477 lines
13 KiB
C++
Executable File
477 lines
13 KiB
C++
Executable File
// Copyright (c) 2004-2006 INRIA Sophia-Antipolis (France).
|
|
// All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org).
|
|
// You can redistribute it and/or modify it under the terms of the GNU
|
|
// General Public License as published by the Free Software Foundation,
|
|
// either version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
// SPDX-License-Identifier: GPL-3.0+
|
|
//
|
|
//
|
|
// Author(s) : Laurent RINEAU
|
|
|
|
#ifndef CGAL_MESH_2_REFINE_FACES_H
|
|
#define CGAL_MESH_2_REFINE_FACES_H
|
|
|
|
#include <CGAL/license/Mesh_2.h>
|
|
|
|
|
|
#include <CGAL/Mesh_2/Face_badness.h>
|
|
#include <CGAL/Double_map.h>
|
|
#include <CGAL/boost/iterator/transform_iterator.hpp>
|
|
|
|
#include <string>
|
|
#include <sstream>
|
|
|
|
namespace CGAL {
|
|
|
|
namespace Mesh_2 {
|
|
|
|
// Previous is the whole previous edges_level.
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
class Refine_faces_base :
|
|
public Triangulation_mesher_level_traits_2<Tr>,
|
|
public No_test_point_conflict,
|
|
public No_after_no_insertion
|
|
{
|
|
/** \name Types from Tr. */
|
|
|
|
typedef Tr Triangulation;
|
|
|
|
typedef typename Tr::Geom_traits Geom_traits;
|
|
typedef typename Geom_traits::FT FT;
|
|
typedef FT Squared_length;
|
|
|
|
typedef typename Tr::Vertex_handle Vertex_handle;
|
|
typedef typename Tr::Face_handle Face_handle;
|
|
|
|
typedef typename Tr::Face_circulator Face_circulator;
|
|
typedef typename Tr::Finite_faces_iterator Finite_faces_iterator;
|
|
typedef typename Tr::All_faces_iterator All_faces_iterator;
|
|
typedef typename Tr::Point Point;
|
|
|
|
typedef Triangulation_mesher_level_traits_2<Tr> Triangulation_traits;
|
|
typedef typename Triangulation_traits::Zone Zone;
|
|
|
|
public:
|
|
using Triangulation_mesher_level_traits_2<Tr>::triangulation_ref_impl;
|
|
|
|
protected: // --- PROTECTED TYPES ---
|
|
/** Meshing criteria. */
|
|
typedef typename Criteria::Is_bad s_bad;
|
|
typedef typename Criteria::Quality Quality;
|
|
|
|
/** \name typedefs for private members types */
|
|
|
|
struct Face_compare {
|
|
bool operator()(const Face_handle& fh1, const Face_handle& fh2) const {
|
|
if(fh1->vertex(0)->point() < fh2->vertex(0)->point())
|
|
return true;
|
|
else if(fh1->vertex(0)->point() == fh2->vertex(0)->point()) {
|
|
if(fh1->vertex(1)->point() < fh2->vertex(1)->point())
|
|
return true;
|
|
else if(fh1->vertex(1)->point() == fh2->vertex(1)->point() &&
|
|
fh1->vertex(2)->point() < fh2->vertex(2)->point())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
typedef CGAL::Double_map<Face_handle, Quality, Face_compare> Bad_faces;
|
|
|
|
protected:
|
|
// --- PROTECTED MEMBER DATAS ---
|
|
|
|
Criteria& criteria; /**<The meshing criteria */
|
|
Previous& previous;
|
|
|
|
/** List of bad finite faces */
|
|
Bad_faces bad_faces;
|
|
|
|
Mesh_2::Face_badness current_badness;
|
|
|
|
public:
|
|
/** \name CONSTRUCTORS */
|
|
|
|
Refine_faces_base(Tr& t, Criteria& criteria_, Previous& prev)
|
|
: Triangulation_traits(t), criteria(criteria_), previous(prev)
|
|
{
|
|
}
|
|
|
|
/** \Name MESHER_LEVEL FUNCTIONS */
|
|
|
|
/** Scans all faces in domain and put them in the map if they are
|
|
bad. */
|
|
void scan_triangulation_impl()
|
|
{
|
|
bad_faces.clear();
|
|
#ifdef CGAL_MESH_2_DEBUG_BAD_FACES
|
|
std::cerr << "bad_faces.clear()\n";
|
|
#endif // CGAL_MESH_2_DEBUG_BAD_FACES
|
|
|
|
for(typename Tr::Finite_faces_iterator fit =
|
|
triangulation_ref_impl().finite_faces_begin();
|
|
fit != triangulation_ref_impl().finite_faces_end();
|
|
++fit)
|
|
{
|
|
if( fit->is_in_domain() )
|
|
{
|
|
Quality q;
|
|
Mesh_2::Face_badness badness = is_bad(fit, q);
|
|
if( badness != Mesh_2::NOT_BAD )
|
|
push_in_bad_faces(fit, q);
|
|
}
|
|
}
|
|
}
|
|
|
|
Zone conflicts_zone_impl(const Point& p, Face_handle fh)
|
|
{
|
|
Zone zone;
|
|
|
|
zone.fh = triangulation_ref_impl().locate(p, zone.locate_type, zone.i, fh);
|
|
|
|
zone.parent_face = fh;
|
|
|
|
triangulation_ref_impl().
