Sky model that uses the SilverLining SDK from SunDog Software.
SilverLining SDK requires a valid license code. Without a username and license code, the SDK will run in “demo mode” and will display a dialog box every five minutes.
<map> <options> <sky driver = "silverlining" hours = "0.0" ambient = "0.05" user = "myname" license_code = "mycode" clouds = "false" clouds_max_altitude = "0.0 />
user: User name the SilverLining SDK license license_code: License code the SilverLining SDK clouds: Whether to render a local clouds layer clouds_max_altitude: Maximumum camera altitude at which to start rendering the clouds layer
hours: Time of day; UTC hours [0..24] ambient: Minimum ambient lighting level [0..1] to apply to dark areas of the terrain