@openhps/core/dist/esm/three/nodes/functions/ShadowMaskModel.js

Open Hybrid Positioning System - Core component

import LightingModel from '../core/LightingModel.js';
import { diffuseColor } from '../core/PropertyNode.js';
import { float } from '../tsl/TSLBase.js';

/**
 * Represents lighting model for a shadow material. Used in {@link ShadowNodeMaterial}.
 *
 * @augments LightingModel
 */
class ShadowMaskModel extends LightingModel {
  /**
   * Constructs a new shadow mask model.
   */
  constructor() {
    super();

    /**
     * The shadow mask node.
     *
     * @type {Node}
     */
    this.shadowNode = float(1).toVar('shadowMask');
  }

  /**
   * Only used to save the shadow mask.
   *
   * @param {Object} input - The input data.
   */
  direct({
    lightNode
  }) {
    this.shadowNode.mulAssign(lightNode.shadowNode);
  }

  /**
   * Uses the shadow mask to produce the final color.
   *
   * @param {NodeBuilder} builder - The current node builder.
   */
  finish({
    context
  }) {
    diffuseColor.a.mulAssign(this.shadowNode.oneMinus());
    context.outgoingLight.rgb.assign(diffuseColor.rgb); // TODO: Optimize LightsNode to avoid this assignment
  }
}
export default ShadowMaskModel;