69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/*****************************************************************************
|
|
*
|
|
* 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_DATASOURCE_HPP
|
|
#define MAPNIK_MEMORY_DATASOURCE_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/datasource.hpp>
|
|
#include <mapnik/feature_layer_desc.hpp>
|
|
|
|
// stl
|
|
#include <vector>
|
|
|
|
namespace mapnik {
|
|
|
|
class MAPNIK_DECL memory_datasource : public datasource
|
|
{
|
|
friend class memory_featureset;
|
|
public:
|
|
memory_datasource();
|
|
virtual ~memory_datasource();
|
|
void push(feature_ptr feature);
|
|
int type() const;
|
|
featureset_ptr features(const query& q) const;
|
|
featureset_ptr features_at_point(coord2d const& pt) const;
|
|
box2d<double> envelope() const;
|
|
layer_descriptor get_descriptor() const;
|
|
size_t size() const;
|
|
private:
|
|
std::vector<feature_ptr> features_;
|
|
mapnik::layer_descriptor desc_;
|
|
};
|
|
|
|
// This class implements a simple way of displaying point-based data
|
|
// TODO -- possible redesign, move into separate file
|
|
//
|
|
|
|
class MAPNIK_DECL point_datasource : public memory_datasource {
|
|
public:
|
|
point_datasource() :
|
|
feature_id_(1) {}
|
|
void add_point(double x, double y, const char* key, const char* value);
|
|
inline int type() const { return datasource::Vector; }
|
|
|
|
private:
|
|
int feature_id_;
|
|
};
|
|
}
|
|
|
|
#endif // MAPNIK_MEMORY_DATASOURCE_HPP
|