CGAL 5.4 - 2D and 3D Linear Geometry Kernel
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Kernel::CompareAngleWithXAxis_2 Concept Reference
2D and 3D Linear Geometry Kernel Reference » Concepts » Kernel Function Object Concepts

Definition

Refines:
AdaptableFunctor (with two arguments)

Operations

A model of this concept must provide:

Comparison_result operator() (const Kernel::Direction_2 &d, const Kernel::Direction_2 &e)
 compares the angles between the positive \( x\)-axis and the directions in counterclockwise order.