CGAL users discussion list

[Ben Supnik <>]

Hi Efi.

Yeah - I guess I need either to bit-stream the true MP numbers, 
or...apply a transformation that reduces the precision of all numbers to 
what double-precision floating point can handle, in a topologically safe 
way.  I looked at snap-rounding, but it looks to me like it would be 
non-trivial to reconstruct face features from a snap-rounded arrangement.

cheers
ben

>> How can I write an arrangement out to disk such that I can both read
>> it back without redoing the intersection calculations and be sure
>> that it is topologically correct?


 wrote:
> If I understand the question, then it boild down to how ro export and 
> import numbers represented with the number type you are using, and that, 
> of course, depends on the number type. Gmpq supports exposrting to and 
> importing from an io-stream.


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