CADability is a pure .net class library for modeling and analyzing 3d data, both with your code and interactively. It comes with an optional Windows.Forms user interface, which can be adopted to other environments. It does not refer to other 3d modeling libraries. For data exchange you can use STEP, STL or DXF files.
Step import is slow. Most time is consumed in Face generation. This is because many faces have to be readjusted due to the restriction of valid BRep structures. Face generation could be implemented with multi threading.
Step import is slow. Most time is consumed in Face generation. This is because many faces have to be readjusted due to the restriction of valid BRep structures. Face generation could be implemented with multi threading.