[yt-users] yt-users Digest, Vol 111, Issue 44
Alexander Hamilton
A.Hamilton at 2016.hull.ac.uk
Wed May 24 03:50:56 PDT 2017
Hi Matt,
Cheers for the info, I’ll take a look at your Unity code, I’m betting it’ll be better than my stab at it a few months back, I used someone else’s ray-marching code:
https://github.com/brianasu/unity-ray-marching/tree/volumetric-textures
Is it a mercurial repository? (I’ve just never used that before)
Hi Nathan,
My skillset doesn’t cover Open GL or general graphics either (yet, maybe in time), but I’m more than happy to help where I can and I have enough people here interested to get their data in VR that there’s a good amount of support. :)
I assume yt’s OpenGL volume rendering uses ray-marching?
Hi Suoqing,
Cheers, that’s cool, I’ll have to give that a try too, I’ll have to see if the data will look good on that.
Hi Jill,
That’s a good idea, I’d never heard of sketchfab, most of our datasets are more volume then surface, but it’s worth a try for some of my solar stuff.
Thanks guys, I’m getting loads of cool ideas from here.
Regards
Alex
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Today's Topics:
1. Re: YT VR Visualisation (Naiman, Jill)
2. Re: YT VR Visualisation (Suoqing Ji)
3. Ramses MHD visualization (Daniel William Murray)
----------------------------------------------------------------------
Message: 1
Date: Tue, 23 May 2017 10:00:31 +1000
From: "Naiman, Jill" <jill.naiman at cfa.harvard.edu>
To: Discussion of the yt analysis package
<yt-users at lists.spacepope.org>
Subject: Re: [yt-users] YT VR Visualisation
Message-ID:
<CAFwWoV-K5rWnL_9LZVQ4ZVhvaH8znbMo0Vi1yrg0MeApeSxuXw at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Hi All,
Just FYI - one can also generate points/surfaces with yt and upload them
somewhere like Sketchfab and use their VR mechanisms.
Looking forward to what comes of it!
Cheers,
-Jill
On Tue, May 23, 2017 at 2:14 AM, Nathan Goldbaum <nathan12343 at gmail.com>
wrote:
>
>
> On Mon, May 22, 2017 at 11:07 AM, Matthew Turk <matthewturk at gmail.com>
> wrote:
>
>> Hi Alex,
>>
>> Yup, we have been, and with the vive and oculus specifically. Right
>> now though, it never got past much of a tech demo phase -- there's
>> code on my group's bitbucket account (bitbucket.org/data-exp-lab/ )
>> that runs in Unity, and Nathan Goldbaum got some of the stuff that's
>> in yt (the volume rendering) to work with the OpenVR python bindings
>> directly (not srue where that code is) but it's all still pretty early
>> on.
>
>
> This code isn't really usable yet. In order for this to actually work,
> we'll need a big overhaul of the OpenGL volume rendering in yt to use
> multiple passes.
>
> In addition there were significant performance issues that I never tracked
> down. Unfortunately I'm no expert on graphics programming and that's
> probably what's needed here.
>
>
>> Not sure it's quite shovel ready. There're some students coming
>> on soon that will take another look, but July might be a bit
>> optimistic... That being said, it'd be an awesome hack or
>> collaboration and if you are interested in trying to push it at all,
>> that'd be pretty rad.
>>
>> -Matt
>>
>> On Mon, May 22, 2017 at 10:10 AM, Alexander Hamilton
>> <A.Hamilton at 2016.hull.ac.uk> wrote:
>> > Hi guys, I?m Alex from Hull University.
>> > We?re hosting the UK?s National Astronomy Meeting in July and I?ve been
>> > asked to run the hack day.
>> >
>> > I?ve managed to procure some VR headsets (HTC Vive, Oculus Rift and MS
>> > Hololens) and want to try and see if we could use them for visualising
>> some
>> > of our simulation data.
>> > I hear you guys may have been playing with VR, is that true? Is there
>> > anything that we could use/play-with at this point?
>> >
>> >
>> >
>> > Thanks
>> >
>> > Alex
>> >
>> > **************************************************
>> > To view the terms under which this email is
>> > distributed, please go to
>> > http://www2.hull.ac.uk/legal/disclaimer.aspx
>> > **************************************************
>> > _______________________________________________
>> > yt-users mailing list
>> > yt-users at lists.spacepope.org
>> > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>> >
>> _______________________________________________
>> yt-users mailing list
>> yt-users at lists.spacepope.org
>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>
>
>
> _______________________________________________
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Message: 2
Date: Mon, 22 May 2017 17:18:20 -0700
From: Suoqing Ji <suoqing at physics.ucsb.edu>
To: Discussion of the yt analysis package
<yt-users at lists.spacepope.org>
Subject: Re: [yt-users] YT VR Visualisation
Message-ID: <ca3136c6-5fe9-4aac-92df-09d17d82bffc at Spark>
Content-Type: text/plain; charset="utf-8"
Hi Alex,
Just to add up one more point: yt is always able to generate pre-rendered virtual reality movies with stereo-spherical lens, which works perfectly with Google Cardboard.
To generate the movie, you could refer to this page: http://yt-project.org/docs/dev/visualizing/volume_rendering.html#spherical-and-stereo-spherical
An example move is at:?https://www.youtube.com/watch?v=ZYWY53X7UQE . You could also put your smartphone into Google Cardboard to watch the video with Youtube App.
Best wishes,
?
