hellouniverse.java

Java3d实例程序

import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.ColorCube;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.GraphicsConfiguration;
/**
* Simple Java 3D example program to display a spinning cube.
*/
public class HelloUniverse extends javax.swing.JFrame {
    private SimpleUniverse univ = null;
    private BranchGroup scene = null;
    public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create the TransformGroup node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at run time. Add it to
// the root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objTrans);
// Create a simple Shape3D node; add it to the scene graph.
objTrans.addChild(new ColorCube(0.4));
// Create a new Behavior object that will perform the
// desired operation on the specified transform and add
// it into the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, 4000);
RotationInterpolator rotator =
     new RotationInterpolator(rotationAlpha, objTrans, yAxis,
         0.0f, (float) Math.PI*2.0f);
BoundingSphere bounds =
     new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
rotator.setSchedulingBounds(bounds);
objRoot.addChild(rotator);
        // Have Java 3D perform optimizations on this scene graph.
        objRoot.compile();
return objRoot;
    }
    private Canvas3D createUniverse() {
// Get the preferred graphics configuration for the default screen
GraphicsConfiguration config =
     SimpleUniverse.getPreferredConfiguration();
// Create a Canvas3D using the preferred configuration
Canvas3D c = new Canvas3D(config);
// Create simple universe with view branch
univ = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
univ.getViewingPlatform().setNominalViewingTransform();
// Ensure at least 5 msec per frame (i.e., < 200Hz)
univ.getViewer().getView().setMinimumFrameCycleTime(5);
return c;
    }
    /**
     * Creates new form HelloUniverse
     */
    public HelloUniverse() {
// Initialize the GUI components
initComponents();
// Create Canvas3D and SimpleUniverse; add canvas to drawing panel
Canvas3D c = createUniverse();
drawingPanel.add(c, java.awt.BorderLayout.CENTER);
// Create the content branch and add it to the universe
scene = createSceneGraph();
univ.addBranchGraph(scene);
    }
    // ----------------------------------------------------------------
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        drawingPanel = new javax.swing.JPanel();
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("HelloUniverse");
        drawingPanel.setLayout(new java.awt.BorderLayout());
        drawingPanel.setPreferredSize(new java.awt.Dimension(1024, 768));
        getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);
        pack();
    }// </editor-fold>//GEN-END:initComponents
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new HelloUniverse().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel drawingPanel;
    // End of variables declaration//GEN-END:variables
    
}