yade-users team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

> If one does not include in the contact law to request the erase of the 
> interaction for a certain condition, the interaction being real will 
> always remain such. Is this right? Is this design thought to 
> facilitate the implementation of cohesive laws?
Yes, and other distant laws too.
> In my mind I was thinking I would assign to the collider the care of 
> maintaining real an interaction or not.
In previous versions, you could switch on/off automatic deletion 
handling inside the collider (even before, there was no switch and the 
collider was _always_ erasing distant interactions). It could be set 
back that way probably, but it doesn't really change the problem : the 
user has to keep in mind to put "requestErase" in his law, in one case, 
OR he has to remember to set collider->eraseDistant =true in his 
simulation in the other case.

> For laws that need adhesion/cohesion in the normal/shear direction we 
> can still play in the contact law having enlarged bounding boxes. 
> Would not be the same?

Enlarging bboxes gives cpu time penalty (more virtuals), it is better to 
not enlarge and requestErase in functors.

Bruno