Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <title>10_print</title>
<style id="jsbin-css">
body{
  margin:0;
  padding:0;
}
</style>
</head>
<body>

<script id="jsbin-javascript">
var can=document.createElement("canvas");
document.body.appendChild(can);
var ctx=can.getContext("2d");
with(can){
  width=window.innerWidth;
  height=window.innerHeight;
}

function s(a,b,c,d) {
  with(ctx){
  beginPath();
  moveTo(a,b);
  lineTo(c,d);
  lineWidth=3;
  lineCap="round";
  strokeStyle=`rgb(${Math.floor(Math.random()*255)},${Math.floor(Math.random()*255)},${Math.floor(Math.random()*255)})`;
  stroke();
}
}
var x=0;
var y=0;
var sp=0.5;
function draw() {
  if(Math.random()>0.5){
    s(x,y,x+sp,y+sp);
} else{
    s(x,y+sp,x+sp,y);
}
x+=sp;
if(x>can.width){
  x=0;
  y+=sp;
}
requestAnimationFrame(draw);
}


requestAnimationFrame(draw);
</script>


<script id="jsbin-source-css" type="text/css">body{
  margin:0;
  padding:0;
}</script>

<script id="jsbin-source-javascript" type="text/javascript">var can=document.createElement("canvas");
document.body.appendChild(can);
var ctx=can.getContext("2d");
with(can){
  width=window.innerWidth;
  height=window.innerHeight;
}

function s(a,b,c,d) {
  with(ctx){
  beginPath();
  moveTo(a,b);
  lineTo(c,d);
  lineWidth=3;
  lineCap="round";
  strokeStyle=`rgb(${Math.floor(Math.random()*255)},${Math.floor(Math.random()*255)},${Math.floor(Math.random()*255)})`;
  stroke();
}
}
var x=0;
var y=0;
var sp=0.5;
function draw() {
  if(Math.random()>0.5){
    s(x,y,x+sp,y+sp);
} else{
    s(x,y+sp,x+sp,y);
}
x+=sp;
if(x>can.width){
  x=0;
  y+=sp;
}
requestAnimationFrame(draw);
}


requestAnimationFrame(draw);
</script></body>
</html>