Java编程——3D文字

 

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package newpackage;

import java.applet.Applet;
import java.awt.*;

public class Text3DApplet extends Applet implements Runnable {

    Image image; //绘制文字的Image对象
    Graphics graphics; //绘制文字的Graphics对象
    Thread thread;  //显示三维文字线程
    int width,height; //显示宽度、高度
    String message; //显示信息
    int fontSize; //文字尺寸
    Font font; //字体

    public void init() {
        Dimension dim=getSize(); //得到Applet的尺寸
        width = dim.width; //得到宽度
        height = dim.height; //得到高度
        image = createImage(width, height); //得到Image实例
        graphics= image.getGraphics(); //得到Grahpics实例
        message = getParameter("text"); //从HTML文件中得到显示信息
        if (message == null) { //如果信息为空
            message="三维文字"; //设置默认信息
        }
        fontSize = 30; //设置字体大小
    }
    

    public void start() { 
        if (thread == null) {
            thread = new Thread(this);  //实例化线程
            thread.start(); //运行线程
        }
    }

    public void run() { //线程运行主体
        while (thread != null) {                
                try {
                    Thread.sleep(50L); //线程休眠
                } catch (InterruptedException ex) {
                }
                repaint(); //重绘屏幕
            }
    }

    public void update(Graphics g) {        
        font = new Font("TimesRoman", 1, fontSize); //得到字体实例
        graphics.setFont(font);  //设置显示字体
        int j = (int) (255 * Math.random()); //变量,用于生成渐变颜色
        int k = (int) (255 * Math.random());
        int l = (int) (255 * Math.random());
        try {
            Thread.sleep(2000); //线程休眠
        } catch (InterruptedException ex) {
        }
        graphics.setColor(Color.orange); //设置当前颜色
        graphics.fillRect(0, 0, width, height); //填充背景
        for (int i = 0; i < 6; i++) { //三维深度
            graphics.setColor( //设置渐变颜色
                new Color(
                    255 - ((255 - j) * i) / 10,
                    255 - ((255 - k) * i) / 10,
                    255 - ((255 - l) * i) / 10));
            graphics.drawString(message, 15 - i, height - 15-i); //绘制字符串
        }
        g.drawImage(image, 0, 0, this); //绘制Image到屏幕
    }

    public void paint(Graphics g) {
        update(g);
    }
}