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Kiritan Flux 2018-12-09 13:02:46 +01:00
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/**
* @preserve Copyright (c) 2018 T. F. Raaion, www.sublunar.space
* License MIT: http://www.opensource.org/licenses/MIT
*
* SUBLUNAR ALMANAC
*/
var SL = SL || {};
/**
* Astronomical and astrological calculations
*/
SL.Astro = (function() {
/**
* Astronomical calculations
* @public {Object} moon - holds definitions and labels
* @public {function} moonPhase() - calculate moon phase from phase angle and lunar day
*/
var Nomy = (function() {
/**
* moon object with definitions
*/
var moon = {
phase : {
symbol : [ "void", "🌑", "🌒", "🌓", "🌔", "🌕", "🌖", "🌗", "🌘" ],
name : ["void", "new", "waxing crescent", "first quarter", "waxing gibbous", "full", "waning gibbous", "last quarter", "waning crescent" ]
}
}
/**
* moonPhase function returns the current phase of the moon
* @param {Object} lunar - Object with lunar day, phase angle and phase (% illumination) of a moment
* @return {int} phase - number from 1 (new moon) to 5 (full moon) to 8 (waning crescent)
*/
function moonPhase(lunar) {
var sphase;
var g;
var phase;
if ( lunar.angle < 180 ) sphase = "new";
if ( lunar.angle < 168 ) sphase = "crescent";
if ( lunar.angle < 95 ) sphase = "quarter";
if ( lunar.angle < 85 ) sphase = "gibbous";
if ( lunar.angle < 12 ) sphase = "full";
// sweph returns the phase angle just between 0° and 180°, so in order
// to find whether it is waxing or waning, we utilize the lunar day:
if ( lunar.day < 16 ) g = "waxing";
if ( lunar.day >= 16 ) g = "waning";
if ( sphase == "new" ) phase = 1;
if ( sphase == "full" ) phase = 5;
if ( sphase == "quarter" && g == "waxing") phase = 3;
if ( sphase == "quarter" && g == "waning") phase = 7;
if ( sphase == "crescent" && g == "waxing" ) phase = 2;
if ( sphase == "crescent" && g == "waning" ) phase = 8;
if ( sphase == "gibbous" && g == "waxing" ) phase = 4;
if ( sphase == "gibbous" && g == "waning" ) phase = 6;
return phase;
}
return {
moonPhase: moonPhase,
moon : moon
}
}());
/**
* Astrological calculations
* @public {Object} planet - holds definitions and labels
* @public {Object} zodiac - holds definitions and labels
* @public {function} zodToDeg() - calculates longitudes in the format "02° Aries 12" to float degrees
* @public {function} getZodiac() - returns the zodiac sign for given degrees (tropical or sidereal)
*/
var Logy = (function() {
/**
* planet object with definitions
*/
var planet = {
name : [ "void", "Sun", "Moon", "Mars", "Mercury", "Jupiter", "Venus", "Saturn" ],
ruler : {
greek : [ "void", "Helios", "Selene", "Ares", "Hermes", "Zeus", "Aphrodite", "Kronos" ],
roman: [ "void", "Sol", "Luna", "Mars", "Mercury", "Jupiter", "Venus", "Saturn" ]
},
symbol : [ "void", "☉", "☽", "♂", "☿", "♃", "♀", "♄" ],
day : [ "void", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
order : [ 0, 1, 6, 4, 2, 7, 5, 3 ]
}
/**
* zodiac object with definitions
*/
var zodiac = {
name : [ "void", "Aries", "Taurus", "Gemini", "Cancer", "Leo", "Virgo", "Libra", "Scorpio", "Sagittarius", "Capricorn", "Aquarius", "Pisces" ],
symbol : [ "void", "♈", "♉", "♊", "♋", "♌", "♍", "♎", "♏", "♐", "♑", "♒", "♓" ],
ruler : [ 0, 3, 6, 4, 2, 1, 4, 6, 3, 5, 7, 7, 5 ]
}
/**
* zodToDeg function converts zodiacal degree notation to degrees
* @param {string} zcoord - a string in zodiacal degree notation, e.g. "14° Taurus 34"
* @return {float} degrees
*/
function zodToDeg(zcoord) {
var zdef = zodiac; // global variable needs to be declared before using this function
if(zcoord) {
var z = zcoord.split(" ");
var m = 0;
for (var i = 0, len = 13; i < len; i++) {
if (zdef.name[i] == z[1] || zdef.symbol[i] == z[1] ) m = i-1;
}
return parseFloat(z[0]) + m * 30 + parseFloat(z[2]) / 60;
}
}
/**
* degToZod function converts degrees to zodiacal degree notation
* @param {string} deg - degrees
* @param {int} - 1 for sidereal zodiac, anything else for tropical
* @return {float} a string in zodiacal degree notation, e.g. "14° Taurus 34"
*/
function degToZod(deg, sidereal =-1) {
var zdef = zodiac;
if ( $("#zodiac").is(':checked') && sidereal != 0 ) sidereal = 1;
if ( sidereal == 1 ) {
deg -= 24.11722222222; // degrees difference between tropical and sidereal
}
if ( deg >= 360.0 ) deg = Math.abs(deg - 360.0);
var zod = getZodiac(deg, 0);
var diff = ( zod.sign - 1 ) * 30.0;
var degrees = deg - diff;
var first = Math.floor(degrees);
var second = Math.round((degrees - first) * 60.0);
return first+" "+zdef.symbol[zod.sign]+" "+second;
}
/**
* getZodiac function returns the zodiac sign and decan for a given longitude
* @param {float} deg - decimal longitude degrees
* @param {int} sidereal - 1 for sidereal zodiac, other number for tropical zodiac
* @return {Object} obj.sign - zodiac sign 1-12, obj.decan - zodiac decan 1-36
*/
function getZodiac(deg, sidereal = -1) {
if ( $("#zodiac").is(':checked') && sidereal != 0 ) sidereal = 1;
if ( sidereal == 1 ) {
deg -= 24.11722222222; // degrees difference between tropical and sidereal
}
if ( deg >= 360.0 ) deg = Math.abs(deg - 360.0);
deg += 0.0001; // added to compensate rounding, resulting in 0° to 29.99° being Aries instead of 0° to 30°
var obj = {
sign: Math.ceil(deg / 30),
decan: Math.ceil(deg / 10)
}
return obj;
}
return {
planet : planet,
zodiac : zodiac,
zodToDeg : zodToDeg,
degToZod : degToZod,
getZodiac : getZodiac
}
}());
return {
Nomy : Nomy,
Logy : Logy,
}
}());