Load models directly from a Three.js loader (skinned mesh in this instance).
import {
AnimationMixer,
DirectionalLight,
Clock,
Color,
Fog,
HemisphereLight,
Mesh,
MeshPhongMaterial,
PlaneGeometry,
Vector3,
WebGLRenderer,
} from 'three';
import { MapControls } from 'three/examples/jsm/controls/MapControls.js';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
import { clone } from 'three/examples/jsm/utils/SkeletonUtils.js';
import Instance from '@giro3d/giro3d/core/Instance.js';
import Inspector from '@giro3d/giro3d/gui/Inspector.js';
const viewerDiv = document.getElementById('viewerDiv');
// we can customize the renderer THREE will use
// Here, this is necessary to render the glb correctly.
// Giro3D will handle:
// - adding it in the DOM within viewerDiv
// - resizing it when the window or viewerDiv is resized
const renderer = new WebGLRenderer({ antialias: true });
renderer.shadowMap.enabled = true;
// Create the Giro3D instance
const instance = new Instance(viewerDiv, { crs: 'EPSG:3857', renderer: { renderer } });
const camera = instance.camera.camera3D;
// Creates controls
const controls = new MapControls(instance.camera.camera3D, instance.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.2;
// and setup our instance to use them.
instance.useTHREEControls(controls);
const clock = new Clock();
// we can access the THREE.js scene directly
instance.scene.background = new Color(0xa0a0a0);
instance.scene.fog = new Fog(0xa0a0a0, 10, 50);
// adding lights directly to scene is ok
const hemiLight = new HemisphereLight(0xffffff, 0x444444, 2);
hemiLight.position.set(0, 0, 20);
hemiLight.updateMatrixWorld();
instance.scene.add(hemiLight);
const dirLight = new DirectionalLight(0xffffff, 3);
dirLight.position.set(-3, 10, 10);
dirLight.castShadow = true;
dirLight.shadow.camera.top = 4;
dirLight.shadow.camera.bottom = -4;
dirLight.shadow.camera.left = -4;
dirLight.shadow.camera.right = 4;
dirLight.shadow.camera.near = 0.1;
dirLight.shadow.camera.far = 40;
instance.scene.add(dirLight);
instance.scene.add(dirLight.target);
dirLight.updateMatrixWorld();
// Let's now setup a "ground" to receive the shadows
const mesh = new Mesh(
new PlaneGeometry(200, 200),
new MeshPhongMaterial({ color: 0xcbcbcb, depthWrite: false }),
);
mesh.receiveShadow = true;
// Contrary to lights, every meshes should be added through `instance.add`, in order for Giro3D to
// be aware of them. Otherwise the objects will just disappear.
// For technical details, see how MainLoop.js calculates camera near and far.
instance.add(mesh);
// Let's load objects using one of the THREE loaders.
const loader = new GLTFLoader();
loader.load('https://threejs.org/examples/models/gltf/Soldier.glb', gltf => {
gltf.scene.traverse(object => {
if (object.isMesh) object.castShadow = true;
});
// this code is virtually identical to this example:
// https://threejs.org/examples/webgl_animation_multiple
const model1 = clone(gltf.scene);
const model2 = clone(gltf.scene);
const model3 = clone(gltf.scene);
const models = [model1, model2, model3];
const mixer1 = new AnimationMixer(model1);
const mixer2 = new AnimationMixer(model2);
const mixer3 = new AnimationMixer(model3);
const mixers = [mixer1, mixer2, mixer3];
mixer1.clipAction(gltf.animations[0]).play(); // idle
mixer2.clipAction(gltf.animations[1]).play(); // run
mixer3.clipAction(gltf.animations[3]).play(); // walk
model1.position.x = 1;
model1.rotation.x = Math.PI / 2;
model1.updateMatrixWorld();
model2.position.x = 0;
model2.rotation.x = Math.PI / 2;
model2.updateMatrixWorld();
model3.position.x = 2;
model3.rotation.x = Math.PI / 2;
model3.updateMatrixWorld();
// except for this part, we add directly to instance to make Giro3D aware of these models
instance.add(model1);
instance.add(model2);
instance.add(model3);
// let's move our camera and control target
// We add 1 to z to look at the waist. The 0, 0, 0 is located at the soldier's feet.
