Web Front-endCSS TutorialExample introduction of css3 transform and native js to realize mouse dragging 3D cube rotationExample introduction of css3 transform and native js to realize mouse dragging 3D cube rotation
This article uses native JS, click events, mouse press, mouse lift and mouse move events to realize the drag and rotation of the 3D cube, and reflect the rotation angle to the interface in real time.
Implementation principle: By obtaining the coordinates when the mouse clicks on the screen and the coordinates when the mouse moves, the distance moved by the mouse on the X-axis and Y-axis is obtained. The distance is assigned to the transform attribute in real time.
Thus, the effect of 3D cube rotation can be achieved by changing the transform:rotate attribute value:
HTML code block:
<body>
<input type="button" class="open" value="点击散开"/>
<input type="text" class="xNum" value="0"/>//X轴旋转角度
<input type="text" class="yNum" value="0"/>//Y轴旋转角度
<input type="text" class="zNum"/>
<p class="big_box">
<p class="box">
<span>1</span>
<span>2</span>
<span>3</span>
<span>4</span>
<span>5</span>
<span>6</span>
</p>
</p>
</body>
CSS code block:
<style>
body{cursor: url("img/openhand1.png"),auto;}
.big_box{
width: 500px;
height: 500px;
margin: 200px auto;
}
.box{
-webkit-transform-style: preserve-3d;
-moz-transform-style: preserve-3d;
-ms-transform-style: preserve-3d;
transform-style: preserve-3d;
transform-origin:100px 100px 00px;
position: relative;
transform: rotatex(0deg) rotatey(0deg) rotatez(0deg)scale3d(0.7,0.7,0.7);
}
.box span{
transition: all 1s linear;
}
span{
display: block;
position: absolute;
width: 200px;
height: 200px;
box-sizing: border-box;
border:1px solid #999;
/*opacity: 0.7;*/
text-align: center;
line-height: 200px;
font-size: 60px;
font-weight: 700;
border-radius: 12%;
}
.box span:nth-child(1){
background-color: deepskyblue;
transform-origin: left;
transform: rotatey(-90deg) translatex(-100px);//左
}
.box span:nth-child(2){
background-color: red;
transform-origin: rightright;
transform: rotatey(90deg) translatex(100px) ;//右
}
.box span:nth-child(3){
background-color: green;
transform-origin: top;
transform: rotatex(90deg) translatey(-100px) ;//上
}
.box span:nth-child(4){
background-color: #6633FF;
transform-origin: bottombottom;
transform: rotatex(-90deg) translatey(100px);//下
}
.box span:nth-child(5){
background-color: gold;
transform: translatez(-100px);//后
}
.box span:nth-child(6){
background-color: #122b40;
transform: translatez(100px);//前
}
.box:hover span{
opacity: 0.3;
}
.box:hover{
animation-play-state:paused;//设置动画暂停
}
</style>
JS code block:
<script>
move();
clickBox();
//鼠标按下且移动时触发，
function move(){
var body = document.querySelector("body");
var box = document.querySelector(".box");
var xNum =document.querySelector(".xNum");
var yNum =document.querySelector(".yNum");
var x = 0,y = 0,z = 0;
var xx = 0,yy = 0;
var xArr = [],yArr = [];
window.onmousedown = function (e) {//鼠标按下事件
body.style.cursor = 'url("img/closedhand1.png"),auto';
xArr[0] = e.clientX/2;//获取鼠标点击屏幕时的坐标
yArr[0] = e.clientY/2;
window.onmousemove = function (e) {//鼠标移动事件————当鼠标按下且移动时触发
xArr[1] = e.clientX/2;//获取鼠标移动时第一个点的坐标
yArr[1] = e.clientY/2;
yy += xArr[1] - xArr[0];//获得鼠标移动的距离
xx += yArr[1] - yArr[0];
xNum.value = xx+"°";//将所获得距离数字赋值给input显示旋转角度
yNum.value = yy+"°";
//将旋转角度写入transform中
box.style.transform = "rotatex("+xx+"deg) rotatey("+yy+"deg) rotatez(0deg)scale3d(0.7,0.7,0.7)";
xArr[0] = e.clientX/2;
yArr[0] = e.clientY/2;
}
};
window.onmouseup = function () {//鼠标抬起事件————用于清除鼠标移动事件，
body.style.cursor = 'url("img/openhand1.png"),auto';
window.onmousemove = null;
}
}
//点击事件、负责立方体盒子的六面伸展
function clickBox(){
var btn = document.querySelector(".open");
var box = document.querySelector(".box");
var son = box.children;
var value = 0;
//存储立方体散开时的transform参数
var arr0 = ["rotatey(-90deg) translatex(-100px)","rotatey(90deg) translatex(100px)","rotatex(90deg) translatey(-100px)",<br>"rotatex(-90deg) translatey(100px)","translatez(-100px)","translatez(100px)"];
//存储立方体合并时的transform参数
var arr1 = ["rotatey(-90deg) translatex(-100px)translatez(100px)","rotatey(90deg) translatex(100px)translatez(100px)",<br>"rotatex(90deg) translatey(-100px)translatez(100px)","rotatex(-90deg) translatey(100px)translatez(100px)","translatez(-200px)","translatez(200px)"];
btn.onclick = function(){
if(value == 0){
value = 1;
btn.value = "点击合并";
for(var i=0;i<arr1.length;i++){
son[i].style.transform = arr1[i];
console.log(son[i])
}
}else if(value == 1){
value = 0;
btn.value = "点击散开";
for(var j=0;j<arr0.length;j++){
son[j].style.transform = arr0[j];
console.log(j);
}
}
};
}
</script>
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