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add utility for converting paths to string geometry type name - refs #701
This commit is contained in:
Dane Springmeyer 2012-01-11 20:02:38 -08:00
parent 33bd76f24f
commit 967652efb6
1 changed files with 82 additions and 0 deletions
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include/mapnik/util/geometry_to_type_str.hpp Normal file
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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2012 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
*
*****************************************************************************/
//$Id$
#ifndef MAPNIK_GEOMETRY_DESCRIBE
#define MAPNIK_GEOMETRY_DESCRIBE
// mapnik
#include <mapnik/global.hpp>
#include <mapnik/geometry.hpp>
namespace mapnik { namespace util {
void to_type_str(mapnik::geometry_type const& g, std::string & geometry_string_type )
{
switch (g.type())
{
case mapnik::Point:
geometry_string_type = "point";
break;
case mapnik::LineString:
geometry_string_type = "linestring";
break;
case mapnik::Polygon:
geometry_string_type = "polygon";
break;
default:
break;
}
}
void to_type_str(mapnik::geometry_container const& paths, std::string & geometry_string_type )
{
if (paths.size() == 1)
{
// single geometry
to_type_str(paths.front(), geometry_string_type);
}
else if (paths.size() > 1)
{
int multi_type = 0;
geometry_container::const_iterator itr = paths.begin();
geometry_container::const_iterator end = paths.end();
for ( ; itr!=end; ++itr)
{
int type = static_cast<int>(itr->type());
if (multi_type > 0 && multi_type != itr->type())
{
geometry_string_type = "collection";
break;
}
to_type_str(*itr, geometry_string_type);
multi_type = type;
}
}
}
}}
#endif // MAPNIK_GEOMETRY_DESCRIBE