itowns/lib/Parser/PotreeCinParser.js

A JS/WebGL framework for 3D geospatial data visualization

"use strict";

var _typeof = require("@babel/runtime/helpers/typeof");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var THREE = _interopRequireWildcard(require("three"));

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

var _default = {
  /** @module PotreeCinParser */

  /** Parse .cin PotreeConverter format (see {@link https://github.com/peppsac/PotreeConverter/tree/custom_bin}) and convert to a THREE.BufferGeometry
   * @function parse
   * @param {ArrayBuffer} buffer - the cin buffer.
   * @return {Promise} - a promise that resolves with a THREE.BufferGeometry.
   *
   */
  parse: function (buffer) {
    if (!buffer) {
      throw new Error('No array buffer provided.');
    } // Format: MinX,MinY,MinZ,MaxX,MaxY,MaxZ,X1,Y1,Z1,[...],XN,YN,ZN,R1,G1,B1,A1,[...],RN,GN,BN,AN


    var view = new DataView(buffer, 0, 6 * 4);
    var min = new THREE.Vector3(view.getFloat32(0, true), view.getFloat32(4, true), view.getFloat32(8, true));
    var max = new THREE.Vector3(view.getFloat32(12, true), view.getFloat32(16, true), view.getFloat32(20, true));
    var box = new THREE.Box3(min, max);
    var numPoints = Math.floor((buffer.byteLength - 24) / 16);
    var positions = new Float32Array(buffer, 24, 3 * numPoints);
    var colors = new Uint8Array(buffer, 24 + 3 * 4 * numPoints, 4 * numPoints);
    var geometry = new THREE.BufferGeometry();
    geometry.setAttribute('position', new THREE.BufferAttribute(positions, 3));
    geometry.setAttribute('color', new THREE.BufferAttribute(colors, 4, true));
    geometry.boundingBox = box;
    return Promise.resolve(geometry);
  }
};
exports["default"] = _default;