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cgal/Mesh_3/include/CGAL/Polyhedral_mesh_domain_3.h

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// Copyright (c) 2009 INRIA Sophia-Antipolis (France).
// Copyright (c) 2011 GeometryFactory Sarl (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) : Stéphane Tayeb
//
//******************************************************************************
// File Description :
//
//******************************************************************************
#ifndef CGAL_POLYHEDRAL_MESH_DOMAIN_3_H
#define CGAL_POLYHEDRAL_MESH_DOMAIN_3_H
#include <CGAL/Mesh_3/Robust_intersection_traits_3.h>
#include <CGAL/Mesh_3/Triangle_accessor_primitive.h>
#include <CGAL/Triangle_accessor_3.h>
#include <CGAL/AABB_tree.h>
#include <CGAL/AABB_traits.h>
#include <CGAL/point_generators_3.h>
#include <CGAL/Mesh_3/Creator_weighted_point_3.h>
#include <boost/optional.hpp>
#include <boost/none.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/mpl/vector.hpp>
#include <boost/mpl/contains.hpp>
#include <CGAL/tuple.h>
#include <boost/format.hpp>
#include <boost/variant.hpp>
namespace CGAL {
namespace Mesh_3 {
namespace details {
inline
double
max_length(const Bbox_3& b)
{
return (std::max)(b.xmax()-b.xmin(),
(std::max)(b.ymax()-b.ymin(),b.zmax()-b.zmin()) );
}
// -----------------------------------
// Surface_patch_index_generator
// To use patch_id enclosed in AABB_primitives or not
// -----------------------------------
template < typename Subdomain_index, typename Tag >
struct Surface_patch_index_generator
{
typedef std::pair<Subdomain_index,Subdomain_index> Surface_patch_index;
typedef Surface_patch_index type;
template < typename Primitive_id >
Surface_patch_index operator()(const Primitive_id&)
{ return Surface_patch_index(0,1); }
};
template < typename Subdomain_index >
struct Surface_patch_index_generator<Subdomain_index, CGAL::Tag_true>
{
typedef Subdomain_index Surface_patch_index;
typedef Surface_patch_index type;
template < typename Primitive_id >
Surface_patch_index operator()(const Primitive_id& primitive_id)
{ return primitive_id->patch_id(); }
};
// -----------------------------------
// Index_generator
// Don't use boost::variant if types are the same type
// -----------------------------------
template < typename Subdomain_index, typename Surface_patch_index >
struct Index_generator
{
typedef boost::variant<Subdomain_index,Surface_patch_index> Index;
typedef Index type;
};
template < typename T >
struct Index_generator<T, T>
{
typedef T Index;
typedef Index type;
};
// -----------------------------------
// Geometric traits generator
// -----------------------------------
template < typename Gt,
typename Use_exact_intersection_construction_tag >
struct IGT_generator {};
template < typename Gt >
struct IGT_generator<Gt,CGAL::Tag_true>
{
typedef CGAL::Mesh_3::Robust_intersection_traits_3<Gt> type;
typedef type Type;
};
template < typename Gt >
struct IGT_generator<Gt,CGAL::Tag_false>
{
typedef Gt type;
typedef type Type;
};
} // end namespace details
} // end namespace Mesh_3
/**
* @class Polyhedral_mesh_domain_3
*
*
*/
template<class Polyhedron,
class IGT_,
class TriangleAccessor=Triangle_accessor_3<Polyhedron,IGT_>,
class Use_patch_id_tag=Tag_false,
class Use_exact_intersection_construction_tag = CGAL::Tag_true>
class Polyhedral_mesh_domain_3
{
typedef typename Mesh_3::details::IGT_generator<
IGT_,Use_exact_intersection_construction_tag>::type IGT;
