[Sidefx-houdini-list] Bacteria growth

François Duchesneau sidefx at trinix.ca
Tue Mar 22 13:08:36 EDT 2016


You probably want to use bullet packed primivite sim instead of the old 
fashion rbd. And if this is the case then you can simply create an 
attribute initialized to 0 on the first frame and then age it every 
frame inside a sop solver.

Francois

On 03/22/2016 12:59 PM, Zoran Arizanovic wrote:
> yes it is a bit schematic
> maybe if this is initial state for FEM and then do the organic wiggly
> collision in DOPs
> good luck
>
>
> Zoran Arizanovic
> LinkedIn <http://www.linkedin.com/pub/zoran-arizanovic/4/177/295>
>
>
> On Tue, Mar 22, 2016 at 5:56 PM, Gerbrand Nel <g at cannonballbunny.com> wrote:
>
>> Hi Zoran
>> Thanks for the link. There are some things in there I could use, but it
>> doesn't look like his "germs" are properly colliding, and pushing each
>> other outwards.
>> My client is unfortunately very specific about that part of the brief.
>> I need to figure out how to get animation driven by age on a RDB.
>> The idea is to grow each germ until it is ready to divide, Then find a 2/3
>> position along the length of that germ, and spawn a new one, a 1/3 of the
>> originals length. At the same time I would pop the original germ back to
>> 2/3 its size.
>> The collision combined with the division of germs is what pushes them out
>> to spread.
>> G
>>
>> On 22/03/2016 18:22, Zoran Arizanovic wrote:
>>
>>> check this out
>>> https://www.youtube.com/watch?v=yXHZoZItwag
>>>
>>> I know its russian language but it is doable i dont know russian , just a
>>> bit of houdini and could finish it
>>> hope this helps
>>>
>>>
>>> Zoran Arizanovic
>>> LinkedIn <http://www.linkedin.com/pub/zoran-arizanovic/4/177/295>
>>>
>>>
>>>
>>> On Tue, Mar 22, 2016 at 1:30 PM, Gerbrand Nel <g at cannonballbunny.com>
>>> wrote:
>>>
>>> Hi guys
>>>> I have to create a system to visualize Bacterial growth.
>>>> Kinda like this, but we will need to be allot closer, so I cant cheat
>>>> much.
>>>>
>>>> https://www.youtube.com/watch?v=gEwzDydciWc
>>>>
>>>> My initial idea was to use a RBD solver to get the spawning objects to
>>>> interact with each other.
>>>> At he the bottom of this thread, there is a good starting point.
>>>>
>>>>
>>>>
>>>> http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=31855
>>>>
>>>> I would like to these shapes to grow over their age, but I have no idea
>>>> how to create an age attribute on a RDB, or how I would even wire that
>>>> up.
>>>> Any ideas would be welcome :)
>>>> Thanks
>>>> G
>>>>
>>>>
>>>>
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