itowns
Version:
A JS/WebGL framework for 3D geospatial data visualization
245 lines (196 loc) • 12 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _typeof = require("@babel/runtime/helpers/typeof");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _assertThisInitialized2 = _interopRequireDefault(require("@babel/runtime/helpers/assertThisInitialized"));
var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));
var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));
var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));
var THREE = _interopRequireWildcard(require("three"));
var _GeometryLayer2 = _interopRequireDefault(require("./GeometryLayer"));
var _dTilesProcessing = require("../Process/3dTilesProcessing");
var _C3DTileset = _interopRequireDefault(require("../Core/3DTiles/C3DTileset"));
var _C3DTExtensions = _interopRequireDefault(require("../Core/3DTiles/C3DTExtensions"));
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; }
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function () { var Super = (0, _getPrototypeOf2["default"])(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = (0, _getPrototypeOf2["default"])(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return (0, _possibleConstructorReturn2["default"])(this, result); }; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
var _update = (0, _dTilesProcessing.process3dTilesNode)();
var C3DTilesLayer = /*#__PURE__*/function (_GeometryLayer) {
(0, _inherits2["default"])(C3DTilesLayer, _GeometryLayer);
var _super = _createSuper(C3DTilesLayer);
/**
* Constructs a new instance of 3d tiles layer.
* @constructor
* @extends GeometryLayer
*
* @example
* // Create a new Layer 3d-tiles For DiscreteLOD
* const l3dt = new C3DTilesLayer('3dtiles', {
* name: '3dtl',
* source: new C3DTilesSource({
* url: 'https://tileset.json'
* })
* }, view);
* View.prototype.addLayer.call(view, l3dt);
*
* @param {string} id - The id of the layer, that should be unique.
* It is not mandatory, but an error will be emitted if this layer is
* added a
* {@link View} that already has a layer going by that id.
* @param {object} config configuration, all elements in it
* will be merged as is in the layer.
* @param {C3TilesSource} config.source The source of 3d Tiles.
*
* name.
* @param {View} view The view
*/
function C3DTilesLayer(id, config, view) {
var _this;
(0, _classCallCheck2["default"])(this, C3DTilesLayer);
_this = _super.call(this, id, new THREE.Group(), {
source: config.source
});
_this.isC3DTilesLayer = true;
_this.sseThreshold = config.sseThreshold || 16;
_this.cleanupDelay = config.cleanupDelay || 1000;
_this.onTileContentLoaded = config.onTileContentLoaded || function () {};
_this.protocol = '3d-tiles'; // custom cesium shaders are not functional;
_this.overrideMaterials = config.overrideMaterials !== undefined ? config.overrideMaterials : true;
_this.name = config.name;
_this.registeredExtensions = config.registeredExtensions || new _C3DTExtensions["default"]();
_this._cleanableTiles = [];
var resolve = _this.addInitializationStep();
_this.source.whenReady.then(function (tileset) {
_this.tileset = new _C3DTileset["default"](tileset, _this.source.baseUrl, _this.registeredExtensions); // Verify that extensions of the tileset have been registered in the layer
if (_this.tileset.extensionsUsed) {
var _iterator = _createForOfIteratorHelper(_this.tileset.extensionsUsed),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var extensionUsed = _step.value;
// if current extension is not registered
if (!_this.registeredExtensions.isExtensionRegistered(extensionUsed)) {
// if it is required to load the tileset
if (_this.tileset.extensionsRequired && _this.tileset.extensionsRequired.includes(extensionUsed)) {
console.error("3D Tiles tileset required extension \"".concat(extensionUsed, "\" must be registered to the 3D Tiles layer of iTowns to be parsed and used."));
} else {
console.warn("3D Tiles tileset used extension \"".concat(extensionUsed, "\" must be registered to the 3D Tiles layer of iTowns to be parsed and used."));
}
}
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
} // TODO: Move all init3dTilesLayer code to constructor
(0, _dTilesProcessing.init3dTilesLayer)(view, view.mainLoop.scheduler, (0, _assertThisInitialized2["default"])(_this), tileset.root).then(resolve);
});
return _this;
}
(0, _createClass2["default"])(C3DTilesLayer, [{
key: "preUpdate",
value: function preUpdate() {
return _dTilesProcessing.pre3dTilesUpdate.bind(this)();
}
}, {
key: "update",
value: function update(context, layer, node) {
return _update(context, layer, node);
}
}, {
key: "getObjectToUpdateForAttachedLayers",
value: function getObjectToUpdateForAttachedLayers(meta) {
if (meta.content) {
var result = [];
meta.content.traverse(function (obj) {
if (obj.isObject3D && obj.material && obj.layer == meta.layer) {
result.push(obj);
}
});
var p = meta.parent;
if (p && p.content) {
return {
elements: result,
parent: p.content
};
} else {
return {
elements: result
};
}
}
}
/**
* Finds the batch table of an object in a 3D Tiles layer. This is
* for instance needed when picking because we pick the geometric
* object which is not at the same level in the layer structure as
* the batch table. More details here on itowns internal
* organization of 3DTiles:
* https://github.com/MEPP-team/RICT/blob/master/Doc/iTowns/Doc.md#itowns-internal-organisation-of-3d-tiles-data
* @param {THREE.Object3D} object - a 3D geometric object
* @returns {C3DTBatchTable} - the batch table of the object
*/
}, {
key: "findBatchTable",
value: function findBatchTable(object) {
if (object.batchTable) {
return object.batchTable;
}
if (object.parent) {
return this.findBatchTable(object.parent);
}
}
/**
* Gets semantic information from batch table and batch table extensions
* of an intersected feature.
* @param {Array} intersects - @return An array containing all
* targets picked under specified coordinates. Intersects can be
* computed with view.pickObjectsAt(..). See fillHTMLWithPickingInfo()
* in 3dTilesHelper.js for an example.
* @returns {Object} - an object containing the batch id, the
* information from the batch table and from the extension of the batch
* table for an intersected feature.
*/
}, {
key: "getInfoFromIntersectObject",
value: function getInfoFromIntersectObject(intersects) {
var resultInfo = {};
var batchID = -1;
var batchTable = {}; // First, we get the ID and the batch table of the intersected object.
// (the semantic information about a feature is located in its batch
// table (see 3D Tiles specification).
for (var i = 0; i < intersects.length; i++) {
// interAttributes are glTF attributes of b3dm tiles (i.e.
// position, normal, batch id)
var interAttributes = intersects[i].object.geometry.attributes;
if (interAttributes && interAttributes._BATCHID) {
// face is a Face3 object of THREE which is a
// triangular face. face.a is its first vertex
var vertex = intersects[i].face.a; // get batch id of the face
batchID = interAttributes._BATCHID.array[vertex];
batchTable = this.findBatchTable(intersects[i].object);
break;
}
}
if (batchID === -1) {
return;
}
resultInfo.batchID = batchID; // get information from batch table (including from its extension)
Object.assign(resultInfo, batchTable.getInfoById(batchID));
return resultInfo;
}
}]);
return C3DTilesLayer;
}(_GeometryLayer2["default"]);
var _default = C3DTilesLayer;
exports["default"] = _default;