This tutorial shows you how to create geometry that will act as preserve geometry and obstacle geometry. Refer to Tutorial: GE Bracket quick start to remind yourself how to assign the preserve and obstacle geometry types.
It is imperative for the generative solution that you define where you want geometry. For critical components that you want to preserve, you create preserve geometry.
When you have a starting model, you can define which parts of that model you want to preserve, and which parts the generative solution can redesign. Bolt holes that attach an object to another, are a good example of geometry that you may want to preserve.
It is as important to determine where you don't want geometry, as where you do want it. It's not enough to include the preserved geometry holes. You also need to ensure no geometry is created inside the preserves. Create obstacle geometry where you don't want geometry to be created.
In this tutorial, you
Starting shape model (left), Starting shape model with the additional geometry created to act as preserve and obstacle geometry (right).