and horizontal lines snap x and y independently. Ties go to
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/// the lower priority value.
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pub fn snap(sources: &[[f64; 2]], targets: &[SnapTarget], tol: f64) -> Option<Snap> {
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let mut best_pt: Option<((f64, u8), [f64; 2], SnapTarget)> = None;
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let mut best_x: Option<((f64, u8), [f64; 2], SnapTarget)> = None;
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let mut best_y: Option<((f64, u8), [f64; 2], SnapTarget)> = None;
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for s in sources {
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for t in targets {
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// (`along`: where the source is along a line, for its span.)
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let (d, slot, along) = match t.kind {
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SnapKind::Point => (((t.pos[0] - s[0]).powi(2) + (t.pos[1] - s[1]).powi(2)).sqrt(), &mut best_pt, 0.0),
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SnapKind::VLine => ((t.pos[0] - s[0]).abs(), &mut best_x, s[1]),
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SnapKind::HLine => ((t.pos[1] - s[1]).abs(), &mut best_y, s[0]),
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};
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if d > tol || t.span.is_some_and(|[a, b]| along < a || along > b) {
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continue;
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}
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let key = (d, t.priority);
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if slot.as_ref().is_none_or(|(k, _, _)| better(key, *k)) {
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*slot = Some((key, *s, *t));
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}
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}
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}
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let line_best = [best_x.map(|b| b.0.0), best_y.map(|b| b.0.0)].into_iter().flatten().fold(f64::INFINITY, f64::min);
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if let Some((k, s, t)) = best_pt
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&& k.0 <= line_best + 1e-9
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{
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return Some(Snap { delta: [t.pos[0] - s[0], t.pos[1] - s[1]], hits: vec![t], at: t.pos });
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}
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if best_x.is_none() && best_y.is_none() {
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return None;
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}
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let mut delta = [0.0; 2];
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let mut hits = vec![];
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let mut at = [f64::NAN; 2];
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if let Some((_, s, t)) = best_x {
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delta[0] = t.pos[0] - s[0];
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at = [t.pos[0], s[1]];
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hits.push(t);
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}
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if let Some((_, s, t)) = best_y {
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delta[1] = t.pos[1] - s[1];
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at = if at[0].is_nan() { [s[0], t.pos[1]] } else { [at[0], t.pos[1]] };
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hits.push(t);
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}
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Some(Snap { delta, hits, at })
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}
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/// Snap features of a layer in comp space: corners, edge midpoints, centre, anchor point and
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/// mask / shape path vertices (no box for layers without bounds).
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pub fn layer_features(ctx: &EvalCtx, layer: &Layer) -> Vec<[f64; 2]> {
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let (m, _) = ctx.layer_to_comp(layer);
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let mut out = layer_box(ctx, layer, &m).map(|b| b.points()).unwrap_or_default();
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out.extend(anchor_feature(ctx, layer, &m));
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out.extend(layer_vertices(ctx, layer));
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out
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}
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/// A layer's content box in comp space: corners (top left, top right, bottom right, bottom
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/// left), edge midpoints (top, right, bottom, left) and centre.
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struct BoxPoints {
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corners: [[f64; 2]; 4],
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mids: [[f64; 2]; 4],
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center: [f64; 2],
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}
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impl BoxPoints {
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/// Corners, edge midpoints and centre.
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fn points(&self) -> Vec<[f64; 2]> {
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self.corners.iter().chain(&self.mids).chain([&self.center]).copied().collect()
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}
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}
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/// A layer's content box (`m`: layer → comp).
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fn layer_box(ctx: &EvalCtx, layer: &Layer, m: &Mat3) -> Option<BoxPoints> {
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let b = effectcraft_render::content_bounds(ctx, layer)?;
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let (cx, cy) = ((b[0] + b[2]) / 2.0, (b[1] + b[3]) / 2.0);
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let c = |x: f64, y: f64| {
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let q = m.apply(vec2(x, y));
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[q.x, q.y]
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};
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Some(BoxPoints {
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corners: [c(b[0], b[1]), c(b[2], b[1]), c(b[2], b[3]), c(b[0], b[3])],
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mids: [c(cx, b[1]), c(b[2], cy), c(cx, b[3]), c(b[0], cy)],
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center: c(cx, cy),
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})
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}
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/// A layer's anchor point (`m`: layer → comp).
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fn anchor_feature(ctx: &EvalCtx, layer: &Layer, m: &Mat3) -> Option<[f64; 2]> {
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let a = ctx.v3(layer, layer.transform()?, "anchor", [0.0; 3]);
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let q = m.apply(vec2(a[0], a[1]));
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Some([q.x, q.y])
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}
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/// Mask and shape-path vertices of a layer in comp space.
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pub fn layer_vertices(ctx: &EvalCtx, layer: &Layer) -> Vec<[f64; 2]> {
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let (m, _) = ctx.layer_to_comp(layer);
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let mut out = vec![];
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if let Some(masks) = layer.masks() {
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for g in masks.groups() {
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if let Some(sp) = g.get("path").map(|pr| ctx.value(layer, pr)).and_then(|v| v.as_path().cloned()) {
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out.extend(sp.vertices.iter().map(|v| {
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let q = m.apply(vec2(v[0], v[1]));
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[q.x, q.y]
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}));
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}
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}
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}
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for (uid, sp) in shape_paths(ctx, layer) {
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let pm = m * effectcraft_render::shapes::item_matrix(ctx, layer, uid).unwrap_or(Mat3::IDENTITY);
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out.extend(sp.vertices.iter().map(|v| {
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let q = pm.apply(vec2(v[0], v[1]));
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[q.x, q.y]
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}));
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}
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out
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}
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/// Shape-layer Path items (uid, evaluated path in the item's group space).
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pub fn shape_paths(ctx: &EvalCtx, layer: &Layer) -> Vec<(u64, effectcraft_keyframe::ShapePath)> {
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let mut out = vec![];
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let Some(c) = layer.props.sub("contents") else { return out };
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fn walk(ctx: &EvalCtx, layer: &Layer, g: &effectcraft_project::PropGroup, out: &mut Vec<(u64, effectcraft_keyframe::ShapePath)>) {
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for sub in g.groups() {
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if sub.match_id == "path"
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&& let Some(sp) = sub.get("path").map(|pr| ctx.value(layer, pr)).and_then(|v| v.as_path().cloned())
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{
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out.push((sub.uid, sp));
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} else if sub.match_id == "group" || sub.match_id == "contents" {
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walk(ctx, layer, sub, out);
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}
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}
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}
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walk(ctx, layer, c, &mut out);
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out
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}
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/// Which target families are on.
