Pose Studio: sliders reset to nonsensical values when reselecting a posed bone #553

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opened 2026-10-08 07:39:24 +00:00 by sky_line · 1 comment

sky_line commented

2026-10-08 07:39:24 +00:00

Owner

Owner report: "sliders in pose studio reset to nonsensical values when clicking from one bone back to another you've already posed".

Repro: pose bone A, select bone B and pose it, click back to A. A's azimuth, elevation and twist sliders (and position and scale) show values that don't match what was set.

Likely causes:

The controls are refilled by decomposing the bone's current rotation, which can come back as a different but equivalent set of angles (±180° flips, wrap-around).
The current rotation may be read from the live joint (mid-blend or with animation layered in) instead of the studio's own target.
Slider callbacks may fire while the controls are being refilled, and write the values back.

Fix:

Keep per-bone control values as the source of truth.
Refill from them when a bone is selected.
Use a decomposition that round-trips exactly, only for bones that were never edited.
Suppress write-back while refilling.
Keep this consistent with loading poses, undo/redo, sequences and pose sync (#531).

Done when: reselecting a posed bone shows exactly the values last set, and never changes the pose.

**Owner report:** "sliders in pose studio reset to nonsensical values when clicking from one bone back to another you've already posed". **Repro:** pose bone A, select bone B and pose it, click back to A. A's azimuth, elevation and twist sliders (and position and scale) show values that don't match what was set. **Likely causes:** - The controls are refilled by decomposing the bone's current rotation, which can come back as a different but equivalent set of angles (±180° flips, wrap-around). - The current rotation may be read from the live joint (mid-blend or with animation layered in) instead of the studio's own target. - Slider callbacks may fire while the controls are being refilled, and write the values back. **Fix:** - Keep per-bone control values as the source of truth. - Refill from them when a bone is selected. - Use a decomposition that round-trips exactly, only for bones that were never edited. - Suppress write-back while refilling. - Keep this consistent with loading poses, undo/redo, sequences and pose sync (#531). **Done when:** reselecting a posed bone shows exactly the values last set, and never changes the pose.

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2026-10-08 07:39:24 +00:00

sky_line added this to the Slipstream project

2026-10-08 07:39:24 +00:00

sky_line referenced this issue from a commit