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webgl_helpers.html
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webgl_helpers.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - helpers</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info">
<a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> - helpers
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import { GLTFLoader } from 'v3d/addons/loaders/GLTFLoader.js';
import { VertexNormalsHelper } from 'v3d/addons/helpers/VertexNormalsHelper.js';
import { VertexTangentsHelper } from 'v3d/addons/helpers/VertexTangentsHelper.js';
let scene, renderer;
let camera, light;
let vnh;
let vth;
init();
animate();
function init() {
renderer = new v3d.WebGLRenderer();
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
//
camera = new v3d.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.z = 400;
scene = new v3d.Scene();
light = new v3d.PointLight();
light.position.set(200, 100, 150);
scene.add(light);
scene.add(new v3d.PointLightHelper(light, 15));
const gridHelper = new v3d.GridHelper(400, 40, 0x0000ff, 0x808080);
gridHelper.position.y = -150;
gridHelper.position.x = -150;
scene.add(gridHelper);
const polarGridHelper = new v3d.PolarGridHelper(200, 16, 8, 64, 0x0000ff, 0x808080);
polarGridHelper.position.y = -150;
polarGridHelper.position.x = 200;
scene.add(polarGridHelper);
const loader = new GLTFLoader();
loader.load('models/gltf/LeePerrySmith/LeePerrySmith.glb', function(gltf) {
const mesh = gltf.scene.children[0];
mesh.geometry.computeTangents(); // generates bad data due to degenerate UVs
const group = new v3d.Group();
group.scale.multiplyScalar(50);
scene.add(group);
// To make sure that the matrixWorld is up to date for the boxhelpers
group.updateMatrixWorld(true);
group.add(mesh);
vnh = new VertexNormalsHelper(mesh, 5);
scene.add(vnh);
vth = new VertexTangentsHelper(mesh, 5);
scene.add(vth);
scene.add(new v3d.BoxHelper(mesh));
const wireframe = new v3d.WireframeGeometry(mesh.geometry);
let line = new v3d.LineSegments(wireframe);
line.material.depthTest = false;
line.material.opacity = 0.25;
line.material.transparent = true;
line.position.x = 4;
group.add(line);
scene.add(new v3d.BoxHelper(line));
const edges = new v3d.EdgesGeometry(mesh.geometry);
line = new v3d.LineSegments(edges);
line.material.depthTest = false;
line.material.opacity = 0.25;
line.material.transparent = true;
line.position.x = -4;
group.add(line);
scene.add(new v3d.BoxHelper(line));
scene.add(new v3d.BoxHelper(group));
scene.add(new v3d.BoxHelper(scene));
});
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
const time = -performance.now() * 0.0003;
camera.position.x = 400 * Math.cos(time);
camera.position.z = 400 * Math.sin(time);
camera.lookAt(scene.position);
light.position.x = Math.sin(time * 1.7) * 300;
light.position.y = Math.cos(time * 1.5) * 400;
light.position.z = Math.cos(time * 1.3) * 300;
if (vnh) vnh.update();
if (vth) vth.update();
renderer.render(scene, camera);
}
</script>
</body>
</html>