1 files changed, 135 insertions, 0 deletions
diff --git a/sdnr/wt/odlux/apps/networkMapApp/src/utils/mapUtils.ts b/sdnr/wt/odlux/apps/networkMapApp/src/utils/mapUtils.ts
new file mode 100644
index 000000000..34cdc0638
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+++ b/sdnr/wt/odlux/apps/networkMapApp/src/utils/mapUtils.ts
@@ -0,0 +1,135 @@
+/**
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt odlux
+ * =================================================================================================
+ * Copyright (C) 2020 highstreet technologies GmbH Intellectual Property. 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.
+ * ============LICENSE_END==========================================================================
+ */
+
+const EARTHRADIUSM = 6378137;
+
+type updatedCoordinates = { south: number, west: number, north: number, east: number };
+
+
+
+
+export const addDistance = (south: number, west: number, north: number, east: number, distanceKm: number): updatedCoordinates => {
+
+    const distanceInM = distanceKm * 1000;
+
+    const dLat = distanceInM / EARTHRADIUSM;
+    const dLon = distanceInM / (EARTHRADIUSM * Math.cos(Math.PI * (north + south) / 360));
+
+    const latOffset = dLat * 180 / Math.PI;
+    const lonOffset = dLon * 180 / Math.PI;
+
+    const newEast = checkLongitude(east + lonOffset);
+    const newWest = checkLongitude(west - lonOffset);
+    const newNorth = checkLatitude(north + latOffset);
+    const newSouth = checkLatitude(south - latOffset);
+
+    return { east: newEast, north: newNorth, south: newSouth, west: newWest };
+
+}
+
+
+//taken from https://www.movable-type.co.uk/scripts/latlong.html
+export const calculateMidPoint = (lat1: number, lon1: number, lat2: number, lon2: number) =>{
+
+    const dLon = degrees_to_radians(lon2 - lon1);
+
+    //convert to radians
+    lat1 = degrees_to_radians(lat1);
+    lat2 = degrees_to_radians(lat2);
+    lon1 = degrees_to_radians(lon1);
+
+    const Bx = Math.cos(lat2) * Math.cos(dLon);
+    const By = Math.cos(lat2) * Math.sin(dLon);
+    const lat3 = Math.atan2(Math.sin(lat1) + Math.sin(lat2), Math.sqrt((Math.cos(lat1) + Bx) * (Math.cos(lat1) + Bx) + By * By));
+    const lon3 = lon1 + Math.atan2(By, Math.cos(lat1) + Bx);
+
+    return [radians_to_degrees(lon3), radians_to_degrees(lat3)];
+}
+
+
+export const LatLonToDMS = (value:number, isLon:boolean=false) =>{
+    const absoluteValue = Math.abs(value);
+    const d = Math.floor(absoluteValue);
+    const m = Math.floor((absoluteValue -d)* 60);
+    const s = (absoluteValue - d - m / 60 ) * 3600;
+    const dms=`${d}° ${m}' ${s.toFixed(2)}"`
+
+    const sign = Math.sign(value);
+
+    if(isLon){
+        return (sign === -1 || sign === -0 ) ? dms + " W" : dms + " E";
+    }else{
+        return (sign === -1 || sign === -0 ) ? dms + " S" : dms + " N";
+    } 
+}
+
+// Because features come from tiled vector data, feature geometries may be split
+// or duplicated across tile boundaries and, as a result, features may appear
+// multiple times in query results.
+
+//taken from https://docs.mapbox.com/mapbox-gl-js/example/filter-features-within-map-view/
+
+export const getUniqueFeatures = (array: mapboxgl.MapboxGeoJSONFeature[], comparatorProperty:string) =>{
+    var existingFeatureKeys: any = {};
+    
+    var uniqueFeatures = array.filter(function(el) {
+    if (existingFeatureKeys[el.properties![comparatorProperty]]) {
+    return false;
+    } else {
+    existingFeatureKeys[el.properties![comparatorProperty]] = true;
+    return true;
+    }
+    });
+     
+    return uniqueFeatures;
+    }
+
+const radians_to_degrees = (radians:number) =>{
+    
+    var pi = Math.PI;
+    return radians * (180/pi);
+}
+
+ const degrees_to_radians = (degrees: number) =>
+    {
+    return degrees * (Math.PI/180);
+    }
+
+
+const checkLatitude = (lat: number) => {
+
+    if (lat > 90)
+        return 90;
+    else if (lat < -90)
+        return -90;
+    else
+        return lat;
+
+}
+
+const checkLongitude = (lon: number) => {
+    if (lon > 180)
+        return 180;
+    else if (lon < -180)
+        return -180;
+    else
+        return lon;
+}
+
+
+