I’ve been having this problem for a week now. OpenNest doesn’t recognize the entire object, not even the center. It only recognizes the edges and individual holes. I would be very grateful for any help. Thank you.
Pretty sure there are setting to Open Nest that allow it to recognize islanded curves. Photographs of your screen are of little use here (why wouldn’t you use Print Screen from your keyboard?). Post a file for us to examine!
Please download examples files from food4rhino or follow online documentation: OpenNest
There are components both for surface input or datatree polylines with holes. Conversion from 3d to 2d must be done by you.