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#include "feature_utils.hpp"
#include "feature_visibility.hpp"
#include "classificator.hpp"
#include "feature.hpp"
#include "scales.hpp"
#include "../geometry/point2d.hpp"
#include "../base/base.hpp"
#include "../std/vector.hpp"
namespace feature
{
namespace impl
{
class FeatureEstimator
{
template <size_t N>
static bool IsEqual(uint32_t t, uint32_t const (&arr)[N])
{
for (size_t i = 0; i < N; ++i)
if (arr[i] == t)
return true;
return false;
}
public:
FeatureEstimator()
{
m_TypeContinent = GetType("place", "continent");
m_TypeCountry = GetType("place", "country");
m_TypeState = GetType("place", "state");
m_TypeCounty[0] = GetType("place", "region");
m_TypeCounty[1] = GetType("place", "county");
m_TypeCity = GetType("place", "city");
m_TypeCityCapital = GetType("place", "city", "capital");
m_TypeTown = GetType("place", "town");
m_TypeVillage[0] = GetType("place", "village");
m_TypeVillage[1] = GetType("place", "suburb");
m_TypeSmallVillage[0] = GetType("place", "hamlet");
m_TypeSmallVillage[1] = GetType("place", "locality");
m_TypeSmallVillage[2] = GetType("place", "farm");
}
void CorrectRectForScales(FeatureType const & f, m2::PointD const & center,
bool forceCorrect, m2::RectD & rect) const
{
pair<int, int> const scaleR = feature::DrawableScaleRangeForText(f);
int const scale = scales::GetScaleLevel(rect);
if (forceCorrect || (scale < scaleR.first || scale > scaleR.second))
{
rect = scales::GetRectForLevel(scaleR.first, center, 1.0);
}
}
m2::RectD GetViewport(FeatureType const & f) const
{
m2::RectD limitR = f.GetLimitRect(-2);
if (f.GetFeatureType() != feature::GEOM_POINT)
{
CorrectRectForScales(f, limitR.Center(), false, limitR);
return limitR;
}
FeatureBase::GetTypesFn types;
f.ForEachTypeRef(types);
m2::PointD maxSzM(0, 0);
for (size_t i = 0; i < types.m_size; ++i)
{
m2::PointD const szM = GetSizeForType(types.m_types[i], f);
maxSzM.x = max(maxSzM.x, szM.x);
maxSzM.y = max(maxSzM.y, szM.y);
}
m2::PointD const centerXY = limitR