The first one will be a Sun Light that you placed in a location where you

want to simulate the Sun position. Also, enable shadows in the Sun

settings and change the Angle value to a number close to zero like

"0.05" to get hard edge shadows (Figure 6.33).

Figure 6.33 - Sun settings

You can use the R key to rotate the Sun and find a location where the

light beams will more efficiently enter your scene.

In some cases, using a Sun Light alone won't add the necessary energy

to the scene. For that reason, we need a second source. Using Area

lights in each window will also help with that type of project.

Disable shadow casting for those lights and also scale each Area Light

until they fit the same size of each window (Figure 6.34).