int gy=int(random(height/2-25,height/2+25));
void setup (){
  size (600,600);
  background(255);
  smooth();
  //  frameRate(30);
  //  noLoop();
}

void draw (){
  fill(255,20);
  noStroke();
  rect(0,0,width,height);

  for (int x=0; x<width; x=x+int(random(5))) {
    int y= gy;
    stroke(random(255),random(10),random(255),random(20));
    fill(random(200,255),random(10),random(255),random(70));
    rect(x, y, random(5),random(200));
    
  }
}


void mouseDragged() {
    gy=int(random(mouseY-25, mouseY));
    }

void keyPressed(){
 // save frame
  if(keyPressed) {
    if (key == 's' || key == 'S') {
      saveFrame("image-####.png");
    }
  }
}