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Repaint the stage after edits that move the selection; onion any symbol

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The player's tracker derefed its inputs one by one inside `ratom/run!`. An
edit that also changed the selection ran it from the selection's change: it
read `::render/shown` while still stale, then pulled the dirty
`::render/clip`, which re-ran it nested with the new resolver — and the outer
run, finishing last, wrote the old one back. A deleted layer stayed on the
stage until something else ran the tracker. The snapshot is now one sub, so
the tracker derefs a single clean input and is never re-entered.

Onion skinning only ghosted cels in `:display :lane` symbols, so a drawing
made of keyed shapes showed nothing. A ghost is now just the picture the
resolver draws n frames back and ahead, limited to the selection when there
is one. The scope setting is gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Olive Vaughn 2026-10-04 18:35:04 -04:00
parent 78fb120edd
commit 8d20097e61
5 changed files with 80 additions and 141 deletions
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8
frontend/test/browser/onion.mjs
View file

@ -117,9 +117,9 @@ try {
const ctx = document.querySelector('canvas.onion-skin').getContext('2d');
return [10,20,30].map(x => Array.from(ctx.getImageData(x,10,1,1).data));
})()`);
assert(pixels[0][0] > pixels[0][2] && pixels[0][3] > 0, 'previous cel is red');
assert.equal(pixels[1][3], 0, 'current cel is excluded');
assert(pixels[2][2] > pixels[2][0] && pixels[2][3] > 0, 'next cel is blue');
assert(pixels[0][0] > pixels[0][2] && pixels[0][3] > 0, 'the previous frame is red');
assert(pixels[1][2] > pixels[1][0] && pixels[1][3] > 0, 'the next frame is blue');
assert.equal(pixels[2][3], 0, 'two frames ahead is not ghosted at after=1');
const playbackAlpha = await evaluate(`(() => {
const c=cljs.core, k=c.keyword;
c.swap_BANG_(re_frame.db.app_db, db => c.assoc_in(db,c.vector(k('playback'),k('playing?')),true));
@ -137,7 +137,7 @@ try {
})()`);
assert.deepEqual(preferences, [false,true], 'preferences are remembered per symbol');
assert.equal(errors.length, 0, JSON.stringify(errors));
console.log('PASS: onion controls, ghost colors, current-cel exclusion, playback hiding, per-symbol preferences');
console.log('PASS: onion controls, ghost colors, frames either side, playback hiding, per-symbol preferences');
} finally {
if (ws?.readyState === WebSocket.OPEN) ws.close();
chrome.kill('SIGTERM');