colour Visualization of ADVANCED_FACES in STEP format

[behzadtabari]

Hi,

for my Machine Learning course project, I am using OCC to write step files using STEPControl_Writer() class, and I am able to visualize it in occ GUI but I have to finally transfer this Open CASCADE STEP processor file to other step formats which may be readable using open source programs such as FreeCAD because when I import the OCC created step in them, the colours are gone and can not be visualized.

I am not much of an expert in this topic, so if you also could tell me how to search for an answer or what to search I would greatly appreciate that.

Thanks.