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PI3 with 3D

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Todd Groves
PI3 with 3D
on Apr 11, 2005 at 9:05:59 pm

Hey Aharon,

I just watched your excellent tutorial on using PI3 with 3D. Could you tell me which particle library you got raindrop emitter from?

Thanks. :)


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 11, 2005 at 9:16:46 pm

Sure -

I used the emitter called "Drips 1" from the "Color From Layer" library that comes with pIllusion 3.0. I modified it to not get the color from the layer (in the emitter properties, under the particle Tab's section called "Color."

Then I just made it so all of the particles were white (Got rid of any extra colors) and lowered the Number of Particles being emitted.

Hope that helps.

Aharon

Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Todd Groves
Re: PI3 with 3D
on Apr 11, 2005 at 9:22:55 pm

So, you mean you changed the settings under Color to what the defaults would be with a regular emitter?


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 11, 2005 at 9:43:13 pm

You got me. I know it exists that way somewhere, but i couldn't find it when I did the tutorial. I couldn't remember what it was called, so I just a modified the Color from layer one.

Less than a minute of work to change, btw.

But yeah, if you have the old one, it's the same thing.





Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Todd Groves
Re: PI3 with 3D
on Apr 11, 2005 at 9:54:15 pm

OK. I'll try to tweak it. I'll let you know if I can't get it to work like yours. Thanks for your help.


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 11, 2005 at 9:58:32 pm

Sorry if I wasn't clear there.

3 things need to be changed-

1) Turn off get color from layer, and choose to get the color from the gradient.

2) Make the gradient entirely white.

3) Lower the number of particles, using the number property.

Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Todd Groves
Re: PI3 with 3D
on Apr 11, 2005 at 10:12:38 pm

Perfect. Thanks so much, Aharon.


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Jose Burgos
Re: PI3 with 3D
on Apr 12, 2005 at 3:30:50 pm

Question:
The rain on the floor is rendered in 3D using bump mapping and the text is placed using AE in AE's 3D view using the camera data from Maya and then the rings rendered seperatly are used as a displacment on the text layer in AE?

Thank you,
Jose Burgos


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 12, 2005 at 3:51:02 pm

Render 1 - The 3D environment (Rain, ground).

The ground is actually 2 layers.

Plane 1 (top) - Phong shader - high specualrity, fully transparent. Bump Map is the black and white movie of the rain rings (the particles).

Plane 2 (right below Plane 1) - Lambert (I think). Ground with rock texture.

Render 2 - The Displacement map

In Maya, I Deleted everything except Plane 1, the lights, and the animated camera. I set the lights to 0 intesity (don't delete them - make their intensity 0 - otherwise, maya uses it's own fake lighting system which effects the layer making some parts too bright). Replaced the Phong shader with a lambert shader, with everything set to black, except the Incandescence channel (in 3DS max this would be called "Self Illumination").

In the Incandescence channel I put the same black and white rings movie that I used on the bump map. You can't see it in the Orthographic view, but if you do a render you will see the rings, and that they are not effected by the fact that there is no light in the scene.

I then rendered out a movie of the same length as the 3D environment render.

In After Effects

Imported the Maya camera data into AE

Imported both renders into AE. Dropped them both in the comp - kept them as 2D layers (remember, the 3D has already been rendered - they are only flat images now).

Made the B&W rings invisible - turned off their eyeball.

placed/rotated the text in 3D so that they appeared flat on the floor. BTW - You can set up null objects in Maya to mark where you want your text layer (or any other AE 3D layer) to be.

Added the displacement map effect to the text, and used the invisible B&W render as the source of displacement. Played with the settings until I got something I liked.

Hoep that helps.




Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Todd Groves
Re: PI3 with 3D
on Apr 12, 2005 at 3:58:19 pm

Thanks for the step-by-step, Aharon. :)


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Jose Burgos
Re: PI3 with 3D
on Apr 12, 2005 at 6:37:36 pm

[Aharon Rabinowitz] "placed/rotated the text in 3D so that they appeared flat on the floor. BTW - You can set up null objects in Maya to mark where you want your text layer (or any other AE 3D layer) to be. "

This is the part I was hoping for more info on.
You import the Maya camera to the AE camera and then load the nulls from the Maya scene?

Sorry if this seems straight forward but I have not used AE since 4.0 and use DFX+ 4 now.
As you know, the present DFX is not a 3D compositor (will be in 5.0).
So was wondering how AE allows you to load the nulls position and how you use them to allign the text.

Thanks again,
Jose Burgos


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 12, 2005 at 6:54:47 pm

Jose, this is a bit too deep for posting in the forum. I teach a 2 hour class on this process.

I would strongly suggest you read the help files from AE on importing Maya projects into AE.

Also, Trish Meyer does a great job of explaining this in Creating motion graphics with After Effects volume 2.

This only works with After Effects 5.5 or greater and it must be the production bundle (Now called "Professional Version").
Things that are crucial:

1) Save as Maya Ascii (MA) not Maya Binray (MB)

2) Bake all Camera and Null (locator) Keyframes

3) Name All locators (used as nulls in AE) like this: name_NULL or name_null. All caps for "null" or all lowercase. Not both.

4) Do not use or copy an Orthographic Camera. Create a new camera. It won't work otherwise.

You might try asking about this in the Maya and AE forums. Maybe there's even a tutorial available here at the cow or elswhere online that covers this subject.

It's not that's it's difficult, but it requires a good knowledge of Maya and AE to make it work well. If you do everything right, when you choose to import the MA file into AE (Same as you import another file), AE will set everything up for you.

Once the comp is set up, drop your rendered 3D footage in there - remember keepo them as non-3D layers. The image is flat - it is a movie of a 3D scene - not actually 3D.

You will need to copy the position, scale, and any rotation for your null objects, and paste it into your 3d AE Layers - do not "replace" the nulls - this will just make your layer invisible.

Hope this gets you moving in the right direction.

Aharon




Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Jose Burgos
Re: PI3 with 3D
on Apr 12, 2005 at 9:59:01 pm

[Aharon Rabinowitz] "You will need to copy the position, scale, and any rotation for your null objects, and paste it into your 3d AE Layers - do not "replace" the nulls - this will just make your layer invisible.

Hope this gets you moving in the right direction. "


I see you copy and paste the 3D data into the AE 3D layer.
Yes this is what I was looking for.

Wanted to know how you did it in AE so that when the new version of DF comes out, I can compare.

Thank you,
Jose Burgos


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Aharon Rabinowitz
Re: PI3 with 3D
on Apr 12, 2005 at 10:12:39 pm

Just in case I wasn't clear...

When you bring the MA file into AE, The camera and Nulls are all set up witht their keyframes.

You need to select and copy the keyframes from the nulls in AE and paste them on other layers in AE. You don't copy the data from maya and paste into AE.

What is DF?

Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
http://www.pIllusionFusion.com


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Jose Burgos
Re: PI3 with 3D
on Apr 12, 2005 at 10:21:06 pm

[Aharon Rabinowitz] "You need to select and copy the keyframes from the nulls in AE and paste them on other layers in AE. You don't copy the data from maya and paste into AE.
What is DF?"


Yes you where clear.
Crystal :)

Digital Fusion.
Node based compositor with a virtual camera finally coming in version 5.
I think only AE is left as a non-node based compositor.
Since I switched from AE to DF, I have never looked back except when I wished it was possible to composite with a virtual camera.

Take care,
Jose Burgos


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