View Full Version : Rotation inertia problem

03 March 2003, 05:59 PM

can someone help me solving this problem:

i use inertia on rotation,
when angle reaches Pi, it continues to -Pi, logic.

so, when i use inertia, when angle changes sign, speed is suddelny fast!

how can i do ?

thanks to help

see my problem here: angle-inertia (

Ian Jones
03 March 2003, 01:56 AM
It's the Flash system of angles that is stuffing you around. Flash uses an awkward coordinate system. As it gets to 360 it does its calculation and you get -360 which unfortunately makes it skip around to that point in the opposite direction. Can you make the code available please, so I can see it. I am not that good at maths or actionscript yet so I would really like to see how it actually works.

You should be able to find the solution on some tutorial websites like

Ian Jones
03 March 2003, 08:40 AM
Also try its pretty useful.

03 March 2003, 12:48 PM
i'll have something ready for you in a minute :)

-> click (

Ian Jones
03 March 2003, 10:48 AM
Thanks Knebbes! Has been plaguing me for a while... never bothered to find a solution. :)

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