CGAL 5.4.4  Triangulated Surface Mesh Simplification

The concept StopPredicate
describes the requirements for the predicate which indicates if the simplification process must finish.
Operations  
bool  operator() (const Edge_profile::FT ¤t_cost, const Edge_profile &profile, const Edge_profile::edges_size_type initial_edge_count, const Edge_profile::edges_size_type current_edge_count) const 
This predicate is called each time an edge is selected for processing, before it is collapsed. More...  
bool StopPredicate::operator()  (  const Edge_profile::FT &  current_cost, 
const Edge_profile &  profile,  
const Edge_profile::edges_size_type  initial_edge_count,  
const Edge_profile::edges_size_type  current_edge_count  
)  const 
This predicate is called each time an edge is selected for processing, before it is collapsed.
current_edge_cost
is the cost of the selected edge. initial_edge_count
and current_edge_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.