Commit 0865371a authored by Brandon Reid's avatar Brandon Reid

autosave

parent 8325f152
#include "Algorithm.h"
#include <deque>
#include <utility>
#include <cmath>
#include <iostream>
#include <iomanip>
const bool DEBUG = true;
//the main algorithm function converts
using namespace std;
//const int COl_MAX = 24;
//const int ROW_MAX = 180;
//converts horizontal coordinates to cartesian coordinates in xyz where alt is the altitude angle and azi is Azimuth angle
void horizontalToCart(double alt, double azi, double &x, double &y, double &z){
//convertion of Horizontal coordinates to cartesian coordinates
alt = alt * (M_PI / 180);
azi = azi * (M_PI / 180);
z = sin(alt);
x = cos(alt) * cos(azi);
y = -1 * cos(alt) * sin(azi);
}
//converts the latitude to theta
double latToTheta(double lat){
double theta;
//loat L = lat * (M_PI / 180);
theta = (90 - lat);
return theta;
}
//converts the time to phi
double timeToPhi(int year, double hours, double longitude){
float phi;
float date = GMST(year, hours);
//converts the longitude into radians
float lam = longitude * (M_PI / 180);
//calculates phi;
phi = date * ((2 * M_PI) / 24) - lam;
return phi;
}
//convert the date to a julian date;
double julian(double year, double hours){
double leap = 0;
double notLeap, dayFract, dayWhole;
double julian, years, days, seconds, hoursLeft;
years = year + 4712;//years is current year (AD or CE) 4713 is the start of the julian calender 1 is 0 AD/CE
if(DEBUG){
clog << "DEBUG: years has a value of: " << years << endl;
}
for(int i = -4713; i <= year; i++){ //counts number of leap years
if(i < 1582){//before the switch to gregorian calenders, leap years were every 4 years
if(i % 4 == 0){
leap++;
/* if(DEBUG){
clog <<"DEBUG: " << i << " is a leap year." << endl;
} */
}
}else{ //after the switch the gregorian calenders, leap years weren't counted on centries unless it was divisible by 0
if(i % 4 == 0){
if(i % 100 == 0){
if(DEBUG){
clog << "DEBUG: The year is " << i;
}
if(i % 400 == 0){
leap++;
if(DEBUG){
clog << ", and its a leap year." << endl;
}
} else {
if(DEBUG){
clog << endl;
}
}
} else {
leap++;
/* if(DEBUG){
clog << "DEBUG: " << i << " is a leap year." << endl;
} */
}
}
}
}
notLeap = years - leap;
if(DEBUG){
clog << "DEBUG: There are " << leap << " leap years and " << notLeap << " non leap years totalling " << leap + notLeap << " years." << endl;
}
days = (leap * 366) + (notLeap * 365) - 10;
if(DEBUG){
clog << "DEBUG: days of leap years is: " << leap * 366 << ". Days of non leap years is: " << notLeap * 365 <<"." << endl
<< "DEBUG: The current value of Days is: " << days << endl;
}
dayFract = modf((hours / 24), &dayWhole);
if(DEBUG){
clog << "DEBUG: The value of dayFract is: " << dayFract << " and the value of dayWhole is: " << dayWhole << endl;
}
days += dayWhole;
hoursLeft = dayFract * 24;//counts the left over hours that aren't days
/*if(hoursLeft != 0){
if(hoursLeft >= 12) { //turns the left over hours into seconds since noon (12pm)
seconds = (hoursLeft - 12) * 360;
} else {
seconds = (hoursLeft + 12) * 360;
}
} else {
//seconds = 43200;
}*/
if(DEBUG){
clog <<fixed << setprecision(6) << "DEBUG: Days has a value of " << days << " hoursLeft has a value of " << hoursLeft << " while seconds has value of: " << seconds << endl;
}
//days += (seconds / 86400);
days += hoursLeft/24;
days -= 1;
days += 0.5;
if(DEBUG){
clog << "DEBUG: the julian date is: " << days << endl;
}
return days;
}
//converts the hours and year to GMST (Greenwich Mean Sidereal Time)
double GMST(int year, double hours){
//JD is the julian date (days since jan 1st, 4713 BC) and D is days since Jan 1st 2000
double D, GMST, temp, JD0;
//double hoursLeft = modf((hours/24), &temp) * 24; // hours since the previous midnight
double hoursLeft;
double JD = julian(year, hours);
//double JDmin = floor(JD) - 0.5;
//double JDmax = floor(JD) + 0.5;
JD0 = floor(JD) + 0.5;
D = (JD - 2451545.0);
double D0 = JD0 - 2451545.0;
double T = D/36525; // centuries since Jan 1st 2000 AD
hoursLeft = (JD - JD0) *24;
/*if(JD > JD0){
hoursLeft = (JD - JD0) *24;
} else {
hoursLeft = (JD0 - JD) *24;
}*/
if(DEBUG){
clog << fixed << setprecision(10) << "DEBUG: The GMST in days is: " << D << endl
<< "DEBUG: The value of JD is: " << JD << endl
