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#include "borders_loader.hpp"
#include "borders_generator.hpp"
#include "../defines.hpp"
#include "../storage/country_polygon.hpp"
#include "../indexer/geometry_serialization.hpp"
#include "../indexer/scales.hpp"
#include "../geometry/simplification.hpp"
#include "../geometry/distance.hpp"
#include "../coding/file_container.hpp"
#include "../coding/read_write_utils.hpp"
#include "../base/logging.hpp"
#include "../base/string_utils.hpp"
#include "../std/fstream.hpp"
#include "../std/vector.hpp"
#include "../std/bind.hpp"
#define BORDERS_DIR "borders/"
#define BORDERS_EXTENSION ".borders"
#define POLYGONS_FILE "polygons.lst"
namespace borders
{
class PolygonLoader
{
CountryPolygons m_polygons;
m2::RectD m_rect;
string const & m_baseDir;
CountriesContainerT & m_countries;
public:
PolygonLoader(string const & baseDir, CountriesContainerT & countries)
: m_baseDir(baseDir), m_countries(countries) {}
void operator() (string const & name)
{
if (m_polygons.m_name.empty())
m_polygons.m_name = name;
vector<m2::RegionD> borders;
if (osm::LoadBorders(m_baseDir + BORDERS_DIR + name + BORDERS_EXTENSION, borders))
{
for (size_t i = 0; i < borders.size(); ++i)
{
m2::RectD const rect(borders[i].GetRect());
m_rect.Add(rect);
m_polygons.m_regions.Add(borders[i], rect);
}
}
}
void Finish()
{
if (!m_polygons.IsEmpty())
{
ASSERT_NOT_EQUAL ( m_rect, m2::RectD::GetEmptyRect(), () );
m_countries.Add(m_polygons, m_rect);
}
m_polygons.Clear();
m_rect.MakeEmpty();
}
};
template <class ToDo>
void ForEachCountry(string const & baseDir, ToDo & toDo)
{
ifstream stream((baseDir + POLYGONS_FILE).c_str());
string line;
while (stream.good())
{
std::getline(stream, line);
if (line.empty())
continue;
// in polygons file every country is a separate string
toDo(line);
toDo.Finish();
}
}
bool LoadCountriesList(string const & baseDir, CountriesContainerT & countries)
{
countries.Clear();
LOG(LINFO, ("Loading countries."));
PolygonLoader loader(baseDir, countries);
ForEachCountry(baseDir, loader);
LOG(LINFO, ("Countries loaded:", countries.GetSize()));
return !countries.IsEmpty();
}
class PackedBordersGenerator
{
FilesContainerW m_writer;
string const & m_baseDir;
vector<storage::CountryDef> m_polys;
public:
PackedBordersGenerator(string const & baseDir)
: m_writer(baseDir + PACKED_POLYGONS_FILE), m_baseDir(baseDir)
{
}
void operator() (string const & name)
{
vector<m2::RegionD> borders;
if (osm::LoadBorders(m_baseDir + BORDERS_DIR + name + BORDERS_EXTENSION, borders))
{
// use index in vector as tag
FileWriter w = m_writer.GetWriter(strings::to_string(m_polys.size()));
serial::CodingParams cp;
uint32_t const count = static_cast<uint32_t>(borders.size());
// calc rect
m2::RectD rect;
for (uint32_t i = 0; i < count; ++i)
rect.Add(borders[i].GetRect());
// store polygon info
m_polys.push_back(storage::CountryDef(name, rect));
// write polygons as paths
WriteVarUint(w, count);
for (uint32_t i = 0; i < count; ++i)
{
typedef vector<m2::PointD> VectorT;
typedef mn::DistanceToLineSquare<m2::PointD> DistanceT;
VectorT const & in = borders[i].Data();
VectorT out;
/// @todo Choose scale level for simplification.
double const eps = my::sq(scales::GetEpsilonForSimplify(10));
DistanceT dist;
SimplifyNearOptimal(20, in.begin(), in.end(), eps, dist,
AccumulateSkipSmallTrg<DistanceT, m2::PointD>(dist, out, eps));
serial::SaveOuterPath(out, cp, w);
}
}
}
void Finish() {}
void WritePolygonsInfo()
{
FileWriter w = m_writer.GetWriter(PACKED_POLYGONS_INFO_TAG);
rw::Write(w, m_polys);
}
};
void GeneratePackedBorders(string const & baseDir)
{
PackedBordersGenerator generator(baseDir);
ForEachCountry(baseDir, generator);
generator.WritePolygonsInfo();
}
}
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