@openhps/core/dist/esm/three/renderers/common/RenderBundles.js

Open Hybrid Positioning System - Core component

import ChainMap from './ChainMap.js';
import RenderBundle from './RenderBundle.js';
const _chainKeys = [];

/**
 * This renderer module manages render bundles.
 *
 * @private
 */
class RenderBundles {
  /**
   * Constructs a new render bundle management component.
   */
  constructor() {
    /**
     * A chain map for maintaining the render bundles.
     *
     * @type {ChainMap}
     */
    this.bundles = new ChainMap();
  }

  /**
   * Returns a render bundle for the given bundle group and camera.
   *
   * @param {BundleGroup} bundleGroup - The bundle group.
   * @param {Camera} camera - The camera the bundle group is rendered with.
   * @return {RenderBundle} The render bundle.
   */
  get(bundleGroup, camera) {
    const bundles = this.bundles;
    _chainKeys[0] = bundleGroup;
    _chainKeys[1] = camera;
    let bundle = bundles.get(_chainKeys);
    if (bundle === undefined) {
      bundle = new RenderBundle(bundleGroup, camera);
      bundles.set(_chainKeys, bundle);
    }
    _chainKeys.length = 0;
    return bundle;
  }

  /**
   * Frees all internal resources.
   */
  dispose() {
    this.bundles = new ChainMap();
  }
}
export default RenderBundles;