Poisson Surface

[rcallicotte]

The Foundry is releasing Poisson Mesh in Nuke, sort of gradually.  Learning what I can, I'm not sure how this might be useful for surfaces created in Terragen and then moved into Nuke.  Is there something someone in Planetside can tell us so we could understand Poisson Surface better and maybe get a better leave to meshing meshes.   

[Matt]

As I understand it, the Poisson Mesh node converts a point cloud (a set of disconnected points in space) into a surface for rendering. How might this relate to Terragen? Well, in Terragen 2.5 you will be able to save a "surface position" element that records the 3D position of every pixel in the image (commonly called a "P Pass"). They are useful in all sorts of ways for compositing, as you can extract masks based on position in 3D space, add lighting to the image... all kinds of things. Nuke can turn this into a point cloud and, with Poisson Mesh convert to a polygonal surface. I haven't tried to generate point clouds or meshes from Terragen data though.

Matt

[rcallicotte]

Uhmmm, well...do you think it's possible we can do this?  Is there a way I could do it now or maybe...oh, wait.  TG2.5?  What?   

As I understand it, the Poisson Mesh node converts a point cloud (a set of disconnected points in space) into a surface for rendering. How might this relate to Terragen? Well, in Terragen 2.5 you will be able to save a "surface position" element that records the 3D position of every pixel in the image (commonly called a "P Pass"). They are useful in all sorts of ways for compositing, as you can extract masks based on position in 3D space, add lighting to the image... all kinds of things. Nuke can turn this into a point cloud and, with Poisson Mesh convert to a polygonal surface. I haven't tried to generate point clouds or meshes from Terragen data though.

Matt

[Kadri]

I remember this video from 3 years ago .

http://www.youtube.com/watch?v=YdUWRhxYapY&feature=plcp
(look at the other part too guys )

It was interesting how they used a comp program for 3D.
After 3 minutes or so there comes the P Pass part (the video is interesting as a whole ).
I am not sure how i could use it but it is part of the render passes i think so 2.5 will look very nice to many compers it seems

[rcallicotte]

I'm looking forward to 2.5, but without discontent.    

Well, no.  I'm actually so excited, I have to calm down.   

[goldfarb]

why go through these steps to do something that you can do right now?
if you want a mesh in Nuke, use the exporter and bring it in...
and if, in Terragen 2.5, a P pass is supported, then you can have that also...
personally I don't see the point, except in very specific cases...which in my experience are rare.