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// Copyright (c) 2018 GeometryFactory Sarl (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1.1/Classification/include/CGAL/Classification/property_maps.h $
// $Id: include/CGAL/Classification/property_maps.h 08b27d3db14 $
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Simon Giraudot
#ifndef CGAL_CLASSIFICATION_PROPERTY_MAPS_H
#define CGAL_CLASSIFICATION_PROPERTY_MAPS_H
#include <CGAL/license/Classification.h>
#include <CGAL/centroid.h>
#include <CGAL/Bbox_3.h>
#include <CGAL/property_map.h>
#include <CGAL/boost/graph/properties.h>
namespace CGAL
{
namespace Classification
{
/*!
\ingroup PkgClassificationMesh
\brief Property map that constructs the center of mass of the face
of a mesh on-the-fly.
\cgalModels{ReadablePropertyMap}
\tparam FaceGraph model of `FaceGraph`.
\tparam VertexPointMap model of `ReadablePropertyMap` with with
`boost::graph_traits<FaceGraph>::%vertex_descriptor` as key type
and `CGAL::Point_3` as value type.
*/
template <typename FaceGraph,
typename VertexPointMap = typename boost::property_map<FaceGraph,vertex_point_t>::type >
class Face_descriptor_to_center_of_mass_map
{
public:
typedef typename boost::property_traits<VertexPointMap>::value_type Point_3;
typedef typename boost::graph_traits<FaceGraph>::face_descriptor key_type;
typedef Point_3 value_type;
typedef Point_3 reference;
typedef boost::readable_property_map_tag category;
private:
typedef typename boost::graph_traits<FaceGraph>::vertex_descriptor vertex_descriptor;
const FaceGraph* m_mesh;
VertexPointMap m_vpm;
public:
Face_descriptor_to_center_of_mass_map ()
: m_mesh (nullptr) { }
Face_descriptor_to_center_of_mass_map (const FaceGraph* mesh)
: m_mesh (mesh), m_vpm (get (vertex_point, *m_mesh)) { }
Face_descriptor_to_center_of_mass_map (const FaceGraph* mesh, VertexPointMap vpm)
: m_mesh (mesh), m_vpm (vpm) { }
/// \cond SKIP_IN_MANUAL
inline friend value_type get (const Face_descriptor_to_center_of_mass_map& map, key_type f)
{
std::vector<Point_3> points;
for(vertex_descriptor v : vertices_around_face(halfedge(f, *(map.m_mesh)), *(map.m_mesh)))
points.push_back (get (map.m_vpm, v));
return CGAL::centroid (points.begin(), points.end());
}
/// \endcond
};
/*!
\ingroup PkgClassificationMesh
\brief Property map that constructs a face descriptor with a
`bbox()` method from a face descriptor.
\cgalModels{ReadablePropertyMap}
\tparam FaceGraph model of `FaceGraph`.
\tparam VertexPointMap model of `ReadablePropertyMap` with with
`boost::graph_traits<FaceGraph>::%vertex_descriptor` as key type
and `CGAL::Point_3` as value type.
*/
template <typename FaceGraph,
typename VertexPointMap = typename boost::property_map<FaceGraph,vertex_point_t>::type >
class Face_descriptor_to_face_descriptor_with_bbox_map
{
public:
typedef typename boost::graph_traits<FaceGraph>::face_descriptor face_descriptor;
/*!
\brief Face descriptor with a precomputed bounding box.
*/
class face_descriptor_with_bbox
{
face_descriptor m_descriptor;
CGAL::Bbox_3 m_bbox;
public:
face_descriptor_with_bbox (const face_descriptor& descriptor,
const CGAL::Bbox_3& bbox)
: m_descriptor (descriptor), m_bbox (bbox)
{ }
const CGAL::Bbox_3 bbox() const { return m_bbox; }
operator face_descriptor() const { return m_descriptor; }
};
typedef face_descriptor key_type;
typedef face_descriptor_with_bbox value_type;
typedef face_descriptor_with_bbox reference;
typedef boost::readable_property_map_tag category;
private:
typedef typename boost::graph_traits<FaceGraph>::vertex_descriptor vertex_descriptor;
const FaceGraph* m_mesh;
VertexPointMap m_vpm;
public:
Face_descriptor_to_face_descriptor_with_bbox_map ()
: m_mesh (nullptr) { }
Face_descriptor_to_face_descriptor_with_bbox_map (const FaceGraph* mesh)
: m_mesh (mesh), m_vpm (get (vertex_point, *m_mesh)) { }
Face_descriptor_to_face_descriptor_with_bbox_map (const FaceGraph* mesh, VertexPointMap vpm)
: m_mesh (mesh), m_vpm (vpm) { }
/// \cond SKIP_IN_MANUAL
inline friend value_type get (const Face_descriptor_to_face_descriptor_with_bbox_map& map, key_type f)
{
CGAL::Bbox_3 bbox;
for(vertex_descriptor v : vertices_around_face(halfedge(f, *(map.m_mesh)), *(map.m_mesh)))
bbox = bbox + get(map.m_vpm, v).bbox();
return value_type (f, bbox);
}
/// \endcond
};
} // namespace Classification
} // namespace CGAL
#endif // CGAL_CLASSIFICATION_PROPERTY_MAPS_H
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