cone3d.java

Java 多媒体技术(附源码) Java 3D API JavaSound API 各种格式的多媒体数据文件 JBuilder开发环境

package cone3d;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.awt.BorderLayout;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;

/**
 * <p>Title: 红色圆锥体</p>
 * <p>Description: 应用Java 3D API生成一个三维红色圆锥体</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: 北京师范大学计算机系</p>
 * @author 王大伟
 * @version 1.0
 */

public class Cone3D extends Applet{
  boolean isStandalone = false;
 public BranchGroup createSceneGraph(){//生成三维场景图的方法
  BranchGroup objRoot = new BranchGroup();
  TransformGroup objTrans = new TransformGroup();
  objRoot.addChild(objTrans);
  BoundingSphere bounds = new BoundingSphere(
new Point3d(0.0,0.0,0.0),100.0);
  Color3f bgColor = new Color3f(1.0f,1.0f,1.0f);
  Background bg = new Background(bgColor);
   bg.setApplicationBounds(bounds);
  objRoot.addChild(bg);
  Color3f directionalColor = new Color3f(1.0f,1.0f,1.0f);
  Vector3f vec = new Vector3f(0.0f,0.0f,-1.0f);
  DirectionalLight directionalLight =
 new DirectionalLight(directionalColor,vec);
  directionalLight.setInfluencingBounds(bounds);
  objRoot.addChild(directionalLight);
  Appearance app = new Appearance();
  Material material = new Material();
   material.setEmissiveColor(new Color3f(1.0f,0.0f,0.0f));
  app.setMaterial(material);
  Cone cone = new Cone(0.5f,1.0f,1,app);
  objTrans.addChild(cone);
  objRoot.compile();
  return objRoot;
 }
 public Cone3D(){//程序的构造方法
  setLayout(new BorderLayout());
  GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();
  Canvas3D c = new Canvas3D(config);
  add("Center",c);
  BranchGroup scene = createSceneGraph();
  SimpleUniverse u = new SimpleUniverse(c);
  u.getViewingPlatform().setNominalViewingTransform();
  u.addBranchGraph(scene);
 }
  public static void main(String[] args) {
    Cone3D applet = new Cone3D();
    applet.isStandalone = true;
    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("演示生成三维红色圆锥体");
    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);
  }

}