Google for grimbal lock... -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Andreas Rønning Verzonden: donderdag 20 april 2006 16:24 Aan: Flashcoders mailing list Onderwerp: [Flashcoders] "grab and twist" rotary controller
I have some light issues with a UI element i'm working on. It's a turntable thing where the user rotates a plane by pressing a touchscreen and dragging. It's not hard to make a controller that adapts to the angle from where it was pushed to where the mouse is dragged (atan2 etc), but i run into problems when the user presses the left side and turns the table to the right, and then grabs the left side again to continue the rotation. The table flips rather than maintain the offset, and i can't really seem to figure out how to maintain the offset across the sinCos flip of 180/-180. Terrible trig. Anyone done this thing before and have example code i can look at? Thanks - Andreas _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com _______________________________________________ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
