leumas-private-shared/src/Components/Backgrounds/Snowfall.jsx

Private React JSX Package For Leumas Shared Components, Headers, Footers, Asides, Login Pages, API Key Manager and much more. Styles and everything reusable to avoid DRY code across all of our subdomains

import React, { useEffect } from 'react';
import { styled } from '@mui/system';

const SnowfallWrapper = styled('div')`
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: transparent;
  overflow: hidden;
`;

const SnowfallBackground = ({ children }) => {
  useEffect(() => {
    const canvas = document.getElementById('snowfallCanvas');
    const ctx = canvas.getContext('2d');
    const snowflakes = [];

    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;

    function Snowflake(x, y) {
      this.x = x;
      this.y = y;
      this.size = Math.random() * 5 + 2;
      this.speed = Math.random() * 3 + 1;
      this.opacity = Math.random() * 0.5 + 0.5;
      this.angle = Math.random() * Math.PI * 2;
    }

    Snowflake.prototype.update = function() {
      this.y += this.speed;
      this.x += Math.sin(this.angle) * 2;
      if (this.y > canvas.height) {
        this.y = 0;
        this.x = Math.random() * canvas.width;
      }
    };

    Snowflake.prototype.draw = function() {
      ctx.beginPath();
      ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2);
      ctx.fillStyle = `rgba(255, 255, 255, ${this.opacity})`;
      ctx.fill();
    };

    function loop() {
      requestAnimationFrame(loop);

      ctx.clearRect(0, 0, canvas.width, canvas.height);

      let i = snowflakes.length;
      while (i--) {
        snowflakes[i].update();
        snowflakes[i].draw();
      }
    }

    function createSnowflakes() {
      let snowflakeCount = 100;
      while (snowflakeCount--) {
        snowflakes.push(new Snowflake(Math.random() * canvas.width, Math.random() * canvas.height));
      }
    }

    createSnowflakes();
    loop();
  }, []);

  return (
    <SnowfallWrapper>
      <canvas id="snowfallCanvas"></canvas>
      {children}
    </SnowfallWrapper>
  );
};

export default SnowfallBackground;