package jp.eclipse;

import java.lang.Math;

import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;

public class MainActivity extends Activity implements Runnable{
	final static int DELAY=1;
    GumowskiView gV;
	Handler hn;
	double mu, a,b,dm;
	Paint p=new Paint();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		LinearLayout LL=new LinearLayout(this);		
		setContentView(LL);
		gV=new GumowskiView(this); LL.addView(gV);
		p.setColor(Color.BLUE);
		p.setStyle(Paint.Style.FILL);
		hn =new Handler(); hn.postDelayed(this,DELAY);	}

	@Override
	public void run() {
		// TODO 自動生成されたメソッド・スタブ
		mu +=dm;
		if(mu>(1-dm)) onDestroy();
		else{
		  gV.invalidate();
		  hn.postDelayed(this, DELAY);
		}
	}
	public void onDestroy(){
	  super.onDestroy();
	  hn.removeCallbacks(this);
	}
	class GumowskiView extends View{
	   public GumowskiView(Context cn){
		   super(cn);
		   a= 0.008F; 
		   b=0.05F;
		   dm=0.001F;
		   mu=-1+dm;
	   }
	   protected void onDraw(Canvas cs){
		   super.onDraw(cs);
		   double X,Y,XN,G; float XP,YP, mX;
		   mX=(float) (Math.floor(mu*1000+0.5)/1000);
		   cs.drawText(" GumowskiとMiraの写像 μ="+ mX, 10, 10, p);
		   X=0.1F; Y=0;
		   G=mu*X+2*(1-mu)*X*X/(1+X*X);
		   for(int i=0;i<10000;i++){
			   XP=(float)(250-X*5); YP=(float)(200-Y*5);
			   cs.drawRect(XP, YP,XP+1,YP+1,p);
			   XN=X; X=Y+a*(1-b*Y*Y)*Y+G;
			   G=mu*X+2*(1-mu)*X*X/(1+X*X);
			   Y=-XN+G;
			 }
	   
	   }
	}
	

}