Hi Nathan, thank you very much for the information! I think this feature
would be an important addition for the scripting toolset, but as they wrote
it must be a lot of work. Looks like I have to find a workaround...
Thanks,
Gabor
On Wed, Nov 21, 2012 at 1:53 AM, Nathan Rusch <nathan_ru...@hotmail.com>wrote:
> Alright, so here’s the word from support:
>
> """
> Hi Nathan,
>
> What you are looking for is currently not possible, and is a "fair bit of
> work" according to Engineering when this subject was last brought up.
>
> There is a feature request for it called:
>
> Bug 31829 - Add ParticlePython node
> """
>
> I’m guessing the original request was somewhat more complex than what
> you’re after, but they would both require similar added functionality.
>
> -Nathan
>
>
> *From:* Nathan Rusch <nathan_ru...@hotmail.com>
> *Sent:* Friday, November 16, 2012 11:33 AM
> *To:* Nuke user discussion <nuke-users@support.thefoundry.co.uk>
> *Subject:* Re: [Nuke-users] lookup curve in particle expression
>
> Hmm, this is a bit of a tricky chicken-and-egg problem that I hadn’t
> noticed before.
>
> Basically, the particle channel variables aren’t available in the nested
> expression context(s) created by calling something like [expression
> {node.knob * id}], and they aren’t available as pure TCL locals. Combine
> this with the fact that you can’t reference knob names directly in particle
> expressions, and it doesn’t seem like there is currently a way to mix knob
> values with particle channel values.
>
> I’ve submitted a ticket to support, so I’ll update this with information
> as I get it.
>
> -Nathan
>
>
> *From:* Gabor L. Toth <glt...@gmail.com>
> *Sent:* Thursday, November 15, 2012 8:50 AM
> *To:* Nuke user discussion <nuke-users@support.thefoundry.co.uk>
> *Subject:* Re: [Nuke-users] lookup curve in particle expression
>
> Hi Nathan, thanks for the reply! Yes that is working, even in a particle
> expression. But, when I try to use the "id", or other particle attribute,
> it doesn't react when changing the lookup curve. What is the correct syntax
> to use those?
> I'm using this:
> [expression ColorLookup.lut.master([id/100])]
>
> This doesn't give an error, but looks it gives the default 0-1 curve, even
> when the lookup curve is modified.
> What could be the problem?
> Thanks,
> Gabor
>
>
>
> On Wed, Nov 14, 2012 at 8:27 PM, Nathan Rusch <nathan_ru...@hotmail.com>wrote:
>
>> [expression lookupnode.lut.master(xVal)]
>>
>> e.g.
>>
>> [expression myLookup.lut.master(.25)]
>>
>>
>> -Nathan
>>
>>
>> *From:* Gabor L. Toth <glt...@gmail.com>
>> *Sent:* Wednesday, November 14, 2012 8:19 AM
>> *To:* Nuke user discussion <nuke-users@support.thefoundry.co.uk>
>> *Subject:* [Nuke-users] lookup curve in particle expression
>>
>> Hi,
>> can I use somehow the result of a lookup curve at a given value, in a
>> particle expression?
>> I would like to control the absolute position of a group of particles
>> according to the curve, and by particle id. Something like particle curve
>> node, but not by time, but id.
>> Tcl expression [value lookupnode.lut.master] always gives a constant
>> value. I tried with python [python lookupnode['lut'].getValueAt(
>> [id/maxNumber] )] but this behaves very strange: doesn't give an error, but
>> not really doing what I want (not changing if I change the lookup curve)
>> What could be a proper syntax?
>>
>> Thanks,
>> Gabor
>>
>> ------------------------------
>> _______________________________________________
>> Nuke-users mailing list
>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>
>> _______________________________________________
>> Nuke-users mailing list
>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>
>
>
> ------------------------------
> _______________________________________________
> Nuke-users mailing list
> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
> ------------------------------
> _______________________________________________
> Nuke-users mailing list
> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
>
> _______________________________________________
> Nuke-users mailing list
> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
_______________________________________________
Nuke-users mailing list
Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
