A roving key passes speed straight through: the engine keeps both its
sides linear whenever the keys are edited (retime_roving), so an ease set
on one never plays. The panel still counted it as eased, so a selected
roving key showed "Eased 1 keyframe(s)" and stayed linear. The previous
pair-only panel did the same to a pair holding a roving key.
Selected roving keys are now left out of the work and counted. The
status names how many were skipped and that turning off Roving lets them
ease; when nothing else was selected, nothing changes and no undo step
opens. Fixed keys next to a roving key still ease.
The panel eased only pairs of neighbouring selected keyframes, so a single
selected key (or keys that aren't neighbours) changed nothing.
An Ease selector (In, Out, In-Out; In-Out by default) now chooses the
sides of each selected key to ease. In eases a key's incoming side with
the curve's in side, Out its outgoing side with the curve's out side. A
side is eased when it has a neighbouring key, selected or not; the
neighbour is left as it is. Each side's speeds scale to the segment on
that side, so a key between a +100/s and a -40/s segment gets each its
own. The side not eased keeps playing as it did (easeSide, unchanged).
Sides are measured before any key changes, and no undo step opens when
no selected key has a segment on the chosen side; the status says which
neighbour is missing. A selected pair in In-Out still gets the whole
curve; its outer sides now ease too when they face an unselected key.
From Keys still reads the curve of a selected pair.
The Ease Presets panel (#254) is modelled on a third-party panel, so,
as with third-party tools in After Effects, it isn't core any more: it
is `extensions/scriptui-panels/Ease Presets.jsx`, a ScriptUI panel
bundled as an optional extension (Window ▸ Ease Presets.jsx), written
only against the public scripting API. Clicking a preset eases every
pair of neighbouring selected keyframes in one undo step (per
dimension, along the motion path for spatial properties, the keys'
other sides as they play); the fields edit the working curve, which the
panel draws; From Keys, Save, Rename and Delete as before. The twelve
built-in curves are unchanged.
Scripting API fixes it needed (After Effects parity):
- `app.settings` lasts between runs (`script_settings.json` in the
settings folder; `script.settings.get` / `script.settings.save`).
- Per-key methods (`setTemporalEaseAtKey`, `setInterpolationTypeAtKey`,
`removeKey`, the continuous / auto-Bezier / roving setters) no longer
change the user's key selection (they selected the key they edited).
- `keyInTemporalEase` / `keyOutTemporalEase` report linear and
auto-Bezier sides as they play, `keyIn/OutSpatialTangent` the
tangents the motion path plays.
- `selectedProperties` includes the properties of selected keyframes.
- `isInterpolationTypeValid` is false for Linear / Bezier on values that
only hold.
Removed from core: Window ▸ Ease Presets, the `keys.easePreset.*`
commands, `engine::ease_presets` and the `ease_presets.json` store,
`keyframe::EaseCurve` (nothing else used it) and the egui panel. User
presets saved by the v0.6.0 panel move into the panel's app.settings
section the first time settings load (the old file is left as is).
Docs: plugins.md (bundled extensions), parity.md, gaps.md G8, agents.md.
Test: app_settings_last_between_runs,
per_key_methods_keep_the_key_selection_and_report_eases_as_they_play,
spatial_tangents_are_reported_as_the_path_plays (each fails before),
the_ease_presets_panel_eases_every_selected_pair_in_one_undo_step,
a_typed_curve_scales_to_each_dimension_and_follows_motion_paths,
user_presets_save_rename_delete_and_persist,
presets_saved_by_the_old_core_panel_carry_over (script, through the
panel's controls), ease_presets_panel_eases_the_selected_keys_from_its_list
(UI: the panel docks and a click on a preset eases the keys).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
tylerjenningsw