js实现拖动节点围绕圆心转动
1.使用transform属性,将圆环放倒展示为椭圆
圆环上有不同的色彩,在转动的同时,需要让圆环也转动,所以圆环不能是椭圆,而是圆形,这样在转动的时候,改变rotate,可以让圆环绕中间转动
<div class="home-cirque-hidden">
<div class="home-cirque-div" :style="`transform: rotateX(76deg) rotateZ(${theta * -1}deg);`"></div>
</div>
.home-cirque{
width: 1560px;
height: 1560px;
position: absolute;
left: 55px;
top: -773px;
transform-style: preserve-3d;
perspective: 3000px;
}
.home-cirque-div{
width: 1560px;
height: 1560px;
position: absolute;
left: 0;
top: -638px;
background: url('../assets/home/circle1.png') no-repeat center;
background-size: contain;
}
.home-cirque-hidden{
width: 1560px;
height: 371px;
position: absolute;
left: 0;
top: 629px;
overflow: hidden;
transform-style: preserve-3d;
perspective: 3000px;
}
2.将12个节点绘制上去,并且进行旋转
12个节点的圆心设置到外部,在转动的时候可以围绕一个圆心点转动,形成3d旋转,但是点位不能旋转,所以在旋转的同时,需要让点位自转,抵消掉父元素围绕圆心的转动
<div class="home-ellipse" @mousedown="turnDown" @mousemove="turnMove">
<div :style="`transform: translateZ(800px) rotateY(${theta + item.num}deg);`" :class="`home-dot home-dot${item.index}`" v-for="item in dotList" :key="item.index">
<div class="home-dot-line" :style="`transform: rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);height:${scaleFun(item)==1.3?93:64}px;`"></div>
<div :style="`transform: rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);`" class="home-dot-box"><div></div></div>
<div :style="`transform:translateZ(1px) translateX(-50%) rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);`" :class="`home-list home-list${item.index}`">
<div :style="`transform: translateX(-50%) translateY(${scaleFun(item)==1.3?-50:0}%);`" :class="scaleFun(item)==1.3?'home-list-active':'home-list-bg'">
{{ item.title }}
</div>
</div>
</div>
</div>
.home-ellipse{
width: 280px;
height: 400px;
position: absolute;
left: 697px;
top: -192px;
transform-style: preserve-3d;
transform: rotateX(-13deg) rotateY(0deg);
perspective: 7000px;
}
.home-dot{
width: 100%;
height: 100%;
position: absolute;
transform-origin: center center -750px;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 100;
transform-style: preserve-3d;
perspective: 10000px;
}
.home-dot-box{
width: 52px;
height: 52px;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 1;
background: url('../assets/home/dot.png') no-repeat center;
background-size: contain;
}
.home-dot-line{
width: 1px;
height: 64px;
position: absolute;
left: 0;
right: 0;
margin: 0 auto;
bottom: 56%;
background: url('../assets/home/dot-line.png') no-repeat center top;
background-size: cover;
}
.home-list{
position: absolute;
width: 199px;
height: 98px;
left: 50%;
top: calc(50% - 170px);
z-index: 2;
transform: translateX(-50%);
}
.home-list div{
position: absolute;
left: 50%;
top: 0;
z-index: 2;
text-align: center;
text-wrap: balance;
transition: transform 0.3s;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: center;
}
.home-list-bg{
font-size: 16px;
width: 229px;
height: 98px;
padding: 20px 20px;
background: url('../assets/home/list-bg.png') no-repeat center;
background-size: 100%;
}
.home-list-active{
width: 405px;
height: 197px;
font-size: 22px;
line-height: 26px;
padding: 47px 61px;
font-weight: bold;
background: url('../assets/home/list-active.png') no-repeat center;
background-size: 100%;
}
3.全部源码
<style scoped>
.home{
width: 100%;
height: 100%;
position: relative;
overflow: hidden;
background-color: #0a4662;
color: #fff;
}
.home-content{
width: 1623px;
height: 683px;
position: absolute;
bottom: -79px;
left: 204px;
}
.home-ellipse{
width: 280px;
height: 400px;
position: absolute;
left: 697px;
top: -192px;
transform-style: preserve-3d;
