JSFiddle - React, Tailwind, and code Playground

by andrey90vs

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.2/TweenLite.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.2/easing/EasePack.min.js"></script>
<canvas id="demo-canvas"></canvas>
<div class="content"></div>

CSS

body,
html {
	background-color: black;
}

#demo-canvas {
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
}

.content {
	height: 2000px;
}

JavaScript

(function() {

    var width, height, canvas, ctx, points, target, animateHeader = true;

    // Main
    initHeader();
    initAnimation();
    addListeners();

    function initHeader() {
        width = window.innerWidth;
        height = window.innerHeight;
        target = {x: width/2, y: height/2};

        canvas = document.getElementById('demo-canvas');
        canvas.width = width;
        canvas.height = height;
        ctx = canvas.getContext('2d');

        // create points
        points = [];
        for(var x = 0; x < width; x = x + width/20) {
            for(var y = 0; y < height; y = y + height/20) {
                var px = x + Math.random()*width/20;
                var py = y + Math.random()*height/20;
                var p = {x: px, originX: px, y: py, originY: py };
                points.push(p);
            }
        }

        // for each point find the 5 closest points
        for(var i = 0; i < points.length; i++) {
            var closest = [];
            var p1 = points[i];
            for(var j = 0; j < points.length; j++) {
                var p2 = points[j]
                if(!(p1 == p2)) {
                    var placed = false;
                    for(var k = 0; k < 5; k++) {
                        if(!placed) {
                            if(closest[k] == undefined) {
                                closest[k] = p2;
                                placed = true;
                            }
                        }
                    }

                    for(var k = 0; k < 5; k++) {
                        if(!placed) {
                            if(getDistance(p1, p2) < getDistance(p1, closest[k])) {
                                closest[k] = p2;
                                placed = true;
                            }
                        }
                    }
                }
            }
            p1.closest = closest;
        }

        // assign a circle to each point
        for(var i in points) {
 ...