JSFiddle - React, Tailwind, and code Playground

HTML

<script type="importmap">
  {
  	"imports": {
  		"three": "https://unpkg.com/three@0.177.0/build/three.webgpu.js",
  		"orbitControls": "https://unpkg.com/three@0.177.0/examples/jsm/controls/OrbitControls.js",			
			"rapier": "https://poseidonenergy.github.io/RapierJsPublishRepo/no-object-creation/rapier.mjs"
  	}
  }
</script>
<div id="overlayContainer">
	<button id="testButton">Run Benchmark</button>
  <div id="infoDiv1"></div>
  <div id="infoDiv2" style="display:none;"></div>
</div>

CSS

* {
  margin: 0;
  border: 0;
  padding: 0;
  line-height: 1;
}

html {
  height: 100%;
  overflow: hidden;
}

body {
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
  background-color: #808080;
  user-drag: none;
  -webkit-user-drag: none;
  user-select: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
}

#overlayContainer {
  font-family:
    "Segoe UI",
    "Lucida Grande",
    -apple-system,
    BlinkMacSystemFont,
    "Liberation Sans",
    sans-serif;
  font-size: 14px;
  position: absolute;
  z-index: 3;
  padding: 10px;
  box-sizing: content-box;
  background-color: rgba(0, 0, 0, 0.5);
  color: #ffffff;
}

#infoDiv1 {
  margin-top: 10px;
  min-width: 40ch;
  min-height: 1lh;
}

#infoDiv2 {
  margin-top: 10px;
  min-width: 40ch;
  min-height: 1lh;
}

#testButton {
  display: block;
  background-clip: padding-box;
  border-width: 2px;
  border-style: solid;
  border-color: rgba(0, 0, 0, 0.5);
  padding: 5px;
  cursor: pointer;
}

.click-through {
  &,
  & * {
    pointer-events: none;
  }
}

table {
  display: table;
  width: 100%;
  table-layout: auto;
  border-collapse: collapse;
  border-spacing: 0;
  empty-cells: show;
}

tr.top-border {
  border-top-width: 2px;
  border-style: solid;
}

tr,
td,
th {
  vertical-align: middle;
}

JavaScript

import * as THREE from "three";
import * as RAPIER from "rapier";
import { OrbitControls } from "orbitControls";

const infoDiv1 = document.getElementById("infoDiv1");
const infoDiv2 = document.getElementById("infoDiv2");
const testButton = document.getElementById("testButton");
const physicsTickDelayMs = 16;
const groundDimensions = [10, 1, 10];
const groundPosition = [0, -1, 0];
const groundRestitution = 0.3;
const ceilingHeight = 10;
const ballRadius = 0.5;
const ballRestitution = 0.3;
const ballStartPos = { x: 0, y: 5, z: 0 };

async function onButtonClick(world, rigidBody) {
  const rigidBodies = 1000;
  const fps = 60;
  const originalBenchmark = await new Promise((resolve) => {
    let c = 0;
    let seconds = 0;
    doThing();
    function doThing() {
      if (++c < fps) {
        const t0 = performance.now();
        for (let i = 0; i < rigidBodies; i++) {
          let pos = rigidBody.translationOriginal();
          let rot = rigidBody.rotationOriginal();
        }
        seconds += (performance.now() - t0) / 1000;
        setTimeout(doThing, 0);
      } else {
        resolve(seconds);
      }
    }
  });
  const newBenchmark = await new Promise((resolve) => {
    let c = 0;
    let seconds = 0;
    const positionBuffer = {x:0,y:0,z:0};
    const rotationBuffer = {x:0,y:0,z:0,w:0};
    doThing();
    function doThing() {
      if (++c < fps) {
        const t0 = performance.now();
        for (let i = 0; i < rigidBodies; i++) {
          rigidBody.translation(positionBuffer);
          rigidBody.rotation(rotationBuffer);
        }
        seconds += (performance.now() - t0) / 1000;
        setTimeout(doThing, 0);
      } else {
        resolve(seconds);
      }
    }
  });
  infoDiv1.innerHTML = `
  Results after calling translation()<br/>
  and rotation() on each rigid body<br/>
  at ${fps} FPS, with ${rigidBodies} rigid bodies:<br/><br/>
  <table style="width:0.01%;">
  <tr>
  <td...