Calculate destination point given starting point lat / long (numeric degrees), bearing (numeric degrees) & distance (in m). from: Vincenty direct formula - T Vincenty, "Direct and Inverse Solutions of Geodesics on the Ellipsoid with application of nested equations", Survey Review, vol XXII no 176, 1975" http://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf © 2002-2008 Chris Veness http://www.movable-type.co.uk/scripts/latlong-vincenty-direct.html