// A Cell object
  
  class Cell {
  
    // A cell object knows about its location in the grid as well as its size with the variables x, y, w, h.
    float x,y;   // x,y location
    float w,h;   // width and height
    float angle; // angle for oscillating brightness
    
    // Cell Constructor
    Cell(float tempX, float tempY, float tempW, float tempH, float tempAngle) {
      x = tempX;
      y = tempY;
      w = tempW;
      h = tempH;
      angle = tempAngle;
    }
    
    // Oscillation means increase angle
    void oscillate() {
      angle += 0.02;
    }
    
    void display() {
      stroke(255);
      // Color calculated using sine wave
      fill(127 + 127*sin(angle));
      rect(x,y,w,h);
    }
  }