Re: animation / speed

• To: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Subject: Re: animation / speed
• From: Timo Thomas <tthomas@xxxxxxxxxxxxxxxxxxxxxxxx>
• Date: Wed, 31 Jan 2001 18:21:33 +0100

Bill Hibbard wrote:
> 
> Hi Timo,
> 
> > thanks for your fast help. The DisplayImplJ3D with a TwoDDisplayRendererJ3D 
> > is indeed a lot faster and probably satisfies my speed needs. However, 
> > though I only changed the type of display from
> >
> >   display = new DisplayImplJ2D("display1");
> >
> > to
> >
> >   display = new DisplayImplJ3D("display1", new TwoDDisplayRendererJ3D());
> >
> > my application crashs after a while with a 
> > java.lang.IndexOutOfBoundsException [...] at javax.media.j3d.J3dThread.run. 
> > Then I tried the P5_01 example with the 3D modification and set the number 
> > sample points to 10000. Same error after a while (see full error trace 
> > below). The original 2D version works fine (and slow) with 10000 samples. I 
> > think the error is somewhere in VisAD or Java3D. You find the modificated 
> > P5_01 attached.
> 
> This is a well known bug in Java3D. You must be using Java3D version
> 1.1.3 or 1.2. You can get version 1.1.2 for Windows and Solaris from
> the VisAD web page, and 1.1.2 does not have this bug. Or you can
> download Java3D version 1.2.1 beta 2 from Sun (which has a few small
> problems but at least does not seem to throw Exceptions). We are
> working closely with the Sun Java3D team to ensure that version 1.2.1
> won't have any show-stopper bugs for VisAD.

Hmm... I'm using Java3D version 1.2. But a look in the java3d docs
revealed that this version (from blackdown, for linux) was tested using
Java SDK 1.2.2. I was using SDK 1.3. So I installed the 1.2.2 version
and tried the example again but no change. Or do I have to recompile the
VisAD library with the 1.2.2 compiler?

> By the way, you emailer does not insert end-of-line characters in
> your emails, which make them a bit hard to read (leads me to believe
> you are running on Windows). If you can fnd a way to put end of line
> characters in, that would be nice.

Well, you're not the first person complaining about this, so I changed
it back to automatic wrapping again. This mail should be ok.

Timo
-- 
__.__________
 |lmo |homas

• Follow-Ups:
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    • From: Bill Hibbard

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    • From: Timo Thomas
  • Re: animation / speed
    • From: Bill Hibbard