added helper methods for debug printing

fixed issue when reading wifi entries within old walk files
worked on earth-registration
added corresponding test-cases
other minor changes

tests/geo/TestEarth.cpp

@@ -0,0 +1,50 @@
+#ifdef WITH_TESTS
+
+#include "../Tests.h"
+
+#include "../../geo/EarthMapping.h"
+
+TEST(Earth, fordwardBackward) {
+
+	const Point3 mapCenter(20, 30, 10);
+	const EarthPos earthCenter(50, 10, 100);
+
+	// earth-mapping including rotation
+	EarthMapping em(mapCenter, earthCenter, 40);
+
+	// as-is
+	const Point3 p1 = em.worldToMap( earthCenter );
+	ASSERT_EQ(mapCenter.x, p1.x);
+	ASSERT_EQ(mapCenter.y, p1.y);
+	ASSERT_EQ(mapCenter.z, p1.z);
+
+	// as-is
+	const EarthPos ep1 = em.mapToWorld( mapCenter );
+	ASSERT_EQ(earthCenter.lat, ep1.lat);
+	ASSERT_EQ(earthCenter.lon, ep1.lon);
+	ASSERT_EQ(earthCenter.height, ep1.height);
+
+
+	// + 20 height
+	const Point3 p2 = em.worldToMap( EarthPos(50,10,120) );
+	ASSERT_EQ(mapCenter.x, p2.x);
+	ASSERT_EQ(mapCenter.y, p2.y);
+	ASSERT_EQ(30, p2.z);
+
+	// - 20 height
+	const EarthPos ep2 = em.mapToWorld( Point3(20, 30, -10) );
+	ASSERT_EQ(earthCenter.lat, ep2.lat);
+	ASSERT_EQ(earthCenter.lon, ep2.lon);
+	ASSERT_EQ(earthCenter.height-20, ep2.height);
+
+}
+
+TEST(Earth, estimateNorth) {
+
+
+
+}
+
+
+
+#endif