Documentation / Node reference / geo nodes
geo/SDFOnion
Hollows out an SDF object into a shell.
Sdf Operations
Replaces each input SDF object's solid with a shell straddling its surface, `thickness` on each side. The shell is CLOSED: to see inside it, cut it open with a geo/SDFBoolean subtraction, which is the usual way to get a cup or a bowl. Repeating the node nests shells inside one another. It works on 2D and 3D fields alike. Non-SDF objects pass through unchanged.
Parameters
| Name | Type | What it does |
|---|---|---|
| thickness | Float | Half the shell's wall thickness: it reaches this far each side of the original surface. |
See also
This page is generated from the engine, so it describes the release you can download. The same text is in the editor's Help panel next to the node itself.