@openhps/core/dist/cjs/three/nodes/lighting/LightProbeNode.js

Open Hybrid Positioning System - Core component

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _AnalyticLightNode = _interopRequireDefault(require("./AnalyticLightNode.js"));
var _Normal = require("../accessors/Normal.js");
var _UniformArrayNode = require("../accessors/UniformArrayNode.js");
var _Vector = require("../../math/Vector3.js");
var _getShIrradianceAt = _interopRequireDefault(require("../functions/material/getShIrradianceAt.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
 * Module for representing light probes as nodes.
 *
 * @augments AnalyticLightNode
 */
class LightProbeNode extends _AnalyticLightNode.default {
  static get type() {
    return 'LightProbeNode';
  }

  /**
   * Constructs a new light probe node.
   *
   * @param {?LightProbe} [light=null] - The light probe.
   */
  constructor(light = null) {
    super(light);
    const array = [];
    for (let i = 0; i < 9; i++) array.push(new _Vector.Vector3());

    /**
     * Light probe represented as a uniform of spherical harmonics.
     *
     * @type {UniformArrayNode}
     */
    this.lightProbe = (0, _UniformArrayNode.uniformArray)(array);
  }

  /**
   * Overwritten to updated light probe specific uniforms.
   *
   * @param {NodeFrame} frame - A reference to the current node frame.
   */
  update(frame) {
    const {
      light
    } = this;
    super.update(frame);

    //

    for (let i = 0; i < 9; i++) {
      this.lightProbe.array[i].copy(light.sh.coefficients[i]).multiplyScalar(light.intensity);
    }
  }
  setup(builder) {
    const irradiance = (0, _getShIrradianceAt.default)(_Normal.normalWorld, this.lightProbe);
    builder.context.irradiance.addAssign(irradiance);
  }
}
var _default = exports.default = LightProbeNode;