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);
    }
}