Methods for calculating heading (instead of azimuth) added

- Azimuth is necessary for geodetic calculator but is between -180 and 180
- Headings need to be displayed from 0 to 360 so conversions methods were necessary

#implement #sory[24]

src/main/java/seng302/Model/BoatInRace.java

@@ -98,7 +98,6 @@ public class BoatInRace extends Boat {
         if (currentLeg != null) {
             currentLegName.setValue(currentLeg.getName());
         }
-
         return currentLegName;
     }
 
@@ -136,17 +135,38 @@ public class BoatInRace extends Boat {
     }
 
     /**
-     * Calculates the bearing of the travel via map coordinates of the raceMarkers
-     * @return the heading that the boat is heading towards in degrees.
+     * Calculates the azimuth of the travel via map coordinates of the raceMarkers
+     * @return the direction that the boat is heading towards in degrees (-180 to 180).
      */
     public double calculateAzimuth(){
-        //to be changed to coordinates when used to match reality.
+
         GeodeticCalculator calc = new GeodeticCalculator();
         calc.setStartingGeographicPoint(currentLeg.getStartGraphCoordinate().getLongitude(), currentLeg.getStartGraphCoordinate().getLatitude());
         calc.setDestinationGeographicPoint(currentLeg.getEndGraphCoordinate().getLongitude(), currentLeg.getEndGraphCoordinate().getLatitude());
 
         return calc.getAzimuth();
-
     }
 
+    /**
+     * Converts an azimuth to a bearing
+     * @param azimuth azimuth valuye to be converted
+     * @return the bearings in degrees (0 to 360).
+     */
+    public static double calculateHeading(double azimuth) {
+        if (azimuth >= 0) {
+            return azimuth;
+        }
+        else {
+            return azimuth + 360;
+        }
+    }
+
+    /**
+     * Calculates the bearing of the travel via map coordinates of the raceMarkers
+     * @return the direction that the boat is heading towards in degrees (0 to 360).
+     */
+    public double calculateHeading(){
+        double azimuth = this.calculateAzimuth();
+        return calculateHeading(azimuth);
+    }
 }