import java.awt.*;
import java.util.*;
import java.awt.event.*;
import java.awt.image.*;


public  class RemoveBackWBlur extends Frame {

	static int kWidth ;  //The overall size of your video
	static int kHeight ;
	static long elapsedTime;
	static long now;


	static PixelSource ps;
	static ImageWrangler iw;
	static  RemoveBackWBlur  myWindow;


	static int backgroundThreshold = 50;

	static BufferedImage myImage;

    static boolean scanning = true;

	RemoveBackWBlur() {  //this is like startmovie
		kWidth =320;
		kHeight =240;
	}

	 public static void main(String args[])   //this is like exit frame
     {
        myWindow = new RemoveBackWBlur();
       	myWindow.setSize(kWidth,kHeight);
		myWindow.show();
		myWindow.toFront();
		myWindow.setLayout (null);
		//This is the object that give you the video pixels, the last parameter is for dialog box
		ps = new PixelSource(kWidth,kHeight);
	 	ps.videoSettings();//pop up the settings window
		iw = new ImageWrangler(ps.vidWidth,kHeight,ps.getMasks());

		//add a listener for shutting the window, give it a method to call (thisWindowClosing)
		myWindow.addWindowListener(new java.awt.event.WindowAdapter() {
				public void windowClosing(java.awt.event.WindowEvent e) {
					myWindow.thisWindowClosing(e);
				}
			});


		//add a listener for pressing a key , give it a method to call (KeyPressed)
		myWindow.addKeyListener(new java.awt.event.KeyAdapter() {
				public void keyPressed(java.awt.event.KeyEvent e) {
					myWindow.KeyPressed(e);
				}
			});


		ps.grabBackground();
		//blur the background
		int[] background = ps.getPackedBackground();
		iw.blurArray(background);
		ps.unpackBackground();
		/////////In every frame (like exit frame)///////
		while (scanning)  //you may want to farm this out to a thread
			{
			 LookAtAFrame();   //we look through all the pixels
			 myWindow.repaint();    // we paint the winner
			}
	}



	static void LookAtAFrame()   //this is where the action is, where we go pixel by pixel through the video
     {

  		int[] rgb;
  		int[] brgb;

	 	ps.grabFrame();  //grab a frame

	   	int[] blurredPixels = new int[ps.vidWidth*kHeight];
	   	ps.getPixelArray(blurredPixels);  //get an independent array full of pixels.
		int [] straightPixels = ps.getPixelArray();
		//COMMENT OUT THIS NEXT LINE AND WATCH THE SPEED TRIPLE;
		iw.blurArray(blurredPixels);

		///REMEMBER TO PRESS "B" WITH NOTHING IN THE FOREGROUND TO REMEMBER BACKGROUND

		for (int row = 0; row < kHeight; row++)  //REPEAT FOR EACH ROW OF PIXELS
			{
					for (int column = 0; column < kWidth; column++)  //REPEAT FOR EACH PIXEL IN THE ROW
					{
						//pull the rgb out of the blurredPixels
						rgb = ps.getPixel(blurredPixels,column,row);
						brgb =  ps.getBackGroundPixel(column,row);

						//if any of the colors are different by more than 50
						//adjust the straight array no the blurred on

						if ((Math.abs(brgb[0]-rgb[0])> backgroundThreshold)||(Math.abs(brgb[1]-rgb[1])> backgroundThreshold) || (Math.abs(brgb[2]-rgb[2])> backgroundThreshold))
						{
							ps.setPixel( straightPixels, column, row,255);  //change the alpha
						}else{
							ps.setPixel( straightPixels ,column, row,255,0,0,255);
						}
										//	}
					}//END FOR EACH PIXEL IN A ROW
			}//END FOR EACH ROW OF PIXELS

			try {Thread.sleep(1);}   catch(InterruptedException e) {}

			myImage = iw.imageFromArray(straightPixels );
			elapsedTime = System.currentTimeMillis()-now;
			now = System.currentTimeMillis();
	}	 // end of lookat frame

	public void update(Graphics g){  //smoother picture
		paint(g);
	}

	public void paint(Graphics g) {    //this is where we paint
		if (myImage != null){
			g.drawImage(myImage,0,0,this);//the background video
		}
       }

	public boolean KeyPressed(java.awt.event.KeyEvent e){ //pop up dialog
		//System.out.println (  "whichkey" + e.getKeyText(e.getKeyCode()));
		String whichKey =e.getKeyText(e.getKeyCode());
		if (whichKey.equals("S")) {
			ps.videoSettings();
		}else if (whichKey.equals("B")) {
			ps.grabBackground();
					//blur the background
			int[] background = ps.getPackedBackground();
			iw.blurArray(background);
			ps.unpackBackground();
		}else if (whichKey.equals("T")) {
			System.out.println ("Time: " + elapsedTime + " ms per frame including painting");
		}
		return(true);
	}

    void thisWindowClosing(java.awt.event.WindowEvent e) {
   		scanning = false;
   		System.out.println ("quit");
		dispose();
		ps.killSession();
		System.exit(5);


	}
}