[Luis Morales]

Exactly dynamics/physics is what I’m trying to achieve… I figure Dan’s code for collision detection would be part of the code, at least now we know how to detect when two layers intersect. Now, I figure that in position one would have to somehow define gravity, but then there’s also how to handle rotation once a collision has been detected, and then there’s friction that has to be defined and calculated… I hope this makes any sense to someone…

[Luis Morales]

Thank you very much Mike, it works like a charm…
I had to set-up a little bit further since my videowall was actually a pre-comp in 3D space, so I reimported my video layers shut video off, and positioned them where they are actually sitting in the 3D comp, then applied your expression (with new values) and it works! It’s exactly what i needed. This is saving LOTS of time, so THANKS a LOT!!!
Hope I can help you out some other time.
Take care,
L

[Luis Morales]

No, I didn’t account the space between the screens, but i don’t think it would feel natural anyway: somehow the brains just ignores these areas… Since there’s no motion=no movement.
As for final screen size: if your delivery medium is DVD, you could simply create a new comp for each screen with whatever DVD settings you want to use, and stretch the comps you’ve created to crop the large one.

Glad to be helpful,

L

[Luis Morales]

Hello.

Actually I did the exact same thing back in May this year, and it took me four days to realize that in order to get maximum image quality, I needed to create my comp with a custom pixel aspect ratio. This is the biggest technical difficulty when creating content for rotated plasmas, since pixels in a plasma have an aspect ratio of 1,33:1, but when you rotate the screen, the ratio gets inversed and becomes 1:1,33 or .75 aspect pixel ratio. In order to do this, you need to modify a file called “interpretation rules.txt” that can be found in your AE directory. At the bottom you will see a line that is commented out that reads:

0, 0, 0, “0000”, * = 1/1/”Custom Pixel Aspect Ratio”, *, *, *, *, *

Or something like this.
You need to enable this line, simply removing the # symbol at the beggining and then you leave everything as is except that the first 1 must be changed to 1,33 and where it says Custom Pixel Aspect Ratio you name your aspect ratio as you want.
Notice that you will need to compensate your comps X value, as it being downscaled 75%, so your 1920 px will turn into 2400 px, So your comp size should be 2400×852 px with a custom pixel aspect ratio of 0.75. You can work on this comp normally and do whatever you want, and then you should create an 852×600 px comp (one for each screen) with an 1,33 pixel aspect ratio, and effectively bring your original comp and change its position to crop the area that is required for each screen. (Be sure to rotate and scale your original comp)

You can the create a proxy of your original comp, so you don’t render 4 times the same thing… Then you’re ready to export video for each screen.

Hope this helps…

L