Implement Frustum Culling/Panoramic/Distance stream resolution

[mwfarb]

Using ARENAJitsi.setResolutionRemotes() to update these allocations as we want to drop culled video to 0p, set the video sphere we are in to 1920p, set other videospheres we are not in back to 360p, set far users in view to 180p, whathaveyou. So we will want to track distance to other users, and the update ARENAJitsi.setResolutionRemotes() every 1-5 seconds or so, examples:

• [x] 0p for jitsiId outside frustum.
• [ ] 0p for jitsiId inside frustum, but occluded.
• [x] 0p for jitsiId inside frustum, > 100m distant.
• [x] 180p for jitsiId inside frustum, 50-100m distant.
• [x] 360p for jitsiId inside frustum, 0-50m distant.
• [ ] 0p for jitsiId panoramic sphere outside frustum.
• [ ] 480p for jitsiId panoramic sphere user is outside of.
• [ ] 1920p for jitsiId panoramic sphere user is inside of.

[hi-liang]

Do we have any cheap ways to determine occlusion?

Otherwise this same type of period culling based both on distance and frustrum is almost exactly same as I was thinking for my ArenaMegaVerse idea, as applied to entire subscenes

[mwfarb]

I'm not sure. It would seem we'd need to maintain a list of frustums from the local camera to each remote user's position and then decide if the frustum intersects the remote user or not. It seems like loads of math.

[mwfarb]

186 related

[mwfarb]

Distance and most frustum features added in https://github.com/conix-center/ARENA-core/pull/446. Panoramic forthcoming.