Ok thanks a lot.
You might want to know there is a mathematical convention. ANYWAY
If everybody likes it that way its great
Love the engine, just wanted to help.
Thanks again

Yes I am looking at the origin from a positive X value because rotation axis is positive X

I have to disagree going from (0 1 0 0) to (0 0 -1 0) is clockwise. (I am "looking" from positive X)

Thanks for the quick response.

BTW, I believe rotateY and rotateZ also have the same problem.

Hello,

Thanks for your work. I think I might have encountered a misleading method description. Indeed the doc says rotateX creates a counter-clockwise rotation for positive angles but it appears to create a clockwise rotation matrix.

How you can test:

Matrix mat = new Matrix();
mat.rotateX((float)Math.PI/2);
Logger.Log(mat.ToString());


You get the matrix:
1  0  0  0
0  0  -1 0
0  1  0  0
0  0  0  1
Which sends (0  1  0  0) to (0  0  -1  0). (I'm assuming row vectors)
Which corresponds to clockwise