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RBD particles strange sim behaviour


Anesthaesia

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Hi all,

I have a very basic RBD setup with a pop force applied. Everything works as expected, but I have some random particles appearing during the sim that do not have point numbers and I cannot figure out what is causing them.

I found that decreasing the scatter count to 1000 eliminates them, but they appear when that is increased to 2000.

I thought they may be anomalies due to something like interpenetrating geo at the point of creation, but an intersection analysis does not show that any are intersecting.

Most of all I'm just curious why they don't show up when points/ptnumbers are displayed in the viewport in order to identify them in the spreadsheet.

Any help would be appreciated in pointing me in the right direction.

 

I have attached the file - if you run the sim to around frame 100 you should see these particles floating on the perimeter but do not show as points in the viewport.

RBD_Spheres_points_missing.hip

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