accessibility-developer-tools
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This is a library of accessibility-related testing and utility code.
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HTML
<html>
<!--
Copyright 2011 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
Author: nicksantos@google.com (Nick Santos)
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Performance Tests - Vector math</title>
<link rel="stylesheet" type="text/css"
href="../testing/performancetable.css"/>
<script src="../base.js"></script>
<script>
goog.require('goog.crypt');
goog.require('goog.string');
goog.require('goog.testing.PerformanceTable');
goog.require('goog.testing.jsunit');
goog.require('goog.vec.Vec4');
</script>
</head>
<body>
<h1>Closure Performance Tests - Vector Math</h1>
<p>
<strong>User-agent:</strong>
<script>document.write(navigator.userAgent);</script>
</p>
<div id="perfTable"></div>
<hr>
<script>
var table = new goog.testing.PerformanceTable(
goog.dom.getElement('perfTable'));
var createVec4FromValues = goog.vec.Vec4.createFromValues;
var scaleVec4 = goog.vec.Vec4.scale;
var negateVec4ByScaling = function(v, result) {
return scaleVec4(v, -1, result);
};
var negateVec4ByNegation = function(v, result) {
result[0] = -v[0];
result[1] = -v[1];
result[2] = -v[2];
result[3] = -v[3];
return result;
};
var negateVec4ByMultiplication = function(v, result) {
result[0] = -1 * v[0];
result[1] = -1 * v[1];
result[2] = -1 * v[2];
result[3] = -1 * v[3];
return result;
};
function createRandomVec4() {
return createVec4FromValues(
Math.random(),
Math.random(),
Math.random(),
Math.random());
}
function testNegateVec4ByScaling() {
var v = createRandomVec4();
for (var i = 0; i < 2000000; i++) {
// Warm the trace tree to see if that makes a difference.
scaleVec4(v, 1, v);
}
table.run(
function() {
for (var i = 0; i < 2000000; i++) {
negateVec4ByScaling(v, v);
}
},
'Negate vector by calling scale()');
}
function testNegateVec4ByNegation() {
var v = createRandomVec4();
for (var i = 0; i < 2000000; i++) {
// Warm the trace tree to see if that makes a difference.
scaleVec4(v, 1, v);
}
table.run(
function() {
for (var i = 0; i < 2000000; i++) {
negateVec4ByNegation(v, v);
}
},
'Negate vector by negating directly');
}
</script>
</body>
</html>