<< "DEBUG: The value of JD0 is: " << JD0 << " and the value of D0 " << D0 << endl;
}
temp = 6.697374558 + (0.06570982441908*D0) + (1.00273790935*hoursLeft) + (0.000026 * pow(T, 2));
//temp =
if(DEBUG){
clog << fixed << "DEBUG: D has a value of: " << D << endl
<< "DEBUG: temp has a value of: " << temp << endl
<< "DEBUG: hours left has a value of: " << hoursLeft << endl;
}
GMST = fmod(temp, 24) ;
if(DEBUG){
clog << "DEBUG: GMST has a value of: " << GMST << endl;
}
return GMST;
}
//converts geographic coordinates to celestial coooriantes (right ascention and deckination) and retruns a deque with the names of all the constellations
//latAndLongpair has lat as the first and long as the second
//alt and azi pair has altitude as the first and azimuth as the second
pair<double,double> algorithm(double hours, pair<double, double> latAndLongPair, pair<double, double> altAndAziPair, int year){
//declaraton of variables
pair<double,double> raAndDecPair;
double phi = latAndLongPair.first * (M_PI / 180);
double hourAngle;
double alpha, sigma, temp;
double a = altAndAziPair.first * (M_PI / 180); // altitude
double A = altAndAziPair.second * (M_PI / 180); // azimuth
double lat = latAndLongPair.first; // latitude
double Long = latAndLongPair.second * (M_PI / 180); // longitude
double hoursLeft = modf((hours/24), &temp) * 24;
double Time = (GMST(year, hours) * 15) * (M_PI / 180);
temp = ((sin(a)*sin(phi)) + (cos(a) * cos(phi) * cos(A)));
sigma = asin(temp);
hourAngle = -1 * (sin(A) * cos(a)) / cos(sigma);
//hourAngle = (sin(a) - (sin(sigma)*sin(phi))) / (cos(sigma) * cos(phi));
alpha = (Time - Long) - asin(hourAngle);
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: " << (Time - Long) * (180 / M_PI) << " and the hour angle is " << hourAngle << " and the arccos of the hour angle is: " << asin(hourAngle) * (180 / M_PI) << endl;
//clog << "DEBUG: alpha has a value of: " << alpha << " and sigma has a value of: " << sigma * (180 / M_PI)<< endl;
}
raAndDecPair.first = (alpha * (180 / M_PI)) / 15;
raAndDecPair.second = sigma * (180 / M_PI);
if(DEBUG){
clog << "DEBUG: The final point is: (" << raAndDecPair.first << "," << raAndDecPair.second << ")." << endl;
}
return raAndDecPair;
}
This diff is collapsed.
#include <string>
#include <vector>
using namespace std;
int yearPrompt (); // Prompts and checks year input
string monthPrompt (); // Prompts and checks month input
int dayPrompt (string month, int year); // Prompts and checks day input
int hourPrompt (); // Prompts and checks hour input
int minutePrompt (); // Prompts and checks minute input
double dateToHour (string month, int year, int day, int hour, int minute); // Converts full date to hour
pair<double,double> altAndAziPair (); // Creates pair of alitutude and azimuth
bool isLeap (int year); // Bool check for leap year
vector <pair<double, double>> viewFinder (pair <double, double> centerPt); // function that returns the coordinates of the viewing window
vector <pair<double, double>> constellationCoordinates (); // function that stores the coordinates of all the constellations
void printConstellation (vector <pair<double,double>> constellationCoordinates, vector <pair<double,double>> window); // function to print the constellations
string constellationNamer (int index); // funciton to name all the constellations
void constellationOutputter (int index); // function to output the images of the constellations
bool restart(); // function to ask for restart options
\ No newline at end of file
......@@ -542,6 +542,60 @@ vector <pair<double, double>> constellationCoordinates () { // Function to store
coordinates.push_back(make_pair(8.6, 61.0));
coordinates.push_back(make_pair(13.7, 32.0));
coordinates.push_back(make_pair(8.6, 32.0));
//Hercules
coordinates.push_back(make_pair(18.1, 57.0));
coordinates.push_back(make_pair(16.0, 57.0));
coordinates.push_back(make_pair(18.1, 12.0));
coordinates.push_back(make_pair(16.0, 12.0));
//Cygnus
coordinates.push_back(make_pair(21.1, 53.0));
coordinates.push_back(make_pair(19.1, 53.0));
coordinates.push_back(make_pair(21.1, 29.0));
coordinates.push_back(make_pair(19.1, 29.0));
//Pavo
coordinates.push_back(make_pair(21.5, -58.0));
coordinates.push_back(make_pair(17.9, -58.0));
coordinates.push_back(make_pair(21.5, -74.0));
