big O - O(N2)

Learning about more about Big O notation today and came across this post by ParanoidAgnostic and wanted to attempt to port the Java to Javascript & D3.

credit to this block for the color approach.

Built with blockbuilder.org

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v5.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
    
    const width = window.innerWidth;
    const height = window.innerHeight;
    
    const tileX = 10; // total per row
    const tileY = 10; // total per column
    const tileSize = 50;
    
    const circleArray = [];
    
    const greens = d3.scaleOrdinal(d3.schemeGreens[3]);
    // const colorArray = [d3.schemeCategory10, d3.schemeAccent];

const colorScheme = greens; // multi colour is colorArray 
    
   const getRandFill = () => {
     const ranIndex = Math.floor(Math.random() * 10);
     return colorScheme(ranIndex);
   }

const processLayer = (z) => {
    	for(y=0;y<tileY;y++) {
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processLayer(tileSize)

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https://d3js.org/d3.v5.min.js