I agree, I don't see that plplot would need to spin or in any other way 
manipulate the 3d plots.  It would be up to the programmer to have the 
GL context wrapped in a 3D GL viewer, for example, if that kind of 
functionality is desired.

On 03/19/2015 12:03 PM, Hazen Babcock wrote:
>> From: Norman Goldstein <norm...@telus.net>
>>
>> Let me know if you would like to discuss sharing the load ...
>>
>>
>>
>> On 03/18/2015 02:48 PM, Chris Marshall wrote:
>>> Actually it is a work in progress...just slowly.
>>>
>>> On Mar 18, 2015 12:06 PM, "Norman Goldstein" <norm...@telus.net
>>> <mailto:norm...@telus.net>> wrote:
>>>
>>>       What do you think of an OpenGL device, where the user supplies a GL
>>>       context, and plplot writes into it with OpenGL primitives -- so,
>>>       neither
>>>       file-based nor raster-based?  plplot's svg is a non-raster-based,
>>>       but is
>>>       file-based.
> Chris has been interested in this for a while, mostly because it would
> be one of our more OS independent devices as pretty much any OS these
> days supports OpenGL. Ultimately I think it would be similar to the
> Cairo and Qt drivers where you would have a choice of providing (and
> managing) a GL context (extqt, extcairo), or PLplot would do all of this
> for you (qtwidget, xcairo). I'm not sure how far Chris has gotten on
> this project since our last discussion, but we do at least have a
> working outline of the driver including integration into the PLplot
> build system.
>
> I guess I don't foresee spinning 3D plots as this would involve
> extensive changes to PLplot core.
>
> best,
> -Hazen
>
>
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