public:
/// Geometric object types
typedef typename IGT::Point_3 Point_3;
typedef typename IGT::Segment_3 Segment_3;
typedef typename IGT::Ray_3 Ray_3;
typedef typename IGT::Line_3 Line_3;
typedef typename IGT::Vector_3 Vector_3;
typedef typename IGT::Sphere_3 Sphere_3;
//-------------------------------------------------------
// Index Types
//-------------------------------------------------------
/// Type of indexes for cells of the input complex
typedef int Subdomain_index;
typedef boost::optional<Subdomain_index> Subdomain;
/// Type of indexes for surface patch of the input complex
typedef typename Mesh_3::details::Surface_patch_index_generator<
Subdomain_index,Use_patch_id_tag>::type Surface_patch_index;
typedef boost::optional<Surface_patch_index> Surface_patch;
/// Type of indexes to characterize the lowest dimensional face of the input
/// complex on which a vertex lie
typedef typename Mesh_3::details::Index_generator<
Subdomain_index, Surface_patch_index>::type Index;
typedef CGAL::cpp0x::tuple<Point_3,Index,int> Intersection;
typedef typename IGT::FT FT;
// Kernel_traits compatibility
typedef IGT R;
private:
typedef Mesh_3::Triangle_accessor_primitive<
TriangleAccessor, IGT> AABB_primitive;
typedef class AABB_traits<IGT,AABB_primitive> AABB_traits;
typedef class AABB_tree<AABB_traits> AABB_tree_;
private:
typedef typename AABB_tree_::Primitive_id AABB_primitive_id;
typedef typename AABB_traits::Bounding_box Bounding_box;
public:
/// Default constructor
Polyhedral_mesh_domain_3()
: tree_()
, bounding_tree_(&tree_) {}
/**
* @brief Constructor. Contruction from a polyhedral surface
* @param polyhedron the polyhedron describing the polyhedral surface
*/
Polyhedral_mesh_domain_3(const Polyhedron& p)
: tree_(TriangleAccessor().triangles_begin(p),
TriangleAccessor().triangles_end(p)),
bounding_tree_(&tree_) // the bounding tree is tree_
{
if(!p.is_pure_triangle()) {
std::cerr << "Your input polyhedron must be triangulated!\n";
CGAL_error_msg("Your input polyhedron must be triangulated!");
}
}
Polyhedral_mesh_domain_3(const Polyhedron& p,
const Polyhedron& bounding_polyhedron)
: tree_(TriangleAccessor().triangles_begin(p),
TriangleAccessor().triangles_end(p))
, bounding_tree_(new AABB_tree_(TriangleAccessor().triangles_begin(bounding_polyhedron),
TriangleAccessor().triangles_end(bounding_polyhedron)))
{
}
/**
* Constructor.
*
* Constructor from a sequence of polyhedral surfaces, and a bounding
* polyhedral surface.
*
* @param InputPolyhedraPtrIterator must an iterator of a sequence of
* pointers to polyhedra
*
* @param bounding_polyhedron reference to the bounding surface
*/
template <typename InputPolyhedraPtrIterator>
Polyhedral_mesh_domain_3(InputPolyhedraPtrIterator begin,
InputPolyhedraPtrIterator end,
const Polyhedron& bounding_polyhedron)
{
if(begin != end) {
for(; begin != end; ++begin) {
tree_.insert(TriangleAccessor().triangles_begin(**begin),
TriangleAccessor().triangles_end(**begin));
}
tree_.build();
bounding_tree_ =
new AABB_tree_(TriangleAccessor().triangles_begin(bounding_polyhedron),
TriangleAccessor().triangles_end(bounding_polyhedron));
}
else {
tree_.rebuild(TriangleAccessor().triangles_begin(bounding_polyhedron),
TriangleAccessor().triangles_end(bounding_polyhedron));
bounding_tree_ = &tree_;
}
}
/**
* Constructor.
*
* Constructor from a sequence of polyhedral surfaces, without bounding
* surface. The domain will always answer false to "is_in_domain"
* queries.
