I also had J3DTimer failures under some XP and under (all) Linux. The work-around I found was to use System.currentTimeMillis() instead J3DTimer, as Blackdown.org also recomends.
Some empirical measures give me the following precison for System.currentTimeMillis(): * ~10ms precision under Win2K/XP;(enougth for several kind of animations) * ~50ms precision under Win98;(bad) * <10ms precision under some Linux distros; (usually enought) I found some Linux with very high precision clock, but I am so expert about Linux's Real Time Clock (RTC) features. I did not test the new Tiger's timer. In my current project Iam using another kind of clock: the JavaSound's midi clock. When the midi sound is playing I pick current music timestamp. Of course only sound synchronized animations can use it. Alessandro --- แอนดรูว์_เดวิสัน_(Andrew_Davison) <[EMAIL PROTECTED]> escreveu: > John Wright wrote: > > As far as I know, several of us have tested this > and found it to be a > > bug on some WinXP systems (it doesn't require a > fast CPU, it's just a > > bug in WinXP). > > This is not the impression given by the bug report. > Perhaps > you could add your opinion at the end of: > > http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5016273 > > In the j3d-interest list, you're the only person to > have mentioned > the bug previously. > > > > The simplist solution is to test for the return of > zero > > and then knowing your running on a defective WinXP > system use the normal > > Java timer routines. (i.e. your code needs two > sets of timer code - one > > for WinXP and one for all other OS > configurations). > > Yes. What timer alternative did you use? > > But what about uses of J3DTimer inside other > parts of Java 3D? For example, J3DTimer is used by > the > SensorEventAgent class in the Java 3D utilities. > Since the timer usage is 'hidden', it may be > too difficult to substitute in another timer. > > Has anyone experience of this problem? > > --- > My own guess is that System.nanoTime() and J3DTimer > are implemented > on Windows in exactly the same way. So does > nanoTime() fail when > J3DTimer fails? > > - Andrew > > =========================================================================== > 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". ______________________________________________________________________ Participe da pesquisa global sobre o Yahoo! Mail: http://br.surveys.yahoo.com/global_mail_survey_br =========================================================================== 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".