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#[derive(Clone, Copy, Debug, Default)]
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pub struct SnapOptions {
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/// Layer and comp targets (the Snapping checkbox, inverted while Cmd/Ctrl is held).
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pub layers: bool,
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pub features: SnapFeatures,
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pub guides: bool,
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pub grid: bool,
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pub grid_spacing: f64,
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}
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type SnapValues = HashMap<(u64, u64, u64, i64), Result<Value, String>>;
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/// Bounds, vertices and transforms can ask for the same expression repeatedly. Share its
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/// value only within this immutable snap query; a new pointer update starts a fresh cache.
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struct SnapExpressions<'a> {
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inner: &'a dyn ExprHost,
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values: Mutex<SnapValues>,
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}
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impl ExprHost for SnapExpressions<'_> {
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fn eval(&self, ctx: &EvalCtx, layer: &Layer, prop: &Property, value: &Value) -> Result<Value, String> {
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let key = (ctx.comp_id.0, layer.id.0, prop.uid, ctx.time.0);
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if let Some(value) = self.values.lock().unwrap_or_else(PoisonError::into_inner).get(&key).cloned() {
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return value;
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}
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// Never hold the lock while evaluating: expressions may query other properties.
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let result = self.inner.eval(ctx, layer, prop, value);
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let mut values = self.values.lock().unwrap_or_else(PoisonError::into_inner);
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if values.len() < 8192 {
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values.insert(key, result.clone());
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}
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result
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}
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fn eval_text_selector(&self, ctx: &EvalCtx, layer: &Layer, prop: &Property, index: usize, total: usize, selector: [f64; 3]) -> Result<[f64; 3], String> {
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self.inner.eval_text_selector(ctx, layer, prop, index, total, selector)
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}
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}
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/// Snap targets of a comp at the context time: other visible layers' features and vertices and
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/// the comp's edges and centre (with `layers`, as the Snapping options allow), and guides and
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/// grid lines (when on). Layers in `exclude` (the dragged ones) are skipped.
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pub fn targets(ctx: &EvalCtx, exclude: &[LayerId], opts: SnapOptions) -> Vec<SnapTarget> {
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let memo = ctx.expr.map(|inner| SnapExpressions { inner, values: Mutex::default() });
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let ctx = EvalCtx { expr: memo.as_ref().map(|h| h as &dyn ExprHost), ..*ctx };
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targets_in(&ctx, exclude, opts)
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}
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fn targets_in(ctx: &EvalCtx, exclude: &[LayerId], opts: SnapOptions) -> Vec<SnapTarget> {
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let comp = ctx.comp;
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let (w, h) = (comp.width as f64, comp.height as f64);
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let f = opts.features;
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let mut out = vec![];
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if opts.layers {
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// The comp's edge and centre lines, along the comp without Snap Edges Extended.
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let (xs, ys) = if f.edges_extended { (None, None) } else { (Some([0.0, w]), Some([0.0, h])) };
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let mut lines = |x: &[f64], y: &[f64]| {
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out.extend(x.iter().map(|x| SnapTarget::vline(*x, PRI_COMP, SnapSource::Comp).within(ys)));
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out.extend(y.iter().map(|y| SnapTarget::hline(*y, PRI_COMP, SnapSource::Comp).within(xs)));
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};
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lines(&[0.0, w], &[0.0, h]);
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lines(&[w / 2.0], &[h / 2.0]);
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out.push(SnapTarget::point([w / 2.0, h / 2.0], PRI_COMP, SnapSource::Comp));
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for l in visible_layers(ctx, exclude) {
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out.extend(layer_targets(ctx, l, true, f));
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}
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}
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if opts.guides {
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for g in &comp.guides {
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let pos = g.px(comp.width, comp.height);
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out.push(if g.vertical { SnapTarget::vline(pos, PRI_GUIDE, SnapSource::Guide) } else { SnapTarget::hline(pos, PRI_GUIDE, SnapSource::Guide) });
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}
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}
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if opts.grid && opts.grid_spacing >= 1.0 {
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let s = opts.grid_spacing;
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let mut x = 0.0;
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while x <= w + 1e-9 && out.len() < 20_000 {
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out.push(SnapTarget::vline(x, PRI_GRID, SnapSource::Grid));
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x += s;
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}
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let mut y = 0.0;
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while y <= h + 1e-9 && out.len() < 40_000 {
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out.push(SnapTarget::hline(y, PRI_GRID, SnapSource::Grid));
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y += s;
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}
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}
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out
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}
|
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/// How deep Snap to Features in Collapsed Compositions looks into nested collapsed precomps.
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const MAX_COLLAPSED_DEPTH: usize = 8;
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/// Visible layers of a comp at the context time: active, eye on, and soloed while any layer is.
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fn visible_layers<'a>(ctx: &EvalCtx<'a>, exclude: &'a [LayerId]) -> impl Iterator<Item = &'a Layer> {
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let comp = ctx.comp;
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let time = ctx.time;
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let any_solo = comp.layers.iter().any(|l| l.switches.solo && l.source.is_av() && l.is_active_at(time));
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comp.layers.iter().filter(move |l| l.is_active_at(time) && l.switches.video && (!any_solo || l.switches.solo) && !exclude.contains(&l.id))
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}
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/// A 2D layer's snap targets: its box points, its edges as lines while unrotated (across the
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/// comp with Snap Edges Extended, along the layer otherwise), its anchor point unless `anchor` is
|
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/// false (Pan Behind drags it, the box stays put), its mask and shape path vertices and, with
|
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/// Snap to Features in Collapsed Compositions, the targets of the visible layers inside a
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/// collapsed precomp layer. None for cameras, lights and 3D layers.
