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--- ai:patches:eulertoquaternion [2018/12/04 16:10] – [Manual] icke_siegen
+++ ai:patches:eulertoquaternion [2018/12/04 16:20] (current) – external edit 127.0.0.1
@@ Line 23: / Line 23: @@
 >When creating this project I ran into a strange problem: x, y, and z rotation are no independent from each other. I described it like this:
 >
->> in AI, the x and y rotation of a screen fixture refer to the world’s x and y axis. However, z rotation refers to the screen’s z axis. This leads to the situation – with x_rot = -90 – that y_rot and z_rot do exactly the same, but the screen cannot be tilted sideways (what z_rotation does).
+>... in AI, the x and y rotation of a screen fixture refer to the world’s x and y axis. However, z rotation refers to the screen’s z axis. This leads to the situation – with x_rot = -90 – that y_rot and z_rot do exactly the same, but the screen cannot be tilted sideways (what z_rotation does).
 >
 >Dave Green was kind enough to give a thorough explanation of this:
+>
 >
 >> You have discovered one of the draw backs of the Euler angle system we use in to rotate screens in Ai.  Gimbal Lock.  There is a short video explaining the problem here: https://www.youtube.com/watch?v=zc8b2Jo7mno.  The advantage to using the Euler system for angles is that everybody understands it.  But the trade off is that it has limitations in the form of gimbal lock.