/usr/include/mapnik/memory_featureset.hpp is in libmapnik-dev 2.2.0+ds1-6build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 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 MAPNIK_MEMORY_FEATURESET_HPP
#define MAPNIK_MEMORY_FEATURESET_HPP
// mapnik
#include <mapnik/box2d.hpp>
#include <mapnik/geometry.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/memory_datasource.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/raster.hpp>
#include <deque>
namespace mapnik {
class memory_featureset : public Featureset
{
public:
memory_featureset(box2d<double> const& bbox, memory_datasource const& ds, bool bbox_check = true)
: bbox_(bbox),
pos_(ds.features_.begin()),
end_(ds.features_.end()),
type_(ds.type()),
bbox_check_(bbox_check)
{}
memory_featureset(box2d<double> const& bbox, std::deque<feature_ptr> const& features, bool bbox_check = true)
: bbox_(bbox),
pos_(features.begin()),
end_(features.end()),
type_(datasource::Vector),
bbox_check_(bbox_check)
{}
virtual ~memory_featureset() {}
feature_ptr next()
{
while (pos_ != end_)
{
if (!bbox_check_)
{
return *pos_++;
}
else
{
if (type_ == datasource::Raster)
{
raster_ptr const& source = (*pos_)->get_raster();
if (source && bbox_.intersects(source->ext_))
{
return *pos_++;
}
}
else
{
for (unsigned i=0; i<(*pos_)->num_geometries();++i)
{
geometry_type & geom = (*pos_)->get_geometry(i);
if (bbox_.intersects(geom.envelope()))
{
return *pos_++;
}
}
}
++pos_;
}
}
return feature_ptr();
}
private:
box2d<double> bbox_;
std::deque<feature_ptr>::const_iterator pos_;
std::deque<feature_ptr>::const_iterator end_;
datasource::datasource_t type_;
bool bbox_check_;
};
}
#endif // MAPNIK_MEMORY_FEATURESET_HPP
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