//--------------------------------------------------------------------------------------------------
public static TopoDS_Vertex FindSharedVertex(TopoDS_Edge edge1, TopoDS_Edge edge2)
{
var vertices1 = edge1.Vertices();
var vertices2 = edge2.Vertices();
foreach (var vertex in vertices1)
{
if (vertices2.Any(v => v.IsSame(vertex)))
{
return(vertex);
}
}
return(null);
}