Afternoon all,
I'm wondering if anyone can shed any light on why I can't load a really simple .wrl file in using a VRML97Loader. I'm not really very up on VRML and it's relationship with Java3D, so I am quite possibly being entirely lame here, but the code I have is like this:
VRML97Loader l = new VRML97Loader( VRML97Loader.LOAD_ALL);
try { FileReader f = new FileReader(fileName);
Scene s = l.load(f); BranchGroup b = s.getSceneGroup(); Shape3D v = (Shape3D) b.getChild(0); this.setGeometry(v.getGeometry()); } catch (FileNotFoundException e) {
// and so on.
The problem I get is that when I try to load it I get a nullPointerException from the l.load(f) method that looks a bit like this:
java.lang.NullPointerException at org.web3d.j3d.loaders.BaseLoader.load(BaseLoader.java:196)
Can anyone who has dealt with this before let me know what I'm doing wrong?
If I hand it the filename directly I get this:
org.ietf.uri.UnsupportedServiceException: file is not supported at org.ietf.uri.URL.getResource(URL.java:472) at org.web3d.vrml.sav.InputSource.getCharacterStream(InputSource.java:158)
Any suggestions?
-ben
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Its dieing on a getBaseUrl() call. We need to know the baseUrl path for a Reader. So before calling load you can call setBaseUrl on the loader and it should work. Or you can use the following code snippet that doesn't use a Reader.
if(staticLoad)
flag &= ~VRML97Loader.LOAD_BEHAVIOR_NODES;VRML97Loader loader = new VRML97Loader(flag);
// if the file is a directory, ignore it
File f = new File(file);
if(f.exists() && !f.isFile()) {
System.out.println("Can't load directories specified");
System.exit(1);
} URL url = null;
Scene scene = null; try {
url = new URL(file);
} catch (MalformedURLException badUrl) {
// if the location is not a URL, this is what you get
} try {
if(url != null)
scene = loader.load(url);
else
scene = loader.load(file);
} catch(Exception e) {
System.out.println("Exception loading URL:" + e);
e.printStackTrace();
System.exit(0);
}-- Alan Hudson President: Yumetech, Inc. http://www.yumetech.com/ Web3D Open Source Chair http://www.web3d.org/TaskGroups/source/
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