sound3d.java

java程序中关于多媒体编程 既有文件说明 更有例子 希望大家可以一起学习交流

package sound3d;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.URL;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import java.io.File;
import java.security.*;
import javax.media.j3d.*;
import javax.vecmath.*;

public class Sound3D extends Applet {
  boolean isStandalone = false;

    private static  int filenamesGiven = 0;
    private static URL[] url = new URL[3];
    private static String[] filename = new String[3];
    private static String path = null;
    private static boolean filenamesSet = false;

    private SimpleUniverse u = null;

    public BranchGroup createSceneGraph() {
	BranchGroup objRoot = new BranchGroup();

	TransformGroup objTrans = new TransformGroup();
	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
	objRoot.addChild(objTrans);

	objTrans.addChild(new ColorCube(0.4));

	Transform3D yAxis = new Transform3D();
        Alpha rotation = new Alpha(-1, Alpha.INCREASING_ENABLE,
                                   0, 0,
                                   20000, 0, 0,
                                   0, 0, 0);
        RotationInterpolator rotator =
            new RotationInterpolator(rotation,
                                     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);
	objTrans.addChild(rotator);

        BackgroundSound sound1 = new BackgroundSound();
        PointSound sound2 = new PointSound();
        PointSound sound3 = new PointSound();
        sound1.setCapability(PointSound.ALLOW_ENABLE_WRITE);
        sound1.setCapability(PointSound.ALLOW_INITIAL_GAIN_WRITE);
        sound1.setCapability(PointSound.ALLOW_SOUND_DATA_WRITE);
        sound1.setCapability(PointSound.ALLOW_SCHEDULING_BOUNDS_WRITE);
        sound1.setCapability(PointSound.ALLOW_CONT_PLAY_WRITE);
        sound1.setCapability(PointSound.ALLOW_RELEASE_WRITE);
        sound1.setCapability(PointSound.ALLOW_DURATION_READ);
        sound1.setCapability(PointSound.ALLOW_IS_PLAYING_READ);
        sound1.setCapability(PointSound.ALLOW_LOOP_WRITE);
        sound2.setCapability(PointSound.ALLOW_ENABLE_WRITE);
        sound2.setCapability(PointSound.ALLOW_INITIAL_GAIN_WRITE);
        sound2.setCapability(PointSound.ALLOW_SOUND_DATA_WRITE);
        sound2.setCapability(PointSound.ALLOW_SCHEDULING_BOUNDS_WRITE);
        sound2.setCapability(PointSound.ALLOW_CONT_PLAY_WRITE);
        sound2.setCapability(PointSound.ALLOW_RELEASE_WRITE);
        sound2.setCapability(PointSound.ALLOW_DURATION_READ);
        sound2.setCapability(PointSound.ALLOW_IS_PLAYING_READ);
        sound2.setCapability(PointSound.ALLOW_POSITION_WRITE);
        sound2.setCapability(PointSound.ALLOW_LOOP_WRITE);
        sound3.setCapability(PointSound.ALLOW_ENABLE_WRITE);
        sound3.setCapability(PointSound.ALLOW_INITIAL_GAIN_WRITE);
        sound3.setCapability(PointSound.ALLOW_SOUND_DATA_WRITE);
        sound3.setCapability(PointSound.ALLOW_SCHEDULING_BOUNDS_WRITE);
        sound3.setCapability(PointSound.ALLOW_CONT_PLAY_WRITE);
        sound3.setCapability(PointSound.ALLOW_RELEASE_WRITE);
        sound3.setCapability(PointSound.ALLOW_DURATION_READ);
        sound3.setCapability(PointSound.ALLOW_IS_PLAYING_READ);
        sound3.setCapability(PointSound.ALLOW_POSITION_WRITE);

	BoundingSphere soundBounds =
	    new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
        sound1.setSchedulingBounds(soundBounds);
        sound2.setSchedulingBounds(soundBounds);
        sound3.setSchedulingBounds(soundBounds);
	objTrans.addChild(sound1);
	objTrans.addChild(sound2);
	objTrans.addChild(sound3);

	SimpleSoundsBehavior player = new SimpleSoundsBehavior(
                  sound1, sound2, sound3,
                  url[0], url[1], url[2], soundBounds);
	player.setSchedulingBounds(soundBounds);
	objTrans.addChild(player);

        objRoot.compile();

	return objRoot;
    }

    public Sound3D() {
    }

    public void init() {
        if (!filenamesSet) {
	    if (path == null) {
	        path = getCodeBase().toString();
            }
            int j;
            for (j=0; j<filenamesGiven; j++)
	        filename[j] = new String(path + "/" + filename[j]);
            for (int i=j; i<3; i++) {
                if (i == 0)
		    filename[0] = new String(path + "/techno_machine.au");
                if (i == 1)
		    filename[1] = new String(path + "/hello_universe.au");
                if (i == 2)
		    filename[2] = new String(path + "/roar.au");
            }
            filenamesSet = true;
        }

	setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();

        Canvas3D c = new Canvas3D(config);
	add("Center", c);

        for (int i=0; i<3; i++) {
            try {
                url[i] = new URL(filename[i]);
            }
            catch (Exception e) {
	        System.out.println(e.getMessage());
                return;
            }
        }

	u = new SimpleUniverse(c);
        AudioDevice audioDev = u.getViewer().createAudioDevice();
	BranchGroup scene = createSceneGraph();

        u.getViewingPlatform().setNominalViewingTransform();

	u.addBranchGraph(scene);
    }

    public void destroy() {
	u.cleanup();
    }


  //Main method
  public static void main(String[] args) {
    Sound3D applet = new Sound3D();
    applet.isStandalone = true;
        if (args.length > 0) {
            if ( (args[0].startsWith("file"+File.pathSeparator)) ||
                 (args[0].startsWith("http"+File.pathSeparator))   ) {
                path = args[0];
            }
            else {
	        path = "file:" + args[0];
            }
	}
	else {
	    path = "file:.";
	}

        for (int i=0; i<3; i++) {
            if (args.length > (i+1)) {
                filename[i] = args[i+1];
                if (filename[i] != null) {
                    filenamesGiven++ ;
                }
            }
            else
                break;
        }
    Frame frame;
    frame = new Frame() {
      protected void processWindowEvent(WindowEvent e) {
        super.processWindowEvent(e);
        if (e.getID() == WindowEvent.WINDOW_CLOSING) {
          System.exit(0);
        }
      }
      public synchronized void setTitle(String title) {
        super.setTitle(title);
        enableEvents(AWTEvent.WINDOW_EVENT_MASK);
      }
    };
    frame.setTitle("Sound3D Frame");
    frame.add(applet, BorderLayout.CENTER);
    applet.init();
    applet.start();
    frame.setSize(400,320);
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
    frame.setVisible(true);
  }
}