Nice tutorials. thanks.He-he, you came across the presentation that was once stolen from OCC's official training. And I have nothing to do with that awful crime!
Btw, OCC published few materials also here: https://dev.opencascade.org/content...s-free-open-cascade-technology-occt-trainings
Edit: it seems there are no any materials (anymore?) by the link I posted.
When I conducted trainings on OpenCascade I used to skip that part. OCAF seems to be best explained using a whiteboard or a sheet of paperI dont understand it fully. It does not work on me.![]()