102 lines
3 KiB
C++
102 lines
3 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#include <iostream>
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#include <string>
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#include <mapnik/geometry.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/params.hpp>
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#include <mapnik/datasource.hpp>
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#include <mapnik/datasource_cache.hpp>
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#include <mapnik/util/geometry_to_wkb.hpp>
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int main (int argc, char ** argv )
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{
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if ( argc !=2)
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{
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std::cerr << "Usage: " << argv[0] << " <path-to-shapefile>\n";
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return EXIT_SUCCESS;
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}
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std::cerr << "Geometry to WKB converter\n";
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mapnik::datasource_cache::instance().register_datasources("/opt/mapnik/lib/mapnik/input/");
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std::string filename(argv[1]);
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std::cerr << filename << std::endl;
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mapnik::parameters p;
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p["type"] = "shape";
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p["file"] = filename;
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mapnik::datasource_ptr ds;
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try
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{
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ds = mapnik::datasource_cache::instance().create(p);
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}
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catch ( ... )
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{
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std::cerr << "Can't create datasource!\n";
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return EXIT_FAILURE;
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}
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if (ds)
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{
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std::cerr << ds->envelope() << std::endl;
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mapnik::query q(ds->envelope());
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mapnik::layer_descriptor layer_desc = ds->get_descriptor();
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for (mapnik::attribute_descriptor const& attr_desc : layer_desc.get_descriptors())
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{
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q.add_property_name(attr_desc.get_name());
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}
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mapnik::featureset_ptr fs = ds->features(q);
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mapnik::feature_ptr f = fs->next();
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while(f)
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{
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std::cerr << *f << std::endl;
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mapnik::geometry::geometry<double> const& geom = f->get_geometry();
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// NDR
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{
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mapnik::util::wkb_buffer_ptr wkb = mapnik::util::to_wkb(geom,mapnik::wkbNDR);
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std::cerr << mapnik::util::detail::to_hex(wkb->buffer(),wkb->size()) << std::endl;
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}
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// XDR
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{
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mapnik::util::wkb_buffer_ptr wkb = mapnik::util::to_wkb(geom,mapnik::wkbXDR);
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std::cerr << mapnik::util::detail::to_hex(wkb->buffer(),wkb->size()) << std::endl;
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}
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f = fs->next();
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}
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}
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return EXIT_SUCCESS;
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}
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