Hasta La Motion!

I am working on a shot on my reel. Decided to try using Mocha to do some tracking since I have access to it through fxphd, and I could stand to learn it better. Got a bad track. (Surely my fault, since I haven’t actually done the mocha course yet.) But, it was kind of close, so I decided to use it along with another corner pin node. The corner pin node from Mocha gave me rough movement, then I just had to fine tune everything with my additional corner pin node. It seemed to work well enough.

But, now I want to do an expression based on the actual position of the corner points in the frame. And I have no idea how to do it.

I assume I’m not explaining this well enough, so I am attaching a Nuke script that shown what I want, and uses my actual two corner pin nodes. I’m hoping to avoid having to completely redo the track to make this work. I’m lazy. 🙂

CornerPin2D #1 to1.x = 924
CornerPin2D #2 to1.x = 484
Resulting Point = 644

I’m imagining that there’s a simple relation between these numbers that doesn’t require me doing a ton of matrix math, but I’m just not seeing it.

rather than doing it manually,as I have quite a few meshes in my scene.
Cheers

This sounds as eventful as the invention of the Internet.
However, I have yet been able to recreate this in nuke. I have watched the foundrys 2.5 relighting.
5 minutes into that video and I was as lost as a flea in space.

From what I understand, (and that’s not much) is that you render out a position pass in a 3d app and somehow when you move nukes light around, the "Image" relights?

I found a vray tutorial about a point cloud node & sampler infotex which created a point cloud of your image?

So confused, so:
1. Do you need to make your image into a point cloud (2.5 D ) to relight it?
2. If not, does anyone know of a good (EASY) tutorial that walks you thru to relight your model?

Thanks,
Lou

I tested relighting in Nuke with pointPass