I gave made a viewer using for STEP Model using Opencascade library. I want to provide different layers ON/OFF option to the user. I will use one layer for markup.
Can anybody tell me , is there any layer concept in STEP specification (like the DWG/DXF Autodesk files)? And if yes, how to access the layer's information of STEP Model using opencascade library.
Plz help me out.