int z = 300;
int cols = width;
int rows = height;
int[][] myGrid = new int [cols][rows];

void setup()
{
   size(1280,720);
   for(int i = 0; i < rows; i++)
   {
      for(int j = 0; j < cols; j++)
      {
          myGrid[i][j] = 0;
      }
   }
}

void drawShape()
{
  int x = 0;
  noStroke();
  while (x < 255)
  {
     frameRate(5);
     fill(random(255),random(255),random(255),random(255));
     ellipse(random(1280)*2,random(720)*2, random(50), random(50));
     rect(random(1280)*5, random(720)*5, x, x);
     x++;
  }
}


void draw()
{
  //drawShape();
  for(int i = 0; i < rows; i++)
  {
     for(int j = 0; j < cols; j++)
     {
        myGrid[i][j];
        ellipse(
     }
  }
}