|
|
get_conflicts_and_boundary(p,
|
|
std::back_inserter(zone.faces),
|
|
std::back_inserter(zone.boundary_edges),
|
|
fh
|
|
);
|
|
#ifdef CGAL_MESH_2_DEBUG_CONFLICTS_ZONE
|
|
std::cerr << "get_conflicts_and_boundary(" << p << "):" << std::endl
|
|
<< "faces: " << zone.faces.size() << std::endl
|
|
<< "edges: " << zone.boundary_edges.size() << std::endl;
|
|
#endif // CGAL_MESH_2_DEBUG_CONFLICTS_ZONE
|
|
return zone;
|
|
}
|
|
|
|
/** Tells if the map of faces to be conformed is empty or not. */
|
|
bool no_longer_element_to_refine_impl() const
|
|
{
|
|
return bad_faces.empty();
|
|
}
|
|
|
|
/** Get the next face to conform. */
|
|
Face_handle get_next_element_impl()
|
|
{
|
|
Face_handle fh = bad_faces.front()->second;
|
|
current_badness = is_bad(bad_faces.front()->first);
|
|
|
|
CGAL_assertion_code
|
|
(typename Geom_traits::Orientation_2 orientation =
|
|
triangulation_ref_impl().geom_traits().orientation_2_object()
|
|
);
|
|
CGAL_assertion(orientation(fh->vertex(0)->point(),
|
|
fh->vertex(1)->point(),
|
|
fh->vertex(2)->point()) != COLLINEAR );
|
|
return fh;
|
|
}
|
|
|
|
/** Pop the first face of the map. */
|
|
void pop_next_element_impl()
|
|
{
|
|
bad_faces.pop_front();
|
|
}
|
|
|
|
/** Returns the circumcenter of the face. */
|
|
Point refinement_point_impl(const Face_handle& f) const
|
|
{
|
|
return triangulation_ref_impl().circumcenter(f);
|
|
}
|
|
|
|
/** \todo ?? */
|
|
void before_conflicts_impl(const Face_handle&, const Point&)
|
|
{ /// @todo modularize
|
|
previous.set_imperative_refinement(current_badness ==
|
|
Mesh_2::IMPERATIVELY_BAD);
|
|
}
|
|
|
|
/** Remove the conflicting faces from the bad faces map. */
|
|
void before_insertion_impl(const Face_handle&, const Point&,
|
|
Zone& zone)
|
|
{
|
|
/** @todo Perhaps this function is useless. */
|
|
for(typename Zone::Faces_iterator fh_it = zone.faces.begin();
|
|
fh_it != zone.faces.end();
|
|
++fh_it)
|
|
{
|
|
if((*fh_it)->is_in_domain() )
|
|
remove_bad_face(*fh_it);
|
|
(*fh_it)->set_in_domain(false);
|
|
}
|
|
}
|
|
|
|
/** Restore markers in the star of \c v. */
|
|
void after_insertion_impl(const Vertex_handle& v)
|
|
{
|
|
#ifdef CGAL_MESH_2_VERBOSE
|
|
std::cerr << "*";
|
|
#endif
|
|
typename Tr::Face_circulator fc =
|
|
triangulation_ref_impl().incident_faces(v), fcbegin(fc);
|
|
do {
|
|
fc->set_in_domain(true);
|
|
} while (++fc != fcbegin);
|
|
compute_new_bad_faces(v);
|
|
}
|
|
|
|
private:
|
|
/** \name AUXILIARY FUNCTIONS */
|
|
|
|
/** Auxiliary function called to put a new face in the map. */
|
|
void push_in_bad_faces(Face_handle fh, const Quality& q);
|
|
|
|
|
|
public:
|
|
/** \name Functions that maintain the map of bad faces. */
|
|
|
|
/**
|
|
* Updates the map with faces incident to the vertex \a v.