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pub fn layer_targets(ctx: &EvalCtx, l: &Layer, anchor: bool, f: SnapFeatures) -> Vec<SnapTarget> {
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layer_targets_at(ctx, l, anchor, f, 0)
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}
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fn layer_targets_at(ctx: &EvalCtx, l: &Layer, anchor: bool, f: SnapFeatures, depth: usize) -> Vec<SnapTarget> {
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if l.is_camera() || l.is_light() || l.is_3d() {
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return vec![];
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}
|
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let (m, _) = ctx.layer_to_comp(l);
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let src = SnapSource::Layer(l.id);
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let mut out = vec![];
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if let Some(b) = layer_box(ctx, l, &m) {
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let [nw, ne, _, sw] = b.corners;
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if (nw[1] - ne[1]).abs() < 1e-6 && (nw[0] - sw[0]).abs() < 1e-6 {
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let (xs, ys) = if f.edges_extended { (None, None) } else { (Some([nw[0], ne[0]]), Some([nw[1], sw[1]])) };
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for x in [nw[0], ne[0]] {
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out.push(SnapTarget::vline(x, PRI_LAYER, src).within(ys));
|
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}
|
||
for y in [nw[1], sw[1]] {
|
||
out.push(SnapTarget::hline(y, PRI_LAYER, src).within(xs));
|
||
}
|
||
}
|
||
out.extend(b.points().into_iter().map(|p| SnapTarget::point(p, PRI_LAYER, src)));
|
||
}
|
||
out.extend(anchor_feature(ctx, l, &m).filter(|_| anchor).map(|p| SnapTarget::point(p, PRI_LAYER, src)));
|
||
out.extend(layer_vertices(ctx, l).into_iter().map(|p| SnapTarget::point(p, PRI_VERTEX, SnapSource::Vertex(l.id))));
|
||
if f.collapsed_features
|
||
&& l.switches.collapse
|
||
&& depth < MAX_COLLAPSED_DEPTH
|
||
&& let effectcraft_project::LayerSource::Comp { item } = l.source
|
||
&& let Some(nc) = ctx.project.comp(item)
|
||
{
|
||
out.extend(collapsed_targets(ctx, l, item, nc, &m, f, depth));
|
||
}
|
||
out
|
||
}
|
||
|
||
/// The targets of the layers inside collapsed precomp layer `l` (showing comp `nc`), in the
|
||
/// outer comp (`m`: `l`'s layer → comp). They highlight `l` when they snap. Lines stay lines
|
||
/// only while `l` is unrotated; otherwise only the points snap.
|
||
fn collapsed_targets(
|
||
ctx: &EvalCtx,
|
||
l: &Layer,
|
||
item: effectcraft_project::ItemId,
|
||
nc: &effectcraft_project::Comp,
|
||
m: &Mat3,
|
||
f: SnapFeatures,
|
||
depth: usize,
|
||
) -> Vec<SnapTarget> {
|
||
let nctx = EvalCtx { comp_id: item, comp: nc, time: ctx.nested_time(l), ..*ctx };
|
||
let axis_aligned = m.0[0][1].abs() < 1e-9 && m.0[1][0].abs() < 1e-9;
|
||
let (sx, ox, sy, oy) = (m.0[0][0], m.0[0][2], m.0[1][1], m.0[1][2]);
|
||
let mut out = vec![];
|
||
for nl in visible_layers(&nctx, &[]) {
|
||
for t in layer_targets_at(&nctx, nl, true, f, depth + 1) {
|
||
let source = match t.source {
|
||
SnapSource::Vertex(_) => SnapSource::Vertex(l.id),
|
||
_ => SnapSource::Layer(l.id),
|
||
};
|
||
let mapped = match t.kind {
|
||
SnapKind::Point => {
|
||
let q = m.apply(vec2(t.pos[0], t.pos[1]));
|
||
Some(SnapTarget::point([q.x, q.y], t.priority, source))
|
||
}
|
||
SnapKind::VLine if axis_aligned => {
|
||
Some(SnapTarget::vline(sx * t.pos[0] + ox, t.priority, source).within(t.span.map(|[a, b]| [sy * a + oy, sy * b + oy])))
|
||
}
|
||
SnapKind::HLine if axis_aligned => {
|
||
Some(SnapTarget::hline(sy * t.pos[1] + oy, t.priority, source).within(t.span.map(|[a, b]| [sx * a + ox, sx * b + ox])))
|
||
}
|
||
_ => None,
|
||
};
|
||
out.extend(mapped);
|
||
}
|
||
}
|
||
out
|
||
}
|
||
|
||
// ---------------------------------------------------------------- channels and exposure
|
||
|
||
/// Show Channel and Color Management Settings.
|
||
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
|
||
pub enum Channel {
|
||
#[default]
|
||
Rgb,
|
||
Red,
|
||
Green,
|
||
Blue,
|
||
Alpha,
|
||
RgbStraight,
|
||
}
|
||
|
||
impl Channel {
|
||
pub const ALL: [Channel; 6] = [Channel::Rgb, Channel::Red, Channel::Green, Channel::Blue, Channel::Alpha, Channel::RgbStraight];
|
||
pub fn id(self) -> &'static str {
|
||
match self {
|
||
Channel::Rgb => "rgb",
|
||
Channel::Red => "red",
|
||
Channel::Green => "green",
|
||
Channel::Blue => "blue",
|
||
Channel::Alpha => "alpha",
|
||
Channel::RgbStraight => "rgbStraight",
|
||
}
|
||
}
|
||
pub fn label(self) -> &'static str {
|
||
match self {
|
||
Channel::Rgb => "RGB",
|
||
Channel::Red => "Red",
|
||
Channel::Green => "Green",
|
||
Channel::Blue => "Blue",
|
||
Channel::Alpha => "Alpha",
|
||
Channel::RgbStraight => "RGB Straight",
|
||
}
|
||
}
|
||
pub fn from_name(s: &str) -> Option<Channel> {
|
||
let n = s.to_ascii_lowercase().replace([' ', '_', '-'], "");
|
||
Channel::ALL.into_iter().find(|c| c.id().to_ascii_lowercase() == n || c.label().to_ascii_lowercase().replace(' ', "") == n)
|
||
}
|
||
}
|
||
|
||
fn srgb_to_linear(v: f32) -> f32 {
|
||
if v <= 0.04045 { v / 12.92 } else { ((v + 0.055) / 1.055).powf(2.4) }
|
||
}
|
||
fn linear_to_srgb(v: f32) -> f32 {
|
||
let v = v.max(0.0);
|
||
if v <= 0.003_130_8 { v * 12.92 } else { 1.055 * v.powf(1.0 / 2.4) - 0.055 }
|
||
}
|
||
|
||
/// 8-bit exposure lookup table: `stops` applied in linear light.
|
||
pub fn exposure_lut(stops: f32) -> [u8; 256] {
|
||
let k = 2f32.powf(stops);
|
||
let mut lut = [0u8; 256];
|
||
for (i, o) in lut.iter_mut().enumerate() {
|
||
let lin = srgb_to_linear(i as f32 / 255.0) * k;
|
||
*o = (linear_to_srgb(lin).clamp(0.0, 1.0) * 255.0 + 0.5) as u8;
|
||
}
|
||
lut
|
||
}
|
||
|
||
/// Apply the viewer's channel and exposure to premultiplied 8-bit RGBA pixels in place.
