Joins faces into a shell by sewing their edges together where they meet within the tolerance.
Faces further apart than the tolerance stay unjoined, so a closed shell may come out open; a larger tolerance sews more. A lone face comes back as that face, and faces that do not all join as a compound of what did.
The faces and the sewing tolerance
The shell, or the face or compound when the faces do not join into one
Sews faces and shells as sewFaces does, and reports per shape given which faces of the sewn
shape each of its faces became.
histories[i].faces[j] lists the result faces face j of shape i became, as
shapes.face.getFaces numbers both.
The faces or shells and the sewing tolerance
The sewn shape and one history per shape given
Collects diagnostic facts about a shell: whether it is valid, how many faces and edges it has, its total area and, for every face, the surface type, degrees, control point counts, bounds and area.
An empty or null shape gives a report marked invalid with zero counts.
The shell to inspect
The report with counts, area and one entry per face
Measures the total area of all the faces of a shell, in square model units.
The shell
The surface area
Shells in OpenCascade: sets of faces joined along their edges. A shell that closes on itself with no gaps bounds a volume and can become a solid with
shapes.solid.fromClosedShell; an open shell is a surface with a rim. Build one by sewing faces together, check whether it is closed and measure its area.