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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>粒子效果测试页面</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background: #0f172a;
}
#particle-canvas {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 1;
background: #0f172a;
}
.test-info {
position: fixed;
top: 20px;
left: 20px;
z-index: 100;
color: white;
font-family: monospace;
background: rgba(0,0,0,0.7);
padding: 15px;
border-radius: 8px;
}
</style>
</head>
<body>
<canvas id="particle-canvas"></canvas>
<div class="test-info">
<h3>粒子效果测试</h3>
<div id="status">正在初始化...</div>
<div id="particle-count">粒子数: 0</div>
<div id="canvas-size">Canvas尺寸: -</div>
</div>
<script>
(function() {
const statusDiv = document.getElementById('status');
const countDiv = document.getElementById('particle-count');
const sizeDiv = document.getElementById('canvas-size');
function updateStatus(msg) {
statusDiv.textContent = msg;
console.log('[Particle Test]', msg);
}
function updateCount(count) {
countDiv.textContent = `粒子数: ${count}`;
}
function updateSize(w, h) {
sizeDiv.textContent = `Canvas尺寸: ${w}x${h}`;
}
updateStatus('查找Canvas元素...');
const canvas = document.getElementById('particle-canvas');
if (!canvas) {
updateStatus('❌ Canvas元素未找到！');
return;
}
updateStatus('✅ Canvas元素找到');
updateStatus('获取2D上下文...');
const ctx = canvas.getContext('2d');
if (!ctx) {
updateStatus('❌ 无法获取2D上下文！');
return;
}
updateStatus('✅ 2D上下文获取成功');
let animationFrameId;
let width, height;
let particles = [];
const particleCount = 60;
const connectionDistance = 150;
const mouseDistance = 200;
let mouse = { x: null, y: null };
const resize = () => {
width = window.innerWidth;
height = window.innerHeight;
canvas.width = width;
canvas.height = height;
updateSize(width, height);
initParticles();
};
class Particle {
constructor() {
this.x = Math.random() * width;
this.y = Math.random() * height;
this.vx = (Math.random() - 0.5) * 0.5;
this.vy = (Math.random() - 0.5) * 0.5;
this.size = Math.random() * 2 + 1;
this.color = `rgba(${Math.random() * 50 + 100}, ${Math.random() * 100 + 155}, 255, ${Math.random() * 0.5 + 0.2})`;
}
update() {
this.x += this.vx;
this.y += this.vy;
if (this.x < 0 || this.x > width) this.vx *= -1;
if (this.y < 0 || this.y > height) this.vy *= -1;
if (mouse.x != null) {
let dx = mouse.x - this.x;
let dy = mouse.y - this.y;
let distance = Math.sqrt(dx * dx + dy * dy);
if (distance < mouseDistance && distance > 0) {
const forceDirectionX = dx / distance;
const forceDirectionY = dy / distance;
const force = (mouseDistance - distance) / mouseDistance;
this.vx += forceDirectionX * force * 0.6;
this.vy += forceDirectionY * force * 0.6;
}
}
// 限制速度
const maxSpeed = 2.0;
const speed = Math.sqrt(this.vx * this.vx + this.vy * this.vy);
if (speed > maxSpeed) {
this.vx = (this.vx / speed) * maxSpeed;
this.vy = (this.vy / speed) * maxSpeed;
}
}
draw() {
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
ctx.fillStyle = this.color;
ctx.fill();
}
}
const initParticles = () => {
particles = [];
for (let i = 0; i < particleCount; i++) {
particles.push(new Particle());
}
updateCount(particles.length);
updateStatus('✅ 粒子初始化完成');
};
const animate = () => {
ctx.clearRect(0, 0, width, height);
// 绘制连接线
for (let i = 0; i < particles.length; i++) {
for (let j = i + 1; j < particles.length; j++) {
let dx = particles[i].x - particles[j].x;
let dy = particles[i].y - particles[j].y;
let distance = Math.sqrt(dx * dx + dy * dy);
if (distance < connectionDistance) {
ctx.beginPath();
ctx.strokeStyle = `rgba(100, 200, 255, ${1 - distance / connectionDistance})`;
ctx.lineWidth = 0.5;
ctx.moveTo(particles[i].x, particles[i].y);
ctx.lineTo(particles[j].x, particles[j].y);
ctx.stroke();
}
}
}
// 更新和绘制粒子
particles.forEach(particle => {
particle.update();
particle.draw();
});
animationFrameId = requestAnimationFrame(animate);
};
const handleMouseMove = (e) => {
mouse.x = e.clientX || e.x;
mouse.y = e.clientY || e.y;
};
const handleMouseLeave = () => {
mouse.x = null;
mouse.y = null;
};
updateStatus('绑定事件监听器...');
window.addEventListener('resize', resize);
window.addEventListener('mousemove', handleMouseMove);
window.addEventListener('mouseleave', handleMouseLeave);
updateStatus('启动动画...');
resize();
animate();
updateStatus('✅ 动画已启动 - 应该能看到粒子效果了！');
})();
</script>
</body>
</html>
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