Group inputs

Let’s start adding group inputs to our node tree. This is an important step of the procedural workflow, allowing us to obtain an easy-to-modify procedural object with values accessible from the modifier stack.

There are four values that we want to include in our Group Input node:

• The Probability input of the Random Value node
• The Seed value of the Random Value node
• The Level input of the Subdivide Mesh node
• The Radius value of the Curve Circle node

As mentioned in previous chapters, we can add group inputs by sliding the gray node connection from the Group Input node to the inputs that we want to include.

Once you’ve added all these group inputs, it’s time to rename them. Open the right-hand panel of the Geometry Node editor, head to the Group tab, and start renaming the entries to the following names:

• Randomization
• Seed
• Detail
• Thickness

This is how your modifier should look after making these...