Function getSunlightDirection

docs/app/js/sanddance-app.js:95796–95804

(timestamp, latitude, longitude)

    };
}
function getSunlightDirection(timestamp, latitude, longitude) {
    var _getSolarPosition = getSolarPosition(timestamp, latitude, longitude), azimuth = _getSolarPosition.azimuth, altitude = _getSolarPosition.altitude;
    var azimuthN = azimuth + Math.PI;
    return [
        -Math.sin(azimuthN),
        -Math.cos(azimuthN),
        -Math.sin(altitude)
    ];
}
function toJulianDay(timestamp) {
    return timestamp / DAY_IN_MS - 0.5 + JD1970;
}