var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    }
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
import * as THREE from 'three';
import ObjectsCommon from './ObjectsCommon';
import isEqual from 'lodash.isequal';
import cloneDeep from 'lodash.clonedeep';
var ObjectsGroup = /** @class */ (function (_super) {
    __extends(ObjectsGroup, _super);
    function ObjectsGroup(children, mesh) {
        if (children === void 0) { children = []; }
        if (mesh === void 0) { mesh = undefined; }
        var _this = _super.call(this, ObjectsCommon.createViewOptions(), []) || this;
        _this.children = children;
        _this.children.forEach(function (child) { return child.setParent(_this); });
        _this.type = ObjectsGroup.typeName;
        _this.mesh = new THREE.Group();
        _this.meshPromise = null;
        _this.lastJSON = _this.toJSON();
        if (mesh) {
            _this.setMesh(mesh);
        }
        else {
            _this.meshPromise = _this.computeMeshAsync();
        }
        return _this;
    }
    /**
     *
     * @param object the object descriptor of the group
     * @param scene the scene to which the object belongs
     */
    ObjectsGroup.newFromJSON = function (object, scene) {
        if (object.type !== ObjectsGroup.typeName)
            throw new Error("Types do not match " + ObjectsGroup.typeName + ", " + object.type);
        try {
            var group = object.children.map(function (obj) {
                return scene.getObject(obj);
            });
            return new ObjectsGroup(group);
        }
        catch (e) {
            throw new Error("Cannot create ObjectsGroup. " + e);
        }
    };
    ObjectsGroup.prototype.getChildren = function () {
        return this.children;
    };
    ObjectsGroup.prototype.setMesh = function (mesh) {
        this.mesh = mesh;
        this._meshUpdateRequired = false;
        this._pendingOperation = false;
        this.mesh.updateMatrixWorld(true);
        this.mesh.updateMatrix();
    };
    ObjectsGroup.prototype.add = function (object) {
        this.children.push(object);
    };
    ObjectsGroup.prototype.clean = function () {
        this.children.length = 0;
    };
    ObjectsGroup.prototype.computeMeshAsync = function () {
        return __awaiter(this, void 0, void 0, function () {
            var _this = this;
            return __generator(this, function (_a) {
                // Operations must be applied to the single objects, but they are not transferred whilst they are grouped.
                if (this.children.length === 0) {
                    throw new Error('No item in group');
                }
                this.meshPromise = new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
                    var promises, meshes, e_1;
                    var _this = this;
                    return __generator(this, function (_a) {
                        switch (_a.label) {
                            case 0:
                                _a.trys.push([0, 2, , 3]);
                                this.mesh = new THREE.Group();
                                promises = this.children.map(function (object3D) {
                                    var objectClone = object3D.clone();
                                    var json = objectClone.toJSON();
                                    json.operations = json.operations.concat(_this.operations);
                                    objectClone.updateFromJSON(json);
                                    return objectClone.getMeshAsync();
                                });
                                return [4 /*yield*/, Promise.all(promises)];
                            case 1:
                                meshes = _a.sent();
                                meshes.forEach(function (mesh) {
                                    _this.mesh.add(mesh);
                                });
                                resolve(this.mesh);
                                return [3 /*break*/, 3];
                            case 2:
                                e_1 = _a.sent();
                                reject(e_1);
                                return [3 /*break*/, 3];
                            case 3: return [2 /*return*/];
                        }
                    });
                }); });
                return [2 /*return*/, this.meshPromise];
            });
        });
    };
    // When a group is un-grouped all the operations of the group are transferred to the single objects
    // Return the array of objects with all the inherited operations of the group.
    ObjectsGroup.prototype.unGroup = function () {
        var _this = this;
        this.children.forEach(function (object3D) {
            var json = object3D.toJSON();
            json.operations = json.operations.concat(_this.operations);
            object3D.updateFromJSON(json);
        });
        return this.children;
    };
    ObjectsGroup.prototype.clone = function () {
        var groupClone = this.children.map(function (obj) { return obj.clone(); });
        var obj = new ObjectsGroup(groupClone);
        obj.setOperations(this.operations);
        return obj;
    };
    ObjectsGroup.prototype.toJSON = function () {
        var obj = __assign({}, _super.prototype.toJSON.call(this), { children: this.children.map(function (obj) { return obj.toJSON(); }) });
        return cloneDeep(obj);
    };
    /**
     * Returns Object Reference if found in group. If not, throws Error.
     * @param obj Object descriptor
     */
    ObjectsGroup.prototype.getChild = function (obj) {
        var result = this.children.find(function (object) { return object.getID() === obj.id; });
        if (result)
            return result;
        else
            throw new Error("Object id " + obj.id + " not found in group");
    };
    /**
     * Updates objects belonging to a group. Group members cannot be changed.
     * If group members do not match an Error is thrown
     * @param object ObjectGroup descriptor object
     */
    ObjectsGroup.prototype.updateFromJSON = function (object) {
        var _this = this;
        if (object.id !== this.id)
            throw new Error("ids do not match " + object.id + ", " + this.id);
        var newChildren = [];
        try {
            object.children.forEach(function (obj) {
                var objToUpdate = _this.getChild(obj);
                objToUpdate.updateFromJSON(obj);
                newChildren.push(objToUpdate);
            });
            if (!isEqual(newChildren, this.children)) {
                this.children = newChildren.slice(0);
                this._meshUpdateRequired = true;
            }
            var vO = __assign({}, ObjectsCommon.createViewOptions(), object.viewOptions);
            this.setOperations(object.operations);
            this.setViewOptions(vO);
            if (!isEqual(this.lastJSON, this.toJSON())) {
                this.lastJSON = this.toJSON();
                this.meshPromise = this.computeMeshAsync();
                var obj = this.getParent();
                while (obj) {
                    obj.meshUpdateRequired = true;
                    obj.computeMeshAsync();
                    obj = obj.getParent();
                }
            }
        }
        catch (e) {
            throw new Error("Cannot update Group: " + e);
        }
    };
    ObjectsGroup.typeName = 'ObjectsGroup';
    return ObjectsGroup;
}(ObjectsCommon));
export default ObjectsGroup;
//# sourceMappingURL=ObjectsGroup.js.map