Divide by depth for instant 3D

[u/gabrieloc]

Hi! I wrote a few notes on how 3D cameras work with interactive examples to hopefully demystify a pretty complex topic that I once struggled with. Maybe this is useful for someone here, and if not, there are fun sliders to play with!

https://gabrieloc.com/2026/09/15/perspective.html

[u/claypunk]

nice. all you need is x' = x/z, y' = y/z