I have a question about rotation direction in 3D. For deriving the three matrices around the x, y, and z axis, it appears as if we are rotating clockwise rather than counter-clockwise. Am I looking at it wrong here?
Hi @Chase_Switzer,
We’re using a left-handed 3D coordinate system here, due to it being the version that’s widely used by most popular game engines.
This is different to a lot of of math/physics textbooks which traditionally teach a right-handed system.
When we rotate on a left-handed coordinates system, the rotations are always applied clockwise.
One way to remember this is to point you thumb along the axis of rotation and then look at the direction that your fingers curl inward.
I hope that helps.
P.S. I’ve noticed that the beginning of the lecture has been cut off, so I’ll get that fixed asap.
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