Java3D的环境配置

下面以Windows系统为例：
安装步骤：
1.下载Java JDK，并安装它。目前的最新版是1_5_0_07，文件名为jdk-1_5_0_07-windows-i586-p.exe，文件大小约为34MB，从http://192.18.108.138/ECom/EComTicketServlet/BEGINCC371BB88AD6EB024CA824E5078E9C56/-2147483648/1612698399/1/732086/731822/1612698399/2ts+/westCoastFSEND/jdk-1.5.0_07-oth-JPR/jdk-1.5.0_07-oth-JPR:2/jdk-1_5_0_07-windows-i586-p.exe下载。

2.设置环境变量。就我的电脑为例：
JDK安装路径是C:\Program Files\Java\jdk1.5.0。
设置环境变量:
JAVA_HOME = C:\Program Files\Java\jdk1.5.0;
PATH = %JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;"C:\Program Files\Microsoft DirectX SDK (August 2006)\Utilities\Bin\x86";C:\Program Files\PC Connectivity Solution\;D:\oracle\ora92\bin;C:\Program Files\Oracle\jre\1.3.1\bin;C:\Program Files\Oracle\jre\1.1.8\bin;C:\Program Files\Borland\Delphi7\Bin;C:\Program Files\Borland\Delphi7\Projects\Bpl\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\ATI Technologies\ATI.ACE\;C:\Program Files\IDM Computer Solutions\UltraEdit-32;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\Program Files\Python22;C:\Program Files\MySQL\MySQL Server 5.0\bin;E:\3dsmax5\backburner2\;C:\Program Files\Common Files\Autodesk Shared\
CLASSPATH = .;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar

3.下载Java3D，目前的最新版是1.4.0_01 ，文件名为java3d-1_4_0_01-windows-i586.exe，大小约为 2.77 MB，从 http://192.18.108.149/ECom/EComTicketServlet/BEGIN380C9A6CAFAA00614B92D56EB6694EAA/-2147483648/1612707939/1/735290/735278/1612707939/2ts+/westCoastFSEND/java3d-1.4.0_01-oth-JPR/java3d-1.4.0_01-oth-JPR:5/java3d-1_4_0_01-windows-i586.exe下载。
默认安装就行了。

4.测试Java3D.
我们就用记事本写一个Java3D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(250, 250));
        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
   
}
然后把它把保存为HelloUniverse.java，然后用javac HelloUniverse.java编译，最后用java HelloUniverse运行就会出现一个旋转的立方体。

希望大家以后多多交流。