Function shell

shell(id, source, thickness, result?, deps?, opts?): Shell
Parameters
- id: string
- source: Selector
- thickness: Scalar
- Optional result: string
- Optional deps: string[]
- Optional opts: {
  direction?: "inside" | "outside";
  openFaces?: Selector[];
  }
  - Optional direction?: "inside" | "outside"
  - Optional openFaces?: Selector[]
Returns Shell