[Sidefx-houdini-list] using $AGE for size.

jacob fisher jacobfshr at gmail.com
Thu Feb 18 12:27:00 EST 2010


Thanks,
I knew it should be a simple solution.

I really appreciate the fact it took me longer to write the email than
for me to get a great response.


On Thu, Feb 18, 2010 at 12:23 PM, Spencer Lueders
<Spencer.Lueders at framestore.com> wrote:
> After your popnet, before your copy SOP, put a point SOP down. Put $AGE in the Particles Tab > Pscale parameter.
>
> You could do it inside your particle sim using a Property POP > Misc Tab > Pscale, but that would require you to re-sim your particles each time you need change your scale.
>
> ----- Original Message -----
> From: "jacob fisher" <jacobfshr at gmail.com>
> To: sidefx-houdini-list at sidefx.com
> Sent: Thursday, 18 February, 2010 12:18:08 PM
> Subject: [Sidefx-houdini-list] using $AGE for size.
>
> Sorry I don't currently have Houdini available in front of me, but I
> want to create a simple scene where I have spheres copied onto a
> particle network.
>
> As the particles age, want the spheres to increase in size.
>
> My initial thought was I could just use $AGE for metaball radxyz.
>
> However, because of the set up, metaball popnet copy, I can't use $AGE, can I?
>
> Should I set up a Null in my particle network and pull that $AGE
> attribute with ch("../popnet/null/$AGE") or something like that?
>
> Hopefully this is a real basic problem I'm over/under thinking.
>
> -jake
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> --
> Spencer Lueders
> Technical Director
> Framestore NY
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