[Cst-1b] 99.6.4 Graphics / Mistake in example

[M.Y.W.Y.B.]

Ok, I think I've got it now. I made a mistake yesterday night:

If you first rotate the standard cone about y and then about x then the
angles must be:

1) y: -13.34
2) x: +18.43

If you do it the way Kevin did it, I think the angles should be:

1) y: -22.62
2) z: +53.13

(Kevin: the rotation about y is *clockwise* 22.62 degrees, so it's really
-22.62 degrees)

Nathan: I can't figure out how you got 76.66 degrees about z-axis. In the
reverse transformation that must have been your first rotation, so either
you rotated the transformed cone onto the xz plane (-53.13 degrees or 126.87
degrees) or onto the yz plane (36.87 degrees or -143.13 degrees).


*********************

In the lecture (page 132) we had the example with the cylinder. The given
solution was: 

Rotate about z by -19.47
Rotate about x by +45

I am pretty sure it should be -45 degrees about x actually.


*******************

Mo