Removed unnecessary Position and GeoPoint classes to clear the code base.

- put utility classes in a package

#story[1047]

src/main/java/seng302/utilities/GeoPoint.java

@@ -0,0 +1,31 @@
+package seng302.utilities;
+
+/**
+ * A class represent Geo location (latitude, longitude).
+ * Created by Haoming on 15/5/2017
+ */
+public class GeoPoint {
+
+	double lat, lng;
+
+	public GeoPoint(double lat, double lng) {
+		this.lat = lat;
+		this.lng = lng;
+	}
+
+	public double getLat() {
+		return lat;
+	}
+
+	public void setLat(double lat) {
+		this.lat = lat;
+	}
+
+	public double getLng() {
+		return lng;
+	}
+
+	public void setLng(double lng) {
+		this.lng = lng;
+	}
+}

src/main/java/seng302/utilities/GeoUtility.java

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+package seng302.utilities;
+
+public class GeoUtility {
+
+	private static double EARTH_RADIUS = 6378.137;
+
+	/**
+	 * Calculates the euclidean distance between two markers on the canvas using xy coordinates
+	 *
+	 * @param p1 first geographical position
+	 * @param p2 second geographical position
+	 * @return the distance in meter between two points in meters
+	 */
+	public static Double getDistance(GeoPoint p1, GeoPoint p2) {
+
+		double dLat = Math.toRadians(p2.getLat() - p1.getLat());
+		double dLon = Math.toRadians(p2.getLng() - p1.getLng());
+
+		double a = Math.pow(Math.sin(dLat / 2), 2.0)
+				+ Math.cos(Math.toRadians(p1.getLat())) * Math.cos(Math.toRadians(p2.getLat()))
+				* Math.pow(Math.sin(dLon / 2), 2.0);
+
+		double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+		double d = EARTH_RADIUS * c;
+
+		return d * 1000; // distance from km to meter
+	}
+
+	/**
+	 * Calculates the angle between to angular co-ordinates on a sphere.
+	 *
+	 * @param p1 the first geographical position, start point
+	 * @param p2 the second geographical position, end point
+	 * @return the initial bearing in degree from p1 to p2, value range (0 ~ 360 deg.).
+	 * vertical up is 0 deg. horizontal right is 90 deg.
+	 *
+	 * NOTE:
+	 * The final bearing will differ from the initial bearing by varying degrees
+	 * according to distance and latitude (if you were to go from say 35°N,45°E
+	 * (≈ Baghdad) to 35°N,135°E (≈ Osaka), you would start on a heading of 60°
+	 * and end up on a heading of 120°
+	 */
+	public static Double getBearing(GeoPoint p1, GeoPoint p2) {
+
+		double dLon = Math.toRadians(p2.getLng() - p1.getLng());
+
+		double y = Math.sin(dLon) * Math.cos(Math.toRadians(p2.getLat()));
+		double x = Math.cos(Math.toRadians(p1.getLat())) * Math.sin(Math.toRadians(p2.getLat()))
+				- Math.sin(Math.toRadians(p1.getLat())) * Math.cos(Math.toRadians(p2.getLat())) * Math.cos(dLon);
+
+		double bearing = Math.toDegrees(Math.atan2(y, x));
+
+		return (bearing + 360.0) % 360.0;
+	}
+
+	/**
+	 * Given an existing point in lat/lng, distance in (in meter) and bearing
+	 * (in degrees), calculates the new lat/lng.
+	 *
+	 * @param origin   the original position within lat / lng
+	 * @param bearing  the bearing in degree, from original position to the new position
+	 * @param distance the distance in meter, from original position to the new position
+	 * @return the new position
+	 */
+	public static GeoPoint getGeoCoordinate(GeoPoint origin, Double bearing, Double distance) {
+		double b = Math.toRadians(bearing); // bearing to radians
+		double d = distance / 1000.0; // distance to km
+
+		double originLat = Math.toRadians(origin.getLat());
+		double originLng = Math.toRadians(origin.getLng());
+
+		double endLat = Math.asin(Math.sin(originLat) * Math.cos(d / EARTH_RADIUS)
+				+ Math.cos(originLat) * Math.sin(d / EARTH_RADIUS) * Math.cos(b));
+		double endLng = originLng
+				+ Math.atan2(Math.sin(b) * Math.sin(d / EARTH_RADIUS) * Math.cos(originLat),
+				Math.cos(d / EARTH_RADIUS) - Math.sin(originLat) * Math.sin(endLat));
+
+		return new GeoPoint(Math.toDegrees(endLat), Math.toDegrees(endLng));
+	}
+}

src/main/java/seng302/utilities/GeometryUtils.java

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+package seng302.utilities;
+
+import javafx.geometry.Point2D;
+
+/**
+ * A Class for performing geometric calculations on the canvas
+ * Created by wmu16 on 24/05/17.
+ */
+public final class GeometryUtils {
+
+
+    /**
+     * Performs the line function on two points of a line and a test point to test which side of the line that point is
+     * on. If the return value is
+     * return  1, then the point is on one side of the line,
+     * return -1 then the point is on the other side of the line
+     * return  0 then the point is exactly on the line.
+     * @param linePoint1 One point of the line
+     * @param linePoint2 Second point of the line
+     * @param testPoint The point to test with this line
+     * @return A return value indicating which side of the line the point is on
+     */
+    public static Integer lineFunction(Point2D linePoint1, Point2D linePoint2, Point2D testPoint) {
+
+        Double x = testPoint.getX();
+        Double y = testPoint.getY();
+        Double x1 = linePoint1.getX();
+        Double y1 = linePoint1.getY();
+        Double x2 = linePoint2.getX();
+        Double y2 = linePoint2.getY();
+
+        Double result =  (x - x1)*(y2 - y1) - (y - y1)*(x2 - x1);     //Line function
+
+        if (result > 0) {
+            return 1;
+        }
+        else if (result < 0) {
+            return -1;
+        }
+        else {
+            return 0;
+        }
+    }
+
+
+    /**
+     * Given a point and a vector (angle and vector length) Will create a new point, that vector away from the origin
+     * point
+     * @param originPoint The point with which to use as the base for our vector addition
+     * @param angleInDeg (DEGREES) The angle at which our new point is being created (in degrees!)
+     * @param vectorLength The length out on this angle from the origin point to create the new point
+     * @return a Point2D
+     */
+    public static Point2D makeArbitraryVectorPoint(Point2D originPoint, Double angleInDeg, Double vectorLength) {
+
+        Double endPointX = originPoint.getX() + vectorLength * Math.cos(Math.toRadians(angleInDeg));
+        Double endPointY = originPoint.getY() + vectorLength * Math.sin(Math.toRadians(angleInDeg));
+
+        return new Point2D(endPointX, endPointY);
+
+    }
+
+}