/**
* Search all the stars that could be in the hemisphere
*
* @param _date It's the date that will be use to search the stars
* @param _dLat It's the latitude of the star's pointer
* @param _dLon It's the longitude of the star's pointer
* @throws SQLException
* @return Return an arraylist that contains all the stars could be possible to see
*/
public ArrayList<CelestialObject> starsForCoordinates(Calendar _date, double _dLat, double _dLon)
throws SQLException {
ArrayList<CelestialObject> al_stars = new ArrayList<CelestialObject>();
int l_Bayer = 0;
int l_id;
int l_HIP;
int l_HD;
int l_HR;
String l_ProperName;
double l_dRA;
double l_Dec;
double l_dDistance;
double l_dMag;
double l_dColorIndex;
try {
if (!isDouble(Double.toString(_dLon)) || !isDouble(Double.toString(_dLat)))
throw new IllegalArgumentException(
"Error : Illegal latitude/longitude. Please check the coordinates !");
} catch (IllegalArgumentException e) {
log.warning(e.getMessage());
_dLat = _dLon = 0;
}
Mathematics l_calc = new Mathematics(_date, _dLat, _dLon);
for (CelestialObject star : this.allStars) {
l_id = star.getId();
l_HIP = star.getHIP();
l_HD = star.getHD();
l_HR = star.getHR();
l_ProperName = star.getProperName();
l_dRA = star.getRA();
l_Dec = star.getDec();
l_dDistance = star.getDistance();
l_dMag = star.getMag();
l_dColorIndex = star.getColorIndex();
CelestialObject l_star =
new CelestialObject(
l_id,
l_HIP,
l_HD,
l_HR,
l_ProperName,
l_dRA,
l_Dec,
l_dDistance,
l_dMag,
l_dColorIndex,
l_Bayer);
if (l_id == 1) // Sun
{
l_calc.calculatePositionSun();
l_star.setDec(l_calc.getDeclination());
l_star.setRA(l_calc.getAscension());
} else if (l_id == 2) // Moon
{
l_calc.calculatePositionMoon();
l_star.setDec(l_calc.getDeclination());
l_star.setRA(l_calc.getAscension());
double l_now = l_calc.getMoonBrightness(false);
double l_yes = l_calc.getMoonBrightness(true);
if (l_yes > l_now) l_now *= -1;
l_star.setMag(l_now);
} else l_calc.calculateAll(l_star.getDec(), l_star.getRA());
if (l_calc.getHeight() >= 0) {
l_star.setXReal(l_calc.getX());
l_star.setYReal(l_calc.getY());
l_star.SetAzimuth(l_calc.getAzimuth());
l_star.SetHeight(l_calc.getHeight());
al_stars.add(l_star);
}
l_star = null;
}
return al_stars;
}
