// Copyright (c) 2015 GeometryFactory (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.
//
// $URL$
// $Id$
//
//
// Author(s)     : Jane Tournois

#ifndef CGAL_POLYGON_MESH_PROCESSING_BOUNDING_BOX_H
#define CGAL_POLYGON_MESH_PROCESSING_BOUNDING_BOX_H

#include <CGAL/license/Polygon_mesh_processing/miscellaneous.h>


#include <CGAL/Bbox_3.h>

#include <boost/graph/graph_traits.hpp>

#include <CGAL/Polygon_mesh_processing/internal/named_function_params.h>
#include <CGAL/Polygon_mesh_processing/internal/named_params_helper.h>

#include <boost/foreach.hpp>

namespace CGAL {

  namespace Polygon_mesh_processing {

    /*!
    * \ingroup PkgPolygonMeshProcessing
    *  computes a bounding box of a polygon mesh.
    *
    * @tparam PolygonMesh a model of `HalfedgeListGraph`
    * @tparam NamedParameters a sequence of \ref namedparameters
    *
    * @param pmesh a polygon mesh
    * @param np optional sequence of \ref namedparameters among the ones listed below
    *
    * \cgalNamedParamsBegin
    *    \cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `pmesh`.
    *       If this parameter is omitted, an internal property map for
    *       `CGAL::vertex_point_t` should be available in `PolygonMesh`\cgalParamEnd
    *    \cgalParamBegin{geom_traits} an instance of a geometric traits class,
    *       providing the functor `Construct_bbox_3` and the function
    *       `Construct_bbox_3 construct_bbox_3_object()`. `Construct_bbox_3`
    *       must provide `BBox_3 operator()(Point_3)` where `Point_3` is the value type
    *       of the vertex point map.
    *     \cgalParamEnd
    * \cgalNamedParamsEnd
    *
    * @return a bounding box of `pmesh`
    */
    template<typename PolygonMesh, typename CGAL_PMP_NP_TEMPLATE_PARAMETERS>
    CGAL::Bbox_3 bbox(const PolygonMesh& pmesh,
                      const CGAL_PMP_NP_CLASS& np)
    {
      using boost::choose_param;
      using boost::get_param;
      typename GetVertexPointMap<PolygonMesh, CGAL_PMP_NP_CLASS>::const_type
        vpm = choose_param(get_param(np, internal_np::vertex_point),
                           get_const_property_map(CGAL::vertex_point, pmesh));

      typedef typename GetGeomTraits<PolygonMesh, CGAL_PMP_NP_CLASS>::type GT;
      GT gt = choose_param(get_param(np, internal_np::geom_traits), GT());
      typename GT::Construct_bbox_3 get_bbox = gt.construct_bbox_3_object();

      typedef typename boost::graph_traits<PolygonMesh>::halfedge_descriptor halfedge_descriptor;

      halfedge_descriptor h0 = *(halfedges(pmesh).first);
      CGAL::Bbox_3 bb = get(vpm, target(h0, pmesh)).bbox();
      BOOST_FOREACH(halfedge_descriptor h, halfedges(pmesh))
      {
        bb += get_bbox( get(vpm, target(h, pmesh)) );
      }
      return bb;
    }

