<div dir="ltr">Does this have a similar API / interface to the standard VR? </div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 25, 2016 at 9:45 AM, Nathan Goldbaum <span dir="ltr"><<a href="mailto:nathan12343@gmail.com" target="_blank">nathan12343@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Thu, Feb 25, 2016 at 11:40 AM, Matthew Turk <span dir="ltr"><<a href="mailto:matthewturk@gmail.com" target="_blank">matthewturk@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi folks,<br>
<br>
Over the last little while, Kacper, Andrew and I have been picking up<br>
on some work started by Chuck Rozhon to implement OpenGL-based volume<br>
rendering of AMR data. Kacper recorded a demo about a week ago,<br>
although it has improved considerably even since then:<br>
<br>
<a href="https://www.youtube.com/watch?v=yiiBDK1OJDo" rel="noreferrer" target="_blank">https://www.youtube.com/watch?v=yiiBDK1OJDo</a><br>
<br>
As of right now, it can do these things:<br>
<br>
* Load up a "data source" (which can be all_data, but doesn't need to be)<br>
* Utilize orthographic and perspective cameras<br>
* Maximum intensity projection<br>
* Integrated projection<br>
* Apply colormaps to these two things, using two-pass rendering<br>
* Trackball camera with keyboard shortcuts for moving around the domain<br>
* Output camera information that is compatible with the software<br>
renderer (i.e., it can be used to get a sequence of camera positions)<br>
* Save images out<br>
* Preliminary support for color transfer function-based VR. At<br>
present this only supports isosurfaces that are manually encoded. It<br>
will soon take 1D textures from the CTF object.<br>
<br>
The system has been designed to be very modular, with extensible<br>
keyboard and mouse shortcuts. Kacper has even been able to build a<br>
very lightweight Qt-based GUI around it (on BB as xarthisius/reason )<br>
without changing much/any of the internal-to-yt code. Also, it works<br>
reasonably well even on fairly old graphics cards for reasonably sized<br>
data. (And since it'll accept data objects that are cutouts, this<br>
means you could pull a sphere or block out of a gigantic dataset and<br>
use that.)<br>
<br>
Anyway, the reason I'm writing is that I'd like to bring it to<br>
people's attention sooner rather than later. It'll need some testing,<br>
and we're also working to make it in a readily usable state as well.<br>
As of right now, before WIP gets removed from the pull request, we're<br>
going to add documentation (with notes that it is likely an unstable<br>
API) and hopefully a short screencast. But before then, I would like<br>
to invite folks to either review the PR or to test it out.<br>
<br>
<a href="https://bitbucket.org/yt_analysis/yt/pull-requests/1598" rel="noreferrer" target="_blank">https://bitbucket.org/yt_analysis/yt/pull-requests/1598</a><br>
<br>
Note that this requires cyglfw3, which is accessible via pip.<br></blockquote><div><br></div></div></div><div>Also needs glfw3, which I installed via homebrew.</div><span class=""><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I'm pretty excited about this, and the design we have been aiming for<br>
with the way it accepts objects and shaders should enable a lot of<br>
cool things to be done -- especially with respect to selecting data,<br>
presenting it, etc etc.<br>
<br>
I'd really like to see this be a part of 3.3.<br>
<br>
-Matt<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div>Cameron Hummels<div><span style="font-size:12.8000001907349px">NSF Postdoctoral Fellow</span></div><div><span style="font-size:12.8000001907349px">Department of Astronomy</span></div><div><span style="font-size:12.8000001907349px">California Institute of Technology</span><br></div><div><a href="http://chummels.org" style="font-size:12.8000001907349px" target="_blank">http://chummels.org</a><br></div></div></div></div>
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