CGAL 6.0.2 - 2D Regularized Boolean Set-Operations

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ArrDirectionalTraits::ConstructOpposite_2 Concept Reference
2D Regularized Boolean Set-Operations Reference » Concepts

## Definition

Refines
  `AdaptableUnaryFunction`

Has models
  `ArrangementDirectionalXMonotoneTraits_2::Construct_opposite_2`

## Operations
A model of this concept must provide:
ArrDirectionalTraits::X_monotone_curve_2 | operator() (ArrDirectionalTraits::X_monotone_curve_2 xc)
| accepts an \( x\)-monotone curve `xc` and returns its opposite curve, namely a curve whose graph is the same as `xc`'s, and whose source and target are swapped with respect to `xc`'s source and target.