@polygonjs/polygonjs/dist/src/engine/scene/utils/LoadingController.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
import { SCENE_EVENT_CREATED_EVENT_CONTEXT, SCENE_EVENT_READY_EVENT_CONTEXT } from "./events/SceneEventsController";
export class LoadingController {
  constructor(scene) {
    this.scene = scene;
    this._loadingState = true;
    this._autoUpdating = false;
  }
  markAsLoading() {
    this._setLoadingState(true);
  }
  markAsLoaded() {
    this.scene.missingExpressionReferencesController.resolveMissingReferences();
    this._setLoadingState(false);
    this._triggerLoadedEvent();
  }
  dispatchReadyEvent() {
    if (globalThis.Event) {
      this.scene.eventsDispatcher.sceneEventsController.dispatch(SCENE_EVENT_READY_EVENT_CONTEXT);
    }
  }
  _triggerLoadedEvent() {
    if (globalThis.Event) {
      this.scene.eventsDispatcher.sceneEventsController.dispatch(SCENE_EVENT_CREATED_EVENT_CONTEXT);
    }
  }
  _setLoadingState(state) {
    this._loadingState = state;
    this.setAutoUpdate(!this._loadingState);
    this.scene.cooker.unblock();
  }
  isLoading() {
    return this._loadingState;
  }
  loaded() {
    return !this._loadingState;
  }
  autoUpdating() {
    return this._autoUpdating;
  }
  setAutoUpdate(newState) {
    if (this._autoUpdating !== newState) {
      this._autoUpdating = newState;
      if (this._autoUpdating) {
        const root = this.scene.root();
        if (root) {
          root.processQueue();
        }
      }
    }
  }
}