91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2006 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
|
|
*
|
|
*****************************************************************************/
|
|
//$Id: raster_datasource.cc 44 2005-04-22 18:53:54Z pavlenko $
|
|
|
|
#include "raster_datasource.hpp"
|
|
#include "image_reader.hpp"
|
|
#include "raster_featureset.hpp"
|
|
#include "raster_info.hpp"
|
|
#include <boost/lexical_cast.hpp>
|
|
|
|
DATASOURCE_PLUGIN(raster_datasource)
|
|
|
|
using std::clog;
|
|
using std::endl;
|
|
using boost::lexical_cast;
|
|
using boost::bad_lexical_cast;
|
|
|
|
raster_datasource::raster_datasource(const parameters& params)
|
|
: datasource (params),
|
|
desc_(params.get("name"))
|
|
{
|
|
filename_=params.get("file");
|
|
format_=params.get("format");
|
|
|
|
try
|
|
{
|
|
double lox=lexical_cast<double>(params.get("lox"));
|
|
double loy=lexical_cast<double>(params.get("loy"));
|
|
double hix=lexical_cast<double>(params.get("hix"));
|
|
double hiy=lexical_cast<double>(params.get("hiy"));
|
|
extent_.init(lox,loy,hix,hiy);
|
|
}
|
|
catch (bad_lexical_cast& ex)
|
|
{
|
|
clog << ex.what() << endl;
|
|
}
|
|
}
|
|
|
|
|
|
raster_datasource::~raster_datasource()
|
|
{
|
|
}
|
|
|
|
int raster_datasource::type() const
|
|
{
|
|
return datasource::Raster;
|
|
}
|
|
|
|
std::string raster_datasource::name_="raster";
|
|
std::string raster_datasource::name()
|
|
{
|
|
return name_;
|
|
}
|
|
|
|
const mapnik::Envelope<double>& raster_datasource::envelope() const
|
|
{
|
|
return extent_;
|
|
}
|
|
|
|
layer_descriptor const& raster_datasource::get_descriptor() const
|
|
{
|
|
return desc_;
|
|
}
|
|
|
|
featureset_ptr raster_datasource::features(query const& q) const
|
|
{
|
|
raster_info info(filename_,format_,extent_);
|
|
single_file_policy policy(info); //todo: handle different policies!
|
|
return featureset_ptr(new raster_featureset<single_file_policy>(policy,q));
|
|
}
|
|
|
|
|