Base Surface

A Base Surface is formed by one or multiple planar surfaces of arbitrary shape. The base surface can contain openings, internal curves , and internal points.

This solid is then defined using a Base Surface, which is a 2D domain of an arbitrary shape, and a set of Thickness Vectors, that define the variable thickness of the 3D domain. This is the only solid that defines the entire 3D-Layered Solids. Although such domains can not be fully general, they allow definition of a majority of realistic 3D problems.

It is use to extrude 3D-layered domain or solid in 3D-General domain.