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<!DOCTYPE html>
<html>
<head>
<title>DeviceMotionEvent: A device lying flat on a horizontal surface with the screen upmost</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="author' title='Mosquito FP7">
<link rel="reviewer author" title="Zhiqiang Zhang" href="mailto:zhiqiang.zhang@intel.com"> <!-- 2013-10-14 -->
</head>
<body>
<p>Put the device on a horizontal surface with the screen upmost.</p>
<div id="log"></div>
<script>
var t = async_test();
var run = false;
/*
* A device lying flat on a horizontal surface with the screen upmost
* has an acceleration of zero and the following value for
* accelerationIncludingGravity:
* {
* x: 0,
* y: 0,
* z: 9.81
* };
*/
window.addEventListener("devicemotion", function(e) {
if (!run) {
run = true;
t.step(function() {
var gvt = e.accelerationIncludingGravity;
var acc = e.acceleration;
var rot = e.rotationRate;
assert_approx_equals(gvt.x, 0, 1);
assert_approx_equals(gvt.y, 0, 1);
assert_approx_equals(gvt.z, 9.81, 1.5);
assert_approx_equals(acc.x, 0, 1);
assert_approx_equals(acc.y, 0, 1);
assert_approx_equals(acc.z, 0, 1);
assert_equals(rot, null);
});
t.done();
}
}, false);
</script>
</body>
</html>
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