[yt-users] Volume Renderings

gso at physics.ucsd.edu gso at physics.ucsd.edu
Fri Feb 5 18:25:00 PST 2010


Nice looking movies, are we looking at star forming or blowing up?:-)
Been using VisIt to do rendering, need to learn a new toy to play with now
heh

From
G.S.

> Hi Matt,
>
> Great news.  I can cook up a multi-variable transfer function over the
> weekend and send it over.  Anyways I'm trapped in with the 2 feet of snow
> falling tonight and tomorrow!
>
> John
>
> On 5 Feb 2010, at 20:02, Matthew Turk wrote:
>
>> 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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