/usr/include/boost/geometry/index/detail/rtree/utilities/gl_draw.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | // Boost.Geometry Index
//
// R-tree OpenGL drawing visitor implementation
//
// Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland.
//
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_UTILITIES_GL_DRAW_HPP
#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_UTILITIES_GL_DRAW_HPP
namespace boost { namespace geometry { namespace index { namespace detail {
namespace utilities {
namespace dispatch {
template <typename Point, size_t Dimension>
struct gl_draw_point
{};
template <typename Point>
struct gl_draw_point<Point, 2>
{
static inline void apply(Point const& p, typename coordinate_type<Point>::type z)
{
glBegin(GL_POINT);
glVertex3f(geometry::get<0>(p), geometry::get<1>(p), z);
glEnd();
}
};
template <typename Box, size_t Dimension>
struct gl_draw_box
{};
template <typename Box>
struct gl_draw_box<Box, 2>
{
static inline void apply(Box const& b, typename coordinate_type<Box>::type z)
{
glBegin(GL_LINE_LOOP);
glVertex3f(geometry::get<min_corner, 0>(b), geometry::get<min_corner, 1>(b), z);
glVertex3f(geometry::get<max_corner, 0>(b), geometry::get<min_corner, 1>(b), z);
glVertex3f(geometry::get<max_corner, 0>(b), geometry::get<max_corner, 1>(b), z);
glVertex3f(geometry::get<min_corner, 0>(b), geometry::get<max_corner, 1>(b), z);
glEnd();
}
};
template <typename Indexable, typename Tag>
struct gl_draw_indexable
{
};
template <typename Indexable>
struct gl_draw_indexable<Indexable, box_tag>
{
static const size_t dimension = geometry::dimension<Indexable>::value;
static inline void apply(Indexable const& i, typename coordinate_type<Indexable>::type z)
{
gl_draw_box<Indexable, dimension>::apply(i, z);
}
};
template <typename Indexable>
struct gl_draw_indexable<Indexable, point_tag>
{
static const size_t dimension = geometry::dimension<Indexable>::value;
static inline void apply(Indexable const& i, typename coordinate_type<Indexable>::type z)
{
gl_draw_point<Indexable, dimension>::apply(i, z);
}
};
} // namespace dispatch
template <typename Indexable> inline
void gl_draw_indexable(Indexable const& i, typename coordinate_type<Indexable>::type z)
{
dispatch::gl_draw_indexable<
Indexable,
typename tag<Indexable>::type
>::apply(i, z);
}
} // namespace utilities
namespace rtree { namespace utilities {
namespace visitors {
template <typename Value, typename Options, typename Translator, typename Box, typename Allocators>
struct gl_draw : public rtree::visitor<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag, true>::type
{
typedef typename rtree::internal_node<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type internal_node;
typedef typename rtree::leaf<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type leaf;
inline gl_draw(Translator const& t,
size_t level_first = 0,
size_t level_last = (std::numeric_limits<size_t>::max)(),
typename coordinate_type<Box>::type z_coord_level_multiplier = 1
)
: tr(t)
, level_f(level_first)
, level_l(level_last)
, z_mul(z_coord_level_multiplier)
, level(0)
{}
inline void operator()(internal_node const& n)
{
typedef typename rtree::elements_type<internal_node>::type elements_type;
elements_type const& elements = rtree::elements(n);
if ( level_f <= level )
{
size_t level_rel = level - level_f;
if ( level_rel == 0 )
glColor3f(0.75f, 0.0f, 0.0f);
else if ( level_rel == 1 )
glColor3f(0.0f, 0.75f, 0.0f);
else if ( level_rel == 2 )
glColor3f(0.0f, 0.0f, 0.75f);
else if ( level_rel == 3 )
glColor3f(0.75f, 0.75f, 0.0f);
else if ( level_rel == 4 )
glColor3f(0.75f, 0.0f, 0.75f);
else if ( level_rel == 5 )
glColor3f(0.0f, 0.75f, 0.75f);
else
glColor3f(0.5f, 0.5f, 0.5f);
for (typename elements_type::const_iterator it = elements.begin();
it != elements.end(); ++it)
{
detail::utilities::gl_draw_indexable(it->first, level_rel * z_mul);
}
}
size_t level_backup = level;
++level;
if ( level < level_l )
{
for (typename elements_type::const_iterator it = elements.begin();
it != elements.end(); ++it)
{
rtree::apply_visitor(*this, *it->second);
}
}
level = level_backup;
}
inline void operator()(leaf const& n)
{
typedef typename rtree::elements_type<leaf>::type elements_type;
elements_type const& elements = rtree::elements(n);
if ( level_f <= level )
{
size_t level_rel = level - level_f;
glColor3f(0.25f, 0.25f, 0.25f);
for (typename elements_type::const_iterator it = elements.begin();
it != elements.end(); ++it)
{
detail::utilities::gl_draw_indexable(tr(*it), level_rel * z_mul);
}
}
}
Translator const& tr;
size_t level_f;
size_t level_l;
typename coordinate_type<Box>::type z_mul;
size_t level;
};
} // namespace visitors
template <typename Rtree> inline
void gl_draw(Rtree const& tree,
size_t level_first = 0,
size_t level_last = (std::numeric_limits<size_t>::max)(),
typename coordinate_type<
typename Rtree::bounds_type
>::type z_coord_level_multiplier = 1
)
{
typedef utilities::view<Rtree> RTV;
RTV rtv(tree);
if ( !tree.empty() )
{
glColor3f(0.75f, 0.75f, 0.75f);
detail::utilities::gl_draw_indexable(tree.bounds(), 0);
}
visitors::gl_draw<
typename RTV::value_type,
typename RTV::options_type,
typename RTV::translator_type,
typename RTV::box_type,
typename RTV::allocators_type
> gl_draw_v(rtv.translator(), level_first, level_last, z_coord_level_multiplier);
rtv.apply_visitor(gl_draw_v);
}
}} // namespace rtree::utilities
}}}} // namespace boost::geometry::index::detail
#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_UTILITIES_GL_DRAW_HPP
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