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fix(cursor): land the flat cursor on each click, and smooth less by default - #1336
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…efault Click effects (bounce, impact ring, ctx.clicks) sit on the raw click point, but the flat sprite was drawn on the smoothed spring, which trails the pointer by ~190 ms at the 0.67 default: on a click right after a move the effects landed up to 150 px beside the cursor. The flat sprite now uses pinned_at like the 3D cursor, so the drawn tip, ctx.cursor and ctx.clicks meet at every click whatever the smoothing. pinned_at also starts a click's approach only after the previous click's hold, so two clicks 200 ms apart each get the tip on their own point. New projects default to 0.3 smoothing (~95 ms of lag).
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Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation |
|---|---|---|
| Title check |  |
The title clearly identifies the two main changes: the flat cursor lands on each click, and the default smoothing is reduced. |
| Description check | |
The description covers the required sections, explains the cursor and smoothing changes, identifies the related issue, marks the change as a patch bug fix, documents platform impact, provides visual e… |
| Docstring Coverage | |
Docstring coverage is 85.71% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files. |
| Linked Issues check | |
Check skipped because no linked issues were found for this pull request. |
| Out of Scope Changes check | |
Check skipped because no linked issues were found for this pull request. |
Full details: Description check
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Explanation
The description covers the required sections, explains the cursor and smoothing changes, identifies the related issue, marks the change as a patch bug fix, documents platform impact, provides visual evidence, and reports testing results and limitations.
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Actionable comments posted: 1
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @crates/compositor/src/cursor.rs:
- Line 384: Update the successive-click timing calculation in the `Some(p)`
branch to shorten the first click’s hold when the gap is under 100 ms, then use
the available gap for the second approach instead of clamping it to 1 ms. Add a
test covering distinct click points less than 100 ms apart.
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crates/compositor/src/cursor.rscrates/compositor/src/frame_geometry.rssrc/lib/projectDefaults.ts
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…proach Two clicks on distinct points under 100 ms apart cut the second approach to 1 ms, so the tip jumped between them in one frame. Under twice the hold, the hold and the next approach now split the gap evenly.
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Summary
CursorTrack::pinned_at, like the 3D cursor: the drawn tip,ctx.cursor,ctx.clicks, the bounce and the impact ring meet at every click, whatever the smoothing.pinned_atstarts a click's approach only after the previous click's hold, so two close clicks each get the tip on their own point.Related issue
Part of #1335
Type of change
Release impact
Desktop impact
Screenshots / video
Measurement in #1335: on a scripted demo take, the drawn cursor sat 106 to 150 px from the click at the 0.67 default. With this change it is under 0.5 px at the click and during the hold.
Testing
the_flat_cursor_lands_on_the_click_under_smoothing: drawn tip,ctx.cursorandctx.clickswithin 0.5 px at 0, 40 and 100 ms after a click, smoothing 0 / 0.3 / 0.67 / 1.cargo test -p openscreen-compositoron Windows: 459 passed, 1 failed. The failure,playback_off_the_end_of_the_programme_stays_on_the_last_clip, fails onmaintoo without this change.t.🤖 Generated with Claude Code
Summary by CodeRabbit