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I would like to find possible intersection points between two wires 2D (closed or open, it doesn't matter). First solution is to compare each edge of first wire with each edge of second wire by using the class GeomAPI_ExtremaCurveCurve. But, is there another class able to do this work directly...

I usally identify opencascade entities, faces - edges, by getting the hash code given by OpenCascade function. The problem is that hash code is just valid only for a while. I se that you are using an identifier (ID) that seems to be absolute and valid forever. Is it possible to get this...