How to read facets one by one from already loaded STL file?

Ardahan 5 years ago in Question 0

I am loading STL file into viewport and then I want to read each facet in that model. In helixtoolkit STLReader class it is done from reading stream, but this methods is private so I can't call it in my program. Is there any public method for reading facets or should I override this existing methods?