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

Open Hybrid Positioning System - Core component

import { LightsNode } from '../../nodes/Nodes.js';
import ChainMap from './ChainMap.js';
const _defaultLights = /*@__PURE__*/new LightsNode();
const _chainKeys = [];

/**
 * This renderer module manages the lights nodes which are unique
 * per scene and camera combination.
 *
 * The lights node itself is later configured in the render list
 * with the actual lights from the scene.
 *
 * @private
 * @augments ChainMap
 */
class Lighting extends ChainMap {
  /**
   * Constructs a lighting management component.
   */
  constructor() {
    super();
  }

  /**
   * Creates a new lights node for the given array of lights.
   *
   * @param {Array<Light>} lights - The render object.
   * @return {LightsNode} The lights node.
   */
  createNode(lights = []) {
    return new LightsNode().setLights(lights);
  }

  /**
   * Returns a lights node for the given scene and camera.
   *
   * @param {Scene} scene - The scene.
   * @param {Camera} camera - The camera.
   * @return {LightsNode} The lights node.
   */
  getNode(scene, camera) {
    // ignore post-processing

    if (scene.isQuadMesh) return _defaultLights;
    _chainKeys[0] = scene;
    _chainKeys[1] = camera;
    let node = this.get(_chainKeys);
    if (node === undefined) {
      node = this.createNode();
      this.set(_chainKeys, node);
    }
    _chainKeys.length = 0;
    return node;
  }
}
export default Lighting;