Particle alpha woes 2005-05-16 - By Dan Yargici
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Yes indeed, me too... rather groovy.
Thanks.
DAN
Scott McGinley wrote:
>Eric,
>
> I'm really digging your epiphany. That certainly can
>be very useful in many different situations. I know
>that I will start using it right away.
>
>Scott
>
>
>--- Eric Lampi <ericlampi@(protected)> wrote:
>
>
>
>>Hey Dr. Jones!
>>
>>It's a problem, we've had this happen before haven't
>>we? *cough* Sky Captain*cough* :).
>>
>>I had some epiphanies lately and I was working on a
>>some tutorials, one of them addresses some of those
>>issues you're having, so rather than make you wait,
>>take a look at the enclosed scene.
>>
>>It allows you to override and make RGB Chroma mattes
>>on a per emitter basis as opposed to per ptype.
>>
>>I am using Colormap to drive the color from the
>>emitter using a small image tiles of 100% Red,
>>Green,
>>or Blue.
>>
>>If you open the FXtree, you'll see I have the images
>>piped into a colorpaste node. You can use whatever
>>you'd like, color correct, tint etc... The point is
>>you can control the color output via the FXTree.
>>Turn
>>some red, some blue, black even if you want
>>occlusion.
>>
>>I don't think it's hard to imagine how you could use
>>that for a lot of other FX too. The best thing
>>about
>>it is that you don't have to manage a truckload of
>>Ptypes that basically have the same behavior, but
>>need
>>to be separated out somehow.
>>
>>I have an override on the emitters colormap
>>checkbox,
>>so that you can have a beauty pass and RGB matte
>>pass.
>>The only drawback to this is you would need to
>>resimulate to get the color to change. I am sure
>>you
>>can write a brilliant little script that would
>>rename
>>and resimulate for each pass and reference those PTP
>>files during render.
>>
>>Anyway, I hope it helps.
>>
>>Eric
>>
>>Freelance 3-D Animator, F/X Artist, Particle Man
>>
>>
>
>
>
>>ATTACHMENT part 2 application/x-zip-compressed name=paticle-Test.zip
>>
>>
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