[Sidefx-houdini-list] Flip collision in normal direction only?

Dominik Kirouac dk at shedmtl.com
Mon Feb 24 07:45:29 EST 2014


Thanks nick, I will give it a try right now :).

*Dominik Kirouac // SHED **
*FX Artist
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Le 24/02/2014 7:38 AM, Nick Nimble a écrit :
> Hi Dominik,
>
> How about splitting it into two simulations? You can source the fluid 
> from your desired location outside the sphere, when particles collide 
> with the sphere you kill them. Then in SOP's you build a new source 
> from the particles that die on the current frame, but slightly 
> displaced by the normal of the sphere, so they are inside. Then in the 
> second simulation you can source from those points and have this fluid 
> collide with the inside of the sphere.
> The cool thing about this, is that it can work in any situation with 
> any piece of enclosed geometry :-)
>
> Cheers,
> Nick, be Nimble
> -- 2014 the year where things become clearer --
> +31 622 4243 94 | www.nicknimble.com | www.facebook.com/nicknimble
>
> On 24/02/14 13:30, Dominik wrote:
>> Hey list,
>>
>> Is it possible to make flip collide but only from the normal 
>> direction. Let me explain. Ie: I want to pour liquid from the outside 
>> of a sphere, but when the liquid enter the sphere, I want it to start 
>> colliding with the sphere interior.
>>
>> I'm thinking about giving a group to particles inside the collision 
>> object and use this group in my static object. But I'm not sure it 
>> will work because the collision is apply to the flip object and not 
>> per particle. I will try some ideas today, but if you think to a 
>> solution, let me know.
>>
>> Thanks
>>
>> Doum
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