mirror of https://github.com/CGAL/cgal
211 lines
8.9 KiB
C++
211 lines
8.9 KiB
C++
// Copyright (c) 2012 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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// $URL$
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// $Id$
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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) : Sebastien Loriot
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//
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#ifndef CGAL_AABB_HALFEDGE_GRAPH_SEGMENT_PRIMITIVE_H
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#define CGAL_AABB_HALFEDGE_GRAPH_SEGMENT_PRIMITIVE_H
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#include <CGAL/license/AABB_tree.h>
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#include <CGAL/disable_warnings.h>
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#include <CGAL/AABB_primitive.h>
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#include <CGAL/boost/graph/property_maps.h>
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#include <iterator>
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#include <boost/mpl/and.hpp>
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#include <CGAL/type_traits/is_iterator.h>
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#include <CGAL/Default.h>
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namespace CGAL {
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/*!
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* \ingroup PkgAABBTreeRef
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* Primitive type for an edge of a polyhedral surface.
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* It wraps an `edge_descriptor` into a 3D segment.
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* The class model of `HalfedgeGraph` from which the primitive is built should not be deleted
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* while the AABB tree holding the primitive is in use.
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* The type of the 3D segment is taken from the kernel of the point type which is the value type
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* of `VertexPointPMap` (using the `Kernel_traits` mechanism).
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* The segment type of the primitive (`Datum`) is `CGAL::Kernel_traits< boost::property_traits< VertexPointPMap >::%value_type >::%Kernel::Segment_3`.
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*
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* \cgalModelsBareBegin
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* \cgalModelsBare{`AABBPrimitive` if `OneHalfedgeGraphPerTree` is `CGAL::Tag_false`}
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* \cgalModelsBare{`AABBPrimitiveWithSharedData` if `OneHalfedgeGraphPerTree` is `CGAL::Tag_true`}
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* \cgalModelsBareEnd
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*
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* \tparam HalfedgeGraph is a model of the halfedge graph concept.
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* as key type and a \cgal Kernel `Point_3` as value type.
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* \tparam VertexPointPMap is a property map with `boost::graph_traits<HalfedgeGraph>::%vertex_descriptor`.
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* The default is `typename boost::property_map< HalfedgeGraph,vertex_point_t>::%const_type`.
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* \tparam OneHalfedgeGraphPerTree is either `CGAL::Tag_true` or `CGAL::Tag_false`.
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* In the former case, we guarantee that all the primitives will be from a
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* common `HalfedgeGraph` and some data will be factorized so that the size of
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* the primitive is reduced. In the latter case, the primitives can be from
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* different graphs and extra storage is required in the primitives. The default is `CGAL::Tag_true`.
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* \tparam CacheDatum is either `CGAL::Tag_true` or `CGAL::Tag_false`. In the former case, the datum is
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* stored in the primitive, while in the latter it is constructed on the fly to reduce
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* the memory footprint. The default is `CGAL::Tag_false` (datum is not stored).
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*
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* \sa `AABBPrimitive`
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* \sa `AABB_primitive<Id,ObjectPropertyMap,PointPropertyMapPolyhedron,ExternalPropertyMaps,CacheDatum>`
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* \sa `AABB_face_graph_triangle_primitive<FaceGraph,OneFaceGraphPerTree,CacheDatum>`
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* \sa \link BGLPolyGT `boost::graph_traits<Polyhedron>` \endlink
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*/
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template < class HalfedgeGraph,
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class VertexPointPMap = Default,
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class OneHalfedgeGraphPerTree = Tag_true,
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class CacheDatum = Tag_false >
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class AABB_halfedge_graph_segment_primitive
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#ifndef DOXYGEN_RUNNING
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: public AABB_primitive< std::conditional_t<OneHalfedgeGraphPerTree::value,
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typename boost::graph_traits<HalfedgeGraph>::edge_descriptor,
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std::pair<typename boost::graph_traits<HalfedgeGraph>::edge_descriptor, const HalfedgeGraph*> >,
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Segment_from_edge_descriptor_map<
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HalfedgeGraph,
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typename Default::Get<VertexPointPMap,
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typename boost::property_map< HalfedgeGraph,
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vertex_point_t>::const_type >::type >,
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Source_point_from_edge_descriptor_map<
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HalfedgeGraph,
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typename Default::Get<VertexPointPMap,
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typename boost::property_map< HalfedgeGraph,
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vertex_point_t>::const_type >::type >,
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OneHalfedgeGraphPerTree,
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CacheDatum >
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#endif
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{
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typedef typename Default::Get<VertexPointPMap,typename boost::property_map< HalfedgeGraph,vertex_point_t>::const_type >::type VertexPointPMap_;
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typedef typename boost::graph_traits<HalfedgeGraph>::edge_descriptor ED;
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typedef std::conditional_t<OneHalfedgeGraphPerTree::value, ED, std::pair<ED, const HalfedgeGraph*> > Id_;
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typedef Segment_from_edge_descriptor_map<HalfedgeGraph,VertexPointPMap_> Segment_property_map;
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typedef Source_point_from_edge_descriptor_map<HalfedgeGraph,VertexPointPMap_> Point_property_map;
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typedef AABB_primitive< Id_,
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Segment_property_map,
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Point_property_map,
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OneHalfedgeGraphPerTree,
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CacheDatum > Base;
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ED make_id(ED ed, const HalfedgeGraph&, Tag_true)
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{
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return ed;
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}
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std::pair<ED, const HalfedgeGraph*> make_id(ED ed, const HalfedgeGraph& fg, Tag_false)
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{
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return std::make_pair(ed, &fg);
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}
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public:
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#ifdef DOXYGEN_RUNNING
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/// \name Types
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/// @{
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/*!