    /*!
    * \ingroup PkgPolygonMeshProcessing
    *  computes a bounding box of a vertex of a polygon mesh.
    *
    * @tparam PolygonMesh a model of `HalfedgeGraph`
    * @tparam NamedParameters a sequence of \ref namedparameters
    *
    * @param vd a descriptor of a vertex in `pmesh`
    * @param pmesh a polygon mesh
    * @param np optional sequence of \ref namedparameters among the ones listed below
    *
    * \cgalNamedParamsBegin
    *    \cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `pmesh`.
    *       If this parameter is omitted, an internal property map for
    *       `CGAL::vertex_point_t` should be available in `PolygonMesh`\cgalParamEnd
    *    \cgalParamBegin{geom_traits} an instance of a geometric traits class,
    *       providing the functor `Construct_bbox_3` and the function
    *       `Construct_bbox_3 construct_bbox_3_object()`. `Construct_bbox_3`
    *       must provide `BBox_3 operator()(Point_3)` where `Point_3` is the value type
    *       of the vertex point map.
    *     \cgalParamEnd
    * \cgalNamedParamsEnd
    *
    * @return a bounding box of `pmesh`
    */
    template<typename PolygonMesh, typename NamedParameters>
    CGAL::Bbox_3 vertex_bbox(typename boost::graph_traits<PolygonMesh>::vertex_descriptor vd,
                             const PolygonMesh& pmesh,
                             const NamedParameters& np)
    {
      using boost::choose_param;
      using boost::get_param;
      typename GetVertexPointMap<PolygonMesh, NamedParameters>::const_type
        vpm = choose_param(get_param(np, internal_np::vertex_point),
                           get_const_property_map(CGAL::vertex_point, pmesh));

      typedef typename GetGeomTraits<PolygonMesh, NamedParameters>::type GT;
      GT gt = choose_param(get_param(np, internal_np::geom_traits), GT());
      typename GT::Construct_bbox_3 get_bbox = gt.construct_bbox_3_object();

      return get_bbox( get(vpm, vd) );
    }

    /*!
    * \ingroup PkgPolygonMeshProcessing
    *  computes a bounding box of an edge of a polygon mesh.
    *
    * @tparam PolygonMesh a model of `HalfedgeGraph`
    * @tparam NamedParameters a sequence of \ref namedparameters
    *
    * @param ed a descriptor of an edge in `pmesh`
    * @param pmesh a polygon mesh
    * @param np optional sequence of \ref namedparameters among the ones listed below
    *
    * \cgalNamedParamsBegin
    *    \cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `pmesh`.
    *       If this parameter is omitted, an internal property map for
    *       `CGAL::vertex_point_t` should be available in `PolygonMesh`\cgalParamEnd
    *    \cgalParamBegin{geom_traits} an instance of a geometric traits class,
    *       providing the functor `Construct_bbox_3` and the function
    *       `Construct_bbox_3 construct_bbox_3_object()`. `Construct_bbox_3`
    *       must provide `BBox_3 operator()(Point_3)` where `Point_3` is the value type
    *       of the vertex point map.
    *     \cgalParamEnd
    * \cgalNamedParamsEnd
    *
    * @return a bounding box of `pmesh`
    */
    template<typename PolygonMesh, typename NamedParameters>
    CGAL::Bbox_3 edge_bbox(typename boost::graph_traits<PolygonMesh>::edge_descriptor ed,
                           const PolygonMesh& pmesh,
                           const NamedParameters& np)
    {
      using boost::choose_param;
      using boost::get_param;
      typename GetVertexPointMap<PolygonMesh, NamedParameters>::const_type
        vpm = choose_param(get_param(np, internal_np::vertex_point),
                           get_const_property_map(CGAL::vertex_point, pmesh));

      typedef typename GetGeomTraits<PolygonMesh, NamedParameters>::type GT;
      GT gt = choose_param(get_param(np, internal_np::geom_traits), GT());
      typename GT::Construct_bbox_3 get_bbox = gt.construct_bbox_3_object();

      return get_bbox( get(vpm, source(ed, pmesh)) ) +
             get_bbox( get(vpm, target(ed, pmesh)) );
    }

