[Sidefx-houdini-list] HOW: FLIP fluid inherit emitter velocity

Alvaro Castaneda varomix at gmail.com
Thu Apr 5 10:47:00 EDT 2012


Thanks guys
that was it Jeff  thanks





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On Thu, Apr 5, 2012 at 7:10 AM, Jeff Wagner <jeff at sidefx.com> wrote:

> H12 from the shelf set-up uses the new Fluid Source SOP set to FLIP Source
> preset to construct the volume primitives which are then sourced directly
> by the FLIP DOP sim without using POPs. All shelf set-ups avoid POPs btw.
>
> You need to feed in "v" velocity point attributes in to the Fluid Source
> SOP and then ensure that the velocity volumes are being built with actual
> vel data.  Use the visualization options on the Fluid Source SOP to make
> sure you get the correct surface and vel volumes. Tweak as necessary. I
> haven't done a sim in the last few weeks where I didn't want to tweak the
> Fluid Source SOP to customize the emitter in some way. Sometimes I want a
> solid emitter and not the default hollow emiter, etc.
>
>
> -jeff
>
>
> On 04/04/2012 7:28 PM, Michael Dunkley wrote:
>
>> Haven't looked in 12, but in 11 the conversion is done in a sopnet
>> within the flip configure object.  The default input type, "surface
>> sop", runs the geo through a "points_from_volume" that doesn't
>> maintain attributes.  If you punch into the sop network that does this
>> conversion - dopnet/flipfluidobject/**particlefluidconfigureobject/**
>> convert_to_particles
>> - you should be able to unlock the nodes and attribute transfer the
>> velocity back on - just pull the vel from "switch2" and apply it after
>> "points_from_volume1".
>>
>> hth
>> -mike
>>
>>
>> On 4/4/12, Alvaro Castaneda<varomix at gmail.com>  wrote:
>>
>>> Hey guys
>>>
>>> I'm trying this but can't make it work
>>>
>>> How to I make FLIP particles inherit some of the emitter's velocity?
>>> The emitter is moving, and the particles just fall down without any
>>> influence from the emitter.
>>>
>>> Thanks
>>>
>>>
>>>
>>>  *.:varomix:.*
>>> MIX Studio
>>> 3D Artist/Generalist TD
>>> www.varomix.net
>>>   My profiles: [image: LinkedIn]<http://www.linkedin.**com/in/varomix<http://www.linkedin.com/in/varomix>
>>> >
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