HEX

File: //usr/share/doc/libjs-excanvas/examples/testcases/linewidth.html
<!DOCTYPE html>
<html>
<head>
<title>Line Width Test</title>
<style>

body {
  text-align: center
}

</style>
<!--[if IE]><script type="text/javascript" src="../excanvas.js"></script><![endif]-->
<script>

window.onload = function() {
  var ctx = document.getElementById('c').getContext('2d');

  ctx.strokeStyle = 'black';
  ctx.lineWidth = 1;
  for (var i = 0; i < 100; i++) {
    ctx.beginPath();
    ctx.moveTo(49 + i / 100, i);
    ctx.lineTo(49 + i / 100, i + 1);
    ctx.closePath();
    ctx.stroke();
  }

  for (var i = 0; i < 100; i++) {
    ctx.beginPath();
    ctx.moveTo(i, 49 + i / 100);
    ctx.lineTo(i + 1, 49 + i / 100);
    ctx.closePath();
    ctx.stroke();
  }
};

</script>
</head>
<body>

<canvas id=c width=100 height=100></canvas>

<p>This tests that lines work in the same way in different browsers when you are
using sub pixel coordinates.</p>

</body>
</html>