Engine (mask.rs, tests in tests_timeline.rs incl. render + undo/redo):
mask.new, mask.addVertex, mask.setVertex, mask.setClosed (Layer > Mask and Shape Path >
Closed), mask.selectVertices, mask.moveVertices (merged drags), mask.deleteVertices
(Delete with vertices selected), mask.remove / mask.removeAll (Layer > Mask). Edits of an
animated Mask Path key the current time.
Viewer: Pen tool on the selected layer - click = corner vertex, drag = Bezier vertex,
click the first vertex to close, Esc/Enter or another tool ends the path; rubber band to
the pointer. Selection tool: click/shift-click mask vertices, drag selected vertices,
drag tangent handles (symmetric; Alt breaks). Vertices register automation ids
viewer.mask.<uid>.vertex.<i>. Mode/inverted/feather/opacity/expansion stay in the
timeline mask rows.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Viewer renders through the comp's 3D view (RenderOpts.view; FrameKey hashes
the view camera), shows the view name, and the bottom-bar 3D View dropdown
(automation id viewer.view3d) switches Active Camera/Front/…/Custom View 3.
- Orbit / Pan / Dolly tools drag the current view (camera layer in Active
Camera, merged into one undo step; view cameras otherwise).
- Handles, gizmo and picking go through the view camera; 3D layers move in
the view plane at their depth.
- Camera frustum + POI and light position/direction wireframes
(viewer.camera.<id>, viewer.light.<id>).
- Camera Settings / Light Settings dialogs open from New Camera/Light,
Camera/Light Settings and Layer Settings; OK runs the engine commands.
- Timeline: POI only for two-node cameras/auto-oriented lights; "Z Rotation"
label on 3D layers.
- Headless egui_kittest tests (UI wiring + opt-in wgpu snapshots); fix the
remaining workspace clippy lints.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Properties with an expression get an editor row in the timeline: Expression label,
enable (=) switch, pick whip, syntax-error warning, and a multiline code editor in the
time-graph area (commits on blur or Cmd/Ctrl+Enter via prop.setExpression).
- Expression pick whip: drag onto another property row -> prop.pickWhip (AE reference
expression). Parent pick whip in Parent & Link: drag onto a layer -> layer.setParent.
- Alt-click on a stopwatch starts with the property's own reference (transform.opacity).
- Timeline rows have variable heights; the empty-graph box-select area sits under the rows.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
engine comp.settings/comp.new: anchor (shifts unparented layers and their
position keys on resize), startTime/startTimecode, renderer.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Current time shown as AE does: 0:00:02:15 (hours unpadded; time::format_timecode_ae),
frame count zero-padded to 5 digits (00075 (29.97 fps)).
- Time ruler labels in seconds:frames (00:15f, 01:00f) with frame-based adaptive spacing.
- time.set snaps seconds to the nearest frame (2.5 s at 29.97 -> frame 75).
- Mode / Track Matte columns hidden until Toggle Switches/Modes (F4), as in AE's default.
- Timeline outline pane sized to its columns and clipped so Parent & Link never draws
over the time graph in narrow timelines.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Engine (all commands with undo/redo + tests in engine/src/tests_timeline.rs):
- keys.copy/paste (Edit Copy/Cut/Paste route to keys when keys are selected;
relative timing kept, paste at CTI, cross-property paste of same type),
keys.selectAll (Cmd+Alt+A), keys.nudge* (Alt+Arrow, Alt+Shift+Arrow),
keys.set / keys.setEase (graph editor drags), keys.info (dialog data),
keys.timeReverse; keys.interpolation gains continuous/auto Bezier, spatial
interpolation and roving; keys.velocity takes per-dimension values and
Continuous.
- Roving keys (keyframe::retime_roving): constant speed along the motion path.
- Layer > Time: layer.timeStretch (percent|duration, hold in/current/out),
layer.timeReverse (Cmd+Alt+R), layer.enableTimeRemap (Cmd+Alt+T),
layer.freezeFrame, layer.freezeOnLastFrame; render uses Time Remap as the
source time for precomp/footage layers.
- prop.separateDimensions (X/Y/Z Position; prop.set on Position writes them).
- layer.setParent compensates so the layer stays in place (compensate:false
to opt out).
- prop.pickWhip writes AE-style reference expressions (thisComp.layer(..),
effect(..)(..), mask(..).maskFeather, temp=…;[temp,temp], …[0]).
- prop.setExpression: syntax errors keep the text but disable the expression.
- expr: arrays of properties returned by an expression are resolved.
UI: Keyframe Velocity, Keyframe Interpolation and Time Stretch dialogs;
Graph Editor (value + speed graphs, draggable keys and Bezier/influence
handles, auto-zoom, fit, show selected, separate dimensions, hold/linear/
auto Bezier/Easy Ease buttons); key + layer context menus. Clears the
workspace clippy -D warnings failures.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- render: LayerCache (content-keyed processed-layer cache: source -> masks ->
effects, keyed by a hash of the layer's non-transform props evaluated at the
frame time, solid item, switches, scale; time folded in for clock-driven
effects / wiggle paths). Static and transform-only layers render once;
edits only re-render the edited layer. Session + UI frame jobs share it.
- effects: TIME_DEPENDENT list + test that every clock-reading effect is listed.
- raster: affine composite fast path (per-row span clipping, unchecked interior
bilinear, integer-translation copies, inlined Normal blend), checked against
composite_warp_reference; box/Gaussian blur without transposes, two
ping-pong buffers; accumulate_warp so motion blur sums into one buffer
instead of one full-frame image per sub-sample.
- ui: viewer frame is urgent and jumps the prefetch queue; stale-revision jobs
are dropped; paused prefetch waits for the viewer frame; "Frame Render Time"
reports viewer frames only; parallel f32 -> Color32 conversion.
- cli: `frame --bench N` (per-layer/per-effect timings, wall + CPU time) and
`frame --bench-play N` (consecutive frames with/without the layer cache).
- tests: cache transparency (scrub, edits of values/keys/effects/masks/
solids/text/timing), hit/miss accounting, time-dependent effects, demo
cached == uncached, fast warp/blur/accumulate == reference.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- Properties panel (panels/properties.rs): Layer Transform with keyframe navigator
or stopwatch, AE value formatting (integers, %, Nx+N° rotation), linked Scale,
Reset; Text (font/style/size/leading/tracking/stroke, fill/stroke toggles);
Paragraph (7 alignments); Text Animation > Add Animator; scrolling.
- Tabs name what they show: Composition <comp>, <comp> timeline, Effect
Controls <layer>, Properties: <layer>.
- Default workspace: full-height right column, Preview over Properties.
- engine: time.go nextKey/prevKey accept prop uid; layer.setText supports all
seven justify modes, applyFill/applyStroke and Auto leading (fixes the
Paragraph 'justify' button mapping to Justify All).
- examples/snapshot: render the real UI headless (egui_kittest + wgpu) with
scripted control-channel steps.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Layer table matches the real dependency graph; wasm check passes for all
L0-L4 crates and the egui UI.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Adds 105 effects in new modules (keying, matte, channel, blur2, color2, stylize2, noise, generate2, distort2, perspective, transition, utility) plus shared plane/morphology/guided-filter helpers in util.rs, with 96 new unit tests.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
