Understanding B-rep Models: Vertices, Edges, Faces, and Shells
Breps are a type of boundary representation (B-rep) model that is used to describe the shape and topology of a solid object. B-rep models consist of vertices, edges, faces, and shells that form the boundary of the solid. A special kind of B-rep model is a faceted BREP, which only has flat faces that are enclosed by polygons. These polygons are called polyloops, and they are made of vertices joined by straight edges.
Benefits of Faceted BREP in STEP File
Autoconverter software uses faceted BREP representation, to save triangular solid meshes to a STEP file. This brings several benefits in comparison to saving triangular meshes to a STEP file as NURBS faces. The STEP file size with faceted BREP is significantly smaller than the STEP file with the NURBS faces, which makes a difference for the meshes with millions of triangles. Faceted BREP from STEP file can be easily converted to STL, OBJ, or PLY format, and used further for 3D printing, rendering, or mesh processing.
Converting Mesh Models to Faceted BREP in STEP File
Autoconverter software offers an efficient and versatile solution for saving and transferring solid meshes in STEP format. In addition, it also enables conversion from SKP, FBX, 3DM, 3DS, DAE and many more mesh file formats to STEP file. However, to be able to use faceted BREP in STEP file, your triangular mesh model should form a closed shell. If your mesh model can not meet this requirement, it will be saved to STEP file as a heavy set of NURBS faces.