Suoqing Ji
Ph.D Candidate
Department of Physics
University of California, Santa Barbara
http://physics.ucsb.edu/~suoqing
On May 22, 2017, 5:00 PM -0700, Naiman, Jill <jill.naiman at cfa.harvard.edu>, wrote:
> Hi All,
>
> Just FYI - one can also generate points/surfaces with yt and upload them somewhere like Sketchfab and use their VR mechanisms.
>
> Looking forward to what comes of it!
>
> Cheers,
> -Jill
>
> > On Tue, May 23, 2017 at 2:14 AM, Nathan Goldbaum <nathan12343 at gmail.com> wrote:
> > >
> > >
> > > > On Mon, May 22, 2017 at 11:07 AM, Matthew Turk <matthewturk at gmail.com> wrote:
> > > > > Hi Alex,
> > > > >
> > > > > Yup, we have been, and with the vive and oculus specifically.? Right
> > > > > now though, it never got past much of a tech demo phase -- there's
> > > > > code on my group's bitbucket account (bitbucket.org/data-exp-lab/ )
> > > > > that runs in Unity, and Nathan Goldbaum got some of the stuff that's
> > > > > in yt (the volume rendering) to work with the OpenVR python bindings
> > > > > directly (not srue where that code is) but it's all still pretty early
> > > > > on.
> > > >
> > > > This code isn't really usable yet. In order for this to actually work, we'll need a big overhaul of the OpenGL volume rendering in yt to use multiple passes.
> > > >
> > > > In addition there were significant performance issues that I never tracked down. Unfortunately I'm no expert on graphics programming and that's probably what's needed here.
> > > >
> > > > > Not sure it's quite shovel ready.? There're some students coming
> > > > > on soon that will take another look, but July might be a bit
> > > > > optimistic...? That being said, it'd be an awesome hack or
> > > > > collaboration and if you are interested in trying to push it at all,
> > > > > that'd be pretty rad.
> > > > >
> > > > > -Matt
> > > > >
> > > > > On Mon, May 22, 2017 at 10:10 AM, Alexander Hamilton
> > > > > <A.Hamilton at 2016.hull.ac.uk> wrote:
> > > > > > Hi guys, I?m Alex from Hull University.
> > > > > > We?re hosting the UK?s National Astronomy Meeting in July and I?ve been
> > > > > > asked to run the hack day.
> > > > > >
> > > > > > I?ve managed to procure some VR headsets (HTC Vive, Oculus Rift and MS
> > > > > > Hololens) and want to try and see if we could use them for visualising some
> > > > > > of our simulation data.
> > > > > > I hear you guys may have been playing with VR, is that true? Is there
> > > > > > anything that we could use/play-with at this point?
> > > > > >
> > > > > >
> > > > > >
> > > > > > Thanks
> > > > > >
> > > > > >? ? ?Alex
> > > > > >
> > > > > > **************************************************
> > > > > > To view the terms under which this email is
> > > > > > distributed, please go to
> > > > > > http://www2.hull.ac.uk/legal/disclaimer.aspx
> > > > > > **************************************************
> > > > > > _______________________________________________
> > > > > > yt-users mailing list
> > > > > > yt-users at lists.spacepope.org
> > > > > > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
> > > > > >
> > > > > _______________________________________________
> > > > > yt-users mailing list
> > > > > yt-users at lists.spacepope.org
> > > > > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
> > >
> > >
> > > _______________________________________________
> > > yt-users mailing list
> > > yt-users at lists.spacepope.org
> > > http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
> > >
>
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Message: 3
Date: Tue, 23 May 2017 17:59:15 +0000
From: Daniel William Murray <dwmurray at uwm.edu>
To: "yt-users at lists.spacepope.org" <yt-users at lists.spacepope.org>
Subject: [yt-users] Ramses MHD visualization
Message-ID:
<MWHPR04MB1185DDA612C4C5D38349B6DDDCF90 at MWHPR04MB1185.namprd04.prod.outlook.com>
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Dear yt folks,
I am trying to visualize some RAMSES MHD simulation data. The simulation is for gravitationally collapsing gas looking at star formation. I'm looking to obtain projection and slice plots and then annotate the magnetic fields onto the resulting image.
I'm on Mac OS X 10.9.5
I'm using conda 4.3.18
My version of yt is: 3.3.5-py27_0
and python 2.7.12
All of what I believe is the relevant code:
pf = yt.load('output_00284/info_00284.txt')
sp = pf.h.sphere(part_center, (zoom_width + 0.5, "pc"))
L = sp.quantities.angular_momentum_vector()
p = yt.OffAxisSlicePlot(pf, L, 'density', center=part_center, width =(zoom_width, "pc"))
p.annotate_magnetic_field()
p.save('test.png')
The error:
yt.utilities.exceptions.YTPlotCallbackError: annotate_magnetic_field callback failed with the following error: Could not find field '('all', 'magnetic_field_x')' in info_00284.
If I load the field list for the data set, I can see that the B field data is there, but under 'ramses', not 'all'
('ramses', 'x-Bfield-left'),
('ramses', 'x-Bfield-right'),
('ramses', 'x-velocity'),
('ramses', 'y-Bfield-left'),
('ramses', 'y-Bfield-right'),
('ramses', 'y-velocity'),
('ramses', 'z-Bfield-left'),
('ramses', 'z-Bfield-right'),
Is there a way to pass these fields to annotate_magnetic_field? Or a manner in which I can have this information load in the field ('all', 'magnetic_field_')
I should also note that I can create and save the plots with no issues, so long as I do not try to annotate the magnetic fields.
Cheers,
Daniel Murray
Graduate student at University of Wisconsin Milwaukee
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