mirror of https://github.com/CGAL/cgal
116 lines
3.7 KiB
C++
116 lines
3.7 KiB
C++
// Copyright (c) 2009 INRIA Sophia-Antipolis (France).
|
|
// All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org).
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
|
|
//
|
|
//
|
|
// Author(s) : Stéphane Tayeb, Pierre Alliez
|
|
//
|
|
|
|
#ifndef AABB_TRIANGULATION_3_TRIANGLE_PRIMITIVE_H_
|
|
#define AABB_TRIANGULATION_3_TRIANGLE_PRIMITIVE_H_
|
|
|
|
#include <CGAL/license/AABB_tree.h>
|
|
|
|
#include <CGAL/disable_warnings.h>
|
|
|
|
#include <type_traits>
|
|
|
|
namespace CGAL {
|
|
// \ingroup PkgAABBTreeRef
|
|
// Primitive type that wraps a facet handle of a CGAL::Triangulation_3,
|
|
// which is used as id, and allows the construction of the datum on
|
|
// the fly. Since only the facet handle is stored in this primitive,
|
|
// the TriangleMesh from which the AABB tree is built should not be
|
|
// deleted while the AABB tree is in use.
|
|
//
|
|
// \cgalModels `AABBPrimitive`
|
|
// \tparam GeomTraits must provides a \c %Point_3
|
|
// type, used as \c Point, and a \c %Triangle_3 type, used as \c
|
|
// Datum and constructible from three arguments of type \c
|
|
// Point.
|
|
// \tparam Tr must be a
|
|
// \c CGAL::Triangulation_3 whose points have type \c Point.
|
|
//
|
|
// \sa `AABBPrimitive`
|
|
template<typename GeomTraits, typename Tr>
|
|
class AABB_triangulation_3_triangle_primitive
|
|
{
|
|
public:
|
|
typedef typename GeomTraits::Point_3 Point;
|
|
// \name Types
|
|
// @{
|
|
|
|
// Id type.
|
|
typedef typename Tr::Facet Id;
|
|
// Geometric data type.
|
|
typedef typename GeomTraits::Triangle_3 Datum;
|
|
|
|
// @}
|
|
|
|
// Self
|
|
typedef AABB_triangulation_3_triangle_primitive<GeomTraits, Tr> Self;
|
|
|
|
// Constructors
|
|
AABB_triangulation_3_triangle_primitive() {}
|
|
AABB_triangulation_3_triangle_primitive(const AABB_triangulation_3_triangle_primitive& primitive)
|
|
{
|
|
m_facet = primitive.id();
|
|
}
|
|
AABB_triangulation_3_triangle_primitive(const Id& handle)
|
|
: m_facet(handle) { }
|
|
AABB_triangulation_3_triangle_primitive(const Id* ptr)
|
|
: m_facet(*ptr) { }
|
|
template <class Iterator>
|
|
AABB_triangulation_3_triangle_primitive( Iterator it,
|
|
std::enable_if_t<
|
|
std::is_same<Id,typename Iterator::value_type>::value
|
|
>* =0
|
|
) : m_facet(*it) { }
|
|
|
|
|
|
// Default destructor, copy constructor and assignment operator are ok
|
|
|
|
// Returns by constructing on the fly the geometric datum wrapped by the primitive
|
|
Datum datum() const
|
|
{
|
|
typename GeomTraits::Construct_point_3 cp =
|
|
GeomTraits().construct_point_3_object();
|
|
|
|
int i = m_facet.second;
|
|
const Point& a = cp(m_facet.first->vertex((i+1) &3)->point());
|
|
const Point& b = cp(m_facet.first->vertex((i+2) &3)->point());
|
|
const Point& c = cp(m_facet.first->vertex((i+3) &3)->point());
|
|
|
|
return Datum(a,b,c);
|
|
}
|
|
|
|
// Returns a point on the primitive
|
|
Point reference_point() const
|
|
{
|
|
typename GeomTraits::Construct_point_3 cp =
|
|
GeomTraits().construct_point_3_object();
|
|
return cp(m_facet.first->vertex((m_facet.second +1) &3)->point());
|
|
}
|
|
|
|
// Returns the identifier
|
|
const Id& id() const { return m_facet; }
|
|
Id& id() { return m_facet; }
|
|
|
|
private:
|
|
// The id, here a Tr::Facet
|
|
Id m_facet;
|
|
}; // end class AABB_triangulation_3_triangle_primitive
|
|
|
|
|
|
|
|
} // end namespace CGAL
|
|
|
|
#include <CGAL/enable_warnings.h>
|
|
|
|
#endif // AABB_TRIANGULATION_3_TRIANGLE_PRIMITIVE_H_
|