Hello Max,

I have tested the pushFrame function. Unfortunately the function gives confusing results and crashes in particular situations. After a look in the code I saw one thing that causes definitely a problem:
>>>> ry = -Math.asin(frame.zaxis.x);
The results range is limited:-( As mentioned by you, it's a hard peace of cake;-)

Have a nice day
and let fly @'y'@
Karsten