*
* @param InputPolyhedraPtrIterator must an iterator of a sequence of
* pointers to polyhedra
*/
template <typename InputPolyhedraPtrIterator>
Polyhedral_mesh_domain_3(InputPolyhedraPtrIterator begin,
InputPolyhedraPtrIterator end)
{
if(begin != end) {
for(; begin != end; ++begin) {
tree_.insert(TriangleAccessor().triangles_begin(**begin),
TriangleAccessor().triangles_end(**begin));
}
tree_.build();
}
bounding_tree_ = 0;
}
/// Destructor
~Polyhedral_mesh_domain_3() {
if(bounding_tree_ != 0 && bounding_tree_ != &tree_) {
delete bounding_tree_;
}
}
/**
* Constructs a set of \ccc{n} points on the surface, and output them to
* the output iterator \ccc{pts} whose value type is required to be
* \ccc{std::pair<Points_3, Index>}.
*/
struct Construct_initial_points
{
Construct_initial_points(const Polyhedral_mesh_domain_3& domain)
: r_domain_(domain) {}
template<class OutputIterator>
OutputIterator operator()(OutputIterator pts, const int n = 8) const;
private:
const Polyhedral_mesh_domain_3& r_domain_;
};
Construct_initial_points construct_initial_points_object() const
{
return Construct_initial_points(*this);
}
/**
* Returns true if point~\ccc{p} is in the domain. If \ccc{p} is in the
* domain, the parameter index is set to the index of the subdomain
* including $p$. It is set to the default value otherwise.
*/
struct Is_in_domain
{
Is_in_domain(const Polyhedral_mesh_domain_3& domain)
: r_domain_(domain) {}
Subdomain operator()(const Point_3& p) const;
private:
const Polyhedral_mesh_domain_3& r_domain_;
};
Is_in_domain is_in_domain_object() const { return Is_in_domain(*this); }
Point_3 project_on_surface(const Point_3& p) const
{
return tree_.closest_point(p);
}
/// Allowed query types
typedef boost::mpl::vector<Segment_3, Ray_3, Line_3> Allowed_query_types;
/**
* Returns true is the element \ccc{type} intersect properly any of the
* surface patches describing the either the domain boundary or some
* subdomain boundary.
* \ccc{Type} is either \ccc{Segment_3}, \ccc{Ray_3} or \ccc{Line_3}.
* Parameter index is set to the index of the intersected surface patch
* if \ccc{true} is returned and to the default \ccc{Surface_patch_index}
* value otherwise.
*/
struct Do_intersect_surface
{
Do_intersect_surface(const Polyhedral_mesh_domain_3& domain)
: r_domain_(domain) {}
template <typename Query>
typename boost::enable_if<typename boost::mpl::contains<Allowed_query_types,
Query>::type,
Surface_patch>::type
operator()(const Query& q) const
{
// Check first the bounding_tree
boost::optional<AABB_primitive_id> primitive_id =
r_domain_.bounding_tree_ == 0 ?
boost::none :
r_domain_.bounding_tree_->any_intersected_primitive(q);
if ( primitive_id )
{
return Surface_patch(r_domain_.make_surface_index(*primitive_id));
}
// then the other trees
else if ( r_domain_.bounding_tree_ != &r_domain_.tree_ )
{
primitive_id = r_domain_.tree_.any_intersected_primitive(q);
if ( primitive_id )
{
return Surface_patch(r_domain_.make_surface_index(*primitive_id));
}
}
return Surface_patch();
}
private:
const Polyhedral_mesh_domain_3& r_domain_;
};
Do_intersect_surface do_intersect_surface_object() const
{
return Do_intersect_surface(*this);
}
/**
* Returns a point in the intersection of the primitive \ccc{type}
* with some boundary surface.
* \ccc{Type1} is either \ccc{Segment_3}, \ccc{Ray_3} or \ccc{Line_3}.
