[Sidefx-houdini-list] DOP Impact

Edmond Earl Smith ees041000 at utdallas.edu
Tue Jan 8 16:23:00 EST 2008


I was under the impression that SOP solvers could only be used with 
particle deformers, and I'm not quite sure you can make an attribute in 
DOPS.

Gene Dreitser wrote:


>Are you caching the deforming wall via a sopsolver type arrangement?
>
>It should accumulate over time...
>
>G
>
>----- Original Message ----
>From: Edmond Earl Smith <ees041000 at utdallas.edu>
>To: sidefx-houdini-list at sidefx.com
>Sent: Tuesday, January 8, 2008 2:42:56 PM
>Subject: Re: [Sidefx-houdini-list] DOP Impact
>
>That still doesn't work. It only copies on one frame and then it goes 
>away.  I need it to stay there perpetually after the impact. 
>
>Gene Dreitser wrote:
>
>
>>You could try a switch sop to switch between a null and a point to
> copy 
>the metaball onto -- driving that with the record count of the impacts 
>data.
>>
>>Since the impacts are transitional, the data won't exist for every 
>frame, thus, when it exists, copy metaballs to points, and when it 
>doesn't, copy to null.
>>
>>Best,
>>
>>Gene
>>
>>----- Original Message ----
>>From: Edmond Earl Smith <ees041000 at utdallas.edu>
>>To: sidefx-houdini-list at sidefx.com
>>Sent: Tuesday, January 8, 2008 2:05:36 PM
>>Subject: [Sidefx-houdini-list] DOP Impact
>>
>>
>>Hey everyone, I'm referencing dynamic collision in SOPS.  Something 
>>bounces off of a wall and continues to fall to the ground.  I am 
>>referencing the RBD motion in SOPS and assigning it to a metaball so I
> 
>>can use a magnet to deform the wall.  The problem is I can't figure
> out
>> 
>>how to keep the metaball from continuing to follow the meta after 
>>impact.  I need the meta to stop at that precise location. I've tried
> a
>> 
>>number of different solutions but what it has really come down to is 
>>that I need a record of impact and location but these only last for
> one
>> 
>>frame.  Any suggestions on how to keep the impact data or different 
>>ideas of how to get the deforming meta to stop at impact leaving the 
>>wall dented for the rest of time?
>>
>>thanks,
>>Eddie
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>>
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