[yt-dev] A change to the new volume rendering API

[Andrew Myers]

+1.

On Thu, Mar 3, 2016 at 12:36 PM, Michael Zingale <
michael.zingale at stonybrook.edu> wrote:

> I think this is a good idea.
>
> On Thu, Mar 3, 2016 at 3:07 PM, Matthew Turk <matthewturk at gmail.com>
> wrote:
>
>> Hi Nathan,
>>
>> Seems like the best way forward.  I think we're far past being able to
>> do things like "mandate a unitary coordinate system for the scene" and
>> so I think this is a good way forward.  The only time it would really
>> break is multi-DS scenes, which I think right now aren't allowed.
>> Although, that would be nice.  :)
>>
>> +1
>>
>> -Matt
>>
>> On Thu, Mar 3, 2016 at 2:04 PM, Nathan Goldbaum <nathan12343 at gmail.com>
>> wrote:
>> > Hi all,
>> >
>> > Right now I'm trying to resolve the issues the new VR interface has
>> when you
>> > try to specify a volume rendering scene using data that has units
>> attached.
>> >
>> > Right now, the scene and camera object don't have any knowledge about
>> the
>> > units of the data being rendered. At the same time, there are places
>> where
>> > the camera, lens and scene assume things like the "width" and "position"
>> > *do* have units, which can break in annoying ways.
>> >
>> > Unfortunately, the way the VR infrastructure is set up right now, it's
>> very
>> > difficult for the scene, RenderSource, camera, and lens to all have a
>> > consistent unit system. \
>> >
>> > I *could* just attach a unit registry to the scene object, but then
>> since
>> > all of these different objects get created independently, it doesn't
>> help to
>> > have a unit system defined as part of the scene object, since I can't
>> access
>> > the scene from the camera object.
>> >
>> > What I'd like to do to fix this is to alter the VR API. Instead of being
>> > able to do something like:
>> >
>> > sc = Scene()
>> > cam = Camera()
>> > sc.camera = cam
>> >
>> > I'd like to make it so you need to do:
>> >
>> > sc = Scene()
>> > sc.add_camera()
>> >
>> > This way I can ensure that the camera object always has a reference to
>> the
>> > Scene object it's attached to, and thus I'll always be able to refer to
>> a
>> > consistent unit system.
>> >
>> > Does anyone have any objections to this?
>> >
>> > -Nathan
>> >
>> > _______________________________________________
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>> > http://lists.spacepope.org/listinfo.cgi/yt-dev-spacepope.org
>> >
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>>
>
>
>
> --
> Michael Zingale
> Associate Professor
>
> Dept. of Physics & Astronomy • Stony Brook University • Stony Brook, NY
> 11794-3800
> *phone*:  631-632-8225
> *e-mail*: Michael.Zingale at stonybrook.edu
> *web*: http://www.astro.sunysb.edu/mzingale
> github: http://github.com/zingale
>
>
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