css设置八等分圆

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现需要上图样式的布局，我通过两张向右方的图片，通过定位和旋转完成了布局。

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问题：
由于是通过旋转获取到的样式，实际的盒子是一个长方形，当鼠标移入对应的箭头时选中的可能是其他盒子，如第一张设计稿可以看出，先需要移入对应块添加事件。

解决方法： 又画了一个圆，将圆平分成8等分通过css样式覆盖保证移入时能移入对应的块。然后覆盖到原本的环形块上，背景透明就可以看到想要的效果和实现事件。设计中心空白不能点击，多添加一个小圆环覆盖。
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参考地址：https://blog.csdn.net/yatsov/article/details/81590011

八等分圆代码

<!DOCTYPE html>
<html>
<head><title>CSS等分圆</title><meta charset="utf-8"><style type="text/css">.circle-left{width: 62.5px;height: 125px;border-radius: 0px 62.5px 62.5px 0px;position: absolute;right: 0;transform-origin: 0 50%;}.circle-left:hover{background-color: yellowgreen !important;}.circle-right{width: 62.5px;height: 125px;border-radius:  62.5px 0px 0px 62.5px ;position: absolute;right: 0;transform-origin: 100% 50%;}#circle0{width: 125px;height: 125px;border-radius: 62.5px;background-color: yellowgreen;position: relative;transform: rotate(-22.5deg);}#circle2{background-color: #70f3ff;}#circle3{background-color: #ff461f;transform: rotate(45deg);}#circle4{background-color: #bce672;transform: rotate(90deg);}#circle5{background-color: #ffffff;transform: rotate(135deg);}#circle6{background-color: #3b2e7e;transform: rotate(-135deg);}#circle7{background-color: #ff2121;transform: rotate(270deg);}#circle8{background-color: #16a951;transform: rotate(315deg);}#circle9{background-color: #e0eee8;transform: rotate(45deg)}#left{clip: rect(0px 62.5px 125px 0px);position: absolute;right: 0px;width: 62.5px;height: 125px;overflow: hidden;}#right{clip: rect(0px 62.5px 125px 0px);position: absolute;left: 0px;width: 62.5px;height: 125px;overflow: hidden;}</style>
</head>
<body><div id="circle0"><div id="left"><div class="circle-left" id="circle2">1</div><div class="circle-left" id="circle3">2</div><div class="circle-left" id="circle4">3</div><div class="circle-left" id="circle5">4</div></div><div id="right"><div class="circle-right" id="circle9">6</div><div class="circle-right" id="circle8">7</div><div class="circle-right" id="circle7">8</div><div class="circle-right" id="circle6">9</div></div></div>
</body>
</html>
``## 实际业务样式代码
```vue
<template><div class="control"><!-- 加add 减subtract --><div class="control_img_box" title="关闭声音"><img src="@/assets/image/vol.png" alt=""></div><div class="control_img_box" title="进入全屏"><img @click="screenfull" src="@/assets/image/full.png" alt=""></div><div class="control_img_box" @click="setCameraControl" title="云台控制器"><img src="@/assets/image/control.png" alt=""></div><!-- 云台控件 摄像头控制 --><div class="camera-control" v-show="isShowCameraControl"><div class="camera-control-left flex"><div class="content-box"><!-- 拼接辅助线 --><!-- <div class="line1"></div><div class="line2"></div> --><!-- 展示圆环 --><div class="img-box" :class="'img-box'+(i+1)" v-for="(url,i) in imgArr" :key="i"><img @mouseenter="handleMouseEnter(i)" @mouseleave="handleMouseLeave(i)" :src="url" alt=""></div><!-- 绑定事件的透明圆环 --><div id="circle0"><div id="left"><div class="circle-left" @mouseenter="handleMouseEnter(1)" @mouseleave="handleMouseLeave(1)" id="circle2"></div><div class="circle-left" @mouseenter="handleMouseEnter(2)" @mouseleave="handleMouseLeave(2)" id="circle3"></div><div class="circle-left" @mouseenter="handleMouseEnter(3)" @mouseleave="handleMouseLeave(3)" id="circle4"></div><div class="circle-left" @mouseenter="handleMouseEnter(4)" @mouseleave="handleMouseLeave(4)" id="circle5"></div></div><div id="right"><div class="circle-right" @mouseenter="handleMouseEnter(8)" @mouseleave="handleMouseLeave(8)" id="circle9"></div><div class="circle-right" @mouseenter="handleMouseEnter(7)" @mouseleave="handleMouseLeave(7)" id="circle8"></div><div class="circle-right" @mouseenter="handleMouseEnter(6)" @mouseleave="handleMouseLeave(6)" id="circle7"></div><div class="circle-right" @mouseenter="handleMouseEnter(5)" @mouseleave="handleMouseLeave(5)" id="circle6"></div></div><div class="center"></div></div></div></div><div class="camera-control-right"><div class="btn-list"><div>变焦</div><div class="btn-box"><div class="flex" @click="toZoom('add')"><img src="@/assets/image/add.png" alt=""></div><div class="flex" @click="toZoom('minus')"><img src="@/assets/image/minus.png" alt=""></div></div></div><div class="btn-list"><div>缩放</div><div class="btn-box"><div class="flex" @click="toScale('add')"><img src="@/assets/image/add.png" alt=""></div><div class="flex" @click="toScale('minus')"><img src="@/assets/image/minus.png" alt=""></div></div></div></div></div></div>
