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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>soyo</title>
</head>
<body>
<div id="app">
<img class="main" src="./static/png/1_crop.png" alt="Image"/>
<img class="main" src="./static/png/2_crop.png" alt="Image"/>
<img class="main" src="./static/png/3_crop.png" alt="Image"/>
<img class="main" src="./static/png/4_crop.png" alt="Image"/>
<img class="main" src="./static/png/5_crop.png" alt="Image"/>
<img class="main" src="./static/png/6_crop.png" alt="Image"/>
<img class="main" src="./static/png/7_crop.png" alt="Image"/>
<img class="main" src="./static/png/8_crop.png" alt="Image"/>
</div>
<div id="angleDisplay">Move your mouse to see the angle!</div>
</body>
<style>
#app {
position: relative;
height: 100vh; /* 容器高度 */
}
.main {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%); /* 确保完全居中 */
width: 700px;
height: auto;
}
</style>
<script>
function preloadImages() {
for (var i = 0; i < 8; i++) {
var img = new Image();
img.src = `./static/png/${i + 1}_crop.png`;
}
}
preloadImages();
const angleDisplay = document.getElementById('angleDisplay');
const main = document.querySelectorAll('.main');
for (var i = 0; i < main.length; i++) {
main[i].style.display = 'none';
}
main[0].style.display = 'block';
const arr = [0, 45, 90, 135, 180, 225, 270, 315, 360];
document.addEventListener("mousemove", (event) => {
// 获取鼠标位置
const mouseX = event.clientX;
const mouseY = event.clientY;
// 计算中心点
const centerX = window.innerWidth / 2 - 90;
const centerY = window.innerHeight / 2 - 100;
// 计算角度
const angleRad = Math.atan2(mouseY - centerY, mouseX - centerX);
const angleDeg = (angleRad * (360 / Math.PI) + 360)/2;
// 显示角度
var ans = 0;
for(var i = 0; i < arr.length; i++){
if(angleDeg >= arr[i]){
ans = i;
}
}
for (var i = 0; i < main.length; i++) {
main[i].style.display = 'none';
}
main[ans].style.display = 'block';
angleDisplay.textContent = `./static/png/${ans + 1}_crop.png center: ${centerX}, ${centerY} mouse: ${mouseX}, ${mouseY} Angle: ${angleDeg.toFixed(2)}°`;
});
</script>
</html>