private void _CalculateSunriseSunset(double latitude, double longitude, out DateTime sunrise, out DateTime sunset)
{
//equation from https://en.wikipedia.org/wiki/Sunrise_equation#Complete_calculation_on_Earth
//calculate current julian day. don't want extra hours so we chop off any decimals from the current julian date
double n = (double)((int)DateTimeToJulianDate(DateTime.Now.ToUniversalTime())) - 2451545.0 + 0.0008;
//calculate mean solar noon
double msn = n - (longitude / 360.0);
//calculate solar mean anomaly
double sma = (357.5291 + 0.98560028 * msn) % 360;
//equation of the center
double center = (1.9148 * SinDegrees(sma)) + (0.02 * SinDegrees(2 * sma)) + (0.0003 * SinDegrees(3 * sma));
//ecliptic longitude
double elong = (sma + center + 180 + 102.9372) % 360;
//solar transit
double strans = 2451545.0 + msn + (0.0053 * SinDegrees(sma)) - (0.0069 * SinDegrees(2 * elong));
//declination of the sun and hour-angle
double declination = MathHelpers.RadiansToDegrees(Math.Asin(SinDegrees(elong) * SinDegrees(23.55)));
//hour angle
double hAngle = MathHelpers.RadiansToDegrees(Math.Acos((SinDegrees(-0.83) - SinDegrees(latitude) * SinDegrees(declination)) / (Math.Cos(MathHelpers.DegreesToRadians(latitude)) * Math.Cos(MathHelpers.DegreesToRadians(declination)))));
//julian date of sunrise
double rise = strans - (hAngle / 360);
double set = strans + (hAngle / 360);
sunrise = JulianDateToUTC(rise).ToLocalTime();
sunset = JulianDateToUTC(set).ToLocalTime();
}
private double SinDegrees(double degrees)
{
return(Math.Sin(MathHelpers.DegreesToRadians(degrees)));
}
private void _InitializeApp(Window window)
{
DisplayController dispController = DisplayController.Instance;
_LoadAppData();
if (m_startMinimized)
{
window.Hide();
window.ShowInTaskbar = false;
}
/*wait for the display controller to finish initializing before proceeding.
* if something went wrong this call will throw a win32exception*/
dispController.Initialization.Wait();
WindowTitle = "Unblind " + m_versionMajor.ToString() + "." + m_versionMinor.ToString() + "." + m_versionIteration.ToString();
if (dispController.AttachedDisplays.Count > 0)
{
bool supportsBrightness = true;
foreach (Display display in dispController.AttachedDisplays)
{
if (m_firstRun && supportsBrightness && display.SupportsBrightness() == false)
{
supportsBrightness = false;
MessageBox.Show("It appears that one or more of your displays do not support the DDC/CI protocol required to change the brightness via software. Unblind may or may not be able to control these displays.", "Hmm...", MessageBoxButton.OK);
}
//determine the highest minimum brightness and lowest maximum brightness among all displays and use these as the brightness limits
if (display.MinBrightness > m_minDisplayBrightness)
{
MinDisplayBrightness = MathHelpers.Greater(display.MinBrightness, (uint)1);
}
if (display.MaxBrightness > m_maxDisplayBrightness)
{
MaxDisplayBrightness = MathHelpers.Greater(display.MaxBrightness, (uint)1);
}
if (display.SupportsBrightness() == false)
{
NoSupportDetected = true;
}
}
}
else if (dispController.IntegratedDisplaySupported == true)
{
MinDisplayBrightness = 0;
MaxDisplayBrightness = 100;
}
if (dispController.AttachedDisplays.Count > 1 || (dispController.AttachedDisplays.Count >= 1 && dispController.IntegratedDisplaySupported == true))
{
MultipleDisplaysConnected = true;
}
dispController.OnDisplayRefesh += _OnDisplayRefresh;
CurrentBrightnessTransitionStatus = DimmerStatus.Idle;
_UpdateTimeToNextPeriod();
m_brightnessDimmer.SetDisplayBrightness((m_brightnessScheduler.CurrentTimePeriod == TimePeriod.Day) ? (uint)m_brightnessScheduler.DayBrightness : (uint)m_brightnessScheduler.NightBrightness);
m_systemClockTimer.Start();
}
