From 891757e2f5ca01531c31493fe0e60217a33c920e Mon Sep 17 00:00:00 2001 From: Kristian Myram Date: Tue, 27 Oct 2026 22:39:35 +0000 Subject: [PATCH 1/3] #2465: use Linear interpolation for the Linear ease preset --- extensions/scriptui-panels/Ease Presets.jsx | 22 +++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/extensions/scriptui-panels/Ease Presets.jsx b/extensions/scriptui-panels/Ease Presets.jsx index 6f6eadae5..9f4ea2185 100644 --- a/extensions/scriptui-panels/Ease Presets.jsx +++ b/extensions/scriptui-panels/Ease Presets.jsx @@ -18,6 +18,8 @@ // segment on that side. So a selected pair gets the whole curve, and a single key works too. // Roving keys are skipped: they pass speed straight through (their sides stay linear), so an ease // set on them wouldn't play. +// The built-in Linear preset uses Linear interpolation, including on unused endpoint sides +// so a fully linear key has a diamond icon; the other presets use Bezier. // // User presets are kept with app.settings (section "Ease Presets", key "userPresets") as JSON: // {"version": 1, "presets": [{"name": …, "curve": {"outInfluence", "outSpeed", "inInfluence", @@ -29,6 +31,7 @@ var MAX_NAME = 64; var MIN_INFLUENCE = 0.1; var MAX_SPEED = 100; + var LINEAR = KeyframeInterpolationType.LINEAR; var BEZIER = KeyframeInterpolationType.BEZIER; var HOLD = KeyframeInterpolationType.HOLD; @@ -178,16 +181,16 @@ // Ease one side of key `k` with `eases`, leaving its other side as it plays (auto-Bezier and // linear sides keep their shape; a continuous key stops being continuous, its sides now differ). - function easeSide(p, k, out, eases) { + function easeSide(p, k, out, eases, interpolation) { var inType = p.keyInInterpolationType(k), outType = p.keyOutInterpolationType(k); var inEase = p.keyInTemporalEase(k), outEase = p.keyOutTemporalEase(k); if (p.keyTemporalContinuous(k)) p.setTemporalContinuousAtKey(k, false); if (out) { p.setTemporalEaseAtKey(k, inEase, eases); - p.setInterpolationTypeAtKey(k, inType, BEZIER); + p.setInterpolationTypeAtKey(k, inType, interpolation); } else { p.setTemporalEaseAtKey(k, eases, outEase); - p.setInterpolationTypeAtKey(k, BEZIER, outType); + p.setInterpolationTypeAtKey(k, interpolation, outType); } } @@ -201,7 +204,7 @@ // Ease the sides `mode` names ("In", "Out" or "In-Out") of every selected keyframe with `c`, in // one undo step: a side with a neighbouring key, scaled to the segment on that side. Returns // {eased, roving}: the number of keyframes eased, and of selected roving keyframes skipped. - function applyCurve(c, mode) { + function applyCurve(c, mode, interpolation) { var keyed = selectedKeyed(), sides = [], keys = 0, roving = 0; var doIn = mode !== "Out", doOut = mode !== "In"; // Every side and its eases first: the segments are measured before any key changes. @@ -214,16 +217,16 @@ continue; } var s = doIn && k > 1 ? slopes(p, k - 1) : null; - if (s) sides.push({ prop: p, key: k, out: false, eases: eases(s, c.inSpeed, c.inInfluence) }); + if (s || (doIn && interpolation === LINEAR)) sides.push({ prop: p, key: k, out: false, eases: s ? eases(s, c.inSpeed, c.inInfluence) : p.keyInTemporalEase(k) }); s = doOut && k < p.numKeys ? slopes(p, k) : null; - if (s) sides.push({ prop: p, key: k, out: true, eases: eases(s, c.outSpeed, c.outInfluence) }); + if (s || (doOut && interpolation === LINEAR)) sides.push({ prop: p, key: k, out: true, eases: s ? eases(s, c.outSpeed, c.outInfluence) : p.keyOutTemporalEase(k) }); if (sides.length > before) keys++; } } if (!sides.length) return { eased: 0, roving: roving }; app.beginUndoGroup("Apply Ease Preset"); try { - for (var e = 0; e < sides.length; e++) easeSide(sides[e].prop, sides[e].key, sides[e].out, sides[e].eases); + for (var e = 0; e < sides.length; e++) easeSide(sides[e].prop, sides[e].key, sides[e].out, sides[e].eases, interpolation); } finally { app.endUndoGroup(); } @@ -384,7 +387,10 @@ function apply(c, what) { var m = mode.selection ? mode.selection.text : "In-Out"; - var r = applyCurve(c, m), n = r.eased; + // Linear is an interpolation type too, so its keys get diamond icons. Edited speeds + // make a custom Bezier curve even while Linear remains selected in the list. + var interpolation = list.selection && list.selection.text === "Linear" && c.outSpeed === 1 && c.inSpeed === 1 ? LINEAR : BEZIER; + var r = applyCurve(c, m, interpolation), n = r.eased; var side = m === "In" ? "before it" : m === "Out" ? "after it" : "next to it"; var skipped = r.roving > 0 ? "skipped " + r.roving + " roving keyframe(s); turn off Roving to ease them" : ""; if (n > 0) status.text = "Eased " + n + " keyframe(s) (" + m + ") with " + what + (skipped ? "; " + skipped : ""); From 7a3bd9dcdf9ce177bfdd4762017d3e77fe77f783 Mon Sep 17 00:00:00 2001 From: Claude Code Date: Thu, 29 Oct 2026 08:58:50 +0000 Subject: [PATCH 2/3] #2465: test the Linear ease preset's interpolation and edited speeds Co-Authored-By: Claude Sonnet 5.5 Claude-Session: https://claude.ai/code/session_01RDvxCS8xcR28VArjzn1x7U --- crates/script/src/tests/ease_presets.rs | 28 +++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/crates/script/src/tests/ease_presets.rs b/crates/script/src/tests/ease_presets.rs index 009cc59c6..e9a9c8a0a 100644 --- a/crates/script/src/tests/ease_presets.rs +++ b/crates/script/src/tests/ease_presets.rs @@ -608,3 +608,31 @@ fn presets_saved_by_the_old_core_panel_carry_over() { let win = open_panel(&mut s); assert_eq!(control(&mut s, win, "presets")["items"].as_array().unwrap().len(), 12); } + +/// #2465: the Linear preset sets Linear interpolation on every side it applies to, including the +/// first key's out side and the last key's in side; editing its speeds makes a Bezier curve. +#[test] +fn the_linear_preset_sets_linear_interpolation_and_edited_speeds_give_bezier() { + let store = Arc::new(MemoryConfig::default()); + let mut s = session(&store); + let l = setup(&mut s); + animate(&mut s, l, "transform/opacity", &[(0.0, json!(0)), (1.0, json!(100)), (3.0, json!(20))]); + s.execute("prop.select", json!({"layer": l, "path": "transform/opacity"})).unwrap(); + let win = open_panel(&mut s); + // Start from Bezier keys so Linear has something to restore. + set(&mut s, win, "presets", json!("Ease In-Out")); + let op = prop(&s, l, "transform/opacity"); + assert!(op.keys[0].out_interp == Interp::Bezier && op.keys[2].in_interp == Interp::Bezier); + let steps = s.history.undo.len(); + set(&mut s, win, "presets", json!("Linear")); + assert_eq!(s.history.undo.len(), steps + 1, "one undo step"); + let op = prop(&s, l, "transform/opacity"); + for (i, k) in op.keys.iter().enumerate() { + assert_eq!((k.in_interp, k.out_interp), (Interp::Linear, Interp::Linear), "key {i}"); + } + // Edited speeds make a custom Bezier curve even though Linear is still the selected preset. + select_keys(&mut s, l, &[("transform/opacity", 1.0)]); + apply_typed(&mut s, win, "In-Out", [33.0, 2.0, 33.0, 2.0]); + let k = &prop(&s, l, "transform/opacity").keys[1]; + assert_eq!((k.in_interp, k.out_interp), (Interp::Bezier, Interp::Bezier)); +} From e1861419045376b13d17440bb0b0f6b585ca95dc Mon Sep 17 00:00:00 2001 From: Kristian Myram Date: Thu, 29 Oct 2026 19:37:43 +0100 Subject: [PATCH 3/3] #2465: start Linear preset regression with Bezier endpoint sides --- crates/script/src/tests/ease_presets.rs | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/crates/script/src/tests/ease_presets.rs b/crates/script/src/tests/ease_presets.rs index e9a9c8a0a..f075250b2 100644 --- a/crates/script/src/tests/ease_presets.rs +++ b/crates/script/src/tests/ease_presets.rs @@ -610,7 +610,7 @@ fn presets_saved_by_the_old_core_panel_carry_over() { } /// #2465: the Linear preset sets Linear interpolation on every side it applies to, including the -/// first key's out side and the last key's in side; editing its speeds makes a Bezier curve. +/// unused first-in and last-out sides; editing its speeds makes a Bezier curve. #[test] fn the_linear_preset_sets_linear_interpolation_and_edited_speeds_give_bezier() { let store = Arc::new(MemoryConfig::default()); @@ -620,9 +620,15 @@ fn the_linear_preset_sets_linear_interpolation_and_edited_speeds_give_bezier() { s.execute("prop.select", json!({"layer": l, "path": "transform/opacity"})).unwrap(); let win = open_panel(&mut s); // Start from Bezier keys so Linear has something to restore. - set(&mut s, win, "presets", json!("Ease In-Out")); + ok( + &mut s, + r#"var p = app.project.activeItem.layer(1).transform.opacity, K = KeyframeInterpolationType; + for (var i = 1; i <= p.numKeys; i++) p.setInterpolationTypeAtKey(i, K.BEZIER, K.BEZIER);"#, + ); let op = prop(&s, l, "transform/opacity"); - assert!(op.keys[0].out_interp == Interp::Bezier && op.keys[2].in_interp == Interp::Bezier); + for (i, k) in op.keys.iter().enumerate() { + assert_eq!((k.in_interp, k.out_interp), (Interp::Bezier, Interp::Bezier), "initial key {i}"); + } let steps = s.history.undo.len(); set(&mut s, win, "presets", json!("Linear")); assert_eq!(s.history.undo.len(), steps + 1, "one undo step");