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Message #08607
[Bug 1001194] Re: No interactions after erasing body
Fixed in b92389065
** Changed in: yade
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1001194
Title:
No interactions after erasing body
Status in Yet Another Dynamic Engine:
Fix Released
Bug description:
Hi all,
I've got a fairly simple script to build some ballistic aggregates
which I will use in later simulations. I basically started with a seed
particle at the origin, which has dynamic=False and then create
particles and fire them randomly towards the aggregate. When contact
is detected (O.interactions.countReal() increases in my collision
checking callback) I freeze that particle (setting dynamic = False)
and create a new one.
This basically works OK. But I have to check for particles that miss
the aggregate. So in my collision checking callback, if there has been
no increase in interactions, and if I am far from the seed particle, I
erase the particle with O.bodies.erase.
This is where things seem to behave unexpectedly. I erase the
particle, and a few timesteps later create a new one. This takes the
same ID as the deleted one. But now, no interactions are ever detected
- even when the particles pass through each other! Does O.bodies.erase
not do what I think it does?
Any suggestions welcome!
Thanks, Mark
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