设备方向感应测试（手机倾斜/旋转/陀螺仪/加速度），您可以拷贝源码到一个txt,后缀改为html,用手机测试
学习资料，交流所用，互相学习，共同进步：
您可以拷贝源码到一个txt,后缀改为html,用手机测试，很好玩儿的！！！
<!doctype html>
<html>
<head>
<meta charset="gbk"/>
<meta name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-touch-fullscreen" content="yes">
<style>
.test{
border:2px solid green;
width:300px;
height:350px;
background: #000;
position: relative;
COLOR:#FFF;
}
.test #ball{
width:12px;
height:12px;
background: #fff;
-webkit-border-radius:6px;
position: absolute;
left:0;
right: 0;
}
</style>
</head>
<body>
<h2>设备方向感应测试</h2>
<div id="msg"></div>
<div id='test' tabindex='0' class="test">
<!--<img src="img/3.png" id="ball">-->
<div id="ball"></div>
</div>
<img src="http://img01.taobaocdn.com/tps/i1/T15zFIXxJaXXbIZMjj-180-70.png" id="imgLogo" alt="">
<img src="http://img01.taobaocdn.com/tps/i1/T15zFIXxJaXXbIZMjj-180-70.png" id="imgLogo2" alt="">
<script>
function Orientation(selector){}
Orientation.prototype.init = function(){
window.addEventListener('deviceorientation', this.oriListener, false);
window.addEventListener('MozOrientation', this.oriListener, false); //为firefox所用
window.addEventListener('devicemotion', this.oriListener, false); //重力感应
}
Orientation.prototype.oriListener = function(e) {
setTimeout(function(){
handler(e);
deviceMotionHandler(e)
},10);
function handler(e){
// For FF3.6+
if (!e.gamma && !e.beta) {
// angle=radian*180.0/PI 在firefox中x和y是弧度值,
e.gamma = (e.x * (180 / Math.PI)); //转换成角度值,
e.beta = (e.y * (180 / Math.PI)); //转换成角度值
e.alpha = (e.z * (180 / Math.PI)); //转换成角度值
}
/* beta: -180..180 (rotation around x axis) */
/* gamma: -90..90 (rotation around y axis) */
/* alpha: 0..360 (rotation around z axis) (-180..180) */
var gamma = e.gamma
var beta = e.beta
var alpha = e.alpha
if(e.accelerationIncludingGravity){
// window.removeEventListener('deviceorientation', this.orientationListener, false);
gamma = e.accelerationIncludingGravity.x*300
beta = -e.accelerationIncludingGravity.y*300
alpha = event.accelerationIncludingGravity.z*300
}
if (this._lastGamma != gamma || this._lastBeta != beta) {
document.querySelector("#msg").innerHTML = "x: "+ beta.toFixed(2) + " y: " + gamma.toFixed(2) + " z: " + (alpha != null?alpha.toFixed(2):0)
var style = document.querySelector("#ball").style;
style.left = gamma/90 * 200 + 150 +"px";
style.top = beta/90 * 200 + 100 +"px";
this._lastGamma = gamma;
this._lastBeta = beta;
}
}
function deviceMotionHandler(e) {
/*
if(e.accelerationIncludingGravity){
var gx = e.accelerationIncludingGravity.x;
var gy = e.accelerationIncludingGravity.y;
var gz = e.accelerationIncludingGravity.z;
}
var facingUp = -1;
if (gz > 0) {
facingUp = +1;
}
var tiltLR = Math.round(((gx) / 9.81) * -90);
var tiltFB = Math.round(((gy + 9.81) / 9.81) * 90 * facingUp);
//document.getElementById("moCalcTiltLR").innerHTML = tiltLR;
// document.getElementById("moCalcTiltFB").innerHTML = tiltFB;
var rotation = "rotate(" + tiltLR + "deg) rotate3d(1,0,0, " + (tiltFB) + "deg)";
document.getElementById("imgLogo").style.webkitTransform = rotation;
*/
var gamma = e.gamma
var beta = e.beta
var alpha = e.alpha
var tiltLR =gamma; //Math.round(((beta) / 9) * -90);
var tiltFB = beta;
var rotation = "rotate(" + tiltLR + "deg)";
var rotation2 = "rotate(" + tiltFB + "deg)";
var style = document.querySelector("#imgLogo").style;
var style2 = document.querySelector("#imgLogo2").style;
style.webkitTransform = rotation;
style2.webkitTransform = rotation2;
}
};
(new Orientation()).init();
</script>
</body>
</html>
