Lighting is an important factor in conveying the design intent.
When designing a building, you can place artificial lights on its exterior and interior to address lighting needs and plan the visual impact of lights. You can define lighting fixtures and their light sources, placing them in the building model for best effect.
For artificial light, you add lighting fixtures to the building model.
For natural light, you specify the direction of the sunlight, or the location, date, and time of day to achieve a realistic representation of sunlight on the building.
