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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