直接看代码：

<template><div class="mainrouter centerWindi"><div ref="mouse" class="mouse" @mouseenter="handleMouse"></div></div>
</template>
<script setup>
import { onMounted, ref } from 'vue';
import gsap from 'gsap'const mouse = ref(null)
// 拿到鼠标的进入事件
// 监听鼠标进入事件
const handleMouse = (e) => {const theta = Math.atan2(mouse.value.offsetHeight, mouse.value.offsetWidth)const angle = Math.atan2(e.offsetX - mouse.value.offsetWidth / 2, mouse.value.offsetHeight / 2 - e.offsetY)const direction = ref('')console.log(theta, angle);if (angle < theta && angle > -theta) {direction.value = 'top';gsap.fromTo(mouse.value, {backgroundPositionY: `-${window.innerHeight}px`}, {backgroundPositionY: `0px`,duration: 0.5,ease: "none",//匀速// repeat:-1,//无限循环// yoyo: true,//往返运动})} else if (angle >= theta && angle < Math.PI - theta) {direction.value = "right";gsap.fromTo(mouse.value, {backgroundPositionX: `${window.innerHeight}px`}, {backgroundPositionX: `0px`,duration: 0.5,ease: "none",//匀速// repeat:-1,//无限循环// yoyo: true,//往返运动})} else if (angle >= Math.PI - theta || angle < -Math.PI + theta) {direction.value = "bottom";gsap.fromTo(mouse.value, {backgroundPositionY: `${window.innerHeight}px`}, {backgroundPositionY: `0px`,duration: 0.5,ease: "none",//匀速// repeat:-1,//无限循环// yoyo: true,//往返运动})} else {direction.value = "left";gsap.fromTo(mouse.value, {backgroundPositionX: `-${window.innerHeight}px`}, {backgroundPositionX: `0px`,duration: 0.5,ease: "none",//匀速// repeat:-1,//无限循环// yoyo: true,//往返运动})}}</script><style>
.mouse {border: 0.5px solid #000;background-color: red;width: 300px;height: 300px;background: url("./img/1.png") no-repeat;background-size: cover;
}
/* 路由 */
.mainrouter {background-color: white;width: 100%;height: 100%;border-radius: 4px;padding: 25px;
}
/* 居中 */
.centerWindi {@apply flex justify-center items-center;
}</style>