|
|
* @todo The visitor should be made friend, instead of this function to
|
|
* be public.
|
|
*/
|
|
void compute_new_bad_faces(Vertex_handle v);
|
|
|
|
/** Auxiliary function called to erase a face handle from the map. */
|
|
void remove_bad_face(Face_handle fh);
|
|
|
|
public:
|
|
/** \name ACCESS FUNCTION */
|
|
|
|
Mesh_2::Face_badness is_bad(const Face_handle fh, Quality& q) const;
|
|
Mesh_2::Face_badness is_bad(const Face_handle fh) const;
|
|
Mesh_2::Face_badness is_bad(Quality q) const;
|
|
|
|
/**
|
|
* Adds the sequence [\c begin, \c end[ to the list
|
|
* of bad faces.
|
|
* Use this overriden function if the list of bad faces can be
|
|
* computed easily without testing all faces.
|
|
* \param Fh_it is an iterator of \c Face_Handle.
|
|
*/
|
|
template <class Fh_it>
|
|
void set_bad_faces(Fh_it begin, Fh_it end)
|
|
{
|
|
bad_faces.clear();
|
|
#ifdef CGAL_MESH_2_DEBUG_BAD_FACES
|
|
std::cerr << "bad_faces.clear()\n";
|
|
#endif // CGAL_MESH_2_DEBUG_BAD_FACES
|
|
for(Fh_it pfit=begin; pfit!=end; ++pfit)
|
|
push_in_bad_faces(*pfit, Quality());
|
|
}
|
|
|
|
}; // end class Refine_faces_base
|
|
|
|
// --- PRIVATE MEMBER FUNCTIONS ---
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
inline
|
|
void Refine_faces_base<Tr, Criteria, Previous>::
|
|
push_in_bad_faces(Face_handle fh, const Quality& q)
|
|
{
|
|
#ifdef CGAL_MESH_2_DEBUG_BAD_FACES
|
|
std::cerr << "push_in_bad_faces("
|
|
<< fh->vertex(0)->point() << ","
|
|
<< fh->vertex(1)->point() << ","
|
|
<< fh->vertex(2)->point() << ")\n";
|
|
#endif // CGAL_MESH_2_DEBUG_BAD_FACES
|
|
CGAL_assertion_code
|
|
(typename Geom_traits::Orientation_2 orientation =
|
|
triangulation_ref_impl().geom_traits().orientation_2_object()
|
|
);
|
|
CGAL_assertion( orientation(fh->vertex(0)->point(),
|
|
fh->vertex(1)->point(),
|
|
fh->vertex(2)->point()) != COLLINEAR );
|
|
CGAL_assertion(fh->is_in_domain());
|
|
bad_faces.insert(fh, q);
|
|
}
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
inline
|
|
void Refine_faces_base<Tr, Criteria, Previous>::
|
|
remove_bad_face(Face_handle fh)
|
|
{
|
|
#ifdef CGAL_MESH_2_DEBUG_BAD_FACES
|
|
std::cerr << "bad_faces.erase("
|
|
<< fh->vertex(0)->point() << ","
|
|
<< fh->vertex(1)->point() << ","
|
|
<< fh->vertex(2)->point() << ")\n";
|
|
#endif // CGAL_MESH_2_DEBUG_BAD_FACES
|
|
bad_faces.erase(fh);
|
|
}
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
void Refine_faces_base<Tr, Criteria, Previous>::
|
|
compute_new_bad_faces(Vertex_handle v)
|
|
{
|
|
typename Tr::Face_circulator fc = triangulation_ref_impl().incident_faces(v), fcbegin(fc);
|
|
do {
|
|
if(!triangulation_ref_impl().is_infinite(fc))
|
|
if( fc->is_in_domain() )
|
|
{
|
|
Quality q;
|
|
Mesh_2::Face_badness badness = is_bad(fc, q);
|
|
if( badness != Mesh_2::NOT_BAD )
|
|
push_in_bad_faces(fc, q);
|
|
}
|
|
fc++;
|
|
} while(fc!=fcbegin);
|
|
}
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
inline
|
|
Mesh_2::Face_badness
|
|
Refine_faces_base<Tr, Criteria, Previous>::
|
|
is_bad(const Face_handle f, Quality& q) const
|
|
{
|
|
return criteria.is_bad_object()(f, q);
|
|
}
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
inline
|
|
Mesh_2::Face_badness
|
|
Refine_faces_base<Tr, Criteria, Previous>::
|
|
is_bad(const Face_handle f) const
|
|
{
|
|
Quality q;
|
|
