wall

function setup() {
  createCanvas(400, 400,WEBGL);
}

function draw() {
  background(220);
  ambientLight(60, 60, 60);
  orbitControl()
  fill(100,200,255)
  pointLight(255, 255, 255, 200, 200, 300);
  translate(-width/2-40,-width/2-40,20)
  for(let j=0;j<width/20+10;j++){
    for (let i=0;i<width/20+10;i++){
      push()
      translate(i*20,j*20,i*10*abs(sin(frameCount/100)))
      sphere(25 -20*sin(frameCount/50),25,24)
      pop()
      push()
      translate(width-i*20,j*20,i*10*abs(cos(frameCount/100)));
      sphere(25 -20*cos(frameCount/50),25,24)
      pop()
    }
  }
  
}