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161
src/views/index/index.vue
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161
src/views/index/index.vue
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<script setup>
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import { onMounted, onBeforeUnmount, ref } from 'vue'
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const canvasRef = ref(null)
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canvasRef.value = undefined;
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let animationId = null
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onMounted(() => {
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const canvas = canvasRef.value
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if (!canvas) return
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const ctx = canvas.getContext('2d')
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const resize = () => {
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canvas.width = window.innerWidth
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canvas.height = window.innerHeight
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}
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resize()
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window.addEventListener('resize', resize)
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// 圆点粒子数组
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const particles = []
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const PARTICLE_COUNT = 60
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// 创建单个粒子
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const createParticle = (randomY = true) => {
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return {
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x: Math.random() * canvas.width,
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y: randomY ? Math.random() * canvas.height : canvas.height + 20,
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radius: Math.random() * 8 + 2,
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speedY: Math.random() * 1.2 + 0.3,
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speedX: (Math.random() - 0.5) * 0.5,
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opacity: Math.random() * 0.5 + 0.15,
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// 用于呼吸/交融效果的相位
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phase: Math.random() * Math.PI * 2,
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phaseSpeed: Math.random() * 0.02 + 0.005,
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}
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}
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// 初始化粒子
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for (let i = 0; i < PARTICLE_COUNT; i++) {
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particles.push(createParticle(true))
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}
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const animate = () => {
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ctx.clearRect(0, 0, canvas.width, canvas.height)
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for (let i = particles.length - 1; i >= 0; i--) {
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const p = particles[i]
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// 更新位置
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p.y -= p.speedY
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p.x += p.speedX
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p.phase += p.phaseSpeed
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// 呼吸效果:透明度和大小微微波动
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const breathe = Math.sin(p.phase) * 0.3 + 1
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const currentRadius = p.radius * breathe
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const currentOpacity = p.opacity * (0.7 + Math.sin(p.phase) * 0.3)
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// 绘制带径向渐变的圆点(交融效果)
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const gradient = ctx.createRadialGradient(p.x, p.y, 0, p.x, p.y, currentRadius * 2.5)
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gradient.addColorStop(0, `rgba(220, 38, 38, ${currentOpacity})`)
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gradient.addColorStop(0.4, `rgba(239, 68, 68, ${currentOpacity * 0.6})`)
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gradient.addColorStop(1, `rgba(248, 113, 113, 0)`)
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ctx.beginPath()
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ctx.arc(p.x, p.y, currentRadius * 2.5, 0, Math.PI * 2)
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ctx.fillStyle = gradient
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ctx.fill()
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// 核心实心圆点
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ctx.beginPath()
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ctx.arc(p.x, p.y, currentRadius, 0, Math.PI * 2)
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ctx.fillStyle = `rgba(220, 38, 38, ${currentOpacity * 0.9})`
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ctx.fill()
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// 超出屏幕顶部后重置到底部
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if (p.y + p.radius * 3 < 0) {
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particles[i] = createParticle(false)
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}
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}
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animationId = requestAnimationFrame(animate)
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}
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animate()
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})
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onBeforeUnmount(() => {
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if (animationId) cancelAnimationFrame(animationId)
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window.removeEventListener('resize', () => {})
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})
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</script>
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<template>
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<div class="main_div">
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<!-- 背景粒子动画层 -->
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<canvas ref="canvasRef" class="particle-canvas"></canvas>
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<div class="title_div">
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<h1 class="red head_text">Error Page</h1>
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<h1 class="red head_text">错误页面</h1>
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<div class="message_div">
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<div class="text_black">
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<p>Sorry, the page you visited does not exist or is abnormal.</p>
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<p>抱歉,您访问的页面不存在或异常。</p>
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</div>
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</div>
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</div>
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</div>
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</template>
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<style scoped>
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.main_div {
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display: flex;
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width: 100%;
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height: 98vh;
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position: relative;
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overflow: hidden;
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}
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.particle-canvas {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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z-index: 0;
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pointer-events: none;
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}
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.message_div {
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display: flex;
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margin-top: 100px;
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}
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.red {
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color: red;
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}
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.text_black {
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color: black;
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text-align: center;
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font-size: 20px;
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letter-spacing: 1px;
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line-height: 30px;
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}
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.head_text {
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text-align: center;
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font-size: 3em;
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letter-spacing: 1px;
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line-height: 40px;
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}
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.title_div {
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display: initial;
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margin: 50px auto;
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position: relative;
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z-index: 1;
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}
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</style>
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