\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
CGAL 4.7 - 2D and 3D Linear Geometry Kernel
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Functions
CGAL::collinear()
2D and 3D Linear Geometry Kernel Reference » Global Kernel Functions

See also
CGAL::left_turn()
CGAL::orientation()
CGAL::right_turn()

Functions

template<typename Kernel >
bool CGAL::collinear (const CGAL::Point_2< Kernel > &p, const CGAL::Point_2< Kernel > &q, const CGAL::Point_2< Kernel > &r)
 returns true, iff p, q, and r are collinear. More...
 
template<typename Kernel >
bool CGAL::collinear (const CGAL::Point_3< Kernel > &p, const CGAL::Point_3< Kernel > &q, const CGAL::Point_3< Kernel > &r)
 returns true, iff p, q, and r are collinear. More...
 

Function Documentation

template<typename Kernel >
bool CGAL::collinear ( const CGAL::Point_2< Kernel > &  p,
const CGAL::Point_2< Kernel > &  q,
const CGAL::Point_2< Kernel > &  r 
)

returns true, iff p, q, and r are collinear.

Examples:
Kernel_23/exact.cpp, and Kernel_23/surprising.cpp.
template<typename Kernel >
bool CGAL::collinear ( const CGAL::Point_3< Kernel > &  p,
const CGAL::Point_3< Kernel > &  q,
const CGAL::Point_3< Kernel > &  r 
)

returns true, iff p, q, and r are collinear.