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.
262 lines
7.9 KiB
262 lines
7.9 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 - WebXR - Point to Select w/Move</title>
|
||
|
|
<style>
|
||
|
|
html, body {
|
||
|
|
height: 100%;
|
||
|
|
margin: 0;
|
||
|
|
}
|
||
|
|
#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 {VRButton} from 'three/addons/webxr/VRButton.js';
|
||
|
|
|
||
|
|
function main() {
|
||
|
|
const canvas = document.querySelector('#c');
|
||
|
|
const renderer = new THREE.WebGLRenderer({canvas});
|
||
|
|
renderer.xr.enabled = true;
|
||
|
|
document.body.appendChild(VRButton.createButton(renderer));
|
||
|
|
|
||
|
|
const fov = 75;
|
||
|
|
const aspect = 2; // the canvas default
|
||
|
|
const near = 0.1;
|
||
|
|
const far = 50;
|
||
|
|
const camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
|
||
|
|
camera.position.set(0, 1.6, 0);
|
||
|
|
|
||
|
|
const scene = new THREE.Scene();
|
||
|
|
// object to put pickable objects on so we can easily
|
||
|
|
// separate them from non-pickable objects
|
||
|
|
const pickRoot = new THREE.Object3D();
|
||
|
|
scene.add(pickRoot);
|
||
|
|
|
||
|
|
{
|
||
|
|
const loader = new THREE.CubeTextureLoader();
|
||
|
|
const texture = loader.load([
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
'resources/images/grid-1024.png',
|
||
|
|
]);
|
||
|
|
scene.background = texture;
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const color = 0xFFFFFF;
|
||
|
|
const intensity = 1;
|
||
|
|
const light = new THREE.DirectionalLight(color, intensity);
|
||
|
|
light.position.set(-1, 2, 4);
|
||
|
|
scene.add(light);
|
||
|
|
}
|
||
|
|
|
||
|
|
const boxWidth = 1;
|
||
|
|
const boxHeight = 1;
|
||
|
|
const boxDepth = 1;
|
||
|
|
const boxGeometry = new THREE.BoxGeometry(boxWidth, boxHeight, boxDepth);
|
||
|
|
|
||
|
|
const sphereRadius = 0.5;
|
||
|
|
const sphereGeometry = new THREE.SphereGeometry(sphereRadius);
|
||
|
|
|
||
|
|
function makeInstance(geometry, color, x) {
|
||
|
|
const material = new THREE.MeshPhongMaterial({color});
|
||
|
|
|
||
|
|
const cube = new THREE.Mesh(geometry, material);
|
||
|
|
pickRoot.add(cube);
|
||
|
|
|
||
|
|
cube.position.x = x;
|
||
|
|
cube.position.y = 1.6;
|
||
|
|
cube.position.z = -2;
|
||
|
|
|
||
|
|
return cube;
|
||
|
|
}
|
||
|
|
|
||
|
|
const meshToMeshMap = new Map();
|
||
|
|
[
|
||
|
|
{ x: 0, boxColor: 0x44aa88, sphereColor: 0xFF4444, },
|
||
|
|
{ x: 2, boxColor: 0x8844aa, sphereColor: 0x44FF44, },
|
||
|
|
{ x: -2, boxColor: 0xaa8844, sphereColor: 0x4444FF, },
|
||
|
|
].forEach((info) => {
|
||
|
|
const {x, boxColor, sphereColor} = info;
|
||
|
|
const sphere = makeInstance(sphereGeometry, sphereColor, x);
|
||
|
|
const box = makeInstance(boxGeometry, boxColor, x);
|
||
|
|
// hide the sphere
|
||
|
|
sphere.visible = false;
|
||
|
|
// map the sphere to the box
|
||
|
|
meshToMeshMap.set(box, sphere);
|
||
|
|
// map the box to the sphere
|
||
|
|
meshToMeshMap.set(sphere, box);
|
||
|
|
});
|
||
|
|
|
||
|
|
class ControllerPickHelper extends THREE.EventDispatcher {
|
||
|
|
constructor(scene) {
|
||
|
|
super();
|
||
|
|
this.raycaster = new THREE.Raycaster();
|
||
|
|
this.objectToColorMap = new Map();
|
||
|
|
this.controllerToObjectMap = new Map();
|
||
|
|
this.tempMatrix = new THREE.Matrix4();
|
||
|
|
|
||
|
|
const pointerGeometry = new THREE.BufferGeometry().setFromPoints([
|
||
|
|
new THREE.Vector3(0, 0, 0),
|
||
|
|
new THREE.Vector3(0, 0, -1),
|
||
|
|
]);
|
||
|
|
|
||
|
|
this.controllers = [];
|
||
|
|
|
||
|
|
const selectListener = (event) => {
|
||
|
|
const controller = event.target;
|
||
|
|
const selectedObject = this.controllerToObjectMap.get(event.target);
|
||
|
|
if (selectedObject) {
|
||
|
|
this.dispatchEvent({type: event.type, controller, selectedObject});
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
const endListener = (event) => {
|
||
|
|
const controller = event.target;
|
||
|
|
this.dispatchEvent({type: event.type, controller});
|
||
|
|
};
|
||
|
|
