vectors

color bg = #542437;
int s =255;
float n = 3;

void setup() {
  size(600, 800);
  background(bg);
  noFill();

  PVector left = new PVector(2, -1);

  for (int y = 0; y < height*1.5; y+=5) {
    left.normalize();
    float r = map(noise(y/n), 0, 1, 200, 400);
    left.setMag(r);

    strokeWeight(1);
    stroke(255);
    line(0, y, left.x, y+left.y);
    ellipse(left.x, y+left.y, 10, 10);

  }
}