[Sidefx-houdini-list] Flamethrower effect help?

Raymond Chua raylistic87 at gmail.com
Mon Aug 2 12:07:30 EDT 2010


Hi Jens,

I have seen your test and it looks interesting!
Look forward for your scene file! :)

Thanks!

Regards,
Ray

On Mon, Aug 2, 2010 at 5:03 PM, Jens Martensson
<jempamartensson at gmail.com>wrote:

> Hi I saw your post on odforce last week.
> Been to busy working, but I did a quick test yesterday.
>
> http://vimeo.com/13817968
> I will post the file on odforce tonight .
>
> I think much of the effect is in the motion.
> Mine is far from perfect, but it's a start.
>
> I use particles to drive volume all the time, so in this example
> I have particles emitting fluid which has speed of 1 (arbitrary number) and
> the I have particles with double 2 which blows thru
> the fire to have that spitting effect.
>
> Hope this will help a bit
>
> Cheers
> Jens
>
>
>
> 2010/8/2 François Duchesneau <sidefx at trinix.ca>
>
> > I cannot really help regarding Pyro but I'm about to create a fire
> > explosion shot in slow motion and I will do my first R&D with particles
> > with a Particle Fluid Surface followed by a deformation based on the
> > normal. On this you apply a shader where the opacity is driven by the
> > facing ratio. The smoke is actually the same simulation and surface as
> > the fire but you use only the alpha in comp and tint it with a black
> color.
> >
> > You can have a look on a test I did at home. www.trinix.ca and go under
> > the demo section to the fire skull.
> >
> > It may not be a good way to go for a flame thrower but it can give ideas
> > maybe to complement your main effect or just the smoke etc. Maybe I'm
> > wrong to take that path but the reason why I want to try it this way is
> > to have more control. You can more easily shape the fire I think.
> >
> > François
> >
> > Raymond Chua wrote:
> > > Hi guys,
> > > Recently, I am trying to create a flamethrower effect in Houdini but I
> > faced
> > > a few issues.
> > >
> > > I am trying use pyro tools to create the effects and I have 2 questions
> > for
> > > now.
> > > How do I get the flames to turn into smoke after a certain frames, rise
> > up
> > > in the air and vanish?
> > >
> > > I understand that the pryo solver uses a layer for fire and another for
> > > smoke.
> > >
> > > Another question is that since my flamethrower effect is coming off
> from
> > a
> > > "gun", how to make it so that it looks like it is "shooting out"?
> > >
> > > Hopefully, someone can give me some assistance. Thanks! =)
> > >
> > > Regards,
> > > Ray
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-- 
Raymond Chua | Computer Graphics Artist |



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