yade-users team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

I mean just for now.

Anton



On Fri, Nov 19, 2010 at 12:15 PM, Anton Gladky <gladky.anton@xxxxxxxxx>wrote:

> What if if do so in Translation/Rotation engines?:
>
> if (!b->isDynamic())    b->state->pos+=dt*velocity;
>
> Anton
>
>
>
> 2010/11/19 Václav Šmilauer <eu@xxxxxxxx>
>
> OK, after some thinking and skyping w/ Chiara:
>>
>> I will remove displacements and rotations in ForceContainer, and replace
>> them by one-time velocity and angularVelocity: they will be added to
>> state->vel and state->angVel in NewtonIntegrator, but reset by
>> ForceResetter; and they can accumulate, just like forces do.
>>
>> Further, Body::isDynamic will change its meaning to be simply
>> state->blockedDOFs=State::DOF_ALL. Remembering that blockedDOFs block forces
>> (not displacements per se), therefore, "non-dynamic" bodies _will_ be moved
>> by NewtonIntegator if they will have non-zero velocity! That might break
>> existing simulations, but now is the right period to do that (and see also
>> shamefully long-lasting https://bugs.launchpad.net/yade/+bug/398089). I
>> will also modify TranslationEngine accordingly, and will add regression
>> tests to make sure two TranslationEngines can be combined and so on. That
>> will ensure that the behavior will be consistent in the future.
>>
>> Comments (besides that it should not change because it will break old
>> simulations, please; run those with frozen version of yade)? (->yade-dev)
>>
>>
>> Cheers, v.
>>
>>
>>
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>
>