\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)

CGAL 4.8 - Triangulated Surface Mesh Simplification

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GetPlacement Concept Reference
Concepts

## Definition

The concept `GetPlacement` describes the requirements for the policy function object which gets the collapse placement of an edge, that is, the new position of the vertex that remains after a halfedge-collapse operation.

The placement returned is a `boost::optional` value (i.e., it can be absent). An absent result indicates that the remaining vertex must be kept in place, not moved to a new position.

Refines:
  `CopyConstructible`

Has Models:

  `CGAL::Surface_mesh_simplification::Midpoint_placement<ECM>`

  `CGAL::Surface_mesh_simplification::LindstromTurk_placement<ECM>`

## Operations
template<class Profile >
boost::optional< Point > | operator() (Profile const &edge_profile) const
| Computes and returns the placement, that is, the position of the vertex which replaces the collapsing edge (represented by its profile). More...

## Member Function Documentation

template<class Profile >

boost::optional<Point> GetPlacement::operator() | ( | Profile const & | edge_profile) |  | const

Computes and returns the placement, that is, the position of the vertex which replaces the collapsing edge (represented by its profile).

Template Parameters

  Profile | must be a model of `EdgeProfile`.