let offset=0;

​

function setup() {

  createCanvas(400, 400);

  strokeWeight(25) 

  //background(255,50)

}

​

function draw() {

  background(255)

//background(255,50)// 给背景增加透明度可以增加fading out的效果

//   x=random(0,width)

// y=random(0,height)

  x=noise(offset)*width// noise range 0-1, noise doesnt has a limit number,noise is fixed, only appear once upon refreshing

  y=200

  offset=offset+0.01// smaller the offset is, the more gradual gonna be;

​

point(x,y)

}

​