started adding earth-mapping

some new helper methods
added support for floorplan metadata load/save

geo/EarthPos.h

@@ -0,0 +1,21 @@
+#ifndef EARTHPOS_H
+#define EARTHPOS_H
+
+/** describes the location on the earth's surface */
+struct EarthPos {
+
+	double lat;
+
+	double lon;
+
+	/** height above sea level */
+	float height;
+
+	/** ctor with values */
+	EarthPos(const double lat, const double lon, const float height) : lon(lon), lat(lat), height(height) {
+		;
+	}
+
+};
+
+#endif // EARTHPOS_H