ho ho! Errata ! Please read below as > I am NOT so expert about Linux's Real Time Clock (RTC) features.
sorry Alessandro --- Alessandro Borges <[EMAIL PROTECTED]> escreveu: > 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 > > ______________________________________________________________________ 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".
