ucnv · March 7, 2010 16:09
diff --git a/patterns_for_twitter.html b/patterns_for_twitter.html
 <!doctype html>
 <html>
 <head>
 <title>patterns</title>
 <meta charset="utf-8">
 <style type="text/css">
 body {
  text-align: center;
 }
 #x {
  font-family: Arial, sans-serif;
  font-size: 14px;
  line-height: 1;
  margin: 10px auto;
 }
 </style>
 <script>
 function patterns() {  
  var rows = 3;
  var cols = 40;
  var lines = [];
  var d = {
    '╫': 0,
    '═': 5,  // 0101
    '║': 10, // 1010
    '╔': 6,  // 0110
    '╗': 3,  // 0011
    '╚': 12, // 1100
    '╝': 9,  // 1001
    '╠': 14, // 1110
    '╣': 11, // 1011
    '╦': 7,  // 0111
    '╩': 13, // 1101
    '╬': 15, // 1111
  };
  
  var prevLine, thisLine;
  for(var i = 0; i < rows; i++) {
    thisLine = [];
    for(var j = 0; j < cols; j++) {
      var firstRow = i == 0, lastRow = i == rows - 1;
      var firstCol = j == 0, lastCol = j == cols - 1;
      var u = firstRow ? 0 : d[prevLine[j]] >> 1 & 1;
      var l = firstCol ? 0 : d[thisLine[j - 1]] >> 2 & 1;
      var c = [];
      for(var x in d) {
        if((d[x] >> 3 & 1) == u && (d[x] >> 0 & 1) == l) {
          if(lastCol && (d[x] >> 2 & 1) == 1) continue;
          if(lastRow && (d[x] >> 1 & 1) == 1) continue;
          if(!lastCol && (firstRow || lastRow) && (d[x] >> 2 & 1) == 0) continue;
          if(!lastRow && (firstCol || lastCol) && (d[x] >> 1 & 1) == 0) continue;
          c.push(x);
        }
      }
      thisLine[j] = c[Math.floor(Math.random() * c.length)];
    }
    lines.push(thisLine.join(''));
    prevLine = thisLine;
  }
  var x = document.getElementById('x');
  x.innerHTML = lines.join('<br />');
 }
 window.onload = function() {
  patterns();
  var ix = window.setInterval(patterns, 1000);
  window.stop = function() { window.clearInterval(ix); };
 };
 </script>
 </head>
 <body><div id="x"></div>
 <p><a href="javascript:stop();">stop</a></p></body>
 </html>
	<!doctype html>
	<html>
	<head>
	<title>patterns</title>
	<meta charset="utf-8">
	<style type="text/css">
	body {
	text-align: center;
	}
	#x {
	font-family: Arial, sans-serif;
	font-size: 14px;
	line-height: 1;
	margin: 10px auto;
	}
	</style>
	<script>
	function patterns() {
	var rows = 3;
	var cols = 40;
	var lines = [];
	var d = {
	'╫': 0,
	'═': 5, // 0101
	'║': 10, // 1010
	'╔': 6, // 0110
	'╗': 3, // 0011
	'╚': 12, // 1100
	'╝': 9, // 1001
	'╠': 14, // 1110
	'╣': 11, // 1011
	'╦': 7, // 0111
	'╩': 13, // 1101
	'╬': 15, // 1111
	};

	var prevLine, thisLine;
	for(var i = 0; i < rows; i++) {
	thisLine = [];
	for(var j = 0; j < cols; j++) {
	var firstRow = i == 0, lastRow = i == rows - 1;
	var firstCol = j == 0, lastCol = j == cols - 1;
	var u = firstRow ? 0 : d[prevLine[j]] >> 1 & 1;
	var l = firstCol ? 0 : d[thisLine[j - 1]] >> 2 & 1;
	var c = [];
	for(var x in d) {
	if((d[x] >> 3 & 1) == u && (d[x] >> 0 & 1) == l) {
	if(lastCol && (d[x] >> 2 & 1) == 1) continue;
	if(lastRow && (d[x] >> 1 & 1) == 1) continue;
	if(!lastCol && (firstRow \|\| lastRow) && (d[x] >> 2 & 1) == 0) continue;
	if(!lastRow && (firstCol \|\| lastCol) && (d[x] >> 1 & 1) == 0) continue;
	c.push(x);
	}
	}
	thisLine[j] = c[Math.floor(Math.random() * c.length)];
	}
	lines.push(thisLine.join(''));
	prevLine = thisLine;
	}
	var x = document.getElementById('x');
	x.innerHTML = lines.join('<br />');
	}
	window.onload = function() {
	patterns();
	var ix = window.setInterval(patterns, 1000);
	window.stop = function() { window.clearInterval(ix); };
	};
	</script>
	</head>
	<body><div id="x"></div>
	<p><a href="javascript:stop();">stop</a></p></body>
	</html>