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#include "generator/borders_loader.hpp"
#include "generator/borders_generator.hpp"
#include "defines.hpp"
#include "platform/platform.hpp"
#include "storage/country_polygon.hpp"
#include "indexer/scales.hpp"
#include "coding/file_container.hpp"
#include "coding/file_name_utils.hpp"
#include "coding/read_write_utils.hpp"
#include "geometry/mercator.hpp"
#include "geometry/parametrized_segment.hpp"
#include "geometry/simplification.hpp"
#include "base/exception.hpp"
#include "base/logging.hpp"
#include "base/string_utils.hpp"
#include <cmath>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <vector>
using namespace std;
namespace borders
{
class PolygonLoader
{
CountryPolygons m_polygons;
m2::RectD m_rect;
CountriesContainer & m_countries;
public:
PolygonLoader(CountriesContainer & countries) : m_countries(countries) {}
void operator()(string const & name, vector<m2::RegionD> const & borders)
{
if (m_polygons.m_name.empty())
m_polygons.m_name = name;
for (m2::RegionD const & border : borders)
{
m2::RectD const rect(border.GetRect());
m_rect.Add(rect);
m_polygons.m_regions.Add(border, 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)
{
string const bordersDir = baseDir + BORDERS_DIR;
CHECK(Platform::IsFileExistsByFullPath(bordersDir),
("Cannot read borders directory", bordersDir));
Platform::FilesList files;
Platform::GetFilesByExt(bordersDir, BORDERS_EXTENSION, files);
for (string file : files)
{
vector<m2::RegionD> borders;
if (osm::LoadBorders(bordersDir + file, borders))
{
base::GetNameWithoutExt(file);
toDo(file, borders);
toDo.Finish();
}
}
}
bool LoadCountriesList(string const & baseDir, CountriesContainer & countries)
{
countries.Clear();
LOG(LINFO, ("Loading countries."));
PolygonLoader loader(countries);
ForEachCountry(baseDir, loader);
LOG(LINFO, ("Countries loaded:", countries.GetSize()));
return !countries.IsEmpty();
}
class PackedBordersGenerator
{
public:
explicit PackedBordersGenerator(string const & baseDir) : m_writer(baseDir + PACKED_POLYGONS_FILE)
{
}
void operator()(string const & name, vector<m2::RegionD> const & borders)
{
// use index in vector as tag
FileWriter w = m_writer.GetWriter(strings::to_string(m_polys.size()));
serial::GeometryCodingParams cp;
// calc rect
m2::RectD rect;
for (m2::RegionD const & border : borders)
rect.Add(border.GetRect());
// store polygon info
m_polys.push_back(storage::CountryDef(name, rect));
// write polygons as paths
WriteVarUint(w, borders.size());
for (m2::RegionD const & border : borders)
{
vector<m2::PointD> const & in = border.Data();
vector<m2::PointD> out;
/// @todo Choose scale level for simplification.
double const eps = pow(scales::GetEpsilonForSimplify(10), 2);
m2::SquaredDistanceFromSegmentToPoint<m2::PointD> distFn;
SimplifyNearOptimal(20, in.begin(), in.end(), eps, distFn,
AccumulateSkipSmallTrg<decltype(distFn), m2::PointD>(distFn, 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);
}
private:
FilesContainerW m_writer;
vector<storage::CountryDef> m_polys;
};
void GeneratePackedBorders(string const & baseDir)
{
PackedBordersGenerator generator(baseDir);
ForEachCountry(baseDir, generator);
generator.WritePolygonsInfo();
}
void UnpackBorders(string const & baseDir, string const & targetDir)
{
if (!Platform::IsFileExistsByFullPath(targetDir) && !Platform::MkDirChecked(targetDir))
MYTHROW(FileSystemException, ("Unable to find or create directory", targetDir));
vector<storage::CountryDef> countries;
FilesContainerR reader(base::JoinPath(baseDir, PACKED_POLYGONS_FILE));
ReaderSource<ModelReaderPtr> src(reader.GetReader(PACKED_POLYGONS_INFO_TAG));
rw::Read(src, countries);
for (size_t id = 0; id < countries.size(); id++)
{
ofstream poly(base::JoinPath(targetDir, countries[id].m_countryId + ".poly"));
poly << countries[id].m_countryId << endl;
src = reader.GetReader(strings::to_string(id));
uint32_t const count = ReadVarUint<uint32_t>(src);
for (size_t i = 0; i < count; ++i)
{
poly << i + 1 << endl;
vector<m2::PointD> points;
serial::LoadOuterPath(src, serial::GeometryCodingParams(), points);
for (auto p : points)
{
ms::LatLon const ll = MercatorBounds::ToLatLon(p);
poly << " " << scientific << ll.lon << " " << ll.lat << endl;
}
poly << "END" << endl;
}
poly << "END" << endl;
poly.close();
}
}
bool GetBordersRect(string const & baseDir, string const & country, m2::RectD & bordersRect)
{
string const bordersFile = base::JoinPath(baseDir, BORDERS_DIR, country + BORDERS_EXTENSION);
if (!Platform::IsFileExistsByFullPath(bordersFile))
{
LOG(LWARNING, ("File with borders does not exist:", bordersFile));
return false;
}
vector<m2::RegionD> borders;
CHECK(osm::LoadBorders(bordersFile, borders), ());
bordersRect.MakeEmpty();
for (auto const & border : borders)
bordersRect.Add(border.GetRect());
return true;
}
} // namespace borders
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