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Diffstat (limited to 'kstars/kstars/geolocation.cpp')
| -rw-r--r-- | kstars/kstars/geolocation.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/kstars/kstars/geolocation.cpp b/kstars/kstars/geolocation.cpp new file mode 100644 index 00000000..3750803c --- /dev/null +++ b/kstars/kstars/geolocation.cpp @@ -0,0 +1,201 @@ +/*************************************************************************** + geolocation.cpp - K Desktop Planetarium + ------------------- + begin : Sun Feb 11 2001 + copyright : (C) 2001-2005 by Jason Harris + email : jharris@30doradus.org + copyright : (C) 2003-2005 by Pablo de Vicente + email : p.devicente@wanadoo.es + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include <qstring.h> + +#include "geolocation.h" +#include "timezonerule.h" + +GeoLocation::GeoLocation(){ + GeoLocation( 0.0, 0.0 ); + TZrule = NULL; +} + +GeoLocation::GeoLocation( const GeoLocation &g ) { + Longitude = g.Longitude; + Latitude = g.Latitude; + Name = g.Name; + Province = g.Province; + Country = g.Country; + TimeZone = g.TimeZone; + TZrule = g.TZrule; + Height = g.Height; + indexEllipsoid = g.indexEllipsoid; + setEllipsoid ( indexEllipsoid ); + geodToCart(); +} + +GeoLocation::GeoLocation( GeoLocation *g ) { + Longitude = g->Longitude; + Latitude = g->Latitude; + Name = g->Name; + Province = g->Province; + Country = g->Country; + TimeZone = g->TimeZone; + TZrule = g->TZrule; + Height = g->Height; + indexEllipsoid = g->indexEllipsoid; + setEllipsoid ( indexEllipsoid ); + geodToCart(); +} + +GeoLocation::GeoLocation( dms lng, dms lat, + QString name, QString province, QString country, double tz, TimeZoneRule *tzrule, int iEllips, double hght ) { + Longitude = lng; + Latitude = lat; + Name = name; + Province = province; + Country = country; + TimeZone = tz; + TZrule = tzrule; + Height = hght; + indexEllipsoid = iEllips; + setEllipsoid ( indexEllipsoid ); + geodToCart(); +} + +GeoLocation::GeoLocation( double lng, double lat, + QString name, QString province, QString country, double tz, TimeZoneRule *tzrule, int iEllips, double hght ) { + Longitude.set( lng ); + Latitude.set( lat ); + Name = name; + Province = province; + Country = country; + TimeZone = tz; + TZrule = tzrule; + Height = hght; + indexEllipsoid = iEllips; + setEllipsoid ( indexEllipsoid ); + geodToCart(); +} + +GeoLocation::GeoLocation( double x, double y, double z, QString name, QString province, QString country, double TZ, TimeZoneRule *tzrule, int iEllips ) { + PosCartX = x; + PosCartY = y; + PosCartZ = z; + Name = name; + Province = province; + Country = country; + TimeZone = TZ; + TZrule = tzrule; + indexEllipsoid = iEllips; + setEllipsoid ( indexEllipsoid ); + cartToGeod(); +} + +QString GeoLocation::fullName() const { + QString s; + if ( province().isEmpty() ) { + s = translatedName() + ", " + translatedCountry(); + } else { + s = translatedName() + ", " + translatedProvince() + ", " + translatedCountry(); + } + + return s; +} + +void GeoLocation::reset( GeoLocation *g ) { + indexEllipsoid = g->ellipsoid(); + setEllipsoid ( indexEllipsoid ); + setLong( g->lng()->Degrees() ); + setLat( g->lat()->Degrees() ); + Name = g->name(); + Province = g->province(); + Country = g->country(); + TimeZone = g->TZ(); + TZrule = g->tzrule(); + Height = g->height(); +} + + +void GeoLocation::setEllipsoid(int index) { + static const double A[] = { 6378140.0, 6378137.0, 6378137.0, 6378137.0, 6378136.0 }; + static const double F[] = { 0.0033528131779, 0.0033528106812, 0.0033528131779, 0.00335281066474, 0.0033528131779 }; + + axis = A[index]; + flattening = F[index]; +} + +void GeoLocation::changeEllipsoid(int index) { + + setEllipsoid(index); + cartToGeod(); + +} + +void GeoLocation::cartToGeod(void) +{ + static const double RIT = 2.7778e-6; + double e2, rpro, lat1, xn, s1, sqrtP2, latd, sinl; + + e2 = 2*flattening-flattening*flattening; + + sqrtP2 = sqrt(PosCartX*PosCartX+PosCartY*PosCartY); + + rpro = PosCartZ/sqrtP2; + latd = atan(rpro/(1-e2)); + lat1 = 0.; + + while ( fabs( latd-lat1 ) > RIT ) { + lat1 = latd; + s1 = sin(lat1); + xn = axis/(sqrt(1-e2*s1*s1)); + latd = atan( rpro*(1+e2*xn*s1/PosCartZ) ); + } + + sinl = sin(latd); + xn = axis/( sqrt(1-e2*sinl*sinl) ); + + Height = sqrtP2/cos(latd)-xn; + Longitude.setRadians( atan2(PosCartY,PosCartX) ); + Latitude.setRadians(latd); +} + +void GeoLocation::geodToCart (void) { + double e2, xn; + double sinLong, cosLong, sinLat, cosLat; + + e2 = 2*flattening-flattening*flattening; + + Longitude.SinCos(sinLong,cosLong); + Latitude.SinCos(sinLat,cosLat); + + xn = axis/( sqrt(1-e2*sinLat*sinLat) ); + PosCartX = (xn+Height)*cosLat*cosLong; + PosCartY = (xn+Height)*cosLat*sinLong; + PosCartZ = (xn*(1-e2)+Height)*sinLat; +} + +void GeoLocation::TopocentricVelocity(double vtopo[], dms gst) { + + double Wearth = 7.29211510e-5; // rads/s + dms angularVEarth; + + dms time= GSTtoLST(gst); + // angularVEarth.setRadians(time.Hours()*Wearth*3600.); + double se, ce; + // angularVEarth.SinCos(se,ce); + time.SinCos(se,ce); + + double d0 = sqrt(PosCartX*PosCartX+PosCartY*PosCartY); + // km/s + vtopo[0] = - d0 * Wearth * se /1000.; + vtopo[1] = d0 * Wearth * ce /1000.; + vtopo[2] = 0.; +} |