Re: [x3d-public] NullPointerException when loading scene with script node

["George Anastassakis" <anastas@unipi.gr>]

Thanx to all for so many replies in such little time. Indeed, after 
correcting eventIn and ecmascript I was able to load the x3d file (I guess I 
must read the x3d spec a bit more thoroughly).

Still, I can't load the vrml version of the file using the code I posted in 
my previous message, which is not a big deal but it would be good to know 
why. The file would, in that case, be:

#VRML V2.0 utf8
DEF s Shape {
appearance Appearance { }
geometry Box { }
}
DEF sc Script {
eventIn SFTime test
url "javascript: function test(value) { }"
}

A NullPointerException is generated by line 299 of ScriptContentLoader.java:

ScriptEngine engine = (ScriptEngine)engineMap.get(mime_type);

Any ideas? Just a reminder that Xj3D Browser can indeed load the above file 
without any errors.

George

----- Original Message ----- 
From: "Alan Hudson" <giles@yumetech.com>
To: "George Anastassakis" <anastas@unipi.gr>
Cc: <x3d-public@web3d.org>
Sent: Wednesday, March 22, 2006 9:54 PM
Subject: Re: [x3d-public] NullPointerException when loading scene with 
script node


> George Anastassakis wrote:
> > Hello all
> >
> > I'm trying to load a scene with a Shape and a Script node but I cannot 
> > get it right. The file is:
> >
> > #X3D V3.0 utf8
> > PROFILE Immersive
> > DEF s Shape {
> > appearance Appearance { }
> > geometry Box { }
> > }
> > DEF sc Script {
> > eventIn SFTime test
> this is not valid X3D.  it must be inputOnly
>
> > url "javascript: function test(value) { }"
> > }
> this should be ecmascript:
>
> > Of course, the Script node does nothing but I'm just trying to get it to 
> > load. The code I use is the following:
> >
> > Properties props = new Properties();
> > x3dComp = BrowserFactory.createX3DComponent(props);
> > Browser browser = x3dComp.getBrowser();
> > contentPane.add((JPanel) x3dComp.getImplementation());
> > X3DScene scene = browser.createX3DFromURL(new String[] {"test.wrl"});
> this needs to be an X3D file, not a VRML file.
>
> > browser.replaceWorld(scene);
> >
> > The createX3DFromURL call generates a NullPointerException, which seems 
> > to be caused by line 302 in SAIBrowser.java (scene is null?):
> >
> > 301: VRMLScene scene=theBrowserImpl.createX3DFromURL(url);
> > 302: VRMLExecutionSpace space = (VRMLExecutionSpace)scene.getRootNode();
> >
> > However, if I change the header to "#VRML V2.0 utf8" and remove the 
> > PROFILE statement, Xj3D Browser does load the file but my code does not.
> your mixing specs.  make sure you either do things completely VRML or X3D.
>
> > I guess I must be doing something really stupid here but I can't figure 
> > out what. Any help?
>
>
> --
> Alan Hudson
>
> President Yumetech, Inc.                               www.yumetech.com
> President Web3D Consortium                             www.web3d.org
> 206 340 8900
> -------------------------------------------------------------------------
> for list subscription/unsubscription,
> go to 
> http://www.web3d.org/cgi-bin/public_list_signup/lwgate/listsavail.html

-------------------------------------------------------------------------
for list subscription/unsubscription,
go to http://www.web3d.org/cgi-bin/public_list_signup/lwgate/listsavail.html