Created Mercator projection to convert between Geo location and planar projection point.

- MapGeo and MapPoint encapsulate geo location and planar projection point into classes.

#story[928]

src/main/java/seng302/models/map/Boundary.java

@@ -0,0 +1,44 @@
+package seng302.models.map;
+
+/**
+ * The Boundary class represents a square territorial bound on a map. It contains
+ * four extremity double values(N, E, S, W). N and S are represented as latitudes
+ * in radians. E and W are represented as longitudes in radians.
+ *
+ * Created by Haoming on 10/5/17
+ */
+public class Boundary {
+
+	private double north, east, south, west;
+
+	public Boundary(double north, double east, double south, double west) {
+		this.north = north;
+		this.east = east;
+		this.south = south;
+		this.west = west;
+	}
+
+	public double getCentreLat() {
+		return (north + south) / 2;
+	}
+
+	public double getCentreLng() {
+		return (east + west) / 2;
+	}
+
+	public double getNorth() {
+		return north;
+	}
+
+	public double getEast() {
+		return east;
+	}
+
+	public double getSouth() {
+		return south;
+	}
+
+	public double getWest() {
+		return west;
+	}
+}