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Fix a use of CGAL::to_double: the generic CGAL::to_double is not able to 

select the right Real_embeddable_traits (see the comments i have inserted).
This commit is contained in:
Laurent Rineau 2008-09-04 11:11:37 +00:00
parent 05982bcde8
commit b01af5dbdf
1 changed files with 16 additions and 4 deletions
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20
Polyhedron/demo/Polyhedron/include/CGAL/Polyhedron_kernel.h
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@ -117,15 +117,27 @@ public:
// get variables // get variables
Variable_value_iterator X = m_solution.variable_values_begin(); Variable_value_iterator X = m_solution.variable_values_begin();
// Problem: X[0], X[1], ..., X[3] are proxy objects from
// boost::facade_iterator. Those proxy objects are of type
// operator_brackets_proxy<Variable_value_iterator>, which
// is castable to a number type. In CGAL::to_double, the
// automatic selection of a Real_embeddable_traits does not
// work with such proxy objects (whose type is not
// recognized). That is why we need to select the
// Real_embeddable_traits manually, and create a functor
// to_double manually. -- Laurent Rineau, 2008/09/04
typedef CGAL::Real_embeddable_traits<typename Variable_value_iterator::value_type> RE_traits;
typename RE_traits::To_double to_double;
// solution if x4 > 0 // solution if x4 > 0
double x4 = CGAL::to_double(X[3]); double x4 = to_double(X[3]);
if(x4 <= 0.0) if(x4 <= 0.0)
return false; return false;
// define inside point as (x1;x2;x3) // define inside point as (x1;x2;x3)
double x1 = CGAL::to_double(X[0]); double x1 = to_double(X[0]);
double x2 = CGAL::to_double(X[1]); double x2 = to_double(X[1]);
double x3 = CGAL::to_double(X[2]); double x3 = to_double(X[2]);
m_inside_point = Point(x1,x2,x3); m_inside_point = Point(x1,x2,x3);
return true; return true;