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The point type.
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*/
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typedef boost::property_traits< boost::property_map< HalfedgeGraph, vertex_point_t>::const_type >::value_type Point;
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/*!
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Geometric data type.
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*/
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typedef Kernel_traits<Point>::Kernel::Segment_3 Datum;
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/*!
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Id type:
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- `boost::graph_traits<HalfedgeGraph>::%edge_descriptor` if `OneHalfedgeGraphPerTree` is `Tag_true`
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- `std::pair<boost::graph_traits<HalfedgeGraph>::%edge_descriptor, const HalfedgeGraph*>` if `OneHalfedgeGraphPerTree` is `Tag_false`
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*/
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unspecified_type Id;
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/// @}
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/*!
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If `OneHalfedgeGraphPerTree` is CGAL::Tag_true, constructs a `Shared_data` object from a reference to the halfedge graph.
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*/
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static unspecified_type construct_shared_data( HalfedgeGraph& graph );
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#else
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typedef typename Base::Id Id;
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#endif
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typedef typename boost::graph_traits<HalfedgeGraph>::edge_descriptor edge_descriptor;
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#ifdef DOXYGEN_RUNNING
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/*!
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constructs a primitive.
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\tparam Iterator is an input iterator with `Id` as value type.
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This \ref AABB_tree/AABB_halfedge_graph_edge_example.cpp "example" gives a way to call this constructor
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using the insert-by-range method of the class `AABB_tree<Traits>`.
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If `VertexPointPMap` is the default of the class, an additional constructor
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is available with `vppm` set to `boost::get(vertex_point, graph)`.
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*/
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template <class Iterator>
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AABB_halfedge_graph_segment_primitive(Iterator it, const HalfedgeGraph& graph, VertexPointPMap vppm);
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/*!
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constructs a primitive.
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If `VertexPointPMap` is the default of the class, an additional constructor
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is available with `vppm` set to `boost::get(vertex_point, graph)`.
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*/
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AABB_halfedge_graph_segment_primitive(edge_descriptor ed, const HalfedgeGraph& graph, VertexPointPMap vppm);
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#else
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template <class Iterator>
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AABB_halfedge_graph_segment_primitive(Iterator it, const HalfedgeGraph& graph, VertexPointPMap_ vppm)
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: Base( Id_(make_id(*it, graph, OneHalfedgeGraphPerTree())),
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Segment_property_map(const_cast<HalfedgeGraph*>(&graph), vppm),
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Point_property_map(const_cast<HalfedgeGraph*>(&graph), vppm) )
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{}
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AABB_halfedge_graph_segment_primitive(edge_descriptor ed, const HalfedgeGraph& graph, VertexPointPMap_ vppm)
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: Base( Id_(make_id(ed, graph, OneHalfedgeGraphPerTree())),
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Segment_property_map(const_cast<HalfedgeGraph*>(&graph), vppm),
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Point_property_map(const_cast<HalfedgeGraph*>(&graph), vppm) )
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{}
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template <class Iterator>
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AABB_halfedge_graph_segment_primitive(Iterator it, const HalfedgeGraph& graph)
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: Base( Id_(make_id(*it, graph, OneHalfedgeGraphPerTree())),
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Segment_property_map(const_cast<HalfedgeGraph*>(&graph)),
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Point_property_map(const_cast<HalfedgeGraph*>(&graph)) ){}
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AABB_halfedge_graph_segment_primitive(edge_descriptor ed, const HalfedgeGraph& graph)
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: Base( Id_(make_id(ed, graph, OneHalfedgeGraphPerTree())),
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Segment_property_map(const_cast<HalfedgeGraph*>(&graph)),
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Point_property_map(const_cast<HalfedgeGraph*>(&graph)) ){}
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#endif
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/// \internal
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typedef internal::Cstr_shared_data<HalfedgeGraph, Base, Segment_property_map, Point_property_map, OneHalfedgeGraphPerTree> Cstr_shared_data;
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/// \internal
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static
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typename Cstr_shared_data::Shared_data
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construct_shared_data(const HalfedgeGraph& graph)
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{
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return Cstr_shared_data::construct_shared_data(const_cast<HalfedgeGraph&>(graph));
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}
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static
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typename Cstr_shared_data::Shared_data
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construct_shared_data(const HalfedgeGraph& graph, const VertexPointPMap_& vpm)
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{
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return Cstr_shared_data::construct_shared_data(const_cast<HalfedgeGraph&>(graph), vpm);
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}
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};
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} // end namespace CGAL
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#include <CGAL/enable_warnings.h>
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#endif // CGAL_AABB_HALFEDGE_GRAPH_SEGMENT_PRIMITIVE_H
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