做个记录,避免遗忘
<!DOCTYPE html >
<html lang="en" onselectstart="return false;">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
*{
margin: 0;
padding: 0;
}
body {
background-color: #000;
}
.box{
width:133px;
height: 200px;
margin: 100px auto;
position:relative;
/* border: 1px solid #fff; 测试用到*/
transform-style: preserve-3d;
/*2.transform–style属性指定嵌套元素是在三维空间中呈现。(使用此属性必须先使用transform 属性)*/
/*perspective:800px;*/
/*3.设置透视距离*/
transform:perspective(800px) rotateX(0deg) rotateY(0deg) ;
}
.box div{
position: absolute;
top:0;
left: 0;
width: 100%;
height: 100%;
border: 0px;
/*border-radius: 3px;
//box-shadow: 0px 0px 5px #fff;
/*4.设置图片阴影*/
/* -webkit-box-reflect:below 10px -webkit-linear-gradient(transparent,transparent 50%,rgba(0,0,0,.6));
/*方法2-webkit-box-reflect:below 8px -webkit-linear-gradient(top,rgba(0,0,0,0)40%,rgba(0,0,0,.5)100%);*/
/*5.设置图片倒影:直接记住吧(3个值。1. direction 定义方向,取值包括 above 、 below 、 left 、 right。);2. offset定义反射偏移的距离;3.mask-box-image定义遮罩图像,该图像将覆盖投影区域。如果省略该参数值,则默认为无遮罩图像。*/
}
</style>
</head>
<body>
<div style="width: 647px;height: 386px;border: 1px solid #ff0000;line-height: 386px; ">
<div id="img1" class="box" style="position:relative;"></div>
</div>
<script>
function setImg(id,src,width,height) {
var parent=document.getElementById(id);
parent.style.width=width+"px";
parent.style.height=height+"px";
parent.style.top='calc( 50% - '+height/2+'px)';
parent.style.left="";
for (var i=0 ;i<width;i++){
var ele=document.createElement("div");
var pos = -i + "px";
/*
* backgroundImage: "url(" + img + ")",
backgroundPosition: "0px " + pos,
height: "1px",
width: _w + "px",
position: "absolute",
top: i + "px"
* */
ele.style.backgroundImage="url("+src+")";
ele.style.backgroundPosition=pos+" 0px";
ele.style.height=height+"px";
ele.style.width="1px";
ele.style.position="absolute";
ele.style.left=0 + "px";
ele.style.backgroundSize=width+"px "+height+"px";
parent.append(ele)
}
}
var width=250;
var height=150;
setImg("img1","./img/1.jpg",width,height)
setImg("img1","./img/2.jpg",width,height)
setImg("img1","./img/3.jpg",width,height)
setImg("img1","./img/4.jpg",width,height)
setImg("img1","./img/5.jpg",width,height)
setImg("img1","./img/6.jpg",width,height)
window.onload=function ( ) {
//1.获取元素
var oWrap = document.getElementById('img1');
var oImg = oWrap.children;
// var oImgLen=oImg.length;
//var deg = 360 / oImg.length;//3.每个需要旋转的度数
var degP =360/6;
var l= 1+(150/650);//w+w*(l/(s-l))1.231
//l=nπr/180;
var w=width;
//l=w+w(150/650)=n*Math.PI*150/180
var n=(w+w*(150/650))/(Math.PI*150/180)
console.log(n);
console.log(n/width);
var degC=0.16;//Math.atan(l/150)/(Math.PI / 180);//0.888479771920148//0.4
// 定义一个开始的度数
var roX = -10;
var roY = 0;
var x, y, x_, y_, xN, yN, time = null;
//2.遍历所有的img标签
for(var i=0;i<6;i++){
for (var j=0;j<width;j++){
oImg[j+i*width].style.transform = 'rotateY(' + (i * degP+j*degC) + 'deg) translateZ(150px)';
// oImg[j+i*width].style.transition = ' all 1s ' + (oImg.length - i - 1) * 0.1 + 's';
//transition:设置过渡
oImg[j+i*width].ondragstart = function () {
return false;
}
}
}
/* for (var i = 0; i < oImg.length; i++) {
// oImg[i].style.cssText='transform:rotateY('+i*deg+'deg ) translateZ(350px);transition:1s'+ (oImgLen-i)*0.1 +'s;';
oImg[i].style.transform = 'rotateY(' + i * deg + 'deg) translateZ(350px)';
oImg[i].style.transition = ' all 1s ' + (oImg.length - i - 1) * 0.1 + 's';
//transition:设置过渡
oImg[i].ondragstart = function () {
return false;
}
}*/
//3.事件处理
document.onmousedown=function ( e ) {
clearInterval(time);
e=e||window.event;
x_=e.clientX;
y_=e.clientY;
// console.log ( "鼠标按下了" )
this.onmousemove=function ( e ) {
e=e||window.event;
//获取滚动的X和Y轴
//client:鼠标触发点相对于页面可视区域左上角距离
x=e.clientX;
y=e.clientY;
//两点之间的差值:第一次走的时候两值相等,第二次走的时候x已经更新,但x_没更新,所以两个差值就是xN;
xN=x-x_;
yN=y-y_;
//差值拼接到旋转的Y里面去
roY+=xN*0.2;//水平拖影响Y轴;
roX-=yN*0.2;
oWrap.style.transform='perspective(800px) rotateX('+roX+'deg) rotateY('+roY+'deg)';
// var oDiv =document.createElement('div');
// this.body.appendChild(oDiv);
// oDiv.style.cssText='width:5px;height:5px; background:red;position:absolute;left:'+x+"px;top:"+y+"px";这三行是测试用的
x_=e.clientX;
y_=e.clientY;
}
this.onmouseup=function ( ) {
// console.log ( "鼠标抬起了" )
this.onmousemove= null;
//设置一个定时器,实现后面惯性效果8
time=setInterval(function ( ) {
//无限乘以零点95它会接近0的状态
xN*=0.95;
yN*=0.95;
//当它小到0.1时停止计时器
if(Math.abs(xN)<0.1 && Math.abs(yN)<0.1){//Math.abs()是返回绝对值
clearInterval(time);
}
//差值拼接到旋转的Y里面去
roY+=xN*0.2;//水平拖影响Y轴;
roX-=yN*0.2;
oWrap.style.transform='perspective(800px) rotateX('+roX+'deg) rotateY('+roY+'deg)';
},30)
}
}
}
</script>
</body>
</html>
这里需要添加图片