/*
* Copyright 2003-2006, 2009, 2017, United States Government, as represented by the Administrator of the
* National Aeronautics and Space Administration. All rights reserved.
*
* The NASAWorldWind/WebWorldWind platform is licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
define([
'./../KmlElements',
'./KmlGeometry',
'../../../geom/Position'
], function (KmlElements,
KmlGeometry,
Position) {
"use strict";
/**
* Constructs an KmlMultiGeometry object. KmlMultiGeometry is object, which contains other geometry objects. This
* class isn't intended to be used outside of the KmlObject hierarchy. It is already concrete implementation.
* @param options {Object}
* @param options.objectNode {Node} Node representing current geometry
* @param options.style {Promise} Promise of style to be applied to current geometry
* @constructor
* @classdesc Class representing MultiGeometry Element of Kml Document.
* @alias KmlMultiGeometry
* @see https://developers.google.com/kml/documentation/kmlreference#multigeometry
* @augments KmlGeometry
*/
var KmlMultiGeometry = function (options) {
KmlGeometry.call(this, options);
this._style = options.style;
};
KmlMultiGeometry.prototype = Object.create(KmlGeometry.prototype);
Object.defineProperties(KmlMultiGeometry.prototype, {
/**
* It returns all shapes currently present in this node.
* @memberof KmlMultiGeometry.prototype
* @type {KmlObject[]}
* @readonly
*/
kmlShapes: {
get: function () {
return this._factory.all(this);
}
},
/**
* Center of all the geometries implemented as average of centers of all shapes.
* @memberof KmlMultiGeometry.prototype
* @type {Position}
* @readonly
*/
kmlCenter: {
get: function () {
var positions = this.kmlShapes.map(function (shape) {
return shape.kmlCenter;
});
var midLatitude = 0;
var midLongitude = 0;
var midAltitude = 0;
positions.forEach(function (position) {
midLatitude += position.latitude;
midLongitude += position.longitude;
midAltitude += position.altitude;
});
return new Position(
midLatitude / positions.length,
midLongitude / positions.length,
midAltitude / positions.length
);
}
}
});
/**
* @inheritDoc
*/
KmlMultiGeometry.prototype.render = function(dc, kmlOptions) {
KmlGeometry.prototype.render.call(this, dc, kmlOptions);
this.kmlShapes.forEach(function(shape) {
shape.render(dc, kmlOptions);
});
};
/**
* @inheritDoc
*/
KmlMultiGeometry.prototype.getTagNames = function () {
return ["MultiGeometry"];
};
KmlElements.addKey(KmlMultiGeometry.prototype.getTagNames()[0], KmlMultiGeometry);
return KmlMultiGeometry;
});