Remove java3d

[gagern]

Even after running ./sage -i java3d, the java3d viewer will fail to load:

sage: D=dodecahedron()
sage: D.show(viewer="java3d", verbosity=True)
Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/j3d/Canvas3D
at org.sagemath.sage3d.ObjectViewerApplet.showView(ObjectViewerApplet.java:49)
at org.sagemath.sage3d.ObjectViewerApplet.showView(ObjectViewerApplet.java:40)
at org.sagemath.sage3d.ObjectViewerApp.main(ObjectViewerApp.java:28)
Caused by: java.lang.ClassNotFoundException: javax.media.j3d.Canvas3D
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 3 more

Adding a set -x to the sage3d script I see it executing these commands:

++ …/sage/local/bin/sage-pypkg-location sagenb
+ SAGE3D_HOME=…/sage/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/data/sage3d
+ cd …/sage/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/data/sage3d
+ export LD_LIBRARY_PATH=…/sage/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/data/sage3d/lib/amd64
+ LD_LIBRARY_PATH=…/sage/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/data/sage3d/lib/amd64
+ java -classpath lib/sage3d.jar:lib/ext/j3dcore.jar:lib/ext/vecmath.jar:lib/ext/j3dutils.jar org.sagemath.sage3d.ObjectViewerApp …/tmp_ctQ56m.obj

That …/sage3d/lib/amd64 directory mentioned in LD_LIBRARY_PATH does not exist. Its parent, the lib directory, contains sage3d.jar as its sole content. Most things mentioned on the classpath don't exist either. instead, sage/local/java/sun-libs/ contains several jars related to Java3D.

I also wonder about the version of the spkg, which is given as 20070901. I think there are newer versions around, although they are a bit hard to find. Referencs I found:

• http://forum.jogamp.org/java3d-f3728156.html
• http://gouessej.wordpress.com/2012/08/01/java-3d-est-de-retour-java-3d-is-back/
• http://jogamp.org/deployment/java3d/

I would suggest packaging Java3D 1.6.0-pre10 as a spkg and trying to get it to work. Or dump support for Java3D altogether.

Component: graphics

Keywords: java3d

Author: Frédéric Chapoton

Branch/Commit: b9a1299

Reviewer: Volker Braun

Issue created by migration from https://trac.sagemath.org/ticket/16647

[kcrisman]

comment:1

Yeah, dumping it may be the thing. Or at least to raise a warning that java3d doesn't currently work well or something...

[williamstein]

comment:3

I vote for dumping java3d "support". It's not like we are supporting it. This was just a package/functionality that Robert Bradshaw put together as a sort of herculean challenge at Sage Days 7.

[kcrisman]

comment:4

In that event, there would probably be some places in sagenb that would need to change too. Especially with jsmol working and various other js libraries working in the cell and cloud, this seems okay.

[kcrisman]

comment:5

Also note that there is a file plot3d/help (see this comment) that should then be removed.

[fchapoton]

Branch: public/16647

[fchapoton]

Changed keywords from none to java3d

[fchapoton]

Commit: b9a1299

[fchapoton]

comment:7

Here is a first try, maybe there are still things to do in packages or notebook ?

---

New commits:

b9a1299

trac #16647 removal of support for java3d

[fchapoton]

Author: Frédéric Chapoton

[vbraun]

comment:9

I tried it a few months ago and java3d works. Note that its a separate install and not part of the standard Java download, so its a bit tricky to install to put it mildly. Though I agree that it is so obscure that it is of no real use.

[jdemeyer]

comment:12

SageNB certainly has infrastructure to support java3d through a Java package which is called "sage3d". You can find the sources in ./data/sage3d/src/org/sagemath/sage3d/. I don't really understand what it does.

[vbraun]

Reviewer: Volker Braun

[vbraun]

Changed branch from public/16647 to b9a1299