func TestLongitude(t *testing.T) {
tx.CheckClose2(t, LongitudeLen(0), 111320, 1)
tx.CheckClose2(t, LongitudeLen(15), 107550, 1)
tx.CheckClose2(t, LongitudeLen(30), 96486, 1)
tx.CheckClose2(t, LongitudeLen(45), 78847, 1)
tx.CheckClose2(t, LongitudeLen(60), 55800, 1)
tx.CheckClose2(t, LongitudeLen(75), 28902, 1)
tx.CheckClose2(t, LongitudeLen(90), 0.000, 1)
}
func TestLatitude(t *testing.T) {
tx.CheckClose2(t, LatitudeLen(0), 110574, 1)
tx.CheckClose2(t, LatitudeLen(15), 110649, 1)
tx.CheckClose2(t, LatitudeLen(30), 110852, 1)
tx.CheckClose2(t, LatitudeLen(45), 111132, 1)
tx.CheckClose2(t, LatitudeLen(60), 111412, 1)
tx.CheckClose2(t, LatitudeLen(75), 111618, 1)
tx.CheckClose2(t, LatitudeLen(90), 111694, 1)
}
func TestFromLatLon(t *testing.T) {
known_values := [...]point{
// Aachen, Germany
point{50.77535, 6.08389, 294409, 5628898},
// New York, USA
point{40.71435, -74.00597, 583960, 4507523},
// Wellington, New Zealand
point{-41.28646, 174.77624, 313784, 5427057},
// Capetown, South Africa
point{-33.92487, 18.42406, 261878, 6243186},
// Mendoza, Argentina
point{-32.89018, -68.84405, 514586, 6360877},
// Fairbanks, Alaska, USA
point{64.83778, -147.71639, 466013, 7190568},
// Ben Nevis, Scotland, UK
point{56.79680, -5.00601, 377486, 6296562},
}
for _, point := range known_values {
eastings, northings := FromLatLon(point.Latitude, point.Longitude)
tx.CheckClose2(t, point.Eastings, eastings, 1)
tx.CheckClose2(t, point.Northings, northings, 1)
}
}