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Java 3D Graphics: JVM hangs in Canvas3D constructor

Posted on 2003-11-17
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Last Modified: 2010-03-31
Hi,

I am trying to create a simple graphics configuration and pass it to the Canvas#D constructor but the jvm hangs forever in the constructor and never reaches the next statement.

I have tried all the following ways without any luck.  I am a beginner in 3D java graphics, any help would be very much appreciated.

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Tried the following 3 ways without luck:

/* first try*/
GraphicsConfigTemplate3D template3d = new GraphicsConfigTemplate3D();
    GraphicsConfiguration[] arrConfig = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getConfigurations();
    GraphicsConfiguration config = template3d.getBestConfiguration(arrConfig);
Canvas3D canvas3D = new Canvas3D(config); //hangs here forever

/* second try */
GraphicsConfiguration config =                        SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(config); //hangs here forever

/* Third try */
GraphicsConfigTemplate3D template3d = new GraphicsConfigTemplate3D();
GraphicsConfiguration config = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getBestConfiguration(template3d);
Canvas3D canvas3D = new Canvas3D(config); //hangs here forever

/* Fourth try */
Canvas3D canvas3D = new Canvas3D(null);// this doesn't work since I am using a newer version that doesn't allow passing null for GraphicsConfiguration.  Hence I get an error message.

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Question by:mschumacher74
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3 Comments
 
LVL 35

Accepted Solution

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TimYates earned 50 total points
ID: 9771417
According to: http://www.j3d.org/tutorials/raw_j3d/chapter1/world_window.html

you should do:

GraphicsConfigTemplate3D tmpl = new GraphicsConfigTemplate3D();
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice device = env.getDefaultScreenDevice();
GraphicsConfiguration config = device.getBestConfiguration( tmpl );
canvas = new Canvas3D( config );

which seems to be your "Third try"

----------

A lot of other examples seem to use:

    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    Canvas3D c = new Canvas3D(config);

using the SimpleUniverse (from com.sun.j3d.utils.universe.* I think)

Tim
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