3D Alpha "Mirror" Center-Out Fly Out Issue

Soniclight wrote on 11/6/2006, 8:43 AM

A Question for Those Experienced in 3D Alhpa/Track Motion with Vegas 6
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Hi,

I have Vegas 6 and it's been rvery tricky to get just one side to do this in the desired perspective on a 3D Aplha track. Now I need to do it for the other side -- that is, create a second track that would essentially horizontal-flip the flyout towards the viewer.:

<<<<< ----------- IMAGE left ------- CENTER ------ IMAGE right ----------- >>>>>

I have taken the time to create a detailed temporary page at my website witth a short .wmv clip of what I mean (of the one side that I have managed to do) -- as well as screenshots of the two (start and end) keyframes and of all their values.

If necessary, I could create a .veg file and post it there if that would be easier to for you to help me to figure this out (I'd have to created a separate project for that). Let me know what would be easiest.

One part of why it is tricky to duplicate this in a mirror fashion is because to simulate the right perspective at the start (or at-horizon-line position), one has to create a "fake center" -- which is not at the absolute x/y/z center.

You'll see what I mean if you look at the upper two 3D Alpha views. In fact, it's way off center -- but works as a sequence. It just makes it pretty hard to "mirror."

Thanks for you help.

~ Soniclight/a.k.a. Philip

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--- Temporary Video Study Media page (this page will not be online indefinitely, only as long as the question is active here at this forum):

http://www.compassionsensuality.net/Media/Video_Study_Media.html

Comments

Soniclight wrote on 11/6/2006, 9:04 AM

P.S.: Once we've figured this essential part out, I'd also like to improve the motion:

I've spent hours on this, but try as I may, the fly-out still slows down the closer to the viewer it gets. Which is not how it works in real life -- the closer it gets, the faster it should go. Even using a velocity curve doesn't help much at all.

But one issue at a time.

~ Soniclight/a.k.a. Philip

grh wrote on 11/6/2006, 9:30 AM

You need to set the smoothness values on the keyframes. The end keyframe should have a smoothness of 0, and a type of "fast".

Former user wrote on 11/6/2006, 9:38 AM

Is this the sort of thing you're looking for?

flyby sample wmv file

flyby sample veg file

Jim

TheHappyFriar wrote on 11/6/2006, 10:08 AM

i know how to do this, just not explain very well. could you post a veg?
infact, i have a vid & a veg i'll post for ya, but my ftp is currently down. :(. But here's a summary:

only the X rotations & positions need to be opposites. So if the right image is X = -200 & Xrot = -70, then the left image needs to be X = 200 & Xrot = 70.

The X/Y/X axix bars that are not connected to the object are the screen center. The other axis are the object center.

Soniclight wrote on 11/6/2006, 11:58 AM

Thanks for replies. I've got time-sensitive stuff to do right now but will be back later tonight most likely.

TheHappyFriar wrote on 11/6/2006, 6:25 PM

here ya go:
http://www.sterlingshield.net/home/steve/vegassite/video/flyout.wmv
http://www.sterlingshield.net/home/steve/vegassite/video/flyout.veg

Soniclight wrote on 11/7/2006, 1:05 AM

Thanks, TheHappyFriar :) This simplifies things. That said, I'll have to tweak it a bit to make start point isizes smaller in size and images fly off screen -- I hope I don't screw those up - lol.

JohnnyRoy wrote on 11/7/2006, 4:38 AM

Don't forget that you are just giving the "illusion" of 3D in a 2D space. If you can't get the images far enough back in Z space, you can scale them smaller! The eye will never know the difference. Quite often I use a combination of Z and scale to make things look like they are moving much further in space than they really are.

I have two tutorials on my web site that might help. One is on Vegas Track Motion: Changing the 3D Pivot Point and the other is 3D Parent Motion: Moving Planes. These might help you with some of the concepts.

~jr

TheHappyFriar wrote on 11/7/2006, 5:33 AM

i was thinkink to jsut have htem fade in, but yeah, that works too (forgot about scale). :)

Soniclight wrote on 11/7/2006, 7:53 AM

Gittin' the hang of it. I'll show ya whud I pulled off within the next 24 hours or so.

JohhnyRoy: Thanks for the "Pivot" tutorial. Now THAT's going to come in handy for not all of my flyyouts will be from center-horizonline.

TheHappyFriar: Thanks again for the .veg file

I'll also post follow up Q related to mass producing (repeating) these puppies since I'll be having probably 100 or so images do this and other types of flybys scattered through the project. I'll look in the Help files, but I'm bound to run into something on which I'll need some extra feedback/tip-tricks.

Trying to cut down on tedious manual labor... lol.

Hasta la then.