A type representing directions in two dimensions.
CopyConstructible
Assignable
DefaultConstructible
CGAL::Direction_2<Kernel>
Kernel::CompareAngleWithXAxis_2
Kernel::ComputeDx_2
Kernel::ComputeDy_2
Kernel::ConstructDirection_2
Kernel::ConstructOppositeDirection_2
Kernel::ConstructPerpendicularDirection_2
Kernel::CounterclockwiseInBetween_2
Kernel::Equal_2