Home Page > KernelCAD Models > Sections > Surface and Solid Sections > BRep BSpline objects > BSpline Faces
BSpline BRep Faces
BSpline BRep Faces
Faces (patches) are the smooth connected pieces of surface of
BSpline BRep objects
Faces are parametrized with two parameters (u and v). Ranges of the u,v
parameters (parameter rectangle) are specific to each patch
A face can be closed in one (a cylinder) or both (torus) directions.
With the simple (natural) parametrization above a face is a deformed and
stretched rectangle. To model more complicated patches like triangular or
polygonal curved patches or patches with holes a face can have trimming wires
applied to the surface of the natural patch. For example a rectangle with a hole
has two wires: The external (natural) one and internal trimming wire, defining
edge of the hole.
Properties of a patch, including parameter ranges, 3D coordinates of a point
defined by parameters, etc can be obtained via
IKO_BRepGProp_Face interface queried from the relevant
IKO_TopoDS_Face,,
IKO_TopoDS_Shape
or IKO_TopExp_Explorer
See also: Shape Explorer Sample
|