[yt-users] Volume Renderings

[Matthew Turk]

Hi John,

Thanks for your kind words -- and as for the rho & T, it's
*definitely* possible.  I'd put work on the backend on hold for a
while, but this has always been in my head -- I think it's very
important to have multi-variate transfer functions.  Actually, if you
have a multiple variable transfer function in mind you could hand off
to me, I'd be eager to give a go at extending the machinery to support
multiple variables!

As a side note, those movies are absolutely gorgeous.  I'm honored to
even hear you broach the subject.

-Matt

On Fri, Feb 5, 2010 at 4:58 PM, John Wise <jwise at astro.princeton.edu> wrote:
> Wow, awesome work, both of you!  I enjoyed your other renderings on your
> website, too.  And thanks for sharing your parallel script!
> I looked through the ray tracing code, and saw that it could only supports
> one field.  Would it be easy to support separate fields for opacity and
> color?  i.e. density for opacity and temperature for color.  Then we can
> re-create those "photo-realistic" renderings ...
> http://www.astro.princeton.edu/~jwise/movies/FirstStarLighting_CLASSIC_HD_MONO720.mov
> http://www.astro.princeton.edu/~jwise/movies/FirstStarLighting_RedBlue_MONO_HD720.mov
> with yt!
> Cheers,
> John
> On 5 Feb 2010, at 19:27, Sam Skillman wrote:
>
> Hi all,
> Matt asked me to share some recent volume renderings that I've made, along
> with the scripts to go with them.  I've posted one such example here:
> http://casa.colorado.edu/~skillman/research_and_codes/files/0c4c670cea1660aecbf0d0abdf3f3120-3.html
> Beware the movie is about 260 MB.
> This is a fairly small simulation but is a good example of what the volume
> renderer can do.  I've implemented an "embarrassingly" parallel script that
> allocates one datadump/viewpoint to each processor.  Here each of the 1717
> frames can be partitioned and rendered in about a minute for a 1024^2 image,
> meaning that on 16 processors this took about 2 hours.  If you have
> questions about how the script works, please let me know.
>
> Cheers,
> Sam
> --
> Samuel W. Skillman
> DOE Computational Science Graduate Fellow
> Center for Astrophysics and Space Astronomy
> University of Colorado at Boulder
> samuel.skillman[at]colorado.edu
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