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haoningabc
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html5 陀螺仪

html5 
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<html>

<head>
<title>DeviceOrientationEvent</title>
<meta charset="UTF-8" />
<script type="text/javascript">
function orientationHandler(event){
	document.getElementById("alpha").innerHTML = event.alpha;
	document.getElementById("beta").innerHTML = event.beta;
	document.getElementById("gamma").innerHTML = event.gamma;
	document.getElementById("heading").innerHTML = event.webkitCompassHeading;
	document.getElementById("accuracy").innerHTML = event.webkitCompassAccuracy;
}


function motionHandler(event){
	document.getElementById("interval").innerHTML = event.interval;
	var acc = event.acceleration;
	document.getElementById("x").innerHTML = acc.x;
	document.getElementById("y").innerHTML = acc.y;
	document.getElementById("z").innerHTML = acc.z;
	var accGravity = event.accelerationIncludingGravity;
	document.getElementById("xg").innerHTML = accGravity.x;
	document.getElementById("yg").innerHTML = accGravity.y;
	document.getElementById("zg").innerHTML = accGravity.z;
	var rotationRate = event.rotationRate;
	document.getElementById("Ralpha").innerHTML = rotationRate.alpha;
	document.getElementById("Rbeta").innerHTML = rotationRate.beta;
	document.getElementById("Rgamma").innerHTML = rotationRate.gamma;
}

if (window.DeviceMotionEvent){
	window.addEventListener("devicemotion", motionHandler, false);
} else {
	document.body.innerHTML = "What user agent u r using？？？";
}

if (window.DeviceOrientationEvent){
	window.addEventListener("deviceorientation", orientationHandler, false);
} else {
	document.body.innerHTML = "What user agent u r using？？？";
};
</script>
</head>

<body>
	<p>
		阁下：<span id="alpha">0</span>
	</p>
	<p>
		前后：<span id="beta">0</span>
	</p>
	<p>
		扭转：<span id="gamma">0</span>
	</p>
	<p>
		指北针指向：<span id="heading">0</span>度
	</p>
	<p>
		指北针精度：<span id="accuracy">0</span>度
	</p>
	<hr />
	<p>
		x轴加快度：<span id="x">0</span>米每二次方秒
	</p>
	<p>
		y轴加快度：<span id="y">0</span>米每二次方秒
	</p>
	<p>
		z轴加快度：<span id="z">0</span>米每二次方秒
	</p>
	<hr />
	<p>
		x轴加快度(推敲重力加快度)：<span id="xg">0</span>米每二次方秒
	</p>
	<p>
		y轴加快度(推敲重力加快度)：<span id="yg">0</span>米每二次方秒
	</p>
	<p>
		z轴加快度(推敲重力加快度)：<span id="zg">0</span>米每二次方秒
	</p>
	<hr />
	<p>
		阁下扭转速度：<span id="Ralpha">0</span>度每秒
	</p>
	<p>
		前后扭转速度：<span id="Rbeta">0</span>度每秒
	</p>
	<p>
		扭转速度：<span id="Rgamma">0</span>度每秒
	</p>
	<hr />
	<p>
		前次收到通知的间隔：<span id="interval">0</span>毫秒
	</p>



</body>

</html>


pedestrian dead reckoning
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