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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
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
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| Dirk Slawinski | The Centre for Water Research |
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