Dragging an object in the Composition tab's picture writes the copy
of the composition at the playhead and asks for a preview once a
frame. The tab answered every such preview by building that copy
again from the composition, which still held the old value. So the
object stood still while dragged, and a move often did nothing at
all, because its end was read from a copy that had just been rebuilt.
Values typed in the inspector were not affected.
- SceneViewport gets editing(), which says whether a gesture of this
view is under way: a drag, a size or turn handle, a polygon corner,
a joint anchor or a tilemap stroke.
- CompositionCanvas leaves its copy alone while such a gesture sends
its frame previews. The command at the end writes the composition
as before, and the copy is built again from it.
Tests:
- tsc, eslint and Prettier are clean.
- e2e 69 on melektaus-atx: ALL PASSED, 16 checks, 69l is new. An item
dragged 60 px to the right stands at +60 px while the button is
still down (590 to 650) and has x = 60 in the model afterwards.
- Counter-check: rebuilding the copy on every preview again turns 69l
red. The item stays put while dragged and x is 0 after letting go.
- Gate on melektaus-atx: green, 305 files, 4714 tests.
- Turning and scaling by the handles were not tried in the browser.
They take the same path and editing() covers them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
adminandClaude Opus 5.5
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