@openhps/core/dist/esm/three/materials/nodes/MeshLambertNodeMaterial.js

Open Hybrid Positioning System - Core component

import NodeMaterial from './NodeMaterial.js';
import BasicEnvironmentNode from '../../nodes/lighting/BasicEnvironmentNode.js';
import PhongLightingModel from '../../nodes/functions/PhongLightingModel.js';
import { MeshLambertMaterial } from '../MeshLambertMaterial.js';
const _defaultValues = /*@__PURE__*/new MeshLambertMaterial();

/**
 * Node material version of {@link MeshLambertMaterial}.
 *
 * @augments NodeMaterial
 */
class MeshLambertNodeMaterial extends NodeMaterial {
  static get type() {
    return 'MeshLambertNodeMaterial';
  }

  /**
   * Constructs a new mesh lambert node material.
   *
   * @param {Object} [parameters] - The configuration parameter.
   */
  constructor(parameters) {
    super();

    /**
     * This flag can be used for type testing.
     *
     * @type {boolean}
     * @readonly
     * @default true
     */
    this.isMeshLambertNodeMaterial = true;

    /**
     * Set to `true` because lambert materials react on lights.
     *
     * @type {boolean}
     * @default true
     */
    this.lights = true;
    this.setDefaultValues(_defaultValues);
    this.setValues(parameters);
  }

  /**
   * Overwritten since this type of material uses {@link BasicEnvironmentNode}
   * to implement the default environment mapping.
   *
   * @param {NodeBuilder} builder - The current node builder.
   * @return {?BasicEnvironmentNode<vec3>} The environment node.
   */
  setupEnvironment(builder) {
    const envNode = super.setupEnvironment(builder);
    return envNode ? new BasicEnvironmentNode(envNode) : null;
  }

  /**
   * Setups the lighting model.
   *
   * @return {PhongLightingModel} The lighting model.
   */
  setupLightingModel( /*builder*/
  ) {
    return new PhongLightingModel(false); // ( specular ) -> force lambert
  }
}
export default MeshLambertNodeMaterial;