[yt-users] Making volume rendering interactive

[John Holdener]

Hello Irwin!

Right now, me and my associates at UCSC are working on a piece of software
that does just this (Interactive remote volume rendering using GPUs).  It
works right now, but is in the alpha/beta stage.  However, it is designed to
interop nicely with Yt.  If you'd like to try it out, email me off list and
I can help you out.


John Holdener
Research Assistant
UC HiPACC
(408) 828-8699



-----Original Message-----
From: yt-users-bounces at lists.spacepope.org
[mailto:yt-users-bounces at lists.spacepope.org] On Behalf Of Irwin Zaid
Sent: Sunday, April 20, 2014 4:05 PM
To: yt-users at lists.spacepope.org
Subject: [yt-users] Making volume rendering interactive

Hi everyone,

I'm a new user to yt (which looks amazing, by the way), and have a question
about volume rendering...

What I'd like to do is have interactive volume rendering, like what is in
VTK. In VTK, you can use the mouse to pan, zoom, and dolly. From what I can
see, this isn't directly possible with yt currently. Is that correct?

Assuming that is correct, I'd be happy to write my own interactive navigator
using matplotlib. However, I'd need to be able to map a (i, j) pixel from
the 2D image output from camera.snapshot to an (x, y, z) position in the
volume. Is there a way to do this without too much effort? I see there is a
method called 'project_to_plane' in camera, which seems like it might do the
inverse of that...

Relatedly, I was told on IRC that there is a new camera interface in the
works (http://ytep.readthedocs.org/en/latest/YTEPs/YTEP-0010.html). Is there
a branch for this somewhere? Does it need contributors? It is going to be
interactive in the above sense?

Thanks for your help!

Irwin
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