|
||
/// RGB shows the image (exposure only); Red/Green/Blue/Alpha show one channel as an opaque
|
||
/// grayscale image (or tinted in that channel's colour when `colorized`); RGB Straight shows the
|
||
/// unpremultiplied colour, opaque.
|
||
pub fn display_transform(px: &mut [[u8; 4]], channel: Channel, colorized: bool, stops: f32) {
|
||
let lut = (stops != 0.0).then(|| exposure_lut(stops));
|
||
let ex = |v: u8| lut.as_ref().map(|l| l[v as usize]).unwrap_or(v);
|
||
for p in px.iter_mut() {
|
||
let [r, g, b, a] = *p;
|
||
*p = match channel {
|
||
Channel::Rgb => {
|
||
if lut.is_none() {
|
||
continue;
|
||
}
|
||
// Exposure on straight colour, re-premultiplied.
|
||
let un = |c: u8| if a == 0 { 0 } else { ((c as u32 * 255 + a as u32 / 2) / a as u32).min(255) as u8 };
|
||
let pm = |c: u8| ((ex(un(c)) as u32 * a as u32 + 127) / 255) as u8;
|
||
[pm(r), pm(g), pm(b), a]
|
||
}
|
||
Channel::Red | Channel::Green | Channel::Blue => {
|
||
let (i, c) = match channel {
|
||
Channel::Red => (0, r),
|
||
Channel::Green => (1, g),
|
||
_ => (2, b),
|
||
};
|
||
let v = ex(c);
|
||
if colorized {
|
||
let mut o = [0, 0, 0, 255];
|
||
o[i] = v;
|
||
o
|
||
} else {
|
||
[v, v, v, 255]
|
||
}
|
||
}
|
||
Channel::Alpha => {
|
||
let v = ex(a);
|
||
[v, v, v, 255]
|
||
}
|
||
Channel::RgbStraight => {
|
||
let un = |c: u8| if a == 0 { 0 } else { ((c as u32 * 255 + a as u32 / 2) / a as u32).min(255) as u8 };
|
||
[ex(un(r)), ex(un(g)), ex(un(b)), 255]
|
||
}
|
||
};
|
||
}
|
||
}
|
||
|
||
// ---------------------------------------------------------------- display colour management
|
||
|
||
/// View ▸ Simulate Output: the output device a preview imitates.
|
||
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash, Serialize, Deserialize)]
|
||
pub enum SimProfile {
|
||
#[default]
|
||
None,
|
||
/// HDTV (Rec. 709): ITU-R BT.709 primaries, BT.1886 gamma 2.4.
|
||
Rec709,
|
||
/// UHDTV (Rec. 2020): ITU-R BT.2020 primaries, gamma 2.4.
|
||
Rec2020,
|
||
/// Display P3: SMPTE EG 432-1 primaries, D65, the sRGB curve.
|
||
P3,
|
||
/// Internet Standard RGB (sRGB, IEC 61966-2-1).
|
||
Srgb,
|
||
/// Linear light with Rec. 709 primaries (no transfer curve).
|
||
Linear,
|
||
/// SDTV NTSC: SMPTE 170M primaries, gamma 2.4.
|
||
Ntsc,
|
||
/// SDTV PAL: EBU Tech 3213 primaries, gamma 2.4.
|
||
Pal,
|
||
/// Legacy Macintosh RGB: Rec. 709 primaries, gamma 1.8.
|
||
Mac18,
|
||
/// My Custom RGB: the user's own device ([`CustomRgb`], in Settings).
|
||
MyCustom,
|
||
}
|
||
|
||
/// A transfer curve of a simulated or display profile.
|
||
#[derive(Clone, Copy, Debug, PartialEq)]
|
||
pub enum Curve {
|
||
Srgb,
|
||
Gamma(f32),
|
||
Linear,
|
||
/// A colour space's own curve (PQ, HLG…).
|
||
Space(space::Curve),
|
||
}
|
||
|
||
impl Curve {
|
||
fn decode(self, v: f32) -> f32 {
|
||
let a = v.abs();
|
||
let l = match self {
|
||
Curve::Srgb => srgb_to_linear(a),
|
||
Curve::Gamma(g) => a.powf(g),
|
||
Curve::Linear => a,
|
||
Curve::Space(c) => c.decode(a),
|
||
};
|
||
l.copysign(v)
|
||
}
|
||
fn encode(self, v: f32) -> f32 {
|
||
let a = v.abs();
|
||
let e = match self {
|
||
Curve::Srgb => linear_to_srgb(a),
|
||
Curve::Gamma(g) => a.powf(1.0 / g),
|
||
Curve::Linear => a,
|
||
Curve::Space(c) => c.encode(a),
|
||
};
|
||
e.copysign(v)
|
||
}
|
||
}
|
||
|
||
const P709: [[f64; 2]; 3] = [[0.640, 0.330], [0.300, 0.600], [0.150, 0.060]];
|
||
|
||
impl SimProfile {
|
||
pub const ALL: [SimProfile; 10] = [
|
||
SimProfile::None,
|
||
SimProfile::Rec709,
|
||
SimProfile::Ntsc,
|
||
SimProfile::Pal,
|
||
SimProfile::Mac18,
|
||
SimProfile::Srgb,
|
||
SimProfile::Rec2020,
|
||
SimProfile::P3,
|
||
SimProfile::Linear,
|
||
SimProfile::MyCustom,
|
||
];
|
||
|
||
pub fn id(self) -> &'static str {
|
||
match self {
|
||
SimProfile::None => "none",
|
||
SimProfile::Rec709 => "rec709",
|
||
SimProfile::Rec2020 => "rec2020",
|
||
SimProfile::P3 => "p3",
|
||
SimProfile::Srgb => "srgb",
|
||
SimProfile::Linear => "linear",
|
||
SimProfile::Ntsc => "ntsc",
|
||
SimProfile::Pal => "pal",
|
||
SimProfile::Mac18 => "mac18",
|
||
SimProfile::MyCustom => "myCustom",
|
||
}
|
||
}
|
||
|
||
pub fn label(self) -> &'static str {
|
||
match self {
|
||
SimProfile::None => "No Output Simulation",
|
||
SimProfile::Rec709 => "HDTV (Rec. 709)",
|
||
SimProfile::Rec2020 => "UHDTV (Rec. 2020)",
|
||
SimProfile::P3 => "Display P3",
|
||
SimProfile::Srgb => "Internet Standard RGB (sRGB)",
|
||
SimProfile::Linear => "Linear (1.0 Gamma)",
|
||
SimProfile::Ntsc => "SDTV NTSC",
|
||
SimProfile::Pal => "SDTV PAL",
|
||
SimProfile::Mac18 => "Legacy Macintosh RGB (Gamma 1.8)",
|
||
SimProfile::MyCustom => "My Custom RGB",
|
||
}
|
||
}
|
||
|
||
pub fn parse(s: &str) -> Option<SimProfile> {
|
||
let k: String = s.chars().filter(|c| c.is_ascii_alphanumeric()).collect::<String>().to_ascii_lowercase();
|
||
SimProfile::ALL
|
||
.into_iter()
|
||
.find(|p| p.id().to_ascii_lowercase() == k || p.label().chars().filter(|c| c.is_ascii_alphanumeric()).collect::<String>().to_ascii_lowercase() == k)
|
||
.or(match k.as_str() {
|
||
"off" => Some(SimProfile::None),
|
||
"hdtv" | "bt709" => Some(SimProfile::Rec709),
|
||
"bt2020" | "uhdtv" => Some(SimProfile::Rec2020),
|
||
"displayp3" => Some(SimProfile::P3),
|
||
"lin" | "linearlight" => Some(SimProfile::Linear),
|
||
_ => None,
|
||
})
|
||
}
|
||
|
||
/// (primaries, curve); `None` for No Output Simulation and My Custom RGB (see [`CustomRgb`]).
