public double TransitSearch(Body.Name SearchBody, Moment StartDate,
bool Forward, Longitude TransitPoint,
Longitude FoundLon, ref bool bForward)
{
if (SearchBody == Body.Name.Sun ||
SearchBody == Body.Name.Moon)
{
return(TransitSearchDirect(SearchBody, StartDate, Forward, TransitPoint,
FoundLon, ref bForward));
}
if (((int)SearchBody <= (int)Body.Name.Moon ||
(int)SearchBody > (int)Body.Name.Saturn) &&
SearchBody != Body.Name.Lagna)
{
return(StartDate.toUniversalTime());
}
sweph.obtainLock(h);
Retrogression r = new Retrogression(h, SearchBody);
double julday_ut = StartDate.toUniversalTime() - h.info.tz.toDouble() / 24.0;
double found_ut = julday_ut;
if (Forward)
{
found_ut = r.GetTransitForward(julday_ut, TransitPoint);
}
else
{
found_ut = r.GetTransitBackward(julday_ut, TransitPoint);
}
FoundLon.value = r.GetLon(found_ut, ref bForward).value;
sweph.releaseLock(h);
return(found_ut);
}
public double TransitSearchDirect(Body.Name SearchBody, Moment StartDate,
bool Forward, Longitude TransitPoint, Longitude FoundLon, ref bool bForward)
{
bool bDiscard = true;
sweph.obtainLock(h);
Transit t = new Transit(h, SearchBody);
double ut_base = StartDate.toUniversalTime() - h.info.TimeZone.toDouble() / 24.0;
Longitude lon_curr = t.GenericLongitude(ut_base, ref bDiscard);
sweph.releaseLock(h);
double diff = 0;
diff = TransitPoint.sub(lon_curr).value;
if (false == Forward)
{
diff -= 360.0;
}
double ut_diff_approx = diff / 360.0 * this.DirectSpeed(SearchBody);
sweph.obtainLock(h);
double found_ut = 0;
if (SearchBody == Body.Name.Lagna)
{
found_ut = t.LinearSearchBinary(ut_base + ut_diff_approx - 3.0 / 24.0, ut_base + ut_diff_approx + 3.0 / 24.0, TransitPoint, new ReturnLon(t.GenericLongitude));
}
else
{
found_ut = t.LinearSearch(ut_base + ut_diff_approx, TransitPoint, new ReturnLon(t.GenericLongitude));
}
FoundLon.value = t.GenericLongitude(found_ut, ref bForward).value;
bForward = true;
sweph.releaseLock(h);
return(found_ut);
}