CGAL 6.1.1 - 2D and 3D Linear Geometry Kernel

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Kernel::CompareSlope_2 Concept Reference
Reference Manual » Concepts » Kernel Function Object Concepts

## Definition

Refines
  `AdaptableBinaryFunction`

See also
  `CGAL::compare_slope()`

## Operations
A model of this concept must provide:
Comparison_result | operator() (const Kernel::Line_2 &l1, const Kernel::Line_2 &l2)
| compares the slopes of the lines `l1` and `l2`
Comparison_result | operator() (const Kernel::Segment_2 &s1, const Kernel::Segment_2 &s2)
| compares the slopes of the segments `s1` and `s2`, where the slope is the variation of the `y`-coordinate from the left to the right endpoint of the segments.
Comparison_result | operator() (const Kernel::Point_2 &s1s, const Kernel::Point_2 &s1t, const Kernel::Point_2 &s2s, const Kernel::Point_2 &s2t))
| compares the slopes of the segments `(s1s,s1t)` and `(s2s,s2t)`, where the slope is the variation of the `y`-coordinate from the left to the right endpoint of the segments.