How to convert Open CASCADE
to AutoCAD?

In solid modeling and computer-aided design, boundary representation—often abbreviated as B-rep or BREP—is a method for representing shapes using the limits. A solid is represented as a collection of connected surface elements, the boundary between solid and non-solid.

Boundary representation of models are composed of two parts: topology and geometry (surfaces, curves and points). The main topological items are: faces, edges and vertices. A face is a bounded portion of a surface; an edge is a bounded piece of a curve and a vertex lies at a point. Other elements are the shell (a set of connected faces), the loop (a circuit of edges bounding a face) and loop-edge links (also known as winged edge links or half-edges) which are used to create the edge circuits. The edges are like the edges of a table, bounding a surface portion.

Compared to the constructive solid geometry (CSG) representation, which uses only primitive objects and Boolean operations to combine them, boundary representation is more flexible and has a much richer operation set. In addition to the Boolean operations, B-rep has extrusion (or sweeping), chamfer, blending, drafting, shelling, tweaking and other operations which make use of these.

AutoCAD is a software application for CAD and drafting built on Autodesk’s proprietary kernel named Shapemanager. Developed by Autodesk, AutoCAD was first to run on microcomputers with internal graphics controllers. As it is available on thirteen different languages, AutoCAD is widely used by architects, project managers engineers, graphic designers, city planners and other professionals all over the globe.

AutoCAD enables professionals to draft and edit 2D geometry and 3D models with solids, surfaces and meshes, annotate drawings with text, leaders, dimensions and tables, customize wit add-on apps and API.

There are different versions of AutoCAD. AutoCAD LT is the lower cost version, with limited capabilities. AutoCAD 360 is an account-based mobile and web application. Its users can view, edit and share files via mobile device and web. To add to it, students can use free student versions of AutoCAD, which are almost identical to the full commercial one.