Prim Drift

[Pamela Galli]

I used to have a terrible time with prim drift -- with walls changing position or rotation a tiny bit (but enough to create seams) - - but then the issue seemed to disappear.

 

Until recently. The house I am working on now, every day I have to fix rotations in many prims, unless I lock down the house overnight.

Does anyone have any idea whether my perception is correct -- that this problem has recently appeared after a long absence?  And if so, why?

[Nova Convair]

Happens on every sim restart. Usually a fraction of a mm (millimetre).
I once had a problem that forced me to make an "unsharp" compare of positions/rotations that I use in scripts now.
I made tests and restarted the sim a few times to verify.

The reason? I can only guess that there is a different resolution or a conversion of the float variables used for saving the sim and when the sim operates.

 

[Pamela Galli]

Thank you Nova. That may be the explanation, but I don't think my Magnum sims have been restarted this week. And I don't recall seeing so much prim drift in years -- every day I fix the same floor prim, for example.

[Nova Convair]

The drift by restart is small and goes back and forth. So in the long term things hold their positions - kind of.

I never encountered bigger moves. You sure no script rattles at your prims?

You can drop in a script that adds an entry everytime the position changes and how much. Checking every few mins is sufficient. Maybe the time of the movements will give you a hint?

[Pamela Galli]

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Nova Convair wrote:

The drift by restart is small and goes back and forth. So in the long term things hold their positions - kind of.

I never encountered bigger moves. You sure no script rattles at your prims?

You can drop in a script that adds an entry everytime the position changes and how much. Checking every few mins is sufficient. Maybe the time of the movements will give you a hint?

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Oh that would be interesting!  At least it would prove I am not imagining it haha!