transform: rotateX(-13deg) rotateY(0deg);
perspective: 7000px;
}
.home-cirque{
width: 1560px;
height: 1560px;
position: absolute;
left: 55px;
top: -773px;
transform-style: preserve-3d;
perspective: 3000px;
}
.home-cirque-div{
width: 1560px;
height: 1560px;
position: absolute;
left: 0;
top: -638px;
background: url('../assets/home/circle1.png') no-repeat center;
background-size: contain;
}
.home-cirque-hidden{
width: 1560px;
height: 371px;
position: absolute;
left: 0;
top: 629px;
overflow: hidden;
transform-style: preserve-3d;
perspective: 3000px;
}
.home-dot{
width: 100%;
height: 100%;
position: absolute;
transform-origin: center center -750px;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 100;
transform-style: preserve-3d;
perspective: 10000px;
}
.home-dot-box{
width: 52px;
height: 52px;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 1;
background: url('../assets/home/dot.png') no-repeat center;
background-size: contain;
}
.home-dot-line{
width: 1px;
height: 64px;
position: absolute;
left: 0;
right: 0;
margin: 0 auto;
bottom: 56%;
background: url('../assets/home/dot-line.png') no-repeat center top;
background-size: cover;
}
.home-list{
position: absolute;
width: 199px;
height: 98px;
left: 50%;
top: calc(50% - 170px);
z-index: 2;
transform: translateX(-50%);
}
.home-list div{
position: absolute;
left: 50%;
top: 0;
z-index: 2;
text-align: center;
text-wrap: balance;
transition: transform 0.3s;
box-sizing: border-box;
display: flex;
align-items: center;
justify-content: center;
}
.home-list-bg{
font-size: 16px;
width: 229px;
height: 98px;
padding: 20px 20px;
background: url('../assets/home/list-bg.png') no-repeat center;
background-size: 100%;
}
.home-list-active{
width: 405px;
height: 197px;
font-size: 22px;
line-height: 26px;
padding: 47px 61px;
font-weight: bold;
background: url('../assets/home/list-active.png') no-repeat center;
background-size: 100%;
}
.home-line{
width: 1500px;
height: 1500px;
position: absolute;
left: 77px;
top: -700px;
transform-style: preserve-3d;
perspective: 5000px;
transform: rotateX(-12.7deg);
}
.home-line-box{
width: 1600px;
height: 393px;
position: absolute;
left: 0;
top: 597px;
overflow: hidden;
background: url('../assets/home/line-1.png') no-repeat center;
background-size: contain;
}
.home-point{
width: 7px;
height: 7px;
position: absolute;
transform-origin: center center -750px;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: rgba(255, 255, 255, 0.4);
border-radius: 500%;
}
.home-title{
position: absolute;
height: 13px;
transform-origin: center center -750px;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
transform-style: preserve-3d;
perspective: 500px;
}
.home-title div{
position: absolute;
width: 93px;
height: 13px;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
font-size: 12px;
}
</style>
<template>
<div class="home" @mouseup="turnUp">
<div class="home-content">
<div class="home-light"></div>
<div class="home-line">
<div class="home-line-box"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + (-13.7)}deg);`"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + 115}deg);`"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + 147}deg);`"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + 241.7}deg);`"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + 284.5}deg);`"></div>
<div class="home-point" :style="`transform: translateZ(790px) rotateY(${theta + 322.6}deg);`"></div>
<div class="home-title home-title1" :style="`transform: translateY(-2px) translateZ(810px) rotateY(${theta + 49}deg) scale(1)`"><div :style="`transform: rotateY(${titleComput(49,'+')}deg);`">测试环绕文字1</div></div>
