extrusion

Makes a vector extrusion. An extrusion is a solid of a constant cross section along a direction. It is defined by a polygon or a region and a vector that defines the direction. Usually this vector would be (0, 0, height). If section is an unclosed polygon it is closed automatically. A negative height drops the solid below the section plane. The name come from the mechanical operation of extruding material through a die to form pipes, etc. The author of this program spent a month operating a PVC pipe extrusion machine and has a special connection this type of solid.

section : ObjectSet
Polygons or a regions to extrude

vector : Vector
Extrusion vector