3D Bubble in JavaScript

// Seeded PRNG so the bubbles are identical on every load (stable snapshots).
var __seed = 0x3d0b7e21
function rand() {
  __seed |= 0
  __seed = (__seed + 0x6d2b79f5) | 0
  var t = Math.imul(__seed ^ (__seed >>> 15), 1 | __seed)
  t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t
  return ((t ^ (t >>> 14)) >>> 0) / 4294967296
}

// Each point is [date, conversionRate %, impressions]. The third value drives
// the bubble size, so a bigger bubble = more impressions that day.
function generateData(baseval, count, yrange, zrange) {
  var series = []
  for (var i = 0; i < count; i++) {
    var y = Math.floor(rand() * (yrange.max - yrange.min + 1)) + yrange.min
    var z = Math.floor(rand() * (zrange.max - zrange.min + 1)) + zrange.min
    series.push([baseval, y, z])
    baseval += 86400000
  }
  return series
}

var options = {
  series: [
    {
      name: 'Search',
      data: generateData(
        new Date('01 Jun 2024 GMT').getTime(),
        20,
        { min: 35, max: 60 },
        { min: 40, max: 75 },
      ),
    },
    {
      name: 'Social',
      data: generateData(
        new Date('01 Jun 2024 GMT').getTime(),
        20,
        { min: 20, max: 45 },
        { min: 30, max: 70 },
      ),
    },
    {
      name: 'Email',
      data: generateData(
        new Date('01 Jun 2024 GMT').getTime(),
        20,
        { min: 10, max: 30 },
        { min: 15, max: 45 },
      ),
    },
    {
      name: 'Display',
      data: generateData(
        new Date('01 Jun 2024 GMT').getTime(),
        20,
        { min: 5, max: 25 },
        { min: 20, max: 60 },
      ),
    },
  ],
  chart: {
    height: 350,
    type: 'bubble',
  },
  dataLabels: {
    enabled: false,
  },
  fill: {
    type: 'gradient',
  },
  title: {
    text: 'Channel Performance Over Time',
  },
  subtitle: {
    text: 'Bubble size = daily impressions',
  },
  xaxis: {
    tickAmount: 12,
    type: 'datetime',
    labels: {
      rotate: 0,
    },
  },
  yaxis: {
    max: 70,
    title: {
      text: 'Conversion Rate (%)',
    },
  },
  theme: {
    palette: 'palette2',
  },
}

var chart = new ApexCharts(document.querySelector('#chart'), options)
chart.render()