solar-calc/lib/solarCalc.js

A sunrise/sunset/moonrise/moonset calculator

"use strict";

var _createClass = (function () { function defineProperties(target, props) { for (var key in props) { var prop = props[key]; prop.configurable = true; if (prop.value) prop.writable = true; } Object.defineProperties(target, props); } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

var _classCallCheck = function (instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };

var Sun = require("./sun.js");
var Moon = require("./moon.js");

var degreesBelowHorizon = {
  sunrise: 0.833,
  sunriseEnd: 0.3,
  twilight: 6,
  nauticalTwilight: 12,
  night: 18,
  goldenHour: -6
};

var SolarCalc = (function () {
  function SolarCalc(date, latitude, longitude) {
    _classCallCheck(this, SolarCalc);

    this.date = date;
    this.lat = latitude;
    this.longitude = longitude;

    this.sun = new Sun(date, latitude, longitude);
    this.moon = new Moon(date, latitude, longitude);
  }

  _createClass(SolarCalc, {
    solarNoon: {
      get: function () {
        return this.sun.solarNoon;
      }
    },
    sunrise: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.sunrise, true);
      }
    },
    sunset: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.sunrise);
      }
    },
    sunriseEnd: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.sunriseEnd, true);
      }
    },
    sunsetStart: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.sunriseEnd, false);
      }
    },
    civilDawn: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.twilight, true);
      }
    },
    dawn: {
      get: function () {
        return this.civilDawn;
      }
    },
    civilDusk: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.twilight, false);
      }
    },
    dusk: {
      get: function () {
        return this.civilDusk;
      }
    },
    nauticalDawn: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.nauticalTwilight, true);
      }
    },
    nauticalDusk: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.nauticalTwilight, false);
      }
    },
    nightStart: {
      get: function () {
        return this.astronomicalDusk;
      }
    },
    astronomicalDusk: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.night, false);
      }
    },
    astronomicalDawn: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.night, true);
      }
    },
    nightEnd: {
      get: function () {
        return this.astronomicalDawn;
      }
    },
    goldenHourStart: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.goldenHour, false);
      }
    },
    goldenHourEnd: {
      get: function () {
        return this.sun.timeAtAngle(degreesBelowHorizon.goldenHour, true);
      }
    },
    lunarDistance: {
      get: function () {
        return this.moon.distance;
      }
    },
    lunarIlluminosity: {
      get: function () {
        return this.moon.illuminosity;
      }
    }
  });

  return SolarCalc;
})();

module.exports = SolarCalc;