JSFiddle - React, Tailwind, and code Playground

by colemande

HTML

<canvas id="canvas" width="500" height="500"></canvas> <br/>

Frame Rate: <span id="frame"></span>

CSS

/*Simple reset*/
* {margin: 0; padding: 0;}

body {
	/*You can use any kind of background here.*/
	background: #6b92b9;
    color:white;
}
#canvas {
	width:500px;
    height:500px;
    border:1px solid black;
}

JavaScript

//canvas init
	var canvas = document.getElementById("canvas");
	var ctx = canvas.getContext("2d");
    var fps  = document.getElementById('frame');
    var frames = 0;
	var delta = 0;
	//canvas dimensions
	canvas.width = 1500;
	canvas.height = 1500;
	
	//snowflake particles
	var mp = 10000; //max particles
	var particles = [];
	for(var i = 0; i < mp; i++)
	{
		particles.push({
			x: Math.random()*canvas.width, //x-coordinate
			y: Math.random()*canvas.height, //y-coordinate
			r: Math.random()*4+1, //radius
			d: Math.random()*mp //density
		})
	}
	
	//Lets draw the flakes
	function draw()
    {
        
        ctx.clearRect(0, 0, canvas.width, canvas.height);
		ctx.fillStyle = "rgba(255, 255, 255, 0.8)";
		ctx.beginPath();
		for(var i = 0; i < mp; i++)
		{
			var p = particles[i];
            ctx.fillRect(p.x,p.y,4,4);
		}
		ctx.fill();
		
	}

function frameFnc(){
            frames++;
        if(new Date().getTime() - delta > 1000){
            delta = new Date().getTime();
            fps.innerHTML = frames;
            frames = 0;
        }
}
	
	//Function to move the snowflakes
	//angle will be an ongoing incremental flag. Sin and Cos functions will be applied to it to create vertical and horizontal movements of the flakes
	var angle = 0;
	function update()
	{
		angle += 0.01;
		for(var i = 0; i < mp; i++)
		{
			var p = particles[i];
			p.y += Math.cos(angle+p.d) + 1 + p.r/2;
			p.x += Math.sin(angle) * 2;
			
			//Sending flakes back from the top when it exits
			//Lets make it a bit more organic and let flakes enter from the left and right also.
			if(p.x > canvas.width+5 || p.x < -5 || p.y > canvas.height)
			{
				if(i%3 > 0) //66.67% of the flakes
				{
					particles[i] = {x: Math.random()*canvas.width, y: -10, r: p.r, d: p.d};
				}
				else
				{
					//If the flake is exitting from the right
					if(Math.sin(angle) > 0)
					{
						//Enter from the left
						particles[i] = {x: -5, y: Math.random()*canvas.height, r: p.r, d:...