10 #if !defined(GEOGRAPHICLIB_OSGB_HPP)
11 #define GEOGRAPHICLIB_OSGB_HPP 1
18 # pragma warning (push)
19 # pragma warning (disable: 4251)
22 namespace GeographicLib {
47 static const std::string letters_;
48 static const std::string digits_;
50 static real northoffset_;
57 tileoffx_ = 2 * tilegrid_,
58 tileoffy_ = 1 * tilegrid_,
59 minx_ = - tileoffx_ * tile_,
60 miny_ = - tileoffy_ * tile_,
61 maxx_ = (tilegrid_*tilegrid_ - tileoffx_) * tile_,
62 maxy_ = (tilegrid_*tilegrid_ - tileoffy_) * tile_,
66 static real computenorthoffset();
67 static void CheckCoords(real x, real y);
84 static void Forward(real lat, real lon,
85 real& x, real& y, real& gamma, real& k) {
86 OSGBTM().
Forward(OriginLongitude(), lat, lon, x, y, gamma, k);
88 y += computenorthoffset();
105 static void Reverse(real x, real y,
106 real& lat, real& lon, real& gamma, real& k) {
108 y -= computenorthoffset();
109 OSGBTM().
Reverse(OriginLongitude(), x, y, lat, lon, gamma, k);
115 static void Forward(real lat, real lon, real& x, real& y) {
117 Forward(lat, lon, x, y, gamma, k);
123 static void Reverse(real x, real y, real& lat, real& lon) {
125 Reverse(x, y, lat, lon, gamma, k);
155 static void GridReference(
real x,
real y,
int prec, std::string& gridref);
171 static void GridReference(
const std::string& gridref,
173 bool centerp =
true);
188 return pow(
real(10),
real(48401603 - 100000000) / 100000000)
201 {
return real(20923713 - 20853810) / 20923713; }
208 static Math::real InverseFlattening() {
return 1/Flattening(); }
219 return pow(
real(10),
real(9998268 - 10000000) / 10000000);
248 #if defined(_MSC_VER)
249 # pragma warning (pop)
252 #endif // GEOGRAPHICLIB_OSGB_HPP