<div class="home-title home-title3" :style="`transform: translateY(-2px) translateZ(810px) rotateY(${theta + 137.1}deg) scale(1);`"><div :style="`transform: rotateY(${titleComput(137.1,'+')}deg);`">测试环绕文字2</div></div>
<div class="home-title home-title6" :style="`transform: translateY(-2px) translateZ(810px) rotateY(${theta + 307.5}deg) scale(1);`"><div :style="`transform: rotateY(${titleComput(307.5,'+')}deg);`">测试环绕文字4</div></div>
<div class="home-title home-title7" :style="`transform: translateY(-2px) translateZ(810px) rotateY(${theta + 338}deg) scale(1);`"><div :style="`transform: rotateY(${titleComput(338,'+')}deg);`">测试环绕文字5</div></div>
<div class="home-title home-title8" :style="`transform: translateY(-2px) translateZ(810px) rotateY(${theta + 272}deg) scale(1);`"><div :style="`transform: rotateY(${titleComput(272,'+')}deg);`">测试环绕文字3</div></div>
</div>
<div class="home-cirque">
<div class="home-cirque-hidden">
<div class="home-cirque-div" :style="`transform: rotateX(76deg) rotateZ(${theta * -1}deg);`"></div>
</div>
</div>
<div class="home-ellipse" @mousedown="turnDown" @mousemove="turnMove">
<div :style="`transform: translateZ(800px) rotateY(${theta + item.num}deg);`" :class="`home-dot home-dot${item.index}`" v-for="item in dotList" :key="item.index">
<div class="home-dot-line" :style="`transform: rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);height:${scaleFun(item)==1.3?93:64}px;`"></div>
<div :style="`transform: rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);`" class="home-dot-box"></div>
<div :style="`transform:translateZ(1px) translateX(-50%) rotateY(${item.index==10?(theta*-1):rotateYfun(item.num)}deg);`" :class="`home-list home-list${item.index}`">
<div :style="`transform: translateX(-50%) translateY(${scaleFun(item)==1.3?-50:0}%);`" :class="scaleFun(item)==1.3?'home-list-active':'home-list-bg'">
{{ item.title }}
</div>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
export default{
data(){
return{
isdown:false,
startX:0,
startY:0,
upspin:0,
theta:-0.5, //一版本每个点位角度32.7 现在是27.8
dotList:[
{ index:10, num:0,title:'点位文字1'},
{ index:11, num:32.7,title:'点位文字2'},
{ index:1, num:65.4,title:'点位文字3'},
{ index:2, num:98.1,title:'点位文字4'},
{ index:3, num:130.8,title:'点位文字5'},
{ index:4, num:163.5,title:'点位文字6'},
{ index:5, num:196.2,title:'点位文字7'},
{ index:6, num:228.9,title:'点位文字8'},
{ index:7, num:261.6,title:'点位文字9'},
{ index:8, num:294.3,title:'点位文字10'},
{ index:9, num:327,title:'点位文字11'},
],
isItem:{}
}
},
mounted(){
},
methods:{
titleComput(data,symbol){
if(symbol=='-'){
return ((Math.abs(this.theta - data) % 360>100)&&(Math.abs(this.theta - data) % 360<300)?180:0)
}else{
return ((Math.abs(this.theta + data) % 360>100)&&(Math.abs(this.theta + data) % 360<300)?180:0)
}
},
rotateYfun(data){
return (this.theta + data)<=0?Math.abs(this.theta + data):(-1 * Math.abs(this.theta + data))
},
scaleFun(data){
if((Math.abs(this.theta + data.num)%360)<=10||(Math.abs(this.theta + data.num)%360)>=350){
this.isItem = data.num
}
return (Math.abs(this.theta + data.num)%360)<=7||(Math.abs(this.theta + data.num)%360)>=353?1.3:1
},
turnDown(e){
this.isdown = true
this.startX = e.clientX
this.startY = e.clientY
},
async turnMove(e){
if(this.isdown){
this.theta = (this.upspin + (e.clientX - this.startX) / 10) % 360
}
},
turnUp(){
this.isdown = false
this.upspin = this.theta
// 计算
if((Math.abs(this.theta + this.isItem)%360)<=7||(Math.abs(this.theta + this.isItem)%360)>=353){
this.theta = 0-this.isItem
this.upspin = this.theta
}
}
}
}
</script>