|
||
|
|
for (let i = 0; i < 2; ++i) {
|
||
|
|
const controller = renderer.xr.getController(i);
|
||
|
|
controller.addEventListener('select', selectListener);
|
||
|
|
controller.addEventListener('selectstart', selectListener);
|
||
|
|
controller.addEventListener('selectend', endListener);
|
||
|
|
scene.add(controller);
|
||
|
|
|
||
|
|
const line = new THREE.Line(pointerGeometry);
|
||
|
|
line.scale.z = 5;
|
||
|
|
controller.add(line);
|
||
|
|
this.controllers.push({controller, line});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
reset() {
|
||
|
|
// restore the colors
|
||
|
|
this.objectToColorMap.forEach((color, object) => {
|
||
|
|
object.material.emissive.setHex(color);
|
||
|
|
});
|
||
|
|
this.objectToColorMap.clear();
|
||
|
|
this.controllerToObjectMap.clear();
|
||
|
|
}
|
||
|
|
update(pickablesParent, time) {
|
||
|
|
this.reset();
|
||
|
|
for (const {controller, line} of this.controllers) {
|
||
|
|
// cast a ray through the from the controller
|
||
|
|
this.tempMatrix.identity().extractRotation(controller.matrixWorld);
|
||
|
|
this.raycaster.ray.origin.setFromMatrixPosition(controller.matrixWorld);
|
||
|
|
this.raycaster.ray.direction.set(0, 0, -1).applyMatrix4(this.tempMatrix);
|
||
|
|
// get the list of objects the ray intersected
|
||
|
|
const intersections = this.raycaster.intersectObjects(pickablesParent.children);
|
||
|
|
if (intersections.length) {
|
||
|
|
const intersection = intersections[0];
|
||
|
|
// make the line touch the object
|
||
|
|
line.scale.z = intersection.distance;
|
||
|
|
// pick the first object. It's the closest one
|
||
|
|
const pickedObject = intersection.object;
|
||
|
|
// save which object this controller picked
|
||
|
|
this.controllerToObjectMap.set(controller, pickedObject);
|
||
|
|
// highlight the object if we haven't already
|
||
|
|
if (this.objectToColorMap.get(pickedObject) === undefined) {
|
||
|
|
// save its color
|
||
|
|
this.objectToColorMap.set(pickedObject, pickedObject.material.emissive.getHex());
|
||
|
|
// set its emissive color to flashing red/yellow
|
||
|
|
pickedObject.material.emissive.setHex((time * 8) % 2 > 1 ? 0xFF2000 : 0xFF0000);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
line.scale.z = 5;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const controllerToSelection = new Map();
|
||
|
|
const pickHelper = new ControllerPickHelper(scene);
|
||
|
|
pickHelper.addEventListener('selectstart', (event) => {
|
||
|
|
const {controller, selectedObject} = event;
|
||
|
|
const existingSelection = controllerToSelection.get(controller);
|
||
|
|
if (!existingSelection) {
|
||
|
|
controllerToSelection.set(controller, {
|
||
|
|
object: selectedObject,
|
||
|
|
parent: selectedObject.parent,
|
||
|
|
});
|
||
|
|
controller.attach(selectedObject);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
pickHelper.addEventListener('selectend', (event) => {
|
||
|
|
const {controller} = event;
|
||
|
|
const selection = controllerToSelection.get(controller);
|
||
|
|
if (selection) {
|
||
|
|
controllerToSelection.delete(controller);
|
||
|
|
selection.parent.attach(selection.object);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
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(time) {
|
||
|
|
time *= 0.001;
|
||
|
|
|
||
|
|
if (resizeRendererToDisplaySize(renderer)) {
|
||
|
|
const canvas = renderer.domElement;
|
||
|
|
camera.aspect = canvas.clientWidth / canvas.clientHeight;
|
||
|
|
camera.updateProjectionMatrix();
|
||
|
|
}
|
||
|
|
|
||
|
|
let ndx = 0;
|
||
|
|
for (const mesh of meshToMeshMap.keys()) {
|
||
|
|
const speed = 1 + ndx * .1;
|
||
|
|
const rot = time * speed;
|
||
|
|
mesh.rotation.x = rot;
|
||
|
|
mesh.rotation.y = rot;
|
||
|
|
++ndx;
|
||
|
|
}
|
||
|
|
|
||
|
|
pickHelper.update(pickRoot, time);
|
||
|
|
|
||
|
|
renderer.render(scene, camera);
|
||
|
|
}
|
||
|
|
|
||
|
|
renderer.setAnimationLoop(render);
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|
||
|
|
</script>
|
||
|
|
</html>
|
||
|
|
|