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## ConvexPartitionIsValidTraits_2

### Definition

Requirements of a traits class used by convex_partition_is_valid_2 for testing the validity of a convex partition of a polygon.

### Types

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

ConvexPartitionIsValidTraits_2::Is_convex_2
| Model of the concept PolygonIsValid that tests if a sequence of points is convex or not.

### Creation

Only a copy constructor is required.

ConvexPartitionIsValidTraits_2 traits ( & tr);

### Operations

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

Is_convex_2 | traits.is_convex_2_object ( t)

### Has Models

CGAL::Partition_traits_2<R>

### See Also

CGAL::approx_convex_partition_2
CGAL::greene_approx_convex_partition_2
CGAL::Is_convex_2<Traits>
CGAL::optimal_convex_partition_2

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The CGAL Project . Tue, December 21, 2004 .