/usr/include/CGAL/Implicit_surface_3.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | // Copyright (c) 2006-2007 INRIA Sophia-Antipolis (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) : Laurent RINEAU
#ifndef CGAL_IMPLICIT_SURFACE_3_H
#define CGAL_IMPLICIT_SURFACE_3_H
#include <CGAL/make_surface_mesh.h>
#include <CGAL/Surface_mesher/Implicit_surface_oracle_3.h>
#include <functional>
namespace CGAL {
template<
typename GT,
typename Function_
>
class Implicit_surface_3
{
public:
typedef GT Geom_traits;
typedef typename Geom_traits::Sphere_3 Sphere_3;
typedef typename Geom_traits::FT FT;
typedef typename Geom_traits::Point_3 Point;
typedef Function_ Function;
typedef Implicit_surface_3<Geom_traits, Function> Self;
Function& function() { return func; }
typedef Surface_mesher::Implicit_surface_oracle_3<
Geom_traits,
Self> Surface_mesher_traits_3;
Implicit_surface_3(Function f,
const Sphere_3 bounding_sphere,
const FT error_bound = FT(1e-3),
Geom_traits gt = Geom_traits())
: func(f),
sphere(bounding_sphere),
gt(gt)
{
squared_error = error_bound * error_bound;
squared_error = squared_error *
gt.compute_squared_radius_3_object()(bounding_sphere);
}
FT operator()(Point p) const
{
return func(p);
}
const FT& squared_error_bound() const
{
return squared_error;
}
const Sphere_3& bounding_sphere() const
{
return sphere;
}
const Sphere_3& bounding_sphere_squared_radius() const
{
return gt.compute_squared_radius_3_object()(sphere);
}
template <typename Vertex_handle>
bool vertices_not_on_same_surface_patch(const Vertex_handle& v1,
const Vertex_handle& v2,
const Vertex_handle& v3) const
{
return
v1->point().element_index() != v2->point().element_index() ||
v1->point().element_index() != v3->point().element_index();
}
const Function& function() const
{
return func;
}
private:
Function func;
Sphere_3 sphere;
FT squared_error;
Geom_traits gt;
}; // end Implicit_surface_3
template <typename GT, typename Function>
Implicit_surface_3<GT, Function>
make_implicit_surface_3(GT, Function f,
typename GT::Sphere_3 sphere,
typename GT::FT error_bound)
{
typedef Implicit_surface_3<GT, Function> surface;
return surface(f, sphere, error_bound);
}
// template <typename GT, typename Function>
// struct Surface_mesh_traits_generator_3<Implicit_surface_3<GT, Function> >
// {
// typedef Implicit_surface_3<GT, Function> Surface_type;
// typedef typename Surface_mesher::Implicit_surface_oracle_3<GT,
// Surface_type> Type;
// typedef Type type; // Boost meta-programming compatibility
// };
// non documented class
template <typename FT, typename Point>
class Implicit_function_wrapper : public std::unary_function<Point, FT>
{
typedef FT (*Implicit_function)(FT, FT, FT);
Implicit_function function;
public:
Implicit_function_wrapper(Implicit_function f) : function(f) {}
FT operator()(Point p) const
{
return function(p.x(), p.y(), p.z());
}
};
} // end namespace CGAL
#endif // CGAL_IMPLICIT_SURFACE_3_H
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