CGAL::overlay
Definition
The function overlay computes the overlay of two input arrangement
objects, and returns the overlaid arrangement.
All three arrangements can be instantiated with different geometric
traits classes and different Dcel (encapsulated in the various
topology-traits classes) classes.
The geometry traits of the result arrangement is
used to construct the result arrangement. This means that all
the types (e.g., Traits::Point_2, Traits::Curve_2 and
Traits::Point_2) of both input arrangements have to convertible
to the types in the result arrangement.
A given overlay-traits object is used to properly construct the
overlaid Dcel that represents the resulting arrangement.
#include <CGAL/Arr_overlay_2.h>
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template <class GeomTraitsA, class GeomTraitsB, class GeomTraitsRes, class TopTraitsA, class TopTraitsB, class TopTraitsRes, class OverlayTraits>
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void
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overlay ( |
Arrangement_on_surface_2<GeomTraitsA, TopTraitsA> arr1,
Arrangement_on_surface_2<GeomTraitsB, TopTraitsB> arr2,
Arrangement_on_surface_2<GeomTraitsRes, TopTraitsRes>& arr_res,
OverlayTraits& ovl_tr) |
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Computes the overlay of two arrangements arr1 and arr2, and sets
the output arrangement res to represent the overlaid arrangement.
Precondition
res does not refer to either arr1 or arr2
(that is, ``self overlay'' is not supported).
#include <CGAL/Arrangement_with_history_2.h>
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template<typename Traits, typename Dcel1, typename Dcel2, typename ResDcel, typename OverlayTraits>
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void
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Computes the overlay of two arrangements with history arr1 and
arr2, and sets the output arrangement with history res to
represent the overlaid arrangement. The function also constructs a
consolidated set of curves that induce res.
Precondition
res does not refer to either arr1 or arr2
(that is, ``self overlay'' is not supported).
Requirements
- The overlay-traits object ovl_tr must model the OverlayTraits
concept, which is able to construct records of the ResDcel class on
the basis of the Dcel1 and Dcel2 records that induce them.
See Also
OverlayTraits
