Java Applet使用

2023-07-18 12:48:58

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>