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
|
/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2025 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#ifndef SHAPE_INDEX_FEATURESET_HPP
#define SHAPE_INDEX_FEATURESET_HPP
// stl
#include <set>
#include <vector>
// mapnik
#include <mapnik/geom_util.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/unicode.hpp>
#include <mapnik/value/types.hpp>
// boost
#include <boost/utility.hpp>
#include "shape_datasource.hpp"
#include "shape_io.hpp"
using mapnik::box2d;
using mapnik::context_ptr;
using mapnik::feature_ptr;
using mapnik::Featureset;
namespace mapnik {
namespace detail {
struct node
{
node() = default;
node(std::uint64_t offset_, std::int32_t start_, std::int32_t end_, box2d<float>&& box_)
: offset(offset_),
start(start_),
end(end_),
box(std::move(box_))
{}
std::uint64_t offset;
std::int32_t start;
std::int32_t end;
mapnik::box2d<float> box;
};
} // namespace detail
} // namespace mapnik
template<typename filterT>
class shape_index_featureset : public Featureset
{
public:
shape_index_featureset(filterT const& filter,
std::unique_ptr<shape_io>&& shape_ptr,
std::set<std::string> const& attribute_names,
std::string const& encoding,
std::string const& shape_name,
int row_limit);
virtual ~shape_index_featureset();
feature_ptr next();
private:
filterT filter_;
context_ptr ctx_;
std::unique_ptr<shape_io> shape_ptr_;
std::unique_ptr<mapnik::transcoder> const tr_;
std::vector<mapnik::detail::node> positions_;
std::vector<mapnik::detail::node>::iterator itr_;
std::vector<int> attr_ids_;
mapnik::value_integer row_limit_;
mutable int count_;
mutable box2d<double> feature_bbox_;
};
#endif // SHAPE_INDEX_FEATURESET_HPP
|