|
||
pub fn space(self) -> Option<([[f64; 2]; 3], Curve)> {
|
||
Some(match self {
|
||
SimProfile::None | SimProfile::MyCustom => return None,
|
||
SimProfile::Rec709 => (P709, Curve::Gamma(2.4)),
|
||
SimProfile::Rec2020 => (ColorSpace::Rec2020.primaries(), Curve::Gamma(2.4)),
|
||
SimProfile::P3 => (ColorSpace::DisplayP3.primaries(), Curve::Srgb),
|
||
SimProfile::Srgb => (P709, Curve::Srgb),
|
||
SimProfile::Linear => (P709, Curve::Linear),
|
||
SimProfile::Ntsc => ([[0.630, 0.340], [0.310, 0.595], [0.155, 0.070]], Curve::Gamma(2.4)),
|
||
SimProfile::Pal => ([[0.640, 0.330], [0.290, 0.600], [0.150, 0.060]], Curve::Gamma(2.4)),
|
||
SimProfile::Mac18 => (P709, Curve::Gamma(1.8)),
|
||
})
|
||
}
|
||
}
|
||
|
||
/// View ▸ Simulate Output setting: the profile, and Preserve RGB (the output numbers are sent
|
||
/// to the display unconverted, as on a device that doesn't colour-manage).
|
||
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash, Serialize, Deserialize)]
|
||
#[serde(default)]
|
||
pub struct Simulation {
|
||
pub profile: SimProfile,
|
||
pub preserve_rgb: bool,
|
||
}
|
||
|
||
/// View ▸ Simulate Output ▸ My Custom RGB…: a user-defined output device, kept in Settings
|
||
/// (`customRgb`). Defined by primaries and white point (CIE xy) and a gamma or the sRGB curve,
|
||
/// typed in or read from an RGB ICC profile.
|
||
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
|
||
#[serde(default, rename_all = "camelCase")]
|
||
pub struct CustomRgb {
|
||
pub name: String,
|
||
pub red: [f64; 2],
|
||
pub green: [f64; 2],
|
||
pub blue: [f64; 2],
|
||
pub white: [f64; 2],
|
||
pub gamma: f64,
|
||
/// The sRGB piecewise curve instead of a pure power curve.
|
||
pub srgb_curve: bool,
|
||
/// The ICC profile the numbers were read from (empty: typed in).
|
||
pub icc: String,
|
||
/// A LUT-based (`A2B0`) profile's bytes: the simulation runs the profile's tables (baked
|
||
/// into a 3D LUT) instead of the numbers above, which then only approximate it.
|
||
#[serde(skip_serializing_if = "IccLut::is_empty")]
|
||
pub icc_lut: IccLut,
|
||
}
|
||
|
||
/// The bytes of a LUT-based ICC profile, kept in Settings as base64.
|
||
#[derive(Clone, Default, PartialEq)]
|
||
pub struct IccLut(pub Option<Arc<Vec<u8>>>);
|
||
|
||
impl IccLut {
|
||
pub fn is_empty(&self) -> bool {
|
||
self.0.is_none()
|
||
}
|
||
|
||
/// The parsed profile.
|
||
pub fn profile(&self) -> Option<effectcraft_color::icc::LutProfile> {
|
||
match effectcraft_color::icc::parse_profile(self.0.as_deref()?) {
|
||
Ok(effectcraft_color::icc::Profile::Lut(p)) => Some(p),
|
||
_ => None,
|
||
}
|
||
}
|
||
|
||
fn hash(&self) -> u64 {
|
||
use std::hash::{Hash, Hasher};
|
||
let mut h = std::collections::hash_map::DefaultHasher::new();
|
||
self.0.as_deref().hash(&mut h);
|
||
h.finish()
|
||
}
|
||
}
|
||
|
||
impl std::fmt::Debug for IccLut {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
match &self.0 {
|
||
Some(b) => write!(f, "IccLut({} bytes, {:016x})", b.len(), self.hash()),
|
||
None => write!(f, "IccLut(none)"),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl Serialize for IccLut {
|
||
fn serialize<S: serde::Serializer>(&self, s: S) -> std::result::Result<S::Ok, S::Error> {
|
||
s.serialize_str(&self.0.as_deref().map(|b| effectcraft_track::roto::rle::base64_encode(b)).unwrap_or_default())
|
||
}
|
||
}
|
||
|
||
impl<'de> Deserialize<'de> for IccLut {
|
||
fn deserialize<D: serde::Deserializer<'de>>(d: D) -> std::result::Result<Self, D::Error> {
|
||
let s = String::deserialize(d)?;
|
||
Ok(IccLut(effectcraft_track::roto::rle::base64_decode(&s).filter(|b| !b.is_empty()).map(Arc::new)))
|
||
}
|
||
}
|
||
|
||
impl Default for CustomRgb {
|
||
fn default() -> Self {
|
||
CustomRgb {
|
||
name: "My Custom RGB".into(),
|
||
red: P709[0],
|
||
green: P709[1],
|
||
blue: P709[2],
|
||
white: D65,
|
||
gamma: 2.2,
|
||
srgb_curve: false,
|
||
icc: String::new(),
|
||
icc_lut: IccLut::default(),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl CustomRgb {
|
||
pub fn primaries(&self) -> [[f64; 2]; 3] {
|
||
[self.red, self.green, self.blue]
|
||
}
|
||
|
||
pub fn curve(&self) -> Curve {
|
||
if self.srgb_curve {
|
||
Curve::Srgb
|
||
} else if (self.gamma - 1.0).abs() < 1e-9 {
|
||
Curve::Linear
|
||
} else {
|
||
Curve::Gamma(self.gamma as f32)
|
||
}
|
||
}
|
||
|
||
/// Chromaticities inside (0, 1) with y > 0, a gamma in 0.1–10, and primaries that span a
|
||
/// triangle.
