@openhps/core/dist/esm/three/loaders/nodes/NodeMaterialLoader.js

Open Hybrid Positioning System - Core component

import { MaterialLoader } from '../../loaders/MaterialLoader.js';

/**
 * A special type of material loader for loading node materials.
 *
 * @augments MaterialLoader
 */
class NodeMaterialLoader extends MaterialLoader {
  /**
   * Constructs a new node material loader.
   *
   * @param {LoadingManager} [manager] - A reference to a loading manager.
   */
  constructor(manager) {
    super(manager);

    /**
     * Represents a dictionary of node types.
     *
     * @type {Object<string,Node.constructor>}
     */
    this.nodes = {};

    /**
     * Represents a dictionary of node material types.
     *
     * @type {Object<string,NodeMaterial.constructor>}
     */
    this.nodeMaterials = {};
  }

  /**
   * Parses the node material from the given JSON.
   *
   * @param {Object} json - The JSON definition
   * @return {NodeMaterial}. The parsed material.
   */
  parse(json) {
    const material = super.parse(json);
    const nodes = this.nodes;
    const inputNodes = json.inputNodes;
    for (const property in inputNodes) {
      const uuid = inputNodes[property];
      material[property] = nodes[uuid];
    }
    return material;
  }

  /**
   * Defines the dictionary of node types.
   *
   * @param {Object<string,Node.constructor>} value - The node library defined as `<classname,class>`.
   * @return {NodeLoader} A reference to this loader.
   */
  setNodes(value) {
    this.nodes = value;
    return this;
  }

  /**
   * Defines the dictionary of node material types.
   *
   * @param {Object<string,NodeMaterial.constructor>} value - The node material library defined as `<classname,class>`.
   * @return {NodeLoader} A reference to this loader.
   */
  setNodeMaterials(value) {
    this.nodeMaterials = value;
    return this;
  }

  /**
   * Creates a node material from the given type.
   *
   * @param {string} type - The node material type.
   * @return {Node} The created node material instance.
   */
  createMaterialFromType(type) {
    const materialClass = this.nodeMaterials[type];
    if (materialClass !== undefined) {
      return new materialClass();
    }
    return super.createMaterialFromType(type);
  }
}
export default NodeMaterialLoader;