88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
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/*****************************************************************************
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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) 2007 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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//$Id$
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#include <iostream>
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#include <fstream>
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// mapnik
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#include <mapnik/global.hpp>
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#include <mapnik/datasource.hpp>
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#include <mapnik/box2d.hpp>
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#include <mapnik/geometry.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/feature_layer_desc.hpp>
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#include <mapnik/wkb.hpp>
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#include <mapnik/unicode.hpp>
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// ogr
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#include "geos_featureset.hpp"
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#include "geos_converter.hpp"
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using std::clog;
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using std::endl;
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using mapnik::query;
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using mapnik::box2d;
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using mapnik::coord2d;
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using mapnik::CoordTransform;
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using mapnik::Feature;
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using mapnik::feature_ptr;
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using mapnik::geometry_utils;
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using mapnik::transcoder;
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geos_featureset::geos_featureset(const std::string& geometry,
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const std::string& extent,
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const std::string& encoding,
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const bool multiple_geometries)
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: geometry_(geometry),
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tr_(new transcoder(encoding)),
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multiple_geometries_(multiple_geometries),
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extent_(GEOSGeomFromWKT(extent.c_str()))
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{
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}
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geos_featureset::~geos_featureset() {}
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feature_ptr geos_featureset::next()
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{
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geos_feature_ptr feat (GEOSGeomFromWKT(geometry_.c_str()));
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if ((*feat) != NULL)
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{
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GEOSGeometry* geom = (*feat);
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GEOSGeometry* extent = (*extent_);
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if (GEOSisValid(geom) && GEOSisValid(extent) && GEOSWithin(geom, extent))
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{
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feature_ptr feature(new Feature(0));
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geos_converter::convert_geometry (geom, feature, multiple_geometries_);
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return feature;
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}
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}
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return feature_ptr();
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}
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