设备屏幕方向与运动 https://developers.google.cn/web/fundamentals/native-hardware/device-orientation/
MDN deviceorientation文档 https://developer.mozilla.org/zh-CN/docs/Web/Events/deviceorientation
设备动作和方向事件可访问移动设备上的内置加速度计、陀螺仪和罗盘
Alpha 围绕 Z 轴的旋转
Beta 围绕 X 轴的旋转
Gamma 围绕 Y 轴的旋转
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<!-- Chrome, Firefox OS and Opera -->
<meta name="theme-color" content="#ff4081">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<link rel="manifest" href="/manifest.json">
<title>Ajanuw</title>
<style>
#img {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
transition: transform 1;
120px;
height: 120px;
background-image: url(http://per.kelantu.com/photos/1515232896-FnIf9c57Hf1-l7DUdBwlXdN1bcLv-ng0?e=3153600000&token=CT86R8zZYVXDyHWEWFoMX4pz0ksOzxtKCaC80si4:ZodhYJxq7jbwaeeCe_r_9de7Nf4=);
background-image: image-set(
url(http://per.kelantu.com/photos/1515232896-FnIf9c57Hf1-l7DUdBwlXdN1bcLv-ng0?e=3153600000&token=CT86R8zZYVXDyHWEWFoMX4pz0ksOzxtKCaC80si4:ZodhYJxq7jbwaeeCe_r_9de7Nf4=) 1x,
url(http://per.kelantu.com/photos/1514437475-FlTozLVMxiq8Ctx0Mbh8G5Hc6hvk-ng0?e=3153600000&token=CT86R8zZYVXDyHWEWFoMX4pz0ksOzxtKCaC80si4:0Jf5nGsPWg5WhNUgQJisyMcGiaQ=) 2x
);
background-image: -webkit-image-set(
url(http://per.kelantu.com/photos/1515232896-FnIf9c57Hf1-l7DUdBwlXdN1bcLv-ng0?e=3153600000&token=CT86R8zZYVXDyHWEWFoMX4pz0ksOzxtKCaC80si4:ZodhYJxq7jbwaeeCe_r_9de7Nf4=) 1x,
url(http://per.kelantu.com/photos/1514437475-FlTozLVMxiq8Ctx0Mbh8G5Hc6hvk-ng0?e=3153600000&token=CT86R8zZYVXDyHWEWFoMX4pz0ksOzxtKCaC80si4:0Jf5nGsPWg5WhNUgQJisyMcGiaQ=) 2x
);
}
</style>
</head>
<body>
<div id="doeSupported"></div>
<div id="doc"></div>
<div id="img"></div>
<script type="text/javascript">
let w = window.innerWidth;
let h = window.innerHeight;
let ww = w / 170;
let hh = h / 90;
function set2(num){
if(num){
return num.toFixed(2);
}
return null;
}
function deviceOrientationHandler(e) {
console.log( e);
var doc = `
Z 轴的旋转 => ${set2(e.alpha)};<br/>
X 轴的旋转 => ${set2(e.beta)};<br/>
Y 轴的旋转 => ${set2(e.gamma)};<br/>
`;
document.getElementById("doc").innerHTML = doc;
update(e.beta, e.gamma, e.alpha);
}
function update(x,y,z){
document.getElementById("img")
.style.transform = `translate(${(y*ww)-60}px, ${(x*hh)-60}px) rotate(${z - 90}deg)`;
}
if (window.DeviceOrientationEvent) { // 设备方向
window.addEventListener('deviceorientation', deviceOrientationHandler, false);
document.getElementById("doeSupported").innerText = "Supported!";
}
function deviceMotionHandler(e) {
console.log( e.acceleration);// 加速度
}
if(window.DeviceMotionEvent){ // 设备动作
window.addEventListener('devicemotion', deviceMotionHandler);
}
</script>
</body>
</html>