You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
190 lines
5.7 KiB
190 lines
5.7 KiB
2 years ago
|
<!-- Licensed under a BSD license. See license.html for license -->
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
||
|
|
<title>Three.js - Load .GLTF - Dump Scenegraph to Console</title>
|
||
|
|
<style>
|
||
|
|
html, body {
|
||
|
|
margin: 0;
|
||
|
|
height: 100%;
|
||
|
|
}
|
||
|
|
#c {
|
||
|
|
width: 100%;
|
||
|
|
height: 100%;
|
||
|
|
display: block;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<canvas id="c"></canvas>
|
||
|
|
</body>
|
||
|
|
<!-- 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": {
|
||
|
|
"three": "../../build/three.module.js",
|
||
|
|
"three/addons/": "../../examples/jsm/"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<script type="module">
|
||
|
|
import * as THREE from 'three';
|
||
|
|
import {OrbitControls} from 'three/addons/controls/OrbitControls.js';
|
||
|
|
import {GLTFLoader} from 'three/addons/loaders/GLTFLoader.js';
|
||
|
|
|
||
|
|
function main() {
|
||
|
|
const canvas = document.querySelector('#c');
|
||
|
|
const renderer = new THREE.WebGLRenderer({canvas});
|
||
|
|
renderer.outputEncoding = THREE.sRGBEncoding;
|
||
|
|
|
||
|
|
const fov = 45;
|
||
|
|
const aspect = 2; // the canvas default
|
||
|
|
const near = 0.1;
|
||
|
|
const far = 100;
|
||
|
|
const camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
|
||
|
|
camera.position.set(0, 10, 20);
|
||
|
|
|
||
|
|
const controls = new OrbitControls(camera, canvas);
|
||
|
|
controls.target.set(0, 5, 0);
|
||
|
|
controls.update();
|
||
|
|
|
||
|
|
const scene = new THREE.Scene();
|
||
|
|
scene.background = new THREE.Color('black');
|
||
|
|
|
||
|
|
{
|
||
|
|
const planeSize = 40;
|
||
|
|
|
||
|
|
const loader = new THREE.TextureLoader();
|
||
|
|
const texture = loader.load('resources/images/checker.png');
|
||
|
|
texture.wrapS = THREE.RepeatWrapping;
|
||
|
|
texture.wrapT = THREE.RepeatWrapping;
|
||
|
|
texture.magFilter = THREE.NearestFilter;
|
||
|
|
const repeats = planeSize / 2;
|
||
|
|
texture.repeat.set(repeats, repeats);
|
||
|
|
|
||
|
|
const planeGeo = new THREE.PlaneGeometry(planeSize, planeSize);
|
||
|
|
const planeMat = new THREE.MeshPhongMaterial({
|
||
|
|
map: texture,
|
||
|
|
side: THREE.DoubleSide,
|
||
|
|
});
|
||
|
|
const mesh = new THREE.Mesh(planeGeo, planeMat);
|
||
|
|
mesh.rotation.x = Math.PI * -.5;
|
||
|
|
scene.add(mesh);
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const skyColor = 0xB1E1FF; // light blue
|
||
|
|
const groundColor = 0xB97A20; // brownish orange
|
||
|
|
const intensity = 0.6;
|
||
|
|
const light = new THREE.HemisphereLight(skyColor, groundColor, intensity);
|
||
|
|
scene.add(light);
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const color = 0xFFFFFF;
|
||
|
|
const intensity = 0.8;
|
||
|
|
const light = new THREE.DirectionalLight(color, intensity);
|
||
|
|
light.position.set(5, 10, 2);
|
||
|
|
scene.add(light);
|
||
|
|
scene.add(light.target);
|
||
|
|
}
|
||
|
|
|
||
|
|
function frameArea(sizeToFitOnScreen, boxSize, boxCenter, camera) {
|
||
|
|
const halfSizeToFitOnScreen = sizeToFitOnScreen * 0.5;
|
||
|
|
const halfFovY = THREE.MathUtils.degToRad(camera.fov * .5);
|
||
|
|
const distance = halfSizeToFitOnScreen / Math.tan(halfFovY);
|
||
|
|
// compute a unit vector that points in the direction the camera is now
|
||
|
|
// in the xz plane from the center of the box
|
||
|
|
const direction = (new THREE.Vector3())
|
||
|
|
.subVectors(camera.position, boxCenter)
|
||
|
|
.multiply(new THREE.Vector3(1, 0, 1))
|
||
|
|
.normalize();
|
||
|
|
|
||
|
|
// move the camera to a position distance units way from the center
|
||
|
|
// in whatever direction the camera was from the center already
|
||
|
|
camera.position.copy(direction.multiplyScalar(distance).add(boxCenter));
|
||
|
|
|
||
|
|
// pick some near and far values for the frustum that
|
||
|
|
// will contain the box.
