draw3dovalapplet.java

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// Fig. 2.8_03: Draw3DOvalApplet.java
// 绘制3D椭圆或正圆

// 引入相关的包
import java.awt.*; // 引入 java.awt包中所有的类
import javax.swing.*; // 引入 javax.swing包中所有的类

public class Draw3DOvalApplet extends JApplet
{
    // 在applet上绘制3D椭圆或正圆
    public void paint(Graphics g)
    {
        // 调用父类的 paint 方法
        super.paint(g);

        //设置字体
        g.setFont(new Font("汉真广标", Font.PLAIN, 35));
        g.drawString("3D椭圆或正圆画法", 10, 40);

        int thickness = 20; //设置椭圆或正圆的厚度

        for (int i = thickness - 1; i >= 0; i--)
        {
            g.setColor(new Color(255, i * 10, i));
		    g.fillOval(10 + i, 80 - i, 150, 120);
            g.fillOval(210 + i, 60 + i, 150, 120);
            g.fillOval(30 - i, 230 - i, 150, 120);
            g.fillOval(230 - i, 210 + i, 150, 120);
        }

    } // paint 方法结束

} // Draw3DOvalApplet 类结束

/**************************************************************************
 * (C) Copyright 2004-2005 by Jingkui Zhong(钟京馗) and Huan Tang(唐桓).  *
 * All Rights Reserved.                                                   *
 *                                                                        *
 * DISCLAIMER: The authors of this code have used their                   *
 * best efforts in preparing the code. These efforts include the          *
 * development, research, and testing of the theories and programs        *
 * to determine their effectiveness. The authors and publisher make       *
 * no warranty of any kind, expressed or implied, with regard to these    *
 * programs or to the documentation contained in these codes. The authors *
 * shall not be liable in any event for incidental or consequential       *
 * damages in connection with, or arising out of, the furnishing,         *
 * performance, or use of these programs.                                 *
 **************************************************************************/