<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>棱镜粒子飞出动画特效</title>
<style>
body {
margin: 0;
overflow: hidden;
background-color: #000;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
// 设置画布大小为窗口大小
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
// 粒子数组
const particles = [];
const particleCount = 150;
// 颜色数组 - 棱镜效果的颜色
const colors = [
'#FF0000', '#FF7F00', '#FFFF00',
'#00FF00', '#0000FF', '#4B0082', '#9400D3'
];
// 粒子类
class Particle {
constructor() {
this.reset();
this.radius = Math.random() * 2 + 1;
}
reset() {
this.x = canvas.width / 2;
this.y = canvas.height / 2;
this.color = colors[Math.floor(Math.random() * colors.length)];
// 随机角度和速度
const angle = Math.random() * Math.PI * 2;
const speed = Math.random() * 5 + 1;
this.vx = Math.cos(angle) * speed;
this.vy = Math.sin(angle) * speed;
// 生命周期
this.life = 0;
this.maxLife = Math.random() * 100 + 100;
}
update() {
this.x += this.vx;
this.y += this.vy;
// 增加阻力效果
this.vx *= 0.98;
this.vy *= 0.98;
this.life++;
// 如果粒子生命周期结束，重置它
if (this.life >= this.maxLife ||
this.x < 0 || this.x > canvas.width ||
this.y < 0 || this.y > canvas.height) {
this.reset();
}
}
draw() {
ctx.beginPath();
ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
ctx.fillStyle = this.color;
ctx.fill();
// 添加发光效果
ctx.shadowBlur = 10;
ctx.shadowColor = this.color;
}
}
// 初始化粒子
for (let i = 0; i < particleCount; i++) {
particles.push(new Particle());
// 让粒子初始位置稍微分散
particles[i].x += (Math.random() - 0.5) * 50;
particles[i].y += (Math.random() - 0.5) * 50;
}
// 动画循环
function animate() {
// 清除画布，使用半透明黑色实现拖尾效果
ctx.fillStyle = 'rgba(0, 0, 0, 0.1)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
// 更新并绘制所有粒子
particles.forEach(particle => {
particle.update();
particle.draw();
});
requestAnimationFrame(animate);
}
// 开始动画
animate();
// 窗口大小改变时重置画布大小
window.addEventListener('resize', () => {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
});
// 鼠标移动时改变粒子方向
window.addEventListener('mousemove', (e) => {
particles.forEach(particle => {
const dx = e.clientX - particle.x;
const dy = e.clientY - particle.y;
const distance = Math.sqrt(dx * dx + dy * dy);
if (distance < 100) {
const forceDirectionX = dx / distance;
const forceDirectionY = dy / distance;
const force = (100 - distance) / 50;
particle.vx = -forceDirectionX * force;
particle.vy = -forceDirectionY * force;
}
});
});
</script>
<div style="position: fixed; bottom: 10px; right: 10px; color: white; font-family: Arial;">
</div>
</body>
</html>
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