createCanvas(700, 500);

  let centerX;

  let centerY;

  let step = 100;

  let fading = 0;

}

​

function draw() {

  background(0);

  centerX = width / 2;

  centerY = height / 2;

  step = 100;

​

  //moons

  for (let x = 140; x < width - 60; x += step) {

    circle(x, centerY, 70);

​

    //fading

    fading=mouseX/2

    // for (mouseMoved, x<width-60, map(mouseX, width,0, 0, 70)

    //   arc(mouseX, centerY, 140, 70, 0 , 2*PI)

    pos = rotate2d( noise(pos) ) * pos; // rotate the space

    pattern = lines(pos,.5); // draw lines

  }

}

​