* The integer \ccc{dimension} is set to the dimension of the lowest
* dimensional face in the input complex containing the returned point, and
* \ccc{index} is set to the index to be stored at a mesh vertex lying
* on this face.
*/
struct Construct_intersection
{
Construct_intersection(const Polyhedral_mesh_domain_3& domain)
: r_domain_(domain) {}
template <typename Query>
typename boost::enable_if<typename boost::mpl::contains<Allowed_query_types,
Query>::type,
Intersection>::type
operator()(const Query& q) const
{
typedef boost::optional<
typename AABB_tree_::Object_and_primitive_id> AABB_intersection;
typedef Point_3 Bare_point;
CGAL_precondition(r_domain_.do_intersect_surface_object()(q));
AABB_intersection intersection =
r_domain_.bounding_tree_ == 0 ?
AABB_intersection() :
r_domain_.bounding_tree_->any_intersection(q);
if(! intersection &&
r_domain_.bounding_tree_ != &r_domain_.tree_) {
intersection = r_domain_.tree_.any_intersection(q);
}
if ( intersection )
{
// Get primitive
AABB_primitive_id primitive_id = (*intersection).second;
// intersection may be either a point or a segment
if ( const Bare_point* p_intersect_pt =
object_cast<Bare_point>(&(*intersection).first) )
{
return Intersection(*p_intersect_pt,
r_domain_.index_from_surface_patch_index(
r_domain_.make_surface_index(primitive_id)),
2);
}
else if ( const Segment_3* p_intersect_seg =
object_cast<Segment_3>(&(*intersection).first) )
{
return Intersection(p_intersect_seg->source(),
r_domain_.index_from_surface_patch_index(
r_domain_.make_surface_index(primitive_id)),
2);
}
else
CGAL_error_msg("Mesh_3 error : AABB_tree any_intersection result is "
"not a point nor a segment");
}
// Should not happen
return Intersection();
}
private:
const Polyhedral_mesh_domain_3& r_domain_;
};
Construct_intersection construct_intersection_object() const
{
return Construct_intersection(*this);
}
/**
* Returns the index to be stored in a vertex lying on the surface identified
* by \c index.
*/
Index index_from_surface_patch_index(const Surface_patch_index& index) const
{ return Index(index); }
/**
* Returns the index to be stored in a vertex lying in the subdomain
* identified by \c index.
*/
Index index_from_subdomain_index(const Subdomain_index& index) const
{ return Index(index); }
/**
* Returns the \c Surface_patch_index of the surface patch
* where lies a vertex with dimension 2 and index \c index.
*/
Surface_patch_index surface_patch_index(const Index& index) const
{ return boost::get<Surface_patch_index>(index); }
/**
* Returns the index of the subdomain containing a vertex
* with dimension 3 and index \c index.
*/
Subdomain_index subdomain_index(const Index& index) const
{ return boost::get<Subdomain_index>(index); }
// -----------------------------------
// Backward Compatibility
// -----------------------------------
#ifndef CGAL_MESH_3_NO_DEPRECATED_SURFACE_INDEX
typedef Surface_patch_index Surface_index;
Index index_from_surface_index(const Surface_index& index) const
{ return index_from_surface_patch_index(index); }
Surface_index surface_index(const Index& index) const
{ return surface_patch_index(index); }
#endif // CGAL_MESH_3_NO_DEPRECATED_SURFACE_INDEX
// -----------------------------------
// End backward Compatibility
// -----------------------------------
public:
Surface_patch_index make_surface_index(
const AABB_primitive_id& primitive_id = AABB_primitive_id() ) const
{
Mesh_3::details::Surface_patch_index_generator<Subdomain_index,Use_patch_id_tag>
generator;
return generator(primitive_id);
}
// Undocumented function, used to implement a sizing field that
// computes lfs using this AABB tree. That avoids to rebuild the same
// tree.
