CGAL 5.5 - Polygon Mesh Processing
PMPHolefillingVisitor Concept Reference

## Definition

The concept PMPHolefillingVisitor defines the requirements for the visitor used in hole-filling-related functions . The hole filling may use a 2D constrained triangulation for almost planar holes (planar phase). If that is not appropriate or fails it may use an algorithm with a quadratic running time relying on the 3D Delaunay triangulation (quadratic phase). If that fails, it uses an algorithm with cubic running time (cubic phase).

Refines:
CopyConstructible
Has Models:
CGAL::Polygon_mesh_processing::Hole_filling::Default_visitor.

## Public Member Functions

void start_planar_phase () const
called when the planar hole filling algorithm starts.

void end_planar_phase (bool success) const
called when the planar hole filling algorithm stops. More...

void start_quadratic_phase (std::size_t n) const
called when the algorithm with quadratic running time starts. More...

void quadratic_step () const
called at each step. More...

void end_quadratic_phase (bool success) const
called when the algorithm with quadratic running time ends. More...

void start_cubic_phase (std::size_t n) const
called when the algorithm with cubic running time starts. More...

void cubic_step () const
called at each step. This will be called n times.

void end_cubic_phase () const
called when the algorithm with cubic running time ends.

void start_refine_phase ()
called before refining the triangulation of the hole (triangulate_and_refine_hole() and triangulate_refine_and_fair_hole() only)

void end_refine_phase ()
called after having refined the triangulation of the hole (triangulate_and_refine_hole() and triangulate_refine_and_fair_hole() only)

void start_fair_phase ()
called before fairing the triangulation of the hole (triangulate_refine_and_fair_hole() only)

void end_fair_phase ()
called after having faired the triangulation of the hole (triangulate_refine_and_fair_hole() only)

## ◆ end_planar_phase()

 void PMPHolefillingVisitor::end_planar_phase ( bool success ) const

called when the planar hole filling algorithm stops.

Parameters
 success true when the hole could be filled in this phase.

 void PMPHolefillingVisitor::end_quadratic_phase ( bool success ) const

called when the algorithm with quadratic running time ends.

Parameters
 success true when the hole could be filled in this phase.

 void PMPHolefillingVisitor::quadratic_step ( ) const

called at each step.

There may be less than n calls as this is an upperbound.

## ◆ start_cubic_phase()

 void PMPHolefillingVisitor::start_cubic_phase ( std::size_t n ) const

called when the algorithm with cubic running time starts.

Parameters
 n the upperbound on the number of steps