|
||
pub fn validate(&self) -> std::result::Result<(), String> {
|
||
for (n, c) in [("red", self.red), ("green", self.green), ("blue", self.blue), ("white", self.white)] {
|
||
if !(c[0] > 0.0 && c[1] > 0.0 && c[0] < 1.0 && c[1] < 1.0 && c[0] + c[1] <= 1.0) {
|
||
return Err(format!("{n}: chromaticity x, y must be in (0, 1) with x + y ≤ 1"));
|
||
}
|
||
}
|
||
if !self.srgb_curve && !(0.1..=10.0).contains(&self.gamma) {
|
||
return Err("gamma must be between 0.1 and 10".into());
|
||
}
|
||
let [r, g, b] = self.primaries();
|
||
let area = (g[0] - r[0]) * (b[1] - r[1]) - (b[0] - r[0]) * (g[1] - r[1]);
|
||
if area.abs() < 1e-6 {
|
||
return Err("the primaries must form a triangle".into());
|
||
}
|
||
Ok(())
|
||
}
|
||
|
||
/// Take primaries, white and curve from an RGB ICC profile. A LUT-based profile is kept
|
||
/// whole ([`CustomRgb::icc_lut`]); its numbers are the primaries' and white's colours
|
||
/// (adapted to D65) and the gamma that fits its neutral ramp.
|
||
pub fn from_icc(bytes: &[u8], path: &str) -> std::result::Result<CustomRgb, String> {
|
||
use effectcraft_color::icc::{Profile, parse_profile};
|
||
let stem = || std::path::Path::new(path).file_stem().map(|n| n.to_string_lossy().to_string()).unwrap_or_else(|| "ICC Profile".into());
|
||
let name = |d: &str| if d.trim().is_empty() { stem() } else { d.trim().to_string() };
|
||
let r = |c: [f64; 2]| c.map(|v| (v * 1e5).round() / 1e5);
|
||
match parse_profile(bytes)? {
|
||
Profile::Matrix(p) => {
|
||
let gamma = (p.trc.iter().map(|t| t.fit_gamma()).sum::<f64>() / 3.0 * 1000.0).round() / 1000.0;
|
||
Ok(CustomRgb {
|
||
name: name(&p.description),
|
||
red: r(p.primaries[0]),
|
||
green: r(p.primaries[1]),
|
||
blue: r(p.primaries[2]),
|
||
white: r(p.white),
|
||
gamma,
|
||
srgb_curve: p.trc[0].is_srgb(),
|
||
icc: path.to_string(),
|
||
icc_lut: IccLut::default(),
|
||
})
|
||
}
|
||
Profile::Lut(p) => {
|
||
let (prims, _, gamma) = p.approximate();
|
||
// The PCS is D50-relative: the device white shows as the viewer's D65.
|
||
let a = space::bradford(effectcraft_color::icc::D50, D65);
|
||
let adapt = |c: [f64; 2]| {
|
||
let v = space::mul_vec(&a, [c[0] / c[1], 1.0, (1.0 - c[0] - c[1]) / c[1]]);
|
||
let sum = v[0] + v[1] + v[2];
|
||
let c = [(v[0] / sum).clamp(1e-4, 0.9998), (v[1] / sum).clamp(1e-4, 0.9998)];
|
||
// Table rounding can put a primary a hair outside the spectrum locus.
|
||
let k = (0.9999 / (c[0] + c[1])).min(1.0);
|
||
[c[0] * k, c[1] * k]
|
||
};
|
||
Ok(CustomRgb {
|
||
name: name(&p.description),
|
||
red: r(adapt(prims[0])),
|
||
green: r(adapt(prims[1])),
|
||
blue: r(adapt(prims[2])),
|
||
white: D65,
|
||
gamma: (gamma * 1000.0).round() / 1000.0,
|
||
srgb_curve: false,
|
||
icc: path.to_string(),
|
||
icc_lut: IccLut(Some(Arc::new(bytes.to_vec()))),
|
||
})
|
||
}
|
||
}
|
||
}
|
||
|
||
fn prof(&self) -> Prof {
|
||
let m = space::rgb_to_xyz(self.primaries(), self.white);
|
||
let xyz = if self.white == D65 { m } else { space::mul(&space::bradford(self.white, D65), &m) };
|
||
Prof { xyz, curve: self.curve() }
|
||
}
|
||
}
|
||
|
||
/// An RGB space for viewer conversions: primaries (D65) and curve.
|
||
#[derive(Clone, Copy, Debug, PartialEq)]
|
||
struct Prof {
|
||
/// Linear RGB → XYZ D65.
|
||
xyz: [[f64; 3]; 3],
|
||
curve: Curve,
|
||
}
|
||
|
||
impl Prof {
|
||
fn new(prims: [[f64; 2]; 3], curve: Curve) -> Prof {
|
||
Prof { xyz: space::rgb_to_xyz(prims, D65), curve }
|
||
}
|
||
/// A colour space (linear when `linear`).
|
||
fn of(cs: ColorSpace, linear: bool) -> Prof {
|
||
let curve = if linear { Curve::Linear } else { Curve::Space(cs.curve()) };
|
||
Prof { xyz: cs.to_xyz(), curve }
|
||
}
|
||
}
|
||
|
||
/// A linear-RGB matrix plus curves between two profiles.
