JSFiddle - React, Tailwind, and code Playground

by realhunts

HTML

<script src="http://threejs.org/build/three.min.js"></script>
<script src="http://threejs.org/examples/js/controls/OrbitControls.js"></script>

JavaScript

// a basic three.js scene

var container, renderer, scene, camera, controls;

init();
animate();

function init() {

    // renderer
    renderer = new THREE.WebGLRenderer({
        antialias: false
    });
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.setClearColor(0xccccff);
    container = document.createElement('div');
    document.body.appendChild(container);
    container.appendChild(renderer.domElement);

    // scene
    scene = new THREE.Scene();

    // camera
    camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 10000);
    camera.position.set(0, 200, 800);
    camera.lookAt(scene.position);

    // (camera) controls
    // mouse controls: left button to rotate, 
    //    mouse wheel to zoom, right button to pan
    controls = new THREE.OrbitControls(camera, renderer.domElement);

    // light    
    var light = new THREE.PointLight(0xffffff);
    light.position.set(100, 250, 250);
    scene.add(light);

    // mesh
  const geometry = new THREE.BufferGeometry();
// create a simple square shape. We duplicate the top left and bottom right
// vertices because each vertex needs to appear once per triangle.


/* var f32 = new Float32Array(10);
f32[0] = 100; */
const MAX_POINTS = 500;

var pos = [
    -1.0, -1.0,  1.0,
     1.0, -1.0,  1.0,
     1.0,  1.0,  1.0,

     1.0,  1.0,  1.0,
    -1.0,  1.0,  1.0,
    -1.0, -1.0,  1.0,
    
    
    	.5,  1.0,  1.0,
       .8,  1.0,  1.0,
       -1.0, -1.0,  1.0
      
  ]

const vertices = new Float32Array(MAX_POINTS * 3);



for(var i = 0; i<pos.length; i++){
vertices[i] = pos[i];

}
console.log(vertices.length, pos.length)
// itemSize = 3 because there are 3 values (components) per vertex
geometry.setAttribute( 'position', new THREE.BufferAttribute( vertices, 3 ) );
const material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
const mesh = new THREE.Mesh( geometry, material );

mesh.scale.set(100, 100,...