The objective of this chapter is to show all of the steps required to set up a physical sky with YafaRay and make a realistic render with our steampunk spacecraft. Before anything, we have to open the YafaRay exporter script in the Scripts folder of Blender 3D. This folder was already created in Chapter 5, Rendering the Project with YafaRay, when we set up the render for our first Incredible Machine project. In the YafaRay exporter, we will find a tab called World, which is where we will find the information and tools to create a physical sky.
After choosing the World tab, a selector will appear and then we will choose one of the background types available.
All options present different settings and effects on the scene based on the way we change the parameters from each one of them. Different backgrounds produce different effects. Let's take a look at the background types.