void PlanetViewer::updatePlanets() {
KSNumbers num( ut.djd() );
bool changed(false);
//Check each planet to see if it needs to be updated
for ( unsigned int i=0; i<9; ++i ) {
if ( abs( int(ut.date().jd()) - LastUpdate[i] ) > UpdateInterval[i] ) {
KSPlanetBase *p = PCat.findByName( pName[i] );
p->findPosition( &num );
double s, c, s2, c2;
p->helEcLong()->SinCos( s, c );
p->helEcLat()->SinCos( s2, c2 );
planet[i]->point(0)->setX( p->rsun()*c*c2 );
planet[i]->point(0)->setY( p->rsun()*s*c2 );
planetLabel[i]->point(0)->setX( p->rsun()*c*c2 );
planetLabel[i]->point(0)->setY( p->rsun()*s*c2 );
if ( centerPlanet() == pName[i] ) {
double xc = (pw->map->x2() + pw->map->x())*0.5;
double yc = (pw->map->y2() + pw->map->y())*0.5;
double dx = planet[i]->point(0)->x() - xc;
double dy = planet[i]->point(0)->y() - yc;
pw->map->setLimits( pw->map->x() + dx, pw->map->x2() + dx,
pw->map->y() + dy, pw->map->y2() + dy );
}
LastUpdate[i] = int(ut.date().jd());
changed = true;
}
}
if ( changed ) pw->map->update();
}
void PlanetCatalog::findPosition( const KSNumbers *num, const dms *lat, const dms *LST ) {
Earth->findPosition(num);
for (KSPlanetBase * ksp = planets.first(); ksp != 0; ksp = planets.next()) {
ksp->findPosition(num, lat, LST, Earth);
}
}