typedef AABB_tree_ AABB_tree;
const AABB_tree& aabb_tree() const {
return tree_;
}
protected:
void add_primitives(const Polyhedron& p)
{
tree_.insert(TriangleAccessor().triangles_begin(p),
TriangleAccessor().triangles_end(p));
tree_.build();
}
private:
/// The AABB tree: intersection detection and more
AABB_tree_ tree_;
AABB_tree_* bounding_tree_;
private:
// Disabled copy constructor & assignment operator
typedef Polyhedral_mesh_domain_3 Self;
Polyhedral_mesh_domain_3(const Self& src);
Self& operator=(const Self& src);
}; // end class Polyhedral_mesh_domain_3
template<typename P_, typename IGT_, typename TA, typename Tag, typename E_tag_>
template<class OutputIterator>
OutputIterator
Polyhedral_mesh_domain_3<P_,IGT_,TA,Tag,E_tag_>::
Construct_initial_points::operator()(OutputIterator pts,
const int n) const
{
typename IGT::Construct_ray_3 ray = IGT().construct_ray_3_object();
typename IGT::Construct_vector_3 vector = IGT().construct_vector_3_object();
const Bounding_box bbox = r_domain_.tree_.bbox();
const Point_3 center( FT( (bbox.xmin() + bbox.xmax()) / 2),
FT( (bbox.ymin() + bbox.ymax()) / 2),
FT( (bbox.zmin() + bbox.zmax()) / 2) );
Random_points_on_sphere_3<Point_3> random_point(1.);
int i = n;
#ifdef CGAL_MESH_3_VERBOSE
std::cerr << "construct initial points:" << std::endl;
#endif
// Point construction by ray shooting from the center of the enclosing bbox
while ( i > 0 )
{
const Ray_3 ray_shot = ray(center, vector(CGAL::ORIGIN,*random_point));
if(r_domain_.do_intersect_surface_object()(ray_shot)) {
Intersection intersection = r_domain_.construct_intersection_object()(ray_shot);
*pts++ = std::make_pair(CGAL::cpp0x::get<0>(intersection),
CGAL::cpp0x::get<1>(intersection));
--i;
#ifdef CGAL_MESH_3_VERBOSE
std::cerr << boost::format("\r \r"
"%1%/%2% initial point(s) found...")
% (n - i)
% n;
#endif
}
++random_point;
}
#ifdef CGAL_MESH_3_VERBOSE
std::cerr << std::endl;
#endif
return pts;
}
template<typename P_, typename IGT_, typename TA, typename Tag, typename E_tag_>
typename Polyhedral_mesh_domain_3<P_,IGT_,TA,Tag,E_tag_>::Subdomain
Polyhedral_mesh_domain_3<P_,IGT_,TA,Tag,E_tag_>::
Is_in_domain::operator()(const Point_3& p) const
{
if(r_domain_.bounding_tree_ == 0) return Subdomain();
const Bounding_box bbox = r_domain_.bounding_tree_->bbox();
if( p.x() < bbox.xmin() || p.x() > bbox.xmax()
|| p.y() < bbox.ymin() || p.y() > bbox.ymax()
|| p.z() < bbox.zmin() || p.z() > bbox.zmax() )
{
return Subdomain();
}
// Shoot ray
typename IGT::Construct_ray_3 ray = IGT().construct_ray_3_object();
typename IGT::Construct_vector_3 vector = IGT().construct_vector_3_object();
Random_points_on_sphere_3<Point_3> random_point(1.);
const Ray_3 ray_shot = ray(p, vector(CGAL::ORIGIN,*random_point));
if ( (r_domain_.bounding_tree_->number_of_intersected_primitives(ray_shot)&1) == 1 )
return Subdomain(Subdomain_index(1));
else
return Subdomain();
}
} // end namespace CGAL
#endif // POLYHEDRAL_MESH_TRAITS_3_H_
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