|
||
#[derive(Clone, Copy, Debug)]
|
||
struct Conv {
|
||
from: Curve,
|
||
m: Option<[[f32; 3]; 3]>,
|
||
to: Curve,
|
||
}
|
||
|
||
impl Conv {
|
||
fn new(a: Prof, b: Prof) -> Conv {
|
||
let m = (a.xyz != b.xyz).then(|| {
|
||
let m = space::mul(&space::invert(&b.xyz), &a.xyz);
|
||
m.map(|r| r.map(|v| v as f32))
|
||
});
|
||
Conv { from: a.curve, m, to: b.curve }
|
||
}
|
||
fn apply(&self, c: [f32; 3]) -> [f32; 3] {
|
||
let l = c.map(|v| self.from.decode(v));
|
||
let l = match &self.m {
|
||
Some(m) => [0, 1, 2].map(|i| m[i][0] * l[0] + m[i][1] * l[1] + m[i][2] * l[2]),
|
||
None => l,
|
||
};
|
||
l.map(|v| self.to.encode(v))
|
||
}
|
||
}
|
||
|
||
const D65: [f64; 2] = [0.3127, 0.3290];
|
||
|
||
/// The viewer's colour conversion from the rendered frame (sRGB-encoded display pixels) to
|
||
/// what the monitor shows (View ▸ Use Display Color Management, View ▸ Simulate Output and
|
||
/// the display profile in Settings ▸ Previews). `None` when nothing changes.
|
||
#[derive(Clone, Debug)]
|
||
pub struct DisplayColor {
|
||
sim: Option<(Conv, Option<Conv>)>,
|
||
display: Option<Conv>,
|
||
/// A LUT-based My Custom RGB profile: the whole simulation baked into a 3D LUT.
|
||
lut: Option<Arc<effectcraft_color::icc::Lut3d>>,
|
||
}
|
||
|
||
impl DisplayColor {
|
||
/// `working`: the project working space (None = unmanaged: nothing is converted, as in
|
||
/// After Effects); `linear`: the working space is linear; `source`: the space rendered
|
||
/// frames are in (the project's output space, sRGB by default); `dcm`: Use Display Color
|
||
/// Management; `display`: the monitor's space.
|
||
#[allow(clippy::too_many_arguments)]
|
||
pub fn new(
|
||
working: Option<ColorSpace>,
|
||
linear: bool,
|
||
source: ColorSpace,
|
||
dcm: bool,
|
||
display: ColorSpace,
|
||
sim: Simulation,
|
||
custom: &CustomRgb,
|
||
) -> Option<DisplayColor> {
|
||
let ws = working?;
|
||
let src = Prof::of(source, false);
|
||
if !dcm {
|
||
// Without display colour management the working space's numbers go to the screen.
|
||
let raw = Conv::new(src, Prof::of(ws, linear));
|
||
return Some(DisplayColor { sim: None, display: Some(raw), lut: None });
|
||
}
|
||
if sim.profile == SimProfile::MyCustom
|
||
&& let Some(lut) = lut_simulation(custom, src, display, sim.preserve_rgb)
|
||
{
|
||
return Some(DisplayColor { sim: None, display: None, lut: Some(lut) });
|
||
}
|
||
let out = match sim.profile {
|
||
SimProfile::MyCustom => Some(custom.prof()),
|
||
p => p.space().map(|(prims, curve)| Prof::new(prims, curve)),
|
||
};
|
||
let sim = out.map(|out| {
|
||
(
|
||
Conv::new(src, out),
|
||
Some(if sim.preserve_rgb {
|
||
Conv::new(Prof::new(P709, Curve::Srgb), Prof::of(display, false))
|
||
} else {
|
||
Conv::new(out, Prof::of(display, false))
|
||
}),
|
||
)
|
||
});
|
||
let display = (display != source).then(|| Conv::new(src, Prof::of(display, false)));
|
||
(sim.is_some() || display.is_some()).then_some(DisplayColor { sim, display, lut: None })
|
||
}
|
||
|
||
/// The conversion a session's viewer uses.
|
||
pub fn of(s: &crate::Session) -> Option<DisplayColor> {
|
||
let st = &s.project.settings;
|
||
let display = ColorSpace::parse(&s.prefs.previews.display_profile).unwrap_or(ColorSpace::Srgb);
|
||
let v = &s.state.viewer;
|
||
let linear = st.working_space.is_some_and(|w| st.linearize || w.is_linear());
|
||
DisplayColor::new(
|
||
st.working_space,
|
||
linear,
|
||
st.output_space.unwrap_or(ColorSpace::Srgb),
|
||
v.display_color_management,
|
||
display,
|
||
v.simulation,
|
||
&s.prefs.custom_rgb,
|
||
)
|
||
}
|
||
|
||
/// Whether the simulation runs a LUT-based ICC profile (baked into a 3D LUT).
|
||
pub fn is_lut(&self) -> bool {
|
||
self.lut.is_some()
|
||
}
|
||
|
||
/// One straight colour (0..1 floats).
|
||
pub fn apply_straight(&self, c: [f32; 3]) -> [f32; 3] {
|
||
if let Some(l) = &self.lut {
|
||
return l.eval(c.map(|v| v.clamp(0.0, 1.0))).map(|v| v.clamp(0.0, 1.0));
|
||
}
|
||
let c = match &self.sim {
|
||
// Through the output's 8-bit encoding (clipped and quantised like the real output),
|
||
// then shown on the display: converted from the output profile, or — Preserve RGB —
|
||
// the output numbers taken as if they were sRGB.
|
||
Some((to, show)) => {
|
||
let o = to.apply(c).map(|v| (v.clamp(0.0, 1.0) * 255.0).round() / 255.0);
|
||
show.map_or(o, |b| b.apply(o))
|
||
}
|
||
None => self.display.map_or(c, |d| d.apply(c)),
|
||
};
|
||
c.map(|v| v.clamp(0.0, 1.0))
|
||
}
|
||
|
||
/// Premultiplied 8-bit RGBA pixels in place.
|
||
pub fn apply(&self, px: &mut [[u8; 4]]) {
|
||
use rayon::prelude::*;
|
||
px.par_iter_mut().for_each(|p| {
|
||
let a = p[3];
|
||
if a == 0 {
|
||
return;
|
||
}
|
||
let af = a as f32 / 255.0;
|
||
let c = [0, 1, 2].map(|i| (p[i] as f32 / 255.0 / af).min(1.0));
|
||
let o = self.apply_straight(c);
|
||
for i in 0..3 {
|
||
p[i] = (o[i] * af * 255.0 + 0.5) as u8;
|
||
}
|
||
});
|
||
}
|
||
}
|
||
|
||
/// Grid points per axis of a baked LUT simulation (a profile without `B2A0` is inverted
|
||
/// numerically per point, so its grid is coarser).
