Java Applet使用

问题描述：

Java Applet使用

参考资料：

http://docs.oracle.com/javase/tutorial/deployment/applet/deployingApplet.html

问题解决：

Java 代码 extends JApplet

LocCube.java文件：

package emos.position.view;

import java.awt.BorderLayout;

import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import com.sun.j3d.utils.behaviors.mouse.MouseWheelZoom;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.swing.JApplet;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.vecmath.*;

public class LocCube extends JApplet {

    private static final long serialVersionUID = 1L;
    private Color color = new Color();
    private JPanel panel = new JPanel();

    /**
     * Java3D 使用
     * @return
     */
    private BranchGroup createSceneGraph() {
        BranchGroup objRoot = new BranchGroup();

        BoundingSphere bounds = new BoundingSphere(new Point3d(0d, 0d, 0d),
                100d);

        Background bg = new Background(color.diffuse);
        bg.setApplicationBounds(bounds);
        objRoot.addChild(bg);

        Transform3D ts = new Transform3D();

        ts.rotX(-(double) Math.PI / 8); // 旋转X轴
        Vector3f vector = new Vector3f(-5f, -5, -25f); // 指定点平移
        ts.setTranslation(vector);

        TransformGroup tg = new TransformGroup(ts);
        tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

        /**
         * 鼠标旋转
         */
        MouseRotate mrot = new MouseRotate(tg);
        mrot.setSchedulingBounds(new BoundingSphere());
        tg.addChild(mrot);

        /**
         * 鼠标滚轮放大
         */
        MouseWheelZoom zoom = new MouseWheelZoom();
        zoom.setTransformGroup(tg);
        zoom.setSchedulingBounds(new BoundingSphere());
        tg.addChild(zoom);

        /**
         * 鼠标右键平移
         */
        MouseTranslate translate = new MouseTranslate();
        translate.setTransformGroup(tg);
        translate.setSchedulingBounds(new BoundingSphere());
        tg.addChild(translate);

        Shape3D linecube = new LineCube();
        Shape3D linecross = new LineCross();
        tg.addChild(linecube);
        tg.addChild(linecross);

        objRoot.addChild(tg);
        objRoot.compile();
        return objRoot;
    }

    public LocCube() {
        panel.setLayout(new BorderLayout());
        // setLayout(new BorderLayout());
        Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
        panel.add("Center", c);
        BranchGroup scene = createSceneGraph();
        SimpleUniverse u = new SimpleUniverse(c);
        u.getViewingPlatform().setNominalViewingTransform();
        u.addBranchGraph(scene);
        u.getViewer().getView().setMinimumFrameCycleTime(5);
    }

    public JPanel getPanel() {
        return panel;
    }

    public void init() {
        new LocCube();
        add(getPanel());
    }

    /*
     * public static void main(String[] args) { JFrame frame = new JFrame();
     * LocCube panel = new LocCube(); frame.add(panel.getPanel());
     * frame.setSize(200, 200); frame.setVisible(true); }
     */
}

JSP文件包含applet程序：

applet.jsp文件：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
    <p align="center">
        <applet code="emos.position.view.LocCube" archive="emos.jar" width="700"
            height="500"> </applet>
    </p>
    <p align="center">java applet</p>
</body>
</html>