Originally Posted by mbanck

So I took a look at http://en.wikipedia.org/wiki/Sunrise_equation and http://users.electromagnetic.net/bu/...unrise-set.php

The drive-qml approximation for the declination is legit, it is equation 3 from http://solardat.uoregon.edu/SolarRadiationBasics.html

What seems to be missing is probably a better approximation of the sun transit, i.e. the true sun noon.

Otherwise, just some signs were apparently wrong in the sunrise/sunset calculation, with that fixed, it works well enough for me.

This is the patch: http://paste.debian.net/download/178685

Or inline:

Code:

--- /usr/lib/drive-qml/models/MapSettingsModel.qml.orig
+++ /usr/lib/drive-qml/models/MapSettingsModel.qml
@@ -135,8 +135,8 @@
         var lat_rad = pos.latitude * (Math.PI/180);
         var declination = (23.4*Math.PI)/180 * Math.sin(2*Math.PI * (284+dayOfTheYear)/365);
         var omega = Math.acos(-Math.tan(declination) * Math.tan(lat_rad));
-        var sunset = 12 - (1/15) * omega * (180/Math.PI) - pos.longitude/15 + today.getTimezoneOffset()/60;
-        var sunrise = 24  - sunset; //(1/15) * omega * (180/Math.PI) - pos.longitude/15 + today.getTimezoneOffset()/60;
+        var sunset = 12 + (1/15) * omega * (180/Math.PI) - pos.longitude/15 - today.getTimezoneOffset()/60;
+        var sunrise = 12  - (1/15) * omega * (180/Math.PI) - pos.longitude/15 - today.getTimezoneOffset()/60;
 
         console.log("Sunset:" + sunset);
         console.log("Sunrise:" + sunrise);

Originally Posted by MaikEF

i think, the better way to switch day/night is to use the lightsensor... it´s more helpfull in tunnel...
is there a possibility to realice so?

Originally Posted by jimthefly

I would also prefer a solution in help of the light sensor. I think this is a better way to switch between day and night.

Originally Posted by nailwood

When you click on the toggle item for the traffic mode in the main settings screen, you can see that the label changes to "Hide traffic" for a fraction of a second before the screen is closed - But when the settings screen is opened again, the label is still set to "Show traffic". So I found out this small UI improvement:

In assistanceModeSettingsPage.qml, line 207 (inside the block "onBeforeShow:"), you can add the following line:

buttonModel.updateTraffic();

This will show the label "Hide traffic" and the corresponding icon if traffic has been activated.