July 26th, 2020

Coordinate Systems

I'm always forgetting right-hand versus left-hand. Now I can just check this page when future me can't remember...

Left Handed

Just use this one. Positive x goes from left to right, positive y goes from bottom to top, and positive z goes into the distance

Right Handed

Same as left handed, but the z is flipped (negative z extends into the distance).


  • Coordinate Systems (Direct3D 9)