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Re: Mac OS X 10.1 / VIsAD problems

Dear Russ Rew and Dirk Slawinski,

Thanks for the feedback.
Likewise, I have been using Ugo Taddei's tutorial examples for Mac OS X 10.1 testing. Specifically, P2_11 should be a curve with some red points but in OS X 10.1 appears to be some connected lines and red boxes (or super large points).
As previously stated, I have used VisAD 2D rather intensively in Mac OS X 10.0.x without any significant problems. I solved most of the "out-of-memory" and "bus error" problems by setting the maximum buffer size of the Java stack at the command line: 

java -Xmx128m VisADprogram   (this limits Java to 128 MB,)
As suggested in OS X 10.1 Java Release Notes, which provide some good information on potential Java graphics problems:; 

http://developer.apple.com/techpubs/macosx/ReleaseNotes/JavaGMWebReleaseNotes.html,

I thought the problem could be caused by Quartz's "antialiasing."

So with Project Builder 1.1, I added the lines :

        com.apple.macosx.AntiAliasedGraphicsOn=false
        com.apple.macosx.AntiAliasedTextOn=false

to the MRJApp.properties file, but this did not solve the problem.
So, for now I am going to have to the NOAA' s scientific graphic toolkit (SGT), as it appears to work on 10.1. 


Thanks again,
John

<br><br><br>
John Philip Anderson
215 West Newman Road
Okemos, Michigan 48864-1332
Email: jpanderson_215@xxxxxxxxxxx
Telepone: (517)349-6131


From: Dirk Slawinski <slawinski@xxxxxxxxxxxxxx>
To: Russ Rew <russ@xxxxxxxxxxxxxxxx>, "John Philip Anderson" <jpanderson_215@xxxxxxxxxxx> 
CC: visad-list@xxxxxxxxxxxxx
Subject: Re: Mac OS X 10.1 / VIsAD problems
Date: Wed, 3 Oct 2001 08:34:32 +0800
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At 4:56 PM -0600 2/10/01, Russ Rew wrote:

Hi John,
I run VisAD on Mac OS X and it worked great, until I upgraded to OS X 10.1. Now, the graphics appear distorted. Curves are now lines, points are now 
 boxes and etc.

 I do not believe that this problem is in any way specific to VisAD but
rather produced by Apple's Quartz graphics engine that overides the JDK in 
 OS X.
I am taking this issue up with Apple but I am wondering if any one out there is also running VisAD on Mac OS X and if they have had to deal with this 
 issue yet?


I've installed VisAD on a Mac OS X system and tried many of the test
examples.  Without the Java3D extension, most of the VisAD examples
won't run, but VisAD seemed to work for the Java2D examples.  However,
the simple 2D plot from Ugo Taddei's tutorial:

  http://www.ssec.wisc.edu/~billh/tutorial/s1/P1_01.java

produced an incorrect plot under the previous Mac OS X release, due to
some bug in the Mac Java implementation that I never isolated.  I just
installed the new Mac OS X 10.1 release and Developer Tools, and
noticed that the problem is still there.  I'd like to make this
independent of VisAD for a bug report to Apple, but that requires some
work ...


  I remember having similar issues with line drawings, however, grid
shading worked fine.  Unfortunately I could only use one color scheme
at a time.  That is I could not color a range of values, say min_val
to zero, one color scheme, say only blues, and another range, say >
zero, another color, say greens.  If I only used one color things
worked great if I used two I got a Bus Error.  I have not upgraded to
10.1 yet (waiting on CDs, things take a while to get here in
Australia <groan>) but I plan on seeing if the new Java
implementation will fix this apparent memory issue.


....

Incidentally, things are looking up for Java3D on Mac OS X, since
Apple hired Gerard Ziemski, the programmer responsible for porting
GL4Java for Mac OS X.


  Yes, that was good news a few weeks back.  I am looking forward to
his work.  One could use gl4java along with JFreeD (though the later
seems not to be available any more).  Here is to Macs and Java3D!


--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
russ@xxxxxxxxxxxxxxxx                     http://www.unidata.ucar.edu



--
---
                                              TTFN  Dirk  =:>

/--------------------------------------------------------------\
|    Dirk Slawinski     |    The Centre for Water Research     |
|  Research Associate   |   University of Western Australia    |
|                                                              |
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