<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>鼠标粒子拖尾效果</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #000;
cursor: none;
}
canvas {
display: block;
}
.link {
position: fixed;
bottom: 10px;
right: 10px;
color: white;
font-family: Arial, sans-serif;
text-decoration: none;
z-index: 100;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
let particles = [];
const particleCount = 50;
const mouse = { x: null, y: null };
// 设置画布大小为窗口大小
function resizeCanvas() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
window.addEventListener('resize', resizeCanvas);
resizeCanvas();
// 鼠标移动事件
window.addEventListener('mousemove', (e) => {
mouse.x = e.clientX;
mouse.y = e.clientY;
});
// 鼠标离开窗口时
window.addEventListener('mouseout', () => {
mouse.x = null;
mouse.y = null;
});
// 粒子类
class Particle {
constructor() {
this.x = mouse.x || Math.random() * canvas.width;
this.y = mouse.y || Math.random() * canvas.height;
this.size = Math.random() * 5 + 1;
this.speedX = Math.random() * 3 - 1.5;
this.speedY = Math.random() * 3 - 1.5;
this.color = `hsl(${Math.random() * 360}, 100%, 50%)`;
this.opacity = Math.random() * 0.6 + 0.4;
}
update() {
if (mouse.x && mouse.y) {
const dx = mouse.x - this.x;
const dy = mouse.y - this.y;
const distance = Math.sqrt(dx * dx + dy * dy);
if (distance < 100) {
this.x += dx * 0.05;
this.y += dy * 0.05;
} else {
this.x += this.speedX;
this.y += this.speedY;
}
} else {
this.x += this.speedX;
this.y += this.speedY;
}
// 边界检查
if (this.x > canvas.width || this.x < 0) {
this.speedX = -this.speedX;
}
if (this.y > canvas.height || this.y < 0) {
this.speedY = -this.speedY;
}
// 随机改变大小和透明度
this.size = Math.max(0.5, this.size - 0.01);
this.opacity = Math.max(0.1, this.opacity - 0.002);
}
draw() {
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
ctx.fillStyle = this.color;
ctx.globalAlpha = this.opacity;
ctx.fill();
ctx.globalAlpha = 1;
}
}
// 初始化粒子
function init() {
particles = [];
for (let i = 0; i < particleCount; i++) {
particles.push(new Particle());
}
}
// 动画循环
function animate() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
// 更新和绘制粒子
for (let i = 0; i < particles.length; i++) {
particles[i].update();
particles[i].draw();
// 如果粒子太小或太透明，替换新的粒子
if (particles[i].size <= 0.5 || particles[i].opacity <= 0.1) {
particles.splice(i, 1);
particles.push(new Particle());
}
}
// 绘制粒子间的连线
drawConnections();
requestAnimationFrame(animate);
}
// 绘制粒子间的连线
function drawConnections() {
for (let i = 0; i < particles.length; i++) {
for (let j = i + 1; j < particles.length; j++) {
const dx = particles[i].x - particles[j].x;
const dy = particles[i].y - particles[j].y;
const distance = Math.sqrt(dx * dx + dy * dy);
if (distance < 100) {
ctx.beginPath();
ctx.strokeStyle = particles[i].color;
ctx.globalAlpha = 0.5 * (1 - distance / 100);
ctx.lineWidth = 0.5;
ctx.moveTo(particles[i].x, particles[i].y);
ctx.lineTo(particles[j].x, particles[j].y);
ctx.stroke();
ctx.globalAlpha = 1;
}
}
}
}
init();
animate();
</script>
</body>
</html>
扫一扫
574
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