coordinates.push_back(make_pair(17.9, -74.0));
//Centaurus
coordinates.push_back(make_pair(14.6, -38.0));
coordinates.push_back(make_pair(11.3, -38.0));
coordinates.push_back(make_pair(14.6, -64.0));
coordinates.push_back(make_pair(11.3, -64.0));
//Canes Venatici
coordinates.push_back(make_pair(13.0, 42.0));
coordinates.push_back(make_pair(12.5, 42.0));
coordinates.push_back(make_pair(13.0, 38.0));
coordinates.push_back(make_pair(12.5, 38.0));
//Lynx
coordinates.push_back(make_pair(9.4, 60.0));
coordinates.push_back(make_pair(6.4, 60.0));
coordinates.push_back(make_pair(9.4, 37.0));
coordinates.push_back(make_pair(6.4, 37.0));
//Auriga
coordinates.push_back(make_pair(6, 46.0));
coordinates.push_back(make_pair(5, 46.0));
coordinates.push_back(make_pair(6, 30.0));
coordinates.push_back(make_pair(5, 30.0));
//Hydra
coordinates.push_back(make_pair(14.2, 8.0));
coordinates.push_back(make_pair(8.6, 8.0));
coordinates.push_back(make_pair(14.2, -35.0));
coordinates.push_back(make_pair(8.6, -35.0));
//Vela
coordinates.push_back(make_pair(10.8, -42.0));
coordinates.push_back(make_pair(8.3, -42.0));
coordinates.push_back(make_pair(10.8, -55.0));
coordinates.push_back(make_pair(8.3, -55.0));
return coordinates;
}
......@@ -560,7 +614,7 @@ void printConstellation (vector <pair<double,double>> constellationCoordinates,
inrangeCount = 0;
for (int i = 0; i < 4; i++) {
coordinateCount++;
if((windowLeft > constellationCoordinates.at(coordinateCount).first) && (constellationCoordinates.at(coordinateCount).first < windowRight)
if((windowLeft > constellationCoordinates.at(coordinateCount).first) && (constellationCoordinates.at(coordinateCount).first < windowRight) // checks if specific constellation point falls within window boundaries
&& (windowTop > constellationCoordinates.at(coordinateCount).second) && (constellationCoordinates.at(coordinateCount).second > windowBottom)) {
inrangeCount++;
}
......@@ -618,6 +672,24 @@ string constellationNamer (int index) {
return " Ursa Minor ";
case 67:
return " Ursa Major ";
case 71:
return " Hercules ";
case 75:
return " Cygnus ";
case 79:
return " Pavo ";
case 83:
return " Centaurus ";
case 87:
return " Canes Venatici ";
case 91:
return " Lynx ";
case 95:
return " Auriga ";
case 99:
return " Hydra ";
case 103:
return " Vela ";
default:
return " Unknown constellation ";
}
......@@ -694,6 +766,42 @@ void constellationOutputter (int index) {
a.UrsaMajor16();
cout << endl;
break;
case 71:
a.Hercules17();
cout << endl;
break;
case 75:
a.Cygnus18();
cout << endl;
break;
case 79:
a.Pavo19();
cout << endl;
break;
case 83:
a.Centaurus20();
cout << endl;
break;
case 87:
a.CanesVenatici21();
cout << endl;
break;
case 91:
a.Lynx22();
cout << endl;
break;
case 95:
a.Auriga23();
cout << endl;
break;
case 99:
a.Hydra24();
cout << endl;
break;
case 103:
a.Vela25();
cout << endl;
break;
default:
cout << endl;
}
......@@ -706,19 +814,18 @@ bool restart(){
cout << "Would you like to quit? (y/n): " << endl;
do{
cin >> input;
tolower(input);
if(input != 'y' || input != 'n'){
if(input != 'y' && input != 'n'){
goodInput = false;
cerr << "Error: Invalid input. Try again." << endl;
cin.clear();
} else {
goodInput = true;
}
}while(!goodInput);
} while(!goodInput);
if(input == 'y'){
if (input == 'y'){
return false;
} else {
return true;
exit(0);
}
}
\ No newline at end of file
......@@ -13,10 +13,8 @@ int hourPrompt (); // Prompts and checks hour input
int minutePrompt (); // Prompts and checks minute input
double dateToHour (string month, int year, int day, int hour, int minute); // Converts full date to hour
pair<double,double> altAndAziPair (); // Creates pair of alitutude and azimuth
bool isLeap (int year); // Bool check for leap year
......@@ -29,4 +27,6 @@ void printConstellation (vector <pair<double,double>> constellationCoordinates,
string constellationNamer (int index); // funciton to name all the constellations
void constellationOutputter (int index); // function to output the images of the constellations
\ No newline at end of file
void constellationOutputter (int index); // function to output the images of the constellations
bool restart(); // function to ask for restart options
\ No newline at end of file
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