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IDProjectCategoryView StatusDate SubmittedLast Update
0008861opensim[REGION] OpenSim Corepublic2021-02-08 05:142021-02-08 20:00
ReporterFerd Frederix 
Assigned To 
PlatformOperating SystemOperating System Version
Product Version 
Target VersionFixed in Version 
Summary0008861: Linked prim positions change when linked or unlinked.
DescriptionA friend, Laura Ess, has issues building in her grid because prims and whole linksets sometimes "explode" when linked or unlinked. That is, the prims will change position after such an action (usually on two axis), This has been driving her nuts for over a year because there seems to be inconsistent.
Steps To ReproduceI've uploaded her test IAR with three test linksets, images, and instructions.

Import the IAR to one of your avatars (it should put everything in /TEST-LINKSETS) and play around editing copies of them. Linking and Unlinking seems to be what does the damage.

Three different build types all linked to a sculpted root, which may be relevant.
Additional InformationThis a reduced version of the original, which had floors and walls in it, and had about 350 prims in it. The Root was a central floor prim, but the root must have changed as she started stripping prims off by unlinking them one prim at a time. Her theory was that there was a "dud prim" in the linkset causing this. It still had the issue when the root was the floor prim.

It was over 256 prims in size. She had read a while ago that Opensim can handle up to 1023 prims in a linkset, provided they're all in the same region. But perhaps that was a statement of optimism rather than fact, she has been using large sized Linksets. The issue hasn't happened with 'most' of the others. But 'most' of those aren't linked with sculpties either.
TagsNo tags attached.
Git Revision or version numberVersion #70e00a00ec (fix creators user cache, 2021-01-07
Run Mode Grid (1 Region per Sim)
Physics EngineBulletSim
Script EngineXEngine
Mono VersionNone
Attached Filesjpg file icon 21-02-05_001.jpg [^] (38,565 bytes) 2021-02-08 05:14

- Relationships

-  Notes
Ferd Frederix (reporter)
2021-02-08 05:16

IAR is located at [^]
mewtwo0641 (reporter)
2021-02-08 16:07

I have noticed this myself as well; it has happened on link sets with far less than 256 prims. My most recent encounter with this was on a linked object that had only 10 prims.

My observation on this has been that it seems to matter whether what order you select the root prim (if the root prim is involved) when selecting individual links. Although I can't remember if it was root prim selected first or last that mattered.
UbitUmarov (administrator)
2021-02-08 20:00

those objects are filled with invalid rotations (not normalized)
added code wasting a bit of cpu normalizing them
please test

- Issue History
Date Modified Username Field Change
2021-02-08 05:14 Ferd Frederix New Issue
2021-02-08 05:14 Ferd Frederix File Added: 21-02-05_001.jpg
2021-02-08 05:16 Ferd Frederix Note Added: 0037545
2021-02-08 16:07 mewtwo0641 Note Added: 0037546
2021-02-08 20:00 UbitUmarov Note Added: 0037547

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