Re:Behind the Tech with John Carmack: 5k Immersive Video
by Retric on Tuesday June 19, 2018 @01:25PM
(#17348548)
Quick edit, it's 4pi r I was thinking volume for a second there.
As to tiling, I am saying if cut a sphere into 5120 slices, and the middle slice is fine with 5120 pixels. Then the poles are going to have ~1 pixel on them. How you tile them is really a question of tradeoffs.
Re:Behind the Tech with John Carmack: 5k Immersive Video
by cma on Tuesday June 19, 2018 @01:27PM
(#17348563)
I think you should draw a diagram and link it.
> As to tiling, I am saying if cut a sphere into 5120 slices, and the middle slice is fine with 5120 pixels.
What kind of slices? Like sections of an orange? Like longitude?
Starting where? Turning where?
> However, if you tile like that with 5120 x 5120 you get a lot of wasted pixels at the poles.
You didn't mention tiling.
> If a 5120 pixel Radius is fine... then Radius of sphere = 2 pi * r, and Surface of sphere is 4/3 pi * r^2. so 5120 / 2pi =r => 4/3 * (5120/2pi)^2 => (5120)^2 /(3 pi) ~= we need ~10% of 5280^2.
More details on what you are trying to say at each step please.