import processing.video.*;

//two arrays for x positions and y positions
int MAX = 50;
int[] xpos = new int[MAX];
int[] ypos = new int[MAX];


Capture video;

void setup()
{
  size(500,500);
  framerate(15);
  smooth();
  video = new Capture(this, "IIDC FireWire Video", 100, 100);
 
  //fill everything with 0 at the start
  for (int i = 0; i < xpos.length; i++)
  {
    xpos[i] = 0;
    ypos[i] = 0;
  }
}

void captureEvent(Capture video)

{
video.read();
}

void draw()
{
             float brightest;
             int bx, by;

            
             //initializes brightness
             brightest = brightness(video.pixels[0]);
             bx = by = 0;
               for (int x = 0;  x < video.width; x = x + 2)
                       {
                for (int y = 0; y < video.height; y = y + 2)
                       {

                color c = video.pixels[x + y * video.width];
                if (brightness(c) > brightest)
                {
                  brightest = brightness(c);
                  bx = x*5;
                  by = y*5;
                }
               }
              } 
            
  background(0);           
  //image(video, 0, 0);
  //fill(0);
  //ellipse(bx,by,50,50);
 
  //move all values in the array down one spot (i.e. x[0] = x[1], x[1] = x[2], etc.)
  for (int i = 0; i < xpos.length-1; i++)
  {
    xpos[i] = xpos[i+1];
    ypos[i] = ypos[i+1];
  }
 
  //fill the last spot of the array with the current brightest pixel location
  xpos[xpos.length-1] = bx;
  ypos[xpos.length-1] = by;

  //draw a square  with  variable size and color for every element of each array
  for (int i = 0; i < xpos.length; i++)
  {
    rectMode (CENTER);
    stroke(200);
    if( i % 5 == 0 && i != 0 )
      fill( i*5, 0, i*5 );
    else
      fill(255,i*5);
    //if( i % 10 == 0 && i != 0 )
      //ellipse(xpos[i],ypos[i],(MAX-i)*4,(MAX-i)*2);
    if( i % 3 == 0 && i != 0 )
      rect( xpos[i], ypos[i], (MAX-i)*2, (MAX-i)*2);
    else
      ellipse(xpos[i],ypos[i],(MAX-i)*2,(MAX-i)*2);
     
     /*
     if( i == 49 )
     {
       fill(0,0);
       for( int j = 0; j < xpos.length; j++ )
         ellipse(xpos[j],ypos[j],(MAX-j)*2,(MAX-j)*2);
     }
     */
  }
}