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% | Reference manual page: YMonotonePartitionIsValidTraits_2.tex
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% | 10.05.2000   Susan Hert
% | Package: Partition_2
% | 
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\begin{ccRefConcept}{YMonotonePartitionIsValidTraits_2}
\ccIndexSubitemBegin[C]{y_monotone_partition_2}{traits class}
\ccIndexSubitemBegin[C]{y_monotone_partition_is_valid}{traits class}


\ccDefinition
  
Requirements of a traits class that is used 
by \ccc{y_monotone_partition_is_valid_2} for testing the validity of a
$y$-monotone partition of a polygon.

\ccTypes

All types required by the concept \ccc{PartitionIsValidTraits_2} are required
except the function object type \ccc{Is_valid}. The following type is
required instead:

\ccNestedType{Is_y_monotone_2}{Model of the concept \ccc{PolygonIsValid} that tests if
                               a sequence of points is $y$-monotone or not.}

\ccCreationVariable{traits}
\ccCreation

Only a copy constructor is required.

\ccConstructor{YMonotonePartitionIsValidTraits_2(YMonotonePartitionIsValidTraits_2& tr
)}{}
\ccOperations

The following function that creates an instance of the above predicate object
type must exist instead of the function \ccc{is_valid_object} required by
\ccc{PartitionIsValidTraits_2}.

\ccMethod{Is_y_monotone_2 is_y_monotone_2_object(YMonotonePartitionIsValidTraits_2 t);}{}

\ccHasModels

\ccRefIdfierPage{CGAL::Partition_traits_2<R>}

\ccSeeAlso

\ccRefIdfierPage{CGAL::partition_is_valid_2} \\
\ccRefIdfierPage{CGAL::y_monotone_partition_2}

\ccIndexSubitemEnd[C]{y_monotone_partition_2}{traits class}
\ccIndexSubitemEnd[C]{y_monotone_partition_is_valid}{traits class}
\end{ccRefConcept}
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