I did have art class in high school, and I’m aware that most artists won’t have been taught the formulas in full mathematical detail. But you’re the one describ

I did have art class in high school, and I’m aware that most artists won’t have been taught the formulas in full mathematical detail. But you’re the one describing your method as “based on how it gets taught in art class” and calling it “strict” and “true” three-point perspective (or at least calling the usual method “not true three-point perspective”). What I’m suggesting is that maybe you should examine the extra assumptions you made in addition to the rules from art class before drawing conclusions from them. (Filed https://github.com/Pomax/three-point-perspective/issues/1 https://github.com/Pomax/three-point-perspective/issues/1 as you asked.)