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import-bot (20211) [Avatar] Offline
#1
[Originally posted by ymkwah]

I have an error message appearing after clicking a .bat file which has been
included in each example directory.

WARNING: Canvas3D constructed with a null GraphicsConfiguration.
Sound bank not set.

Could anyone explain this to me. Thanks.
import-bot (20211) [Avatar] Offline
#2
Re: GraphicsConfiguration
[Originally posted by author]

Earlier versions of Java 3D did not complain when a null graphics config was
used (which is what the 3D UI software does) when creating a new Canvas3D.
They just silently used the default one. Later versions started complaining
when the constructor argument was left null. Good practice would be to use
the preferred config for your system rather than using the default. Below is
the code used by the SimpleUniverse class in the Sun utilities for obtaining
the preferred configuration.

--jon


/**
* Finds the preferred <code>GraphicsConfiguration</code> object
* for the system. This object can then be used to create the
* Canvas3D objet for this system.
*
* @return The best <code>GraphicsConfiguration</code> object for
* the system.
*/
public static GraphicsConfiguration getPreferredConfiguration() {
GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
String stereo;

// Check if the user has set the Java 3D stereo option.
// Getting the system properties causes appletviewer to fail with a
// security exception without a try/catch.

stereo = (String) java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
return System.getProperty("j3d.stereo");
}
});

// update template based on properties.
if (stereo != null) {
if (stereo.equals("REQUIRED"))
template.setStereo(template.REQUIRED);
else if (stereo.equals("PREFERRED"))
template.setStereo(template.PREFERRED);
}

// Return the GraphicsConfiguration that best fits our needs.
return GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice().getBestConfiguration(template);
}