this post was submitted on 01 Dec 2025
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Above and below the page/plane is the z-axis.
But some people "hold" the page up in front of them, or down on the table.
My "page" is my monitor's screen, a window into many virtual worlds that extend past the plane of my screen.
Actually, my screen is a curved surface. So the 3d virtual world is projected onto a 2d plane which is then projected back onto a 3d curved screen. The math to make it look correct in the final projection is different from what makes it look correct on a flat screen, though I don't know if any renderers actually do this correction. Not that I think the difference is huge.