    /*!
    * \ingroup PkgPolygonMeshProcessing
    *  computes a bounding box of a face of a polygon mesh.
    *
    * @tparam PolygonMesh a model of `HalfedgeGraph`
    * @tparam NamedParameters a sequence of \ref namedparameters
    *
    * @param fd a descriptor of a face in `pmesh`
    * @param pmesh a polygon mesh
    * @param np optional sequence of \ref namedparameters among the ones listed below
    *
    * \cgalNamedParamsBegin
    *    \cgalParamBegin{vertex_point_map} the property map with the points associated to the vertices of `pmesh`.
    *       If this parameter is omitted, an internal property map for
    *       `CGAL::vertex_point_t` should be available in `PolygonMesh`\cgalParamEnd
    *    \cgalParamBegin{geom_traits} an instance of a geometric traits class,
    *       providing the functor `Construct_bbox_3` and the function
    *       `Construct_bbox_3 construct_bbox_3_object()`. `Construct_bbox_3`
    *       must provide `BBox_3 operator()(Point_3)` where `Point_3` is the value type
    *       of the vertex point map.
    *     \cgalParamEnd
    * \cgalNamedParamsEnd
    *
    * @return a bounding box of `pmesh`
    */
    template<typename PolygonMesh, typename NamedParameters>
    CGAL::Bbox_3 face_bbox(typename boost::graph_traits<PolygonMesh>::face_descriptor fd,
                           const PolygonMesh& pmesh,
                           const NamedParameters& np)
    {
      using boost::choose_param;
      using boost::get_param;
      typename GetVertexPointMap<PolygonMesh, NamedParameters>::const_type
        vpm = choose_param(get_param(np, internal_np::vertex_point),
                           get_const_property_map(CGAL::vertex_point, pmesh));

      typedef typename GetGeomTraits<PolygonMesh, NamedParameters>::type GT;
      GT gt = choose_param(get_param(np, internal_np::geom_traits), GT());
      typename GT::Construct_bbox_3 get_bbox = gt.construct_bbox_3_object();

      typedef typename boost::graph_traits<PolygonMesh>::halfedge_descriptor halfedge_descriptor;

      CGAL::Bbox_3 bb;
      BOOST_FOREACH(halfedge_descriptor h,
                    halfedges_around_face(halfedge(fd, pmesh), pmesh))
      {
        bb += get_bbox( get(vpm, target(h, pmesh)) );
      }
      return bb;
    }

    template<typename PolygonMesh>
    CGAL::Bbox_3 vertex_bbox(typename boost::graph_traits<PolygonMesh>::vertex_descriptor vd,
                               const PolygonMesh& pmesh)
    {
      return vertex_bbox(vd, pmesh,
        CGAL::Polygon_mesh_processing::parameters::all_default());
    }
    template<typename PolygonMesh>
    CGAL::Bbox_3 edge_bbox(typename boost::graph_traits<PolygonMesh>::edge_descriptor ed,
                             const PolygonMesh& pmesh)
    {
      return edge_bbox(ed, pmesh,
        CGAL::Polygon_mesh_processing::parameters::all_default());
    }
    template<typename PolygonMesh>
    CGAL::Bbox_3 face_bbox(typename boost::graph_traits<PolygonMesh>::face_descriptor fd,
                             const PolygonMesh& pmesh)
    {
      return face_bbox(fd, pmesh,
        CGAL::Polygon_mesh_processing::parameters::all_default());
    }

    template<typename PolygonMesh>
    CGAL::Bbox_3 bbox(const PolygonMesh& pmesh)
    {
      return bbox(pmesh,
        CGAL::Polygon_mesh_processing::parameters::all_default());
    }

    // deprecated function
    #ifndef CGAL_NO_DEPRECATED_CODE
    /*!
    * \ingroup PkgPolygonMeshProcessing
    * \deprecated This function is deprecated since \cgal 4.10, `CGAL::Polygon_mesh_processing::bbox()` should be used instead.
    */
    template<typename PolygonMesh, typename CGAL_PMP_NP_TEMPLATE_PARAMETERS>
    CGAL_DEPRECATED CGAL::Bbox_3 bbox_3(const PolygonMesh& pmesh,
                        const CGAL_PMP_NP_CLASS& np)
    {
      return bbox(pmesh, np);
    }

    template<typename PolygonMesh>
    CGAL_DEPRECATED CGAL::Bbox_3 bbox_3(const PolygonMesh& pmesh)
    {
      return bbox(pmesh);
    }
    #endif // CGAL_NO_DEPRECATED_CODE
  }
}

#endif //CGAL_POLYGON_MESH_PROCESSING_BOUNDING_BOX_H

