/*
* Copyright 2003-2006, 2009, 2017, 2020 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.
*
* NASAWorldWind/WebWorldWind also contains the following 3rd party Open Source
* software:
*
* ES6-Promise – under MIT License
* libtess.js – SGI Free Software License B
* Proj4 – under MIT License
* JSZip – under MIT License
*
* A complete listing of 3rd Party software notices and licenses included in
* WebWorldWind can be found in the WebWorldWind 3rd-party notices and licenses
* PDF found in code directory.
*/
define([
'../../../shapes/Polygon',
'../../../shapes/ShapeAttributes',
'../../../shapes/SurfacePolygon',
'../WktElements',
'./WktObject',
'../WktType'
], function (Polygon,
ShapeAttributes,
SurfacePolygon,
WktElements,
WktObject,
WktType) {
/**
* It represents multiple polygons.
* @alias WktMultiPolygon
* @augments WktObject
* @constructor
*/
var WktMultiPolygon = function () {
WktObject.call(this, WktType.SupportedGeometries.MULTI_POLYGON);
/**
* Internal object boundaries for used polygons. Some polygons may have inner and outer boundaries.
* @type {Array}
*/
this.objectBoundaries = [];
/**
* Used to decide what objects do we add the boundaries to.
* @type {number}
*/
this.currentIndex = 0;
};
WktMultiPolygon.prototype = Object.create(WktObject.prototype);
/**
* In case of right parenthesis, it means either that the boundaries ends or that the object ends or that the WKT
* object ends.
*
* @inheritDoc
* @private
*/
WktMultiPolygon.prototype.rightParenthesis = function(options) {
WktObject.prototype.rightParenthesis.call(this, options);
// MultiPolygon object is distinguished by )),
if(options.tokens[options.tokens.length -1].type != WktType.TokenType.RIGHT_PARENTHESIS) {
this.addBoundaries();
// MultiPolygon boundaries are distinguished by ),
} else if(options.tokens[options.tokens.length -1].type == WktType.TokenType.RIGHT_PARENTHESIS &&
options.tokens[options.tokens.length -2].type != WktType.TokenType.RIGHT_PARENTHESIS) {
this.addObject();
}
};
/**
* It adds outer or inner boundaries to current polygon.
* @private
*/
WktMultiPolygon.prototype.addBoundaries = function() {
if(!this.objectBoundaries[this.currentIndex]) {
this.objectBoundaries[this.currentIndex] = [];
}
this.objectBoundaries[this.currentIndex].push(this.coordinates.slice());
this.coordinates = [];
};
/**
* It ends boundaries for current polygon.
* @private
*/
WktMultiPolygon.prototype.addObject = function() {
this.currentIndex++;
};
/**
* It returns array of SurfacePolygon in 2D or array of Polygons in 3D
* @inheritDoc
* @return {Polygon[]|SurfacePolygon[]}
*/
WktMultiPolygon.prototype.shapes = function () {
if (this._is3d) {
return this.objectBoundaries.map(function (boundaries) {
return new Polygon(boundaries, new ShapeAttributes(null));
}.bind(this));
} else {
return this.objectBoundaries.map(function (boundaries) {
return new SurfacePolygon(boundaries, new ShapeAttributes(null));
}.bind(this));
}
};
WktElements['MULTIPOLYGON'] = WktMultiPolygon;
return WktMultiPolygon;
});