187 lines
7.3 KiB
JavaScript
187 lines
7.3 KiB
JavaScript
import {
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__commonJS
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} from "./chunk-BUSYA2B4.js";
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// node_modules/suncalc/suncalc.js
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var require_suncalc = __commonJS({
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"node_modules/suncalc/suncalc.js"(exports, module) {
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(function() {
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"use strict";
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var PI = Math.PI, sin = Math.sin, cos = Math.cos, tan = Math.tan, asin = Math.asin, atan = Math.atan2, acos = Math.acos, rad = PI / 180;
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var dayMs = 1e3 * 60 * 60 * 24, J1970 = 2440588, J2000 = 2451545;
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function toJulian(date) {
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return date.valueOf() / dayMs - 0.5 + J1970;
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}
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function fromJulian(j) {
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return new Date((j + 0.5 - J1970) * dayMs);
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}
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function toDays(date) {
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return toJulian(date) - J2000;
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}
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var e = rad * 23.4397;
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function rightAscension(l, b) {
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return atan(sin(l) * cos(e) - tan(b) * sin(e), cos(l));
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}
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function declination(l, b) {
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return asin(sin(b) * cos(e) + cos(b) * sin(e) * sin(l));
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}
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function azimuth(H, phi, dec) {
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return atan(sin(H), cos(H) * sin(phi) - tan(dec) * cos(phi));
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}
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function altitude(H, phi, dec) {
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return asin(sin(phi) * sin(dec) + cos(phi) * cos(dec) * cos(H));
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}
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function siderealTime(d, lw) {
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return rad * (280.16 + 360.9856235 * d) - lw;
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}
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function astroRefraction(h) {
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if (h < 0)
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h = 0;
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return 2967e-7 / Math.tan(h + 312536e-8 / (h + 0.08901179));
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}
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function solarMeanAnomaly(d) {
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return rad * (357.5291 + 0.98560028 * d);
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}
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function eclipticLongitude(M) {
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var C = rad * (1.9148 * sin(M) + 0.02 * sin(2 * M) + 3e-4 * sin(3 * M)), P = rad * 102.9372;
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return M + C + P + PI;
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}
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function sunCoords(d) {
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var M = solarMeanAnomaly(d), L = eclipticLongitude(M);
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return {
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dec: declination(L, 0),
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ra: rightAscension(L, 0)
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};
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}
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var SunCalc = {};
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SunCalc.getPosition = function(date, lat, lng) {
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var lw = rad * -lng, phi = rad * lat, d = toDays(date), c = sunCoords(d), H = siderealTime(d, lw) - c.ra;
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return {
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azimuth: azimuth(H, phi, c.dec),
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altitude: altitude(H, phi, c.dec)
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};
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};
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var times = SunCalc.times = [
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[-0.833, "sunrise", "sunset"],
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[-0.3, "sunriseEnd", "sunsetStart"],
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[-6, "dawn", "dusk"],
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[-12, "nauticalDawn", "nauticalDusk"],
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[-18, "nightEnd", "night"],
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[6, "goldenHourEnd", "goldenHour"]
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];
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SunCalc.addTime = function(angle, riseName, setName) {
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times.push([angle, riseName, setName]);
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};
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var J0 = 9e-4;
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function julianCycle(d, lw) {
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return Math.round(d - J0 - lw / (2 * PI));
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}
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function approxTransit(Ht, lw, n) {
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return J0 + (Ht + lw) / (2 * PI) + n;
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}
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function solarTransitJ(ds, M, L) {
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return J2000 + ds + 53e-4 * sin(M) - 69e-4 * sin(2 * L);
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}
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function hourAngle(h, phi, d) {
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return acos((sin(h) - sin(phi) * sin(d)) / (cos(phi) * cos(d)));
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}
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function observerAngle(height) {
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return -2.076 * Math.sqrt(height) / 60;
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}
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function getSetJ(h, lw, phi, dec, n, M, L) {
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var w = hourAngle(h, phi, dec), a = approxTransit(w, lw, n);
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return solarTransitJ(a, M, L);
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}
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SunCalc.getTimes = function(date, lat, lng, height) {
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height = height || 0;
