SourceAmbientNaturalLight – Creating a natural light ambient source Last update: 29.07.2026 The following script sample shows you an example on how to create a Natural Light Ambient Source. naturalLight = SpeosSim.SourceAmbientNaturalLight.Create() naturalLight.ZenithDirection.Set(GetRootPart().CoordinateSystems[0].Axes[1]) naturalLight.NorthDirection.Set(GetRootPart().CoordinateSystems[0].Axes[0]) naturalLight.NorthDirectionReverse = True naturalLight.TimeZone = "OPTIS, France" naturalLight.DateTime = DateTime(2009, 7, 14, 12, 0, 0)