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andro · Jul 26th, 2006, 12:03 PM

I may not have understood correctly, but..

Rotating about the X axis:

[1, 0, 0]
[0, cos x, -sin x]
[0, sin x, cos x]

Rotating about the Y axis:

[cos x, 0, sin x]
[0, 1, 0]
[-sin x, 0, cos x]

Rotating about Z:

[cos x, -sin x, 0]
[sin x, cos x, 0]
[0, 0, 1]

Although that may or may not do what you want, I haven't touched that stuff in a while now

EDIT: You know I think this applies to transforming actual objects in a 3D coordinate space... not physically rotating a 3x3 matrix in place like you are describing... never mind all of this.

Jul 26th, 2006, 12:03 PM	#12
andro Professional Programmer Join Date: Oct 2005 Location: California Posts: 294 Rep Power: 3	I may not have understood correctly, but.. Rotating about the X axis: [1, 0, 0] [0, cos x, -sin x] [0, sin x, cos x] Rotating about the Y axis: [cos x, 0, sin x] [0, 1, 0] [-sin x, 0, cos x] Rotating about Z: [cos x, -sin x, 0] [sin x, cos x, 0] [0, 0, 1] Although that may or may not do what you want, I haven't touched that stuff in a while now EDIT: You know I think this applies to transforming actual objects in a 3D coordinate space... not physically rotating a 3x3 matrix in place like you are describing... never mind all of this.