Transform.basis seems wrong way around ?

Question

I was reading the Godot documentation trying to understand 3d rotations.
I made a test scene where the yellow prism is rotated 90 degrees in the editor. I then printed the transform basis :

The code I used is this :

var loc_transf = $"../Camera_Mark3".transform
print(loc_transf.basis)

The result was :

((-0, 0, 1), (0, 1, 0), (-1, 0, -0))

... which seems like the wrong way around ??? It seems to me that the local X axis of the yellow prism is facing towards the negative Z, so it should be (0,0,-1). Same thing for the local Z-axis ; it faces in the direction of the positive X, so it should be (+1,0,0) ?

Answer 1

Basis storage is transposed, but if you use the .x, .y and .z accessors you will get the same axes you see in the editor.
See https://github.com/godotengine/godot/issues/26432

Comments

Thanks for the link ! I understand now.

Maybe the documentation should mention this ... I'm sure others will be confused as well.