In the section “Baking a Normal Map from a Procedural Mesh” in Chapter 4 , you learned the basics of constructing geometry node trees like extruding and transforming primitives, distributing them as instances over another mesh, and sampling the components (or attributes) of an object like the points making up a curve. In addition, you learned how to set up inputs through the Group Input node to allow user control of the tree’s generation parameters. In this chapter, we’ll continue to build on this trajectory and generate more complex meshes.