Java 动态太极图 DynamicTaiChi (整理)

 package demo;

 import java.awt.Color;
 import java.awt.Graphics;

 import javax.swing.JFrame;
 import javax.swing.JPanel;

 /**
  *                   Java 动态太极图 DynamicTaiChi (整理)
  *
  *                                          2016-1-2 深圳 南山平山村 曾剑锋
  */

 public class DynamicTaiChi extends JPanel{
     private static final long serialVersionUID = 1L;
     /*
      *           所有的数据都是按比例依照centerX进行改变的,所以
      * 如果想要更改面板大小的话,可以直接改centerX的值.
      */
     static int centerX = 600/2;
     static int centerY = centerX;
     static int cicle = centerX;
     static int angle = 0;

     public DynamicTaiChi() {
         start();
     }
     private void start() {
         new Thread(new Runnable() {

             @Override
             public void run() {
                 while (true) {
                     try {
                         angle++;
                         Thread.sleep(10);
                         repaint();
                     } catch (Exception e) {
                         e.printStackTrace();
                     }
                 }

             }
         }).start();
     }
     @Override
     public void paint(Graphics graphics) {
         super.paint(graphics);
         this.setBackground(Color.red);
         graphics.setColor(Color.white);
         graphics.fillArc(centerX-cicle/2, centerY-cicle/2, cicle, cicle, angle, 180);
         graphics.setColor(Color.black);
         graphics.fillArc(centerX-cicle/2, centerY-cicle/2, cicle, cicle, 180+angle, 180);
         graphics.fillArc(centerX+(int)(cicle/2/2*(Math.cos(angle*Math.PI/180)))-cicle/2/2, centerY-(int)(cicle/2/2*(Math.sin(angle*Math.PI/180)))-cicle/2/2, cicle/2, cicle/2, 0, 360);
         graphics.setColor(Color.white);
         graphics.fillArc(centerX+(int)(cicle/2/2*(Math.cos((angle+180)*Math.PI/180)))-cicle/2/2, centerY-(int)(cicle/2/2*(Math.sin((angle+180)*Math.PI/180)))-cicle/2/2, cicle/2, cicle/2, 0, 360);
         graphics.setColor(Color.black);
         graphics.fillArc(centerX+(int)(cicle/2/2*(Math.cos((angle+180)*Math.PI/180)))-cicle/2/2/2, centerY-(int)(cicle/2/2*(Math.sin((angle+180)*Math.PI/180)))-cicle/2/2/2, cicle/2/2, cicle/2/2, 0, 360);
         graphics.setColor(Color.white);
         graphics.fillArc(centerX+(int)(cicle/2/2*(Math.cos(angle*Math.PI/180)))-cicle/2/2/2, centerY-(int)(cicle/2/2*(Math.sin(angle*Math.PI/180)))-cicle/2/2/2, cicle/2/2, cicle/2/2, 0, 360);
     }

     public static void main(String[] args) {
         JFrame jFrame = new JFrame();
         jFrame.setTitle("DynamicTaiChi");
         jFrame.setSize(centerX*2, centerY*2);
         jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         jFrame.setLocationRelativeTo(null);

         DynamicTaiChi jPanel = new DynamicTaiChi();
         jFrame.add(jPanel);

         jFrame.setVisible(true);
     }
 }