Mailing List AE-List@media-motion.tv ? Message #58222
From: Byron Nash <AE-List@media-motion.tv>
Subject: Re: [AE] 3 points to establish a plane
Date: Thu, 23 Jul 2015 20:04:21 -0400
To: After Effects Mail List <AE-List@media-motion.tv>
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Perfect! I was trying to look up the equations but couldn't get it right. Thanks!

On Thu, Jul 23, 2015 at 7:30 PM, Walter Soyka <AE-List@media-motion.tv> wrote:

I keep meaning to add this to my 3d-layer-tools script, but I posted the expressions to do this here:

https://forums.creativecow.net/thread/2/1053700

You may need to translate to world space or vectors depending on what parenting you have going on, but that should get you started.

w.

On Jul 23, 2015 6:27 PM, "Byron Nash" <AE-List@media-motion.tv> wrote:
What's the math to determine a plane based on three nulls in 3D space? I'd like to replicate the functionality of the built in tracker and be able to select three nulls and get a layer that sits on that plane in space. I figure it can be done with expressions and the pointAt() function but I'm not sure how to get the 3rd dimension.

Thanks
Byron

 
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