</template><script>
import img from '@/assets/image/arrows.png'
import img2 from '@/assets/image/arrows21.png'
export default {name: '',components: {},props: [],data() {return {isShowCameraControl: false,imgArr: [img, img, img, img, img, img, img, img],}},mounted() {},methods: {handleMouseEnter(i) {this.$set(this.imgArr, i - 1, img2)},handleMouseLeave(i) {this.$set(this.imgArr, i - 1, img)},setCameraControl() {this.isShowCameraControl = !this.isShowCameraControl},screenfull() {this.$emit('screenfull')},toScale(str) {console.log('缩放', str)},toZoom(str) {console.log('变焦', str)}}
}
</script>
<style lang='scss' scoped>
.control {position: absolute;left: 0px;bottom: 0px;width: 100%;padding: 15px 7px;display: flex;justify-content: flex-end;&_img_box {cursor: pointer;padding: 10px 10px 6px;margin-right: 10px;background: linear-gradient(162deg, rgba(3, 33, 120, 0.9) 0%, rgba(3, 33, 120, 0.4) 100%);border-radius: 3px;opacity: 1;border: 1px solid;border-image: linear-gradient(180deg, rgba(18, 106, 205, 1), rgba(11, 87, 173, 0)) 1 1;> img {width: 20px;height: 20px;}}.camera-control {position: absolute;display: flex;top: -150px;right: 16px;padding: 6px 10px;width: 319px;height: 150px;background: linear-gradient(to bottom right, #032078ab 30%, #0b57ad60 100%);> div {flex: 1;}&-left {.content-box {position: relative;width: 125px;height: 125px;border-radius: 50%;background: url('@/assets/image/circle.png');background-size: 125px 125px;.circle-left {width: 62.5px;height: 125px;border-radius: 0px 62.5px 62.5px 0px;position: absolute;right: 0;transform-origin: 0 50%;}.circle-right {width: 62.5px;height: 125px;border-radius: 62.5px 0px 0px 62.5px;position: absolute;right: 0;transform-origin: 100% 50%;}#circle0 {position: absolute;left: 0px;top: 0px;width: 125px;height: 125px;border-radius: 62.5px;position: relative;transform: rotate(-22.5deg);.center {position: absolute;left: 50%;top: 50%;transform: translate(-50%, -50%);width: 50px;height: 50px;border-radius: 50%;}}#circle3 {transform: rotate(45deg);}#circle4 {transform: rotate(90deg);}#circle5 {transform: rotate(135deg);}#circle6 {transform: rotate(-135deg);}#circle7 {transform: rotate(270deg);}#circle8 {transform: rotate(315deg);}#circle9 {transform: rotate(45deg);}#left {clip: rect(0px 62.5px 125px 0px);position: absolute;right: 0px;width: 62.5px;height: 125px;overflow: hidden;}#right {clip: rect(0px 62.5px 125px 0px);position: absolute;left: 0px;width: 62.5px;height: 125px;overflow: hidden;}.line1 {position: absolute;width: 125px;height: 2px;background: red;left: 50%;margin-left: -62.5px;top: 50%;margin-top: -1px;z-index: 999;}.line2 {position: absolute;left: 50%;margin-top: -62.5px;top: 50%;margin-left: -1px;width: 2px;height: 125px;background: red;z-index: 999;}.img-box {// width: 54px;// height: 58px;position: absolute;// > img {//     width: 54px;//     height: 58px;// }}.img-box1 {left: 31px;top: -14px;transform: rotate(-90deg);}.img-box2 {left: 64px;top: -2px;transform: rotate(-45deg);}.img-box3 {left: 79px;top: 29px;transform: rotate(0deg);}.img-box4 {left: 67px;top: 62px;transform: rotate(46deg);}.img-box5 {left: 36px;top: 77px;transform: rotate(90deg);}.img-box6 {left: 4px;top: 66px;transform: rotate(135deg);}.img-box7 {left: -12px;top: 35px;transform: rotate(-180deg);}.img-box8 {left: -1px;top: 2px;transform: rotate(-135deg);}}}&-right {display: flex;flex-direction: column;justify-content: center;align-items: center;font-size: 14px;font-weight: bold;color: #a5c3ff;.btn-list {display: flex;align-items: center;margin: 12px 0px;}.btn-box {width: 70px;height: 32px;margin-left: 12px;background: linear-gradient(180deg, #009afc 0%, #003cb1 100%);box-shadow: inset 0px 2px 4px 0px #08ebff, 0px 4px 4px 0px rgba(0, 0, 0, 0.25);border-radius: 2px;border: 1px solid #0e2977;display: flex;> div {width: 35px;height: 32px;cursor: pointer;> img {width: 16px;height: 16px;}}}}}
}
</style>