Commit e1c5407c authored by Eric Walsh's avatar Eric Walsh

autosave

parent a1ec8b1d
......@@ -126,10 +126,12 @@ double GMST(int year, double hours){
hoursLeft = (hoursLeft + 12);
}*/
D = ((julian(year, hours) - (hoursLeft / 24)) - 2451545.0);
double T = D/36525; // centuries since Jan 1st 2000 AD
if(DEBUG){
clog << "DEBUG: The GMST in days is: " << D << endl;
}
temp = 6.697374558 + 0.06570982441908*D + 1.00273790935*hoursLeft + (0.000026 * pow((D/36525), 2));
//temp = 67310.5481 + (876600* hoursLeft + 8640184.812866)*T + (0.09314 * pow(T, 2)) - ((6.2 * pow(10, -6)) * pow(T, 3));
temp = 6.697374558 + (0.06570982441908*D) + (1.00273790935*hoursLeft) + (0.000026 * pow(T, 2));
//temp = 18.697374558 + 24.06570982441908*D;
if(DEBUG){
clog << fixed << "DEBUG: D has a value of: " << D << endl
......@@ -138,6 +140,7 @@ double GMST(int year, double hours){
}
GMST = fmod(temp, 24.0);
//GMST = temp;
//GMST = modf((temp/24), &D) * 24;
/*if(GMST > 24){
GMST -= 24;
}*/
......@@ -178,17 +181,18 @@ pair<double,double> algorithm(double hours, pair<double, double> latAndLongPair,
temp = ((sin(a)*sin(phi)) + (cos(a) * cos(phi) * cos(A)));
sigma = asin(temp);
hourAngle = (-1 * sin(A) * cos(a)) / cos(sigma);
//hourAngle = (-1 * sin(A) * cos(a)) / cos(sigma);
hourAngle = (sin(a) - sin(sigma)*sin(phi)) / (cos(sigma) * cos(phi));
//cartesian to celestial
//alpha = atan2(yPrime, xPrime) * (180 / M_PI);
//sigma = asin(zPrime) * (180 / M_PI);
alpha = (GMST(year, hours) + Long) - (asin(hourAngle) * (180 / M_PI));
alpha = (GMST(year, hours) - Long) - (acos(hourAngle) * (180 / M_PI));
if(DEBUG){
clog << fixed << setprecision(10) << "DEBUG: hourAngle has a value of: " << hourAngle << endl
<< "DEBUG: temp has a value of: " << temp << " and the arcsine of temp is: " << asin(temp) << endl
<< "DEBUG: sigma then has a value of: " << sigma * (180 / M_PI) << endl
<< "DEBUG: alpha has a value of: " << alpha << " which means that the LST is: " << (GMST(year, hours) + Long) << " and the hour angle is " << asin(hourAngle) * (180 / M_PI)<< endl;
<< "DEBUG: alpha has a value of: " << alpha << " which means that the LST is: " << (GMST(year, hours) + Long) << " and the hour angle is " << hourAngle << " and the arccos of the hour angle is: " << acos(hourAngle) * (180 / M_PI) << endl;
//clog << "DEBUG: alpha has a value of: " << alpha << " and sigma has a value of: " << sigma * (180 / M_PI)<< endl;
}
......
......@@ -29,11 +29,11 @@ int main(){
//calculating the julian date
cout << "if the date is January 27, 2017 at 5:45:54.6 pm, the julian date function should return 2457781.240208." << endl
<< "It actually returns: " << julian(2017, 641.765166667) << endl;
<< "It actually returns: " << julian(2017, 641.9) << endl;
cout << "if the date is January 27, 2017 at 5:45:54.6 pm, the GMST date function should return: 2.34623833333." << endl
<< "It actually returns: " << GMST(2017, 641.765166667) << endl;
<< "It actually returns: " << GMST(2017, 641.9) << endl;
//converting time and longitude to phi
/*cout << "if its January 27, 2034, 5:45 pm at a longitude of 49 the, phi should equal 4.65147698949." << endl
<< "Phi actually equals: " << timeToPhi(2034, 641.765166667, 49) << endl;*/
......@@ -46,7 +46,7 @@ int main(){
horizontal.first = 20;
horizontal.second = 270;
pair<double,double> returnValue;
returnValue = algorithm(641.765166667, test, horizontal, 2017);
returnValue = algorithm(641.9, test, horizontal, 2017);
cout << "The algorithm function, when its January 27, 2017, at 5:45:54 pm, at a lat and long of -46,89 and when looking at the sky at 20, 270 (in horizontal coordinates), gives: " << endl
<< "Right ascention of: " << returnValue.first << " and a declination of: " << returnValue.second << endl;
}
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