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Function

CGAL::lower_envelope_3

#include <CGAL/envelope_3.h>

template<class InputIterator, class Traits>
void lower_envelope_3 ( InputIterator begin, InputIterator end, Envelope_diagram_2<Traits>& diag)
Computes the lower envelope of a set of surfaces in ℝ3, as given by the range [begin, end). The lower envelope is represented using the output minimization diagram diag.
Precondition: The value-type of InputIterator is Traits::Surface_3.

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CGAL Open Source Project. Release 4.0.2. 4 July 2012.