const lookAt = new Vector3(0, 0, 1).add(model1.position);
camera.position.set(2, 6, 3);
camera.lookAt(lookAt);
controls.target.copy(lookAt);
controls.saveState();
// you can hook yourself to event of the rendering loop.
instance.addEventListener('after-camera-update', () => {
const delta = clock.getDelta();
for (const mixer of mixers) {
mixer.update(delta);
}
for (const model of models) {
model.updateMatrixWorld();
instance.notifyChange(model);
}
});
instance.notifyChange();
let where = models;
document.getElementById('pick_source').addEventListener('change', e => {
const newMode = parseInt(e.target.value, 10);
if (newMode === 1) {
where = [model1];
} else if (newMode === 2) {
where = [model2];
} else if (newMode === 3) {
where = [model3];
} else {
where = models;
}
});
const formatter = new Intl.NumberFormat();
function format(point) {
return `x: ${formatter.format(point.x)}\n
y: ${formatter.format(point.y)}\n
z: ${formatter.format(point.z)}`;
}
instance.domElement.addEventListener('dblclick', e => {
const picked = instance.pickObjectsAt(e, { limit: 1, where });
if (picked.length === 0) {
document.getElementById('selectedDiv').innerText = 'No object found';
} else {
document.getElementById('selectedDiv').innerHTML = `
Picked ${picked[0].object.name} at:<br>
${format(picked[0].point)}!`;
}
});
});
Inspector.attach(document.getElementById('panelDiv'), instance);
<!doctype html>
<html lang="en">
<head>
<title>Three.js loaders</title>
<meta charset="UTF-8" />
<meta name="name" content="three_loader" />
<meta name="description" content="Load models directly from a Three.js loader (skinned mesh in this instance)." />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="icon" href="https://giro3d.org/images/favicon.svg" />
<link href="https://giro3d.org/assets/bootstrap-custom.css" rel="stylesheet" />
<script src="https://giro3d.org/assets/bootstrap.bundle.min.js"></script>
<link
rel="stylesheet"
type="text/css"
href="https://giro3d.org/latest/css/example.css"
/>
</head>
<body>
<div id="viewerDiv" class="m-0 p-0 w-100 h-100"></div>
<div id="panelDiv" class="position-absolute top-0 start-0 mh-100 overflow-auto"></div>
<div class="side-pane-with-status-bar">
<div class="card">
<div class="card-body">
<div class="input-group">
<label class="input-group-text" for="pick_source">Pick from</label>
<select class="form-select" id="pick_source">
<option value="0" selected>All models</option>
<option value="1">Vanguard idle</option>
<option value="3">Vanguard walking</option>
<option value="2">Vanguard running</option>
</select>
</div>
<div id="selectedDiv"></div>
</div>
</div>
</div>
<script type="module" src="index.js"></script>
<script>
/* activate popovers */
const popoverTriggerList = [].slice.call(
document.querySelectorAll('[data-bs-toggle="popover"]'),
);
popoverTriggerList.map(
// bootstrap is used as script in the template, disable warning about undef
// eslint-disable-next-line no-undef
popoverTriggerEl =>
new bootstrap.Popover(popoverTriggerEl, {
trigger: 'hover',
placement: 'left',
content: document.getElementById(
popoverTriggerEl.getAttribute('data-bs-content'),
).innerHTML,
html: true,
}),
);
</script>
</body>
</html>
{
"name": "three_loader",
"dependencies": {
"@giro3d/giro3d": "0.38.5"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}