return criteria.is_bad_object()(f, q);
|
|
}
|
|
|
|
template <typename Tr, typename Criteria, typename Previous>
|
|
inline
|
|
Mesh_2::Face_badness
|
|
Refine_faces_base<Tr, Criteria, Previous>::
|
|
is_bad(Quality q) const
|
|
{
|
|
return criteria.is_bad_object()(q);
|
|
}
|
|
|
|
namespace details {
|
|
template <typename Tr, typename Self, typename Previous>
|
|
struct Refine_faces_types
|
|
{
|
|
typedef Mesher_level <
|
|
Tr,
|
|
Self,
|
|
typename Tr::Face_handle,
|
|
Previous,
|
|
Triangulation_mesher_level_traits_2<Tr>
|
|
>
|
|
Faces_mesher_level;
|
|
}; // end Refine_faces_types
|
|
} // end namespace details
|
|
|
|
template <typename Tr,
|
|
typename Criteria,
|
|
typename Previous,
|
|
typename Base = Refine_faces_base<Tr, Criteria, Previous> >
|
|
class Refine_faces :
|
|
public Base,
|
|
public details::Refine_faces_types<Tr,
|
|
Refine_faces<Tr, Criteria, Previous, Base>,
|
|
Previous>::Faces_mesher_level
|
|
{
|
|
typedef typename Tr::Geom_traits Geom_traits;
|
|
|
|
template <class Pair>
|
|
struct Pair_get_first
|
|
: public CGAL::cpp98::unary_function<Pair, typename Pair::first_type>
|
|
{
|
|
typedef typename Pair::first_type result;
|
|
const result& operator()(const Pair& p) const
|
|
{
|
|
return p.first;
|
|
}
|
|
};
|
|
|
|
public:
|
|
typedef Refine_faces<Tr, Criteria, Previous, Base> Self;
|
|
typedef typename details::Refine_faces_types<Tr, Self, Previous>
|
|
::Faces_mesher_level Mesher;
|
|
|
|
typedef Tr Triangulation;
|
|
|
|
typedef typename Base::Bad_faces Bad_faces;
|
|
|
|
typedef typename boost::transform_iterator<
|
|
Pair_get_first<typename Bad_faces::Direct_entry>,
|
|
typename Bad_faces::const_iterator>
|
|
Bad_faces_const_iterator;
|
|
|
|
public:
|
|
Refine_faces(Tr& t, Criteria& criteria, Previous& previous)
|
|
: Base(t, criteria, previous), Mesher(previous)
|
|
{
|
|
}
|
|
|
|
/** \name DEBUGGING FUNCTIONS */
|
|
|
|
Bad_faces_const_iterator begin() const
|
|
{
|
|
return Bad_faces_const_iterator(this->bad_faces.begin());
|
|
}
|
|
|
|
Bad_faces_const_iterator end() const
|
|
{
|
|
return Bad_faces_const_iterator(this->bad_faces.end());
|
|
}
|
|
|
|
bool check_bad_faces()
|
|
{
|
|
struct Output_bad_face {
|
|
std::string operator()(typename Tr::Face_handle fh)
|
|
{
|
|
std::stringstream str;
|
|
|
|
str << "("
|
|
<< fh->vertex(0)->point() << ", "
|
|
<< fh->vertex(1)->point() << ", "
|
|
<< fh->vertex(2)->point()
|
|
<< ")";
|
|
return str.str();
|
|
}
|
|
};
|
|
|
|
CGAL_assertion_code
|
|
(typename Geom_traits::Orientation_2 orientation =
|
|
this->triangulation_ref_impl().geom_traits().orientation_2_object()
|
|
);
|
|
for(Bad_faces_const_iterator fit = begin();
|
|
fit != end();
|
|
++fit)
|
|
if( orientation((*fit)->vertex(0)->point(),
|
|
(*fit)->vertex(1)->point(),
|
|
(*fit)->vertex(2)->point()) == COLLINEAR )
|
|
{
|
|
std::cerr << "collinear("
|
|
<< (*fit)->vertex(0)->point() << ", "
|
|
<< (*fit)->vertex(1)->point() << ", "
|
|
<< (*fit)->vertex(2)->point()<< ") == true"
|
|
<< std::endl;
|
|
std::cerr << "Dump of bad_faces:" << std::endl;
|
|
this->bad_faces.dump_direct_func(std::cerr, Output_bad_face());
|
|
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
}; // end Refine_faces
|
|
|
|
} // end namespace Mesh_2
|
|
|
|
} // end namespace CGAL
|
|
|
|
#endif // CGAL_MESH_2_REFINE_FACES_H
|