92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
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/* This file is part of Mapnik (c++ mapping toolkit)
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* Copyright (C) 2005 Artem Pavlenko
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*
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* Mapnik is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//$Id: raster_datasource.cc 44 2005-04-22 18:53:54Z pavlenko $
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#include "raster_datasource.hh"
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#include "image_reader.hh"
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#include "raster_featureset.hh"
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#include "raster_info.hh"
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DATASOURCE_PLUGIN(raster_datasource);
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raster_datasource::raster_datasource(const Parameters& params)
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: extent_()
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{
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filename_=params.get("file");
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format_=params.get("format");
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double lox,loy,hix,hiy;
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fromString<double>(params.get("lox"),lox);
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fromString<double>(params.get("loy"),loy);
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fromString<double>(params.get("hix"),hix);
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fromString<double>(params.get("hiy"),hiy);
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extent_=Envelope<double>(lox,loy,hix,hiy);
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}
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raster_datasource::~raster_datasource()
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{
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}
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std::string raster_datasource::name_="raster";
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int raster_datasource::type() const
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{
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return datasource::Raster;
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}
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std::string raster_datasource::name()
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{
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return name_;
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}
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bool raster_datasource::parseEnvelope(const std::string& str,Envelope<double>& envelope)
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{
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return true;
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}
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const mapnik::Envelope<double>& raster_datasource::envelope() const
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{
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return extent_;
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}
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featureset_ptr raster_datasource::featuresAll(const CoordTransform& t) const
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{
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return featureset_ptr(0);
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}
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featureset_ptr raster_datasource::featuresInBox(const CoordTransform& t,
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const mapnik::Envelope<double>& box) const
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{
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RasterInfo info(filename_,format_,extent_);
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single_file_policy policy(info); //todo: handle different policies!
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return featureset_ptr(new RasterFeatureset<single_file_policy>(policy,box,t));
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}
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featureset_ptr raster_datasource::featuresAtPoint(const CoordTransform& t,
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const coord2d& pt) const
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{
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return featureset_ptr(0);
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}
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