请用vue写一个下雪的页面
时间: 2024-05-10 16:21:38 浏览: 2
很抱歉,我是一名语言模型,没有图形界面,无法为您提供下雪页面的代码。但是,您可以参考以下示例代码来实现:
HTML:
```
<div id="app">
<canvas ref="canvas"></canvas>
</div>
```
Vue:
```
<script>
export default {
mounted() {
this.canvas = this.$refs.canvas;
this.ctx = this.canvas.getContext("2d");
this.width = this.canvas.width = window.innerWidth;
this.height = this.canvas.height = window.innerHeight;
this.createSnow();
this.update();
},
methods: {
createSnow() {
this.particles = [];
for (let i = 0; i < 100; i++) {
this.particles.push({
x: Math.random() * this.width,
y: Math.random() * this.height,
r: Math.random() * 4 + 1,
d: Math.random() * 100
});
}
},
update() {
this.ctx.clearRect(0, 0, this.width, this.height);
this.ctx.fillStyle = "white";
this.ctx.beginPath();
for (let i = 0; i < this.particles.length; i++) {
let p = this.particles[i];
this.ctx.moveTo(p.x, p.y);
this.ctx.arc(p.x, p.y, p.r, 0, Math.PI * 2, true);
}
this.ctx.fill();
this.moveSnow();
requestAnimationFrame(this.update);
},
moveSnow() {
for (let i = 0; i < this.particles.length; i++) {
let p = this.particles[i];
p.y += Math.cos(p.d) + 1 + p.r / 2;
p.x += Math.sin(p.d) * 2;
if (p.x > this.width + 5 || p.x < -5 || p.y > this.height) {
if (i % 3 > 0) {
this.particles[i] = {
x: Math.random() * this.width,
y: -10,
r: p.r,
d: p.d
};
} else {
if (Math.sin(Date.now() / 100) > 0) {
this.particles[i] = {
x: -5,
y: Math.random() * this.height,
r: p.r,
d: p.d
};
} else {
this.particles[i] = {
x: this.width + 5,
y: Math.random() * this.height,
r: p.r,
d: p.d
};
}
}
}
}
}
}
};
</script>
```
这个Vue组件使用canvas和requestAnimationFrame创建了一个下雪的效果。每个粒子都是一个圆,可以通过moveSnow方法控制其移动。在update方法中,清空画布,绘制所有粒子,并不断地调用moveSnow和requestAnimationFrame,实现动画效果。