CGAL 6.0 - Weights
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#include<CGAL/Weights/mean_value_weights.h>
This weight is computed as \(w = \pm 2 \sqrt{\frac{2 (d_0 d_2 - D)}{(d d_0 + D_0)(d d_2 + D_2)}}\) with notations shown in the figure below and dot products
\(D_0 = (p_0 - q) \cdot (p_1 - q)\), \(D_2 = (p_1 - q) \cdot (p_2 - q)\), and \(D = (p_0 - q) \cdot (p_2 - q)\).
The \(\pm\) sign is a sign of the weight that depends on the configuration.
Here, q
is a query point and the points p0
, p1
, and p2
are its neighbors.
This weight supports only planar configurations (see more in section about Coplanarity) while alternative formulations are explained in Implementation.
Alternative Formulations
GeomTraits | a model of AnalyticWeightTraits_2 for 2D points; a model of AnalyticWeightTraits_3 for 3D points |
Functions | |
template<typename GeomTraits > | |
GeomTraits::FT | CGAL::Weights::mean_value_weight (const typename GeomTraits::Point_2 &p0, const typename GeomTraits::Point_2 &p1, const typename GeomTraits::Point_2 &p2, const typename GeomTraits::Point_2 &q, const GeomTraits &traits) |
computes the mean value weight in 2D at q using the points p0 , p1 , and p2 . | |
template<typename Kernel > | |
Kernel::FT | CGAL::Weights::mean_value_weight (const CGAL::Point_2< Kernel > &p0, const CGAL::Point_2< Kernel > &p1, const CGAL::Point_2< Kernel > &p2, const CGAL::Point_2< Kernel > &q) |
computes the mean value weight in 2D at q using the points p0 , p1 , and p2 . | |
Kernel::FT CGAL::Weights::mean_value_weight | ( | const CGAL::Point_2< Kernel > & | p0, |
const CGAL::Point_2< Kernel > & | p1, | ||
const CGAL::Point_2< Kernel > & | p2, | ||
const CGAL::Point_2< Kernel > & | q | ||
) |
GeomTraits::FT CGAL::Weights::mean_value_weight | ( | const typename GeomTraits::Point_2 & | p0, |
const typename GeomTraits::Point_2 & | p1, | ||
const typename GeomTraits::Point_2 & | p2, | ||
const typename GeomTraits::Point_2 & | q, | ||
const GeomTraits & | traits | ||
) |
#include <CGAL/Weights/mean_value_weights.h>
computes the mean value weight in 2D at q
using the points p0
, p1
, and p2
.
GeomTraits | a model of AnalyticWeightTraits_2 |