let m = 0.0;

function setup() {

  createCanvas(400, 400);

  stroke(64, 64, 64, 50);

}

​

function draw() {

  background(220);

  translate(width * -0.5, 0)

  for (let y=0; y<=height; y+=50){

    fill(map(y, 0, height, 127, 255));

    translate(map(mouseX, 0, width, width * -0.05, width * 0.05), 0);

    beginShape();

    curveVertex(0, height);

    for (let x=0; x<=width*2; x+=50){

      curveVertex(x, y + noise(y + (x / 100)) * (height - y));

    }

    curveVertex(width*2, height);

    curveVertex(width*2, height);

​

    curveVertex(0, height);

    endShape(CLOSE);

  }

  n += 0.005;

}