|
||
|
|
camera.near = boxSize / 100;
|
||
|
|
camera.far = boxSize * 100;
|
||
|
|
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
|
||
|
|
// point the camera to look at the center of the box
|
||
|
|
camera.lookAt(boxCenter.x, boxCenter.y, boxCenter.z);
|
||
|
|
}
|
||
|
|
|
||
|
|
function dumpObject(obj, lines = [], isLast = true, prefix = '') {
|
||
|
|
const localPrefix = isLast ? '└─' : '├─';
|
||
|
|
lines.push(`${prefix}${prefix ? localPrefix : ''}${obj.name || '*no-name*'} [${obj.type}]`);
|
||
|
|
const newPrefix = prefix + (isLast ? ' ' : '│ ');
|
||
|
|
const lastNdx = obj.children.length - 1;
|
||
|
|
obj.children.forEach((child, ndx) => {
|
||
|
|
const isLast = ndx === lastNdx;
|
||
|
|
dumpObject(child, lines, isLast, newPrefix);
|
||
|
|
});
|
||
|
|
return lines;
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const gltfLoader = new GLTFLoader();
|
||
|
|
gltfLoader.load('resources/models/cartoon_lowpoly_small_city_free_pack/scene.gltf', (gltf) => {
|
||
|
|
const root = gltf.scene;
|
||
|
|
scene.add(root);
|
||
|
|
console.log(dumpObject(root).join('\n')); // eslint-disable-line
|
||
|
|
|
||
|
|
// compute the box that contains all the stuff
|
||
|
|
// from root and below
|
||
|
|
const box = new THREE.Box3().setFromObject(root);
|
||
|
|
|
||
|
|
const boxSize = box.getSize(new THREE.Vector3()).length();
|
||
|
|
const boxCenter = box.getCenter(new THREE.Vector3());
|
||
|
|
|
||
|
|
// set the camera to frame the box
|
||
|
|
frameArea(boxSize * 0.5, boxSize, boxCenter, camera);
|
||
|
|
|
||
|
|
// update the Trackball controls to handle the new size
|
||
|
|
controls.maxDistance = boxSize * 10;
|
||
|
|
controls.target.copy(boxCenter);
|
||
|
|
controls.update();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function resizeRendererToDisplaySize(renderer) {
|
||
|
|
const canvas = renderer.domElement;
|
||
|
|
const width = canvas.clientWidth;
|
||
|
|
const height = canvas.clientHeight;
|
||
|
|
const needResize = canvas.width !== width || canvas.height !== height;
|
||
|
|
if (needResize) {
|
||
|
|
renderer.setSize(width, height, false);
|
||
|
|
}
|
||
|
|
return needResize;
|
||
|
|
}
|
||
|
|
|
||
|
|
function render() {
|
||
|
|
|
||
|
|
if (resizeRendererToDisplaySize(renderer)) {
|
||
|
|
const canvas = renderer.domElement;
|
||
|
|
camera.aspect = canvas.clientWidth / canvas.clientHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
}
|
||
|
|
|
||
|
|
renderer.render(scene, camera);
|
||
|
|
|
||
|
|
requestAnimationFrame(render);
|
||
|
|
}
|
||
|
|
|
||
|
|
requestAnimationFrame(render);
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|
||
|
|
</script>
|
||
|
|
</html>
|