@openhps/core/dist/esm/three/loaders/AnimationLoader.js

Open Hybrid Positioning System - Core component

import { AnimationClip } from '../animation/AnimationClip.js';
import { FileLoader } from './FileLoader.js';
import { Loader } from './Loader.js';

/**
 * Class for loading animation clips in the JSON format. The files are internally
 * loaded via {@link FileLoader}.
 *
 * ```js
 * const loader = new THREE.AnimationLoader();
 * const animations = await loader.loadAsync( 'animations/animation.js' );
 * ```
 *
 * @augments Loader
 */
class AnimationLoader extends Loader {
  /**
   * Constructs a new animation loader.
   *
   * @param {LoadingManager} [manager] - The loading manager.
   */
  constructor(manager) {
    super(manager);
  }

  /**
   * Starts loading from the given URL and pass the loaded animations as an array
   * holding instances of {@link AnimationClip} to the `onLoad()` callback.
   *
   * @param {string} url - The path/URL of the file to be loaded. This can also be a data URI.
   * @param {function(Array<AnimationClip>)} onLoad - Executed when the loading process has been finished.
   * @param {onProgressCallback} onProgress - Executed while the loading is in progress.
   * @param {onErrorCallback} onError - Executed when errors occur.
   */
  load(url, onLoad, onProgress, onError) {
    const scope = this;
    const loader = new FileLoader(this.manager);
    loader.setPath(this.path);
    loader.setRequestHeader(this.requestHeader);
    loader.setWithCredentials(this.withCredentials);
    loader.load(url, function (text) {
      try {
        onLoad(scope.parse(JSON.parse(text)));
      } catch (e) {
        if (onError) {
          onError(e);
        } else {
          console.error(e);
        }
        scope.manager.itemError(url);
      }
    }, onProgress, onError);
  }

  /**
   * Parses the given JSON object and returns an array of animation clips.
   *
   * @param {Object} json - The serialized animation clips.
   * @return {Array<AnimationClip>} The parsed animation clips.
   */
  parse(json) {
    const animations = [];
    for (let i = 0; i < json.length; i++) {
      const clip = AnimationClip.parse(json[i]);
      animations.push(clip);
    }
    return animations;
  }
}
export { AnimationLoader };