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

CGAL 4.8 - Triangulated Surface Mesh Simplification

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StopPredicate Concept Reference
Concepts

## Definition

The concept `StopPredicate` describes the requirements for the predicate which indicates if the simplification process must finish.

Has Models:

  `CGAL::Surface_mesh_simplification::Count_stop_predicate<ECM>`

  `CGAL::Surface_mesh_simplification::Count_ratio_stop_predicate<ECM>`

## Types
typedef unspecified_type | ECM
| The type of the surface mesh to simplify. More...
typedef unspecified_type | FT
| A field type representing the collapse cost.
typedef unspecified_type | size_type
| An integer type representing the number of edges.
typedef unspecified_type | Profile
| The type of the edge profile cache. More...

## Operations
bool | operator() (FT const &current_cost, Profile const &profile, size_type initial_count, size_type current_count) const
| This predicate is called each time an edge is selected for processing, before it is collapsed. More...

## Member Typedef Documentation

typedef unspecified_type StopPredicate::ECM

The type of the surface mesh to simplify.

Must be a model of the `EdgeCollapsableSurfaceMesh` concept.

typedef unspecified_type StopPredicate::Profile

The type of the edge profile cache.

Must be a model of the `EdgeProfile` concept.

## Member Function Documentation

bool StopPredicate::operator() | ( | FT const & | current_cost,
|  | Profile const & | profile,
|  | size_type | initial_count,
|  | size_type | current_count
| ) |  | const

This predicate is called each time an edge is selected for processing, before it is collapsed.

`current_cost` is the cost of the selected edge.

`initial_count` and `current_count` are the number of initial and current edges.

If the return value is `true` the simplification terminates before processing the edge, otherwise it continues normally.