How to convert DAE
to Open CASCADE?

DAE is an interactive 3D file format used for exchanging digital assets between various 3D modeling systems and game engines.

The DAE format was created using COLLADA XML architecture, which is an open standard for transmitting digital assets between graphic applications, and now owned and developed by Khronos Group.

The following software can be used to view, alter, and process DAE: Bentley Systems MicroStation, Autodesk AutoCAD, Autodesk 3ds Max with the ColladaMax plugin, and Autodesk Maya with the ColladaMaya plugin.

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.