Mailman 3 Real-time histogram presentation based on interactive volume rendered camera properties - yt-users

11 Apr 2017

If you'd be interested in experimenting with the OpenGL volume
rendering, take a look at these doc pages:

http://yt-project.org/docs/dev/visualizing/interactive_data_visualization.html
<http://yt-project.org/docs/dev/visualizing/interactive_data_visualization.html>
http://yt-project.org/docs/dev/cookbook/complex_plots.html#cookbook-opengl-vr
<http://yt-project.org/docs/dev/cookbook/complex_plots.html#cookbook-opengl-vr>

In addition, the place in the codebase to look to see how this is
implemented is e.g. here:

https://bitbucket.org/yt_analysis/yt/src/416bc87fd064d8cd5d64a98922c00c1cc71a0f7d/yt/visualization/volume_rendering/interactive_vr.py
<https://bitbucket.org/yt_analysis/yt/src/416bc87fd064d8cd5d64a98922c00c1cc71a0f7d/yt/visualization/volume_rendering/interactive_vr.py>

It makes use of cyglfw, a cython wrapper for the GLFW OpenGL
library. If you're familiar with OpenGL that will help.

-Nathan

On Tue, Apr 18, 2017 at 3:20 PM, E.M. Dragowsky <dragowsky@case.edu
<mailto:dragowsky@case.edu>> wrote:

    Hi, Matt -- Thanks for offering this assessment of the current
    state, including the notion that my interest aligns with future
    plans. 

    To aid in my report back to my sponsors, perhaps I can extend
    this conversation to determine if there's anything I can
    contribute to this development effort? I've described myself as
    a "researcher who can code", definitely not to be confused with
    a practiced developer, and yet...these topics of volume
    rendering and coordinated views have become really interesting
    to me.

    Please let me know,
    ~ Em

    ---------- Forwarded message ----------
    From: *Matthew Turk* <matthewturk@gmail.com
    <mailto:matthewturk@gmail.com>>
    Date: Tue, Apr 18, 2017 at 2:47 PM
    Subject: Re: [yt-users] Real-time histogram presentation based
    on interactive volume rendered camera properties
    To: Discussion of the yt analysis package
    <yt-users@lists.spacepope.org <mailto:yt-users@lists.spacepope.org>>

    Hi Em,

    Thanks for writing.  Right now, this isn't possible; I had
    delayed on writing back because I was experimenting with ways of
    augmenting the existing OpenGL VR to do this, but I ended up not
    coming up with anything in time.  I absolutely think this is
    where we would like to go with our interactive VR, but I don't
    have a timetable for it right now.

    -Matt

    On Tue, Apr 11, 2017 at 9:54 AM, E.M. Dragowsky
    <dragowsky@case.edu <mailto:dragowsky@case.edu>> wrote:

        Greetings --

        Please forgive the subject line -- it makes sense to me;
        hopefully after reading the note it will make sense to me+1
        or more....

        Just last week I became aware of yt, and so this is a
        question about capabilities:

        I'm working on a project to aid a researcher with
        visualizing derived data products (a set of ~5000
        histograms) along with volume rendering of simulations
        performed with Flash (flash.uchicago.edu
        <http://flash.uchicago.edu/>). This would involve
        manipulation of the rendered volume data (e.g. temp, density
        data fields) and coordinated presentation in an inset or
        separate window from the set of histograms. The active
        camera view angles from the rendered volume display would be
        used to select from the histogram set (in this case indexed
        by 51 polar angle bins and 101 azimuthal angle bins). The
        key is for the histogram selection to take place as the
        rendered display is being updated through user interaction
        -- so as the view is rotated, the histogram updates without
        having to stop the user actions.

        Right now, these histograms are created at the end of the
        simulation. One could imagine a more general case in which
        the histogram were derived from the volumetric data in real
        time. 

        Is this a task suited to the current state of yt development?

        Best regards,
        ~ Em

        -- 
        ----------------------------------
        E.M. Dragowsky, Ph.D.
        Research Computing -- UTech
        Case Western Reserve University
        (216) 368-0082 <tel:(216)%20368-0082>

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    -- 
    ----------------------------------
    E.M. Dragowsky, Ph.D.
    Research Computing -- UTech
    Case Western Reserve University
    (216) 368-0082 <tel:(216)%20368-0082>

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