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var lw = rad * -lng, phi = rad * lat, dh = observerAngle(height), d = toDays(date), n = julianCycle(d, lw), ds = approxTransit(0, lw, n), M = solarMeanAnomaly(ds), L = eclipticLongitude(M), dec = declination(L, 0), Jnoon = solarTransitJ(ds, M, L), i, len, time, h0, Jset, Jrise;
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var result = {
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solarNoon: fromJulian(Jnoon),
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nadir: fromJulian(Jnoon - 0.5)
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};
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for (i = 0, len = times.length; i < len; i += 1) {
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time = times[i];
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h0 = (time[0] + dh) * rad;
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Jset = getSetJ(h0, lw, phi, dec, n, M, L);
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Jrise = Jnoon - (Jset - Jnoon);
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result[time[1]] = fromJulian(Jrise);
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result[time[2]] = fromJulian(Jset);
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}
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return result;
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};
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function moonCoords(d) {
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var L = rad * (218.316 + 13.176396 * d), M = rad * (134.963 + 13.064993 * d), F = rad * (93.272 + 13.22935 * d), l = L + rad * 6.289 * sin(M), b = rad * 5.128 * sin(F), dt = 385001 - 20905 * cos(M);
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return {
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ra: rightAscension(l, b),
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dec: declination(l, b),
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dist: dt
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};
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}
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SunCalc.getMoonPosition = function(date, lat, lng) {
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var lw = rad * -lng, phi = rad * lat, d = toDays(date), c = moonCoords(d), H = siderealTime(d, lw) - c.ra, h = altitude(H, phi, c.dec), pa = atan(sin(H), tan(phi) * cos(c.dec) - sin(c.dec) * cos(H));
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h = h + astroRefraction(h);
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return {
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azimuth: azimuth(H, phi, c.dec),
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altitude: h,
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distance: c.dist,
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parallacticAngle: pa
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};
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};
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SunCalc.getMoonIllumination = function(date) {
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var d = toDays(date || /* @__PURE__ */ new Date()), s = sunCoords(d), m = moonCoords(d), sdist = 149598e3, phi = acos(sin(s.dec) * sin(m.dec) + cos(s.dec) * cos(m.dec) * cos(s.ra - m.ra)), inc = atan(sdist * sin(phi), m.dist - sdist * cos(phi)), angle = atan(cos(s.dec) * sin(s.ra - m.ra), sin(s.dec) * cos(m.dec) - cos(s.dec) * sin(m.dec) * cos(s.ra - m.ra));
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return {
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fraction: (1 + cos(inc)) / 2,
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phase: 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI,
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angle
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};
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};
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function hoursLater(date, h) {
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return new Date(date.valueOf() + h * dayMs / 24);
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}
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SunCalc.getMoonTimes = function(date, lat, lng, inUTC) {
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var t = new Date(date);
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if (inUTC) t.setUTCHours(0, 0, 0, 0);
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else t.setHours(0, 0, 0, 0);
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var hc = 0.133 * rad, h0 = SunCalc.getMoonPosition(t, lat, lng).altitude - hc, h1, h2, rise, set, a, b, xe, ye, d, roots, x1, x2, dx;
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for (var i = 1; i <= 24; i += 2) {
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h1 = SunCalc.getMoonPosition(hoursLater(t, i), lat, lng).altitude - hc;
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h2 = SunCalc.getMoonPosition(hoursLater(t, i + 1), lat, lng).altitude - hc;
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a = (h0 + h2) / 2 - h1;
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b = (h2 - h0) / 2;
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xe = -b / (2 * a);
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ye = (a * xe + b) * xe + h1;
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d = b * b - 4 * a * h1;
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roots = 0;
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if (d >= 0) {
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dx = Math.sqrt(d) / (Math.abs(a) * 2);
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x1 = xe - dx;
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x2 = xe + dx;
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if (Math.abs(x1) <= 1) roots++;
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if (Math.abs(x2) <= 1) roots++;
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if (x1 < -1) x1 = x2;
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}
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if (roots === 1) {
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if (h0 < 0) rise = i + x1;
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else set = i + x1;
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} else if (roots === 2) {
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rise = i + (ye < 0 ? x2 : x1);
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set = i + (ye < 0 ? x1 : x2);
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}
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if (rise && set) break;
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h0 = h2;
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}
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var result = {};
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if (rise) result.rise = hoursLater(t, rise);
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if (set) result.set = hoursLater(t, set);
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if (!rise && !set) result[ye > 0 ? "alwaysUp" : "alwaysDown"] = true;
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return result;
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};
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if (typeof exports === "object" && typeof module !== "undefined") module.exports = SunCalc;
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else if (typeof define === "function" && define.amd) define(SunCalc);
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else window.SunCalc = SunCalc;
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})();
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}
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});
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export default require_suncalc();
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//# sourceMappingURL=suncalc.js.map
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