148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
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// Copyright (c) 2010 INRIA Sophia-Antipolis (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org).
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Mesh_3/include/CGAL/Mesh_edge_criteria_3.h $
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// $Id: Mesh_edge_criteria_3.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Stephane Tayeb
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//
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//******************************************************************************
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// File Description :
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//******************************************************************************
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#ifndef CGAL_MESH_EDGE_CRITERIA_3_H
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#define CGAL_MESH_EDGE_CRITERIA_3_H
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#include <CGAL/license/Mesh_3.h>
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#include <CGAL/Mesh_constant_domain_field_3.h>
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#include <CGAL/Mesh_3/Is_mesh_domain_field_3.h>
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#include <type_traits>
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namespace CGAL {
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namespace Mesh_3 {
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namespace internal {
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// Those two classes are designed to handle dynamic initialization of
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// Sizing_field type (using named parameters of make_mesh_3 for example)
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template < typename FT_, typename Point_, typename Index_ >
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class Sizing_field_interface
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{
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public:
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typedef FT_ FT;
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typedef Point_ Point_3;
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typedef Index_ Index;
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virtual ~Sizing_field_interface() {}
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virtual FT operator()(const Point_3& p,
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const int dim,
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const Index& index) const = 0;
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virtual Sizing_field_interface* clone() const = 0;
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};
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template < typename Sizing_field,
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typename FT,
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typename Point_3,
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typename Index>
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struct Sizing_field_container
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: public Sizing_field_interface < FT,
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Point_3,
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Index >
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{
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typedef Sizing_field_interface < FT,
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Point_3,
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Index > Base;
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typedef Sizing_field_container<Sizing_field, FT, Point_3, Index> Self;
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public:
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Sizing_field_container(const Sizing_field& s) : s_(s) {}
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virtual ~Sizing_field_container() {}
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virtual FT operator()(const Point_3& p,
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const int dim,
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const Index& index) const
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{
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return s_(p,dim,index);
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}
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virtual Base* clone() const
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{
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return new Self(*this);
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}
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private:
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Sizing_field s_;
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};
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} // end namespace internal
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} // end namespace Mesh_3
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template < typename Tr >
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class Mesh_edge_criteria_3
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{
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typedef Mesh_edge_criteria_3 Self;
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public:
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typedef typename Tr::Vertex::Index Index;
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typedef typename Tr::Geom_traits Gt;
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typedef typename Gt::FT FT;
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typedef typename Tr::Bare_point Point_3;
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/// Constructors
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Mesh_edge_criteria_3(const FT& value)
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: p_size_(new Mesh_3::internal::Sizing_field_container<
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Mesh_constant_domain_field_3<Gt,Index> ,
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FT,
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Point_3,
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Index>(value))
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{}
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// Nb: SFINAE to avoid wrong matches with built-in numerical types
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// as int.
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template < typename Sizing_field >
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Mesh_edge_criteria_3
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(
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const Sizing_field& size,
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typename std::enable_if<Mesh_3::Is_mesh_domain_field_3<Tr, Sizing_field>::value>::type* = 0
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)
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{
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p_size_ = new Mesh_3::internal::Sizing_field_container<Sizing_field,
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FT,
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Point_3,
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Index>(size);
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}
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Mesh_edge_criteria_3(const Self& rhs)
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: p_size_(rhs.p_size_->clone()) {}
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/// Destructor
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~Mesh_edge_criteria_3()
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{
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delete p_size_;
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}
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/// Returns size of tuple (p,dim,index)
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FT sizing_field(const Point_3& p, const int dim, const Index& index) const
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{ return (*p_size_)(p,dim,index); }
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private:
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typedef Mesh_3::internal::Sizing_field_interface<FT,Point_3,Index>
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Sizing_field_interface;
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// A pointer to Sizing_field_interface to handle dynamic wrapping of
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// real Sizing_field type
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Sizing_field_interface* p_size_;
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};
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} // end namespace CGAL
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#endif // CGAL_MESH_EDGE_CRITERIA_3_H
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