gtajesgenga-ami.js/src/helpers/x/helpers.x.mesh.js

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import { Matrix4 } from 'three/src/math/Matrix4';

/**
 * @module helpers/x/mesh
 */

export default class {
  constructor() {
    this._file = null;

    this._3jsVTK_loader = new THREE.VTKLoader();
    this._mesh = null;
    this._materialColor = 0xe91e63;
    this._RAStoLPS = null;
    this._material = new THREE.MeshLambertMaterial({
      shading: THREE.SmoothShading,
      color: this._materialColor,
      side: THREE.DoubleSide,
    });
  }

  // accessor properties
  get file() {
    return this._file;
  }

  set file(fname) {
    this._file = fname;
  }

  get materialColor() {
    return this._materialColor;
  }

  set materialColor(color) {
    this._materialColor = color;
  }

  // load function
  load() {
    if (this.file) {
      return new Promise((resolve, reject) => {
        this._3jsVTK_loader.load(
          this.file,
          geometry => {
            geometry.computeVertexNormals();
            this._mesh = new THREE.Mesh(geometry, this._material);
            this._RAStoLPS = new Matrix4();
            this._RAStoLPS.set(-1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
            this._mesh.applyMatrix(this._RAStoLPS);
            // resolve the promise and return the mesh
            resolve(this._mesh);
          },
          () => {},
          error => {
            console.log(error);
            reject({
              message: `Couldn't load file: ${this.file}.`,
              error,
            });
          }
        );
      });
    }

    return Promise.reject({ message: `File is not defined: ${this.file}.` });
  }
}