// Declare and contruct two objects (h1, h2) from the class HLine 
HLine h1 = new HLine(200, 5.0); 
HLine h2 = new HLine(500, 10.5); 
 
void setup() 
{
  size(450, 450);
  frameRate(15);
  smooth();
}

void draw() { 
  background(0);
  stroke(255);
  h1.update(); 
  h2.update();  
} 
 
class HLine { 
  float ypos, speed; 
  float r = random(40);
  HLine (float y, float s) {  
    ypos = y; 
    speed = s; 
  } 
  void update() { 
    ypos += speed; 
    if (ypos > height) { 
      ypos = 0; 
    } 
    line(0, ypos, width*50, ypos*30); 
    line(0, ypos, width*5, ypos*10);   
    fill(255, 100);
    rect(ypos*5, ypos, width/r, ypos);  
} 
}