Re: [JAVA3D] Java3D and Mouse Listener question

[Andy]

Thanks to all your reply, I will change my design to using thread then, cuz it sounds much easier for me to program in threads this way.  :) Andy Florin Herinean wrote: Being afraid of threads is pretty stupid. Threads are what makes things to happen smooth and to promptly react regardless of what else the computer is doing. If you're not using threads, then *everything* in your program will happen sequentialy, i.e. you won't be able to do 2 things simultaneous. Besides that, threads are as stable as anything. If you suppose that a thread may cease functioning, the same might apply to the main thread, the one with the loop. In case you didn't know, everything in java is based on threads. A running java program have at the same time, several threads running simultaneous, even if your program does nothing more than HelloWorld ! Now you're concrete example has a very simple solution: Your "do something" code is in a behavior attached to your scene. You register a mouse move listener with your canvas3d. You check in the listener the current position of the mouse, if it's in the desired area, you start the behavior (if not already started), and if it's out of the area you stop the behavior (if it's not already stopped). The behavior can have a wake criterion as elapsed time or elapsed frames, as you like. You're simply not interested in anything else. And your sistem will be much more responsive, since you're not eating cpu cycles siting in a tight loop. That way you won't explicitly create threads, although you're using at least three of them: the awt dispatcher thread to process the mouse events, the behavior thread which will execute the code inside of your behavior and the rendering thread which will render the image. Learn to think in terms of events: you create events, you react to events. Cheers, Florin -----Original Message----- From: Discussion list for Java 3D API =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".