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#pragma once
#include "borders_loader.hpp"
#include "feature_builder.hpp"
#include "../indexer/feature_visibility.hpp"
#include "../indexer/cell_id.hpp"
#include "../geometry/rect2d.hpp"
#include "../coding/file_writer.hpp"
#include "../base/base.hpp"
#include "../base/buffer_vector.hpp"
#include "../base/macros.hpp"
#include "../std/scoped_ptr.hpp"
#include "../std/string.hpp"
#ifndef PARALLEL_POLYGONIZER
#define PARALLEL_POLYGONIZER 1
#endif
#if PARALLEL_POLYGONIZER
#include <QSemaphore>
#include <QThreadPool>
#include <QMutex>
#include <QMutexLocker>
#endif
namespace feature
{
// Groups features according to country polygons
template <class FeatureOutT>
class Polygonizer
{
string m_prefix;
string m_suffix;
vector<FeatureOutT*> m_Buckets;
vector<string> m_Names;
borders::CountriesContainerT m_countries;
#if PARALLEL_POLYGONIZER
QThreadPool m_ThreadPool;
QSemaphore m_ThreadPoolSemaphore;
QMutex m_EmitFeatureMutex;
#endif
public:
template <class TInfo>
explicit Polygonizer(TInfo const & info)
: m_prefix(info.m_datFilePrefix), m_suffix(info.m_datFileSuffix)
#if PARALLEL_POLYGONIZER
, m_ThreadPoolSemaphore(m_ThreadPool.maxThreadCount() * 8)
#endif
{
#if PARALLEL_POLYGONIZER
LOG(LINFO, ("Polygonizer thread pool threads:", m_ThreadPool.maxThreadCount()));
#endif
if (info.m_splitByPolygons)
{
CHECK(borders::LoadCountriesList(info.m_datFilePrefix, m_countries),
("Error loading country polygons files"));
}
else
{
// Insert fake country polygon equal to whole world to
// create only one output file which contains all features
m_countries.Add(borders::CountryPolygons(), MercatorBounds::FullRect());
}
}
~Polygonizer()
{
Finish();
for_each(m_Buckets.begin(), m_Buckets.end(), DeleteFunctor());
}
struct PointChecker
{
borders::RegionsContainerT const & m_regions;
bool m_belongs;
PointChecker(borders::RegionsContainerT const & regions)
: m_regions(regions), m_belongs(false) {}
bool operator()(m2::PointD const & pt)
{
m_regions.ForEachInRect(m2::RectD(pt, pt), bind<void>(ref(*this), _1, cref(pt)));
return !m_belongs;
}
void operator() (borders::Region const & rgn, borders::Region::ValueT const & point)
{
if (!m_belongs)
m_belongs = rgn.Contains(point);
}
};
class InsertCountriesPtr
{
typedef buffer_vector<borders::CountryPolygons const *, 32> vec_type;
vec_type & m_vec;
public:
InsertCountriesPtr(vec_type & vec) : m_vec(vec) {}
void operator() (borders::CountryPolygons const & c)
{
m_vec.push_back(&c);
}
};
void operator () (FeatureBuilder1 const & fb)
{
buffer_vector<borders::CountryPolygons const *, 32> vec;
m_countries.ForEachInRect(fb.GetLimitRect(), InsertCountriesPtr(vec));
switch (vec.size())
{
case 0:
break;
case 1:
EmitFeature(vec[0], fb);
break;
default:
{
#if PARALLEL_POLYGONIZER
m_ThreadPoolSemaphore.acquire();
m_ThreadPool.start(new PolygonizerTask(this, vec, fb));
#else
PolygonizerTask task(this, vec, fb);
task.RunBase();
#endif
}
}
}
void Finish()
{
#if PARALLEL_POLYGONIZER
m_ThreadPool.waitForDone();
#endif
}
void EmitFeature(borders::CountryPolygons const * country, FeatureBuilder1 const & fb)
{
#if PARALLEL_POLYGONIZER
QMutexLocker mutexLocker(&m_EmitFeatureMutex);
UNUSED_VALUE(mutexLocker);
#endif
if (country->m_index == -1)
{
m_Names.push_back(country->m_name);
m_Buckets.push_back(new FeatureOutT(m_prefix + country->m_name + m_suffix));
country->m_index = m_Buckets.size()-1;
}
(*(m_Buckets[country->m_index]))(fb);
}
vector<string> const & Names() const
{
return m_Names;
}
private:
friend class PolygonizerTask;
class PolygonizerTask
#if PARALLEL_POLYGONIZER
: public QRunnable
#endif
{
public:
PolygonizerTask(Polygonizer * pPolygonizer,
buffer_vector<borders::CountryPolygons const *, 32> const & countries,
FeatureBuilder1 const & fb)
: m_pPolygonizer(pPolygonizer), m_Countries(countries), m_FB(fb) {}
void RunBase()
{
for (size_t i = 0; i < m_Countries.size(); ++i)
{
PointChecker doCheck(m_Countries[i]->m_regions);
m_FB.ForEachGeometryPoint(doCheck);
if (doCheck.m_belongs)
m_pPolygonizer->EmitFeature(m_Countries[i], m_FB);
}
}
#if PARALLEL_POLYGONIZER
void run()
{
RunBase();
m_pPolygonizer->m_ThreadPoolSemaphore.release();
}
#endif
private:
Polygonizer * m_pPolygonizer;
buffer_vector<borders::CountryPolygons const *, 32> m_Countries;
FeatureBuilder1 m_FB;
};
};
}
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