added timeEstimate and distanceBetweenPoints functions

Route.java

@@ -1,11 +1,11 @@
 public class Route {
     private double[] currentLocation; //Lat-Long coordinates for current location
-    private double[][][] routeSequences; //3D array of lat-long pairs + speed that form a route sequence, with multiple sequences stored
+    private double[][][] routeSequences; //3D array for routes. 1st dim selects route, 2nd dim selects route point, 3rd dim selects lat/long/speed/tolls (indices 0-2)
     private int routeSelected;
     private boolean tollsFlag; //stores user setting for whether to avoid tolls
     private boolean hwyFlag; //stores user preference for whether to avoid major highways
-    public long timeEstimate; //time estimate in seconds
-    public float tollsAmount; //stores toll amount if toll roads are used
+    public double[] timeEstimate; //time estimate in seconds
+    public float[] tollsAmount; //stores toll amount if toll roads are used
     public Destination currentDestination; //uses user-created class Destination
 
     private void updateCurrentLocation() {
@@ -21,11 +21,67 @@ public class Route {
         updateCurrentLocation();
         HelperFunctions apiCallToRouting = new HelperFunctions();
         routeSequences[0] = apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag); //route option 1
+        timeEstimate[0] = estimateTime(routeSequences[0]);
+        estimateTolls(routeSequences[0]);
         routeSequences[1] = apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag); //route option 2
+        timeEstimate[1] = estimateTime(routeSequences[1]);
+        estimateTolls(routeSequences[1]);
         routeSequences[2] = apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag); //route option 3
+        timeEstimate[2] = estimateTime(routeSequences[1]);
+        estimateTolls(routeSequences[1]);
     }
 
-    public void selectRoute() {
+    public int enumRoutes() {
+        return routeSequences.length;
+    }
 
+    public void selectRoute(int userSelection) {
+        routeSelected = userSelection;
+    }
+
+    public void estimateTolls(double[][] route) {
+
+    }
+
+    public double estimateTime(double[][] route) {
+        //calculates distances between route segments, divided by speed in MPH
+        //the API would return expected speed due to traffic conditions as part of the speed (index 2) in the route array
+        double runningTime = 0;
+        //steps through subsequence route points to get distances, calculates time based on speed estimate, and accumulates on runningTime
+        for (int i = 0; i < route.length; i++) { 
+            runningTime += distanceBetweenPoints(route[i], route[i+1]) / route[i][2];
+        }
+        return runningTime;
+    }
+
+    private double distanceBetweenPoints(double[] pointA, double[] pointB) {
+        /**
+         * Code excerpt by StackOverflow user Dommer, adapted for this application's use
+         * https://stackoverflow.com/questions/3694380/calculating-distance-between-two-points-using-latitude-longitude/3694410#3694410
+         * 
+         * Calculate distance between two points in latitude and longitude taking
+         * into account height difference. If you are not interested in height
+         * difference pass 0.0. Uses Haversine method as its base.
+         * 
+         * lat1, lon1 Start point lat2, lon2 End point el1 Start altitude in miles
+         * el2 End altitude in miles
+         * @returns Distance
+         */
+        final int R = 6371; // Radius of the earth
+        int el1 = 0, el2 = 0;
+
+        double latDistance = Math.toRadians(pointA[0] - pointB[0]);
+        double lonDistance = Math.toRadians(pointA[1] - pointB[1]);
+        double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2)
+            + Math.cos(Math.toRadians(pointA[0])) * Math.cos(Math.toRadians(pointB[0]))
+            * Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);
+        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+        double distance = R * c * 0.6213711922; // convert to miles
+
+        double height = el1 - el2;
+
+        distance = Math.pow(distance, 2) + Math.pow(height, 2);
+
+        return Math.sqrt(distance);
     }
 }