Rendering in SketchUp

Simulated Lighting
Chapter
24

---

384
Part 5: The Iterative Rendering Process
Fig. 24.2: 
Easter Seals SketchUp-a-Space Competition 2012, winning entry (model by Kala Letts, Twilight Render v1)
Fig. 24.3: 
Simulated lights are used to illuminate the scene (Shaderlight).

---

385
Chapter 24: Simulated Lighting
Fig. 24.4: 
Exterior rendering with simulated lights (SU Podium)
Simulated lighting is a complex topic in terms of rendering. The many options and almost 
infinite combinations of lighting found in the real world result in a higher learning curve when 
compared to other rendering methods and topics. To help you achieve a general understanding 
of how to create and use simulated light, this chapter reviews the following:
3
3
Universal approaches
3
3
Types of lighting
3
3
Placing and editing lights
3
3
Render times
3
3
General simulated lighting strategies
Every IRP will let you incorporate point lights, spotlights, and IES profiles. The IRPs 
approach insertion, placement, and light settings in a nearly identical fashion. Each IRP 
includes one or more lighting menus to control light settings. The simulated lighting settings 
for particular IRPs are reviewed in the IRP-specific simulated lighting chapters.
types of Lighting
Point lights, spotlights, light-emitting materials (LEMs), and IES profile lighting comprise 
the backbone of simulated light in renderings. Collectively, these lighting elements are called 
emitters. As strange as it seems, none of these lights is self-illuminating (Fig. 24.5, Fig. 24.6). 
They cast light and make visible their surroundings—i.e., surfaces that are reflecting the light 
back. They are not visible themselves, as is a typical lightbulb.

---