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


public class report10b extends Applet {
    int a = 4;
    double rad;
    Choice ch3;
    Choice ch2;
    Choice ch1;
    Choice ch4;
    int c = 6;
    int colnm = 0;
    Color col [] = {Color.green, Color.red, Color.yellow, Color.cyan,Color.white};
    double scale = 0.8;

    
    public void init() {                //intiの設定
        setBackground(Color.black);             //背景色は黒で
        Font fn = new Font("Helvetica",Font.ITALIC,24);     //フォントの大きさは24イタリック
        
        /*  挿画図形の対象回転数  */
        ch4 = new Choice();		// 挿画図形のサイズのチョイス
	ch4.addItem("6");
	ch4.addItem("8");			
	ch4.addItem("10");
	ch4.addItem("12");			
	ch4.addItem("14");
	ch4.addItem("16");			
	ch4.addItem("18");
        ch4.addItem("20");
	add(ch4);				   
        ch4.setBounds(10,30,100,25);
        ch4.setFont(fn);
        ch4.addItemListener(new ItemAdapter());	//     
        
        
        
        /*  挿画色  */        
        ch2 = new Choice();		// 挿画色のチョイス
	String colorStr [] = {"green", "red", "yellow", "cyan", "white"};
	for (int i = 0; i <= 4; i++) {
	    ch2.addItem(colorStr[i]);
	}        
	add(ch2);				// 挿画色表示   
        ch2.setBounds(150,30,100,25);
        ch2.setFont(fn);
        ch2.addItemListener(new ItemAdapter());	
        
        
        /*  挿画図形の対象回転数  */
        ch3 = new Choice();		// 挿画図形のサイズのチョイス
	ch3.addItem("4");
	ch3.addItem("5");			
	ch3.addItem("6");
	ch3.addItem("7");			
	ch3.addItem("8");
	ch3.addItem("9");			
	ch3.addItem("10");
	add(ch3);				   
        ch3.setBounds(260,30,100,25);
        ch3.setFont(fn);
        ch3.addItemListener(new ItemAdapter());	// 
        
        /*  縮小率 */
        ch1 = new Choice();		
	ch1.addItem("0.8");			
	ch1.addItem("0.7");	
	ch1.addItem("0.6");			
	ch1.addItem("0.5");
	add(ch1);				   
        ch1.setBounds(260,30,100,25);
        ch1.setFont(fn);
        ch1.addItemListener(new ItemAdapter());	


    }
    
    class ItemAdapter implements ItemListener {	
	public void itemStateChanged(ItemEvent e) {
	    if (e.getSource() == ch3) {
                String size = ch3.getSelectedItem();
                a = (new Integer(size)).intValue();
		repaint();			
            }else if (e.getSource() == ch2) {
                colnm = ch2.getSelectedIndex();
                repaint();
            }else if (e.getSource() == ch1) {
                String scaleStr = ch1.getSelectedItem();
                scale = (new Double(scaleStr)).doubleValue();
                repaint();
            }else if (e.getSource() == ch4) {
                String count = ch4.getSelectedItem();
                c = (new Integer(count)).intValue();
		repaint();	
            }
	}
    }
	
    



     public void drawFra(Graphics g){
        double xpos1 = 250,ypos1 = 300,r1 = 80;
        double xpos2,ypos2,r2;
	g.setColor(col[colnm]);	
        g.drawOval((int)(xpos1 - r1), (int)(ypos1 - r1), (int)(2 * r1), (int)(2 * r1));   //真中の基準円
        
        
        /*  xpos1,ypos1,r1は前の円の位置    */
        /*  xpos2,ypos,r2は次の円の位置*/
        
        for(int j = c;j > 0;--j){
        rad = 0.0;
        r2 = r1 * scale;
            for (int rot = a;rot > 0;--rot){				        // 同じ大きさの円を対象回転数だけ挿画     
            xpos2 = (r1 + r2) * Math.cos(rad) + xpos1;	
            ypos2 = (r1 + r2) * Math.sin(rad) + ypos1;	
            g.setColor(col[colnm]);	
            g.drawOval((int)(xpos2 - r2), (int)(ypos2 - r2), (int)(2 * r2), (int)(r2 * 2)); 
            rad = rad + (2 * Math.PI / a); 
            }
        r1 = r1 * scale;
        }

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