Hi Greg, The viewpoint, or ray origin, is different for each column of pixels in a stereo ODS rendering. If you start with a viewpoint, and draw a circle with diameter that is the distance between one's pupils, then the origin for each ray should be at a point where the ray is tangent to the circle (on the left side of the circle for left eye and right side for right eye). It's explained & illustrated well here: https://developers.google.com/vr/jump/rendering-ods-content.pdf
I don't see how clipping planes could be used to modify the ray origin, but I could be wrong. And this goes a ways back in the thread, but one instance where smaller than 180° x 360° sized equirectangular views would be necessary is if a user wanted to use rpiece to render the full view. Best, Andy On Tue, Jan 10, 2017 at 10:38 AM, Gregory J. Ward <gregoryjw...@gmail.com> wrote: > Hi Victor, > > I thought that there was some trick to doing stereo 360° views that > involved rotating the eye positions with the ray directions to keep them at > right angles. Andy (McNeil), can you help us out? > > -Greg > > *From: *Victor LRG <rio...@gmail.com> > > *Date: *January 10, 2017 2:14:48 AM PST > > > I agree with Nathaniel that the general use would be similar to cylindrical > or angular fisheye views in terms of view apertures. Personally, I use > the equirectangular view in four combinations: 180-360 deg horizontally and > 90-180 deg vertically, and then as a base for other fancier view types when > I need them. > > With regards to the stereo offset I wonder if it could be added with a bit > of work using the standard clipping plane offset as an stereo one? > > Victor > > On 9 January 2017 at 15:59, Guglielmetti, Robert < > robert.guglielme...@nrel.gov> wrote: > >> I’ll keep an eye out, should this be added to the standard palette of >> views in the source. I think it’s pretty easy to add it to the Qt rvu... >> >> On 1/8/17, 10:18 AM, "Gregory J. Ward" <gregoryjw...@gmail.com> wrote: >> >> >Hi Victor (& Nathaniel), >> > >> > >> >I am happy to take a look at the code and see how much effort it would be >> >to integrate. I have a question first, however. >> > >> > >> >Is the "equirectangular" view useful for anything less than a full >> >panorama? Would people want to use it for smaller/different views, or do >> >you always set vertical to 180° and horizontal to 360° in every >> >application? >> > >> > >> >If you only use this view for one purpose, then I wonder if it is really >> >worth having a view implemented in Radiance, which needs to handle every >> >possible setting correctly. Also, I wonder in such a case if you have >> >tested every possible (legal) setting? >> > >> > >> >Cheers, >> >-Greg >> > > _______________________________________________ > Radiance-dev mailing list > Radiance-dev@radiance-online.org > http://www.radiance-online.org/mailman/listinfo/radiance-dev > >
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