///////////////////////////////////////////////////////////////////////////
|
// Copyright © 2014 - 2017 Esri. All Rights Reserved.
|
//
|
// 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.
|
///////////////////////////////////////////////////////////////////////////
|
|
/**
|
* usng/utils.js is for USNG and MGRS functions that were not part of the original usng.js
|
* open source library that is in usng/usng.js. In other words, USNG and MGRS functions written
|
* specifically for this application belong in usng/utils.js, not usng/usng.js.
|
*/
|
|
define(["libs/usng/usng"], function(usng) {
|
|
var theClass = {
|
|
/**
|
* Looks up an MGRS or USNG string and returns a result object with text,
|
* latitude, and longitude properties, or null if the string is not a valid
|
* MGRS or USNG string.
|
*/
|
lookupMgrs: function(mgrs) {
|
var result = null;
|
try {
|
var latLon = [];
|
usng.USNGtoLL(mgrs, latLon);
|
if (2 <= latLon.length && !isNaN(latLon[0]) && !isNaN(latLon[1])) {
|
result = {
|
text: mgrs.toUpperCase(),
|
latitude: latLon[0],
|
longitude: latLon[1]
|
};
|
} else {
|
result = null;
|
}
|
} catch (err) {
|
//Not an MGRS/USNG string; that's fine; swallow
|
result = null;
|
}
|
return result;
|
}
|
};
|
return theClass;
|
});
|
