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[apunto13 <>]

Hello everybody,
  I'm writing an application which requires alpha shape computations and I'd
like to copy instances of class Alpha_shape_2. However, both copy
constructor and operator = are private and building a new object from the
vertices of an alpha shape leads to a different alpha shape (probably
because I use Exact_predicates_inexact_constructions_kernel).

My questions are: 1) How can I clone an alpha shape avoiding the use of
Exact_predicates_exact_constructions_kernel? 2) Is there any precise reason
to implement copy constructor and operator = for Alpha_shape_{2,3} private? 

Many thanks

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