@animech-public/playcanvas
Version:
PlayCanvas WebGL game engine
88 lines (85 loc) • 2.3 kB
JavaScript
import { platform } from '../../core/platform.js';
import { EventHandler } from '../../core/event-handler.js';
import { XrPlane } from './xr-plane.js';
class XrPlaneDetection extends EventHandler {
constructor(manager) {
super();
this._manager = void 0;
this._supported = platform.browser && !!window.XRPlane;
this._available = false;
this._planesIndex = new Map();
this._planes = [];
this._manager = manager;
if (this._supported) {
this._manager.on('start', this._onSessionStart, this);
this._manager.on('end', this._onSessionEnd, this);
}
}
_onSessionStart() {
if (this._manager.session.enabledFeatures) {
const available = this._manager.session.enabledFeatures.indexOf('plane-detection') !== -1;
if (available) {
this._available = true;
this.fire('available');
}
}
}
_onSessionEnd() {
for (let i = 0; i < this._planes.length; i++) {
this._planes[i].destroy();
this.fire('remove', this._planes[i]);
}
this._planesIndex.clear();
this._planes.length = 0;
if (this._available) {
this._available = false;
this.fire('unavailable');
}
}
update(frame) {
if (!this._available) {
if (!this._manager.session.enabledFeatures && frame.detectedPlanes.size) {
this._available = true;
this.fire('available');
} else {
return;
}
}
const detectedPlanes = frame.detectedPlanes;
for (const [xrPlane, plane] of this._planesIndex) {
if (detectedPlanes.has(xrPlane)) {
continue;
}
this._planesIndex.delete(xrPlane);
this._planes.splice(this._planes.indexOf(plane), 1);
plane.destroy();
this.fire('remove', plane);
}
for (const xrPlane of detectedPlanes) {
let plane = this._planesIndex.get(xrPlane);
if (!plane) {
plane = new XrPlane(this, xrPlane);
this._planesIndex.set(xrPlane, plane);
this._planes.push(plane);
plane.update(frame);
this.fire('add', plane);
} else {
plane.update(frame);
}
}
}
get supported() {
return this._supported;
}
get available() {
return this._available;
}
get planes() {
return this._planes;
}
}
XrPlaneDetection.EVENT_AVAILABLE = 'available';
XrPlaneDetection.EVENT_UNAVAILABLE = 'unavailable';
XrPlaneDetection.EVENT_ADD = 'add';
XrPlaneDetection.EVENT_REMOVE = 'remove';
export { XrPlaneDetection };