Spheres R input of the
Fatten component let’s you set the radii for each node at the center of each sphere. So you just have to provide the appropriate sphere for each node of your Steiner tree. The spheres obviously need to be in the same order as the nodes!
What you need to think about is, exactly which nodes you want to make bigger and how to select those. Maybe you only want to thicken the end nodes, which touch the ground? Or you might prefer to turn all end nodes into “bulbs”? You could also provide bigger radii for some nodes within the tree!
Furthermore, you’d need a strategy to define the radii spheres for the other nodes. Maybe you want to define gradually smaller radii for farther away nodes? Or even introduce other parameter that the construction could profit from structurally?
You can smooth a quad mesh with the
wbCatmullClark component from Weaverbird.