async void AnimateBackground()
{
while (true)
{
// calculate positions using Law of sines
var x = BackgroundScale * (float)Math.Sin(MathHelper.DegreesToRadians(90 - BackgroundRotationX));
var y = BackgroundScale * (float)Math.Sin(MathHelper.DegreesToRadians(BackgroundRotationX)) + FlightHeight;
var moveTo = x + 1f; //a small adjusment to hide that gap between two tiles
var h = (float)Math.Tan(MathHelper.DegreesToRadians(BackgroundRotationX)) * moveTo;
await Task.WhenAll(FrontTile.RunActionsAsync(new MoveBy(1 / BackgroundSpeed, new Vector3(0, -moveTo, -h))),
RearTile.RunActionsAsync(new MoveBy(1 / BackgroundSpeed, new Vector3(0, -moveTo, -h))));
//switch tiles
var tmp = FrontTile;
FrontTile = RearTile;
RearTile = tmp;
RearTile.Position = new Vector3(0, x, y);
}
}
private void SaveImageForeground(bool failed, string backcontent)
{
if (IsolatedStorageSettings.ApplicationSettings.Contains("oldtilestyle") && (bool)IsolatedStorageSettings.ApplicationSettings["oldtilestyle"])
{
OldSmallTile.SaveTile(failed, _balance);
}
else
{
SmallTile.SaveTile(failed, _balance);
}
#if (DEBUG)
Debug.WriteLine("Live tile: Small image created");
#endif
FrontTile.SaveTile(failed, _balance);
#if (DEBUG)
Debug.WriteLine("Live tile: Front image created");
#endif
BackTile.SaveTile(failed, _balance, backcontent);
#if (DEBUG)
Debug.WriteLine("Live tile: Back image created");
#endif
}