|
||
const SIM_LUT_SIZE: usize = 33;
|
||
const SIM_LUT_SIZE_INVERTED: usize = 17;
|
||
|
||
/// My Custom RGB with a LUT-based profile: rendered colours (`src`) → the device's numbers
|
||
/// (`B2A0`, or `A2B0` inverted), clipped and quantised to 8 bits like the real output → what the
|
||
/// device shows (`A2B0`; Preserve RGB: the numbers taken as sRGB) → the display. Baked once per
|
||
/// profile and conversion (the last one is cached).
|
||
fn lut_simulation(custom: &CustomRgb, src: Prof, display: ColorSpace, preserve: bool) -> Option<Arc<effectcraft_color::icc::Lut3d>> {
|
||
type Cache = Option<(u64, Arc<effectcraft_color::icc::Lut3d>)>;
|
||
static CACHE: std::sync::Mutex<Cache> = std::sync::Mutex::new(None);
|
||
custom.icc_lut.0.as_ref()?;
|
||
let key = {
|
||
use std::hash::{Hash, Hasher};
|
||
let mut h = std::collections::hash_map::DefaultHasher::new();
|
||
(custom.icc_lut.hash(), format!("{src:?}{display:?}{preserve}")).hash(&mut h);
|
||
h.finish()
|
||
};
|
||
if let Some((k, l)) = CACHE.lock().ok()?.as_ref()
|
||
&& *k == key
|
||
{
|
||
return Some(l.clone());
|
||
}
|
||
let prof = custom.icc_lut.profile()?;
|
||
let to_d50 = space::mul(&space::bradford(D65, effectcraft_color::icc::D50), &src.xyz);
|
||
let from_d50 = space::bradford(effectcraft_color::icc::D50, D65);
|
||
let disp = Prof::of(display, false);
|
||
let disp_inv = space::invert(&disp.xyz);
|
||
let srgb_to_display = Conv::new(Prof::new(P709, Curve::Srgb), disp);
|
||
let size = if prof.b2a.is_some() { SIM_LUT_SIZE } else { SIM_LUT_SIZE_INVERTED };
|
||
let lut = effectcraft_color::icc::Lut3d::bake(size, |c| {
|
||
let lin = c.map(|v| src.curve.decode(v as f32) as f64);
|
||
let dev = prof.from_xyz(space::mul_vec(&to_d50, lin), c).map(|v| (v.clamp(0.0, 1.0) * 255.0).round() / 255.0);
|
||
if preserve {
|
||
return srgb_to_display.apply(dev.map(|v| v as f32)).map(|v| v as f64);
|
||
}
|
||
let xyz = space::mul_vec(&from_d50, prof.to_xyz(dev));
|
||
space::mul_vec(&disp_inv, xyz).map(|v| disp.curve.encode(v as f32) as f64)
|
||
});
|
||
let lut = Arc::new(lut);
|
||
if let Ok(mut c) = CACHE.lock() {
|
||
*c = Some((key, lut.clone()));
|
||
}
|
||
Some(lut)
|
||
}
|
||
|
||
// ---------------------------------------------------------------- snapshot
|
||
|
||
/// Take Snapshot (Shift+F5): a rendered frame kept for comparison (Show Snapshot, F5).
|
||
#[derive(Clone, Debug)]
|
||
pub struct Snapshot {
|
||
pub comp: effectcraft_project::ItemId,
|
||
pub time: Tick,
|
||
/// Render scale the image was taken at.
|
||
pub scale: f64,
|
||
pub image: Arc<Image>,
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod snap_expression_tests {
|
||
use super::*;
|
||
use serde_json::json;
|
||
use std::sync::atomic::{AtomicUsize, Ordering};
|
||
|
||
struct PositionHost(AtomicUsize);
|
||
impl ExprHost for PositionHost {
|
||
fn eval(&self, ctx: &EvalCtx, _: &Layer, _: &Property, value: &Value) -> Result<Value, String> {
|
||
self.0.fetch_add(1, Ordering::Relaxed);
|
||
let v = value.components();
|
||
Ok(Value::Vec3([v[0] + 10. * ctx.time.seconds(), v[1], 0.]))
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn snapping_reuses_expressions_within_one_query_but_refreshes_time_and_edits() {
|
||
let mut s = crate::Session::default();
|
||
s.execute("comp.new", json!({"width":320,"height":180,"duration":5})).unwrap();
|
||
let lid = s.execute("layer.newSolid", json!({"width":40,"height":20})).unwrap()["layer"].as_u64().unwrap();
|
||
s.execute("prop.setExpression", json!({"layer":lid,"path":"transform/position","expression":"value"})).unwrap();
|
||
let cid = s.active_comp_id().unwrap();
|
||
let host = PositionHost(AtomicUsize::new(0));
|
||
let opts = SnapOptions { layers: true, ..Default::default() };
|
||
let query = |s: &crate::Session, time, cached| {
|
||
let ctx = EvalCtx { expr: Some(&host), ..EvalCtx::new(&s.project, cid, s.project.comp(cid).unwrap(), time) };
|
||
if cached { targets(&ctx, &[], opts) } else { targets_in(&ctx, &[], opts) }
|
||
};
|
||
let expected = query(&s, Tick::ZERO, false);
|
||
assert!(host.0.swap(0, Ordering::Relaxed) > 1, "fixture must visit the same expression for multiple geometry features");
|
||
assert_eq!(query(&s, Tick::ZERO, true), expected);
|
||
assert_eq!(host.0.swap(0, Ordering::Relaxed), 1);
|
||
let moved = query(&s, Tick::from_seconds_f64(1.), true);
|
||
assert_ne!(moved, expected, "a new time must not reuse stale targets");
|
||
assert_eq!(host.0.swap(0, Ordering::Relaxed), 1);
|
||
s.execute("prop.set", json!({"layer":lid,"path":"transform/position","value":[200,100,0]})).unwrap();
|
||
let edited = query(&s, Tick::ZERO, true);
|
||
assert_ne!(edited, expected, "a new project revision must not reuse stale targets");
|
||
assert_eq!(host.0.swap(0, Ordering::Relaxed), 1);
|
||
}
|
||
}
|