RubaTwo related questions for computer graphics people:
1. is it true that ray/line/whatever intersection tests are common in interviews?
2. how common are questions of this nature, where you have equations memorized?🤔
(boosts appreciated pls)
Innes McK1. yes, super common
2. they're not really about memorizing equations, more about showing you have a working grasp of 3d maths and basic algebraic operations - if you're comfortable with vectors, dot product, cross product you can likely get to the answer, interviewers are looking to hear your thought process
Tom Forsyth@im @ruba You shouldn't have to memorize much. The main thing about the quadratic solution equation is not knowing what it is - you can look that up on wikipedia - it's knowing that you need to look up the section on catastrophic cancellation: https://en.wikipedia.org/wiki/Quadratic_equation#Avoiding_loss_of_significance
@TomF see, that's what i'd like to focus on, but I worry I'll just be asked "intersect an AABB and a plane" and knowing my memory, I'll come up blank
@ruba OK, so what? So do all your fellow applicants. How do you cope with "I can't remember for shit"? That's what matters.
@TomF be charming and distract with good jokes :D but in seriousness, that's why I asked :) for preparation and such. also, the memory aspect has been getting noticeably *a lot* worse for me, don't know if it's long covid or what, so I'm a bit worried!
@TomF I also initially asked because I saw an old post somewhere saying this is how graphics interviews go and was wondering if that advice still stands
@ruba You can't pretend to be who you aren't. Even if you could, you'd get hired and then fired in a few months. What you can do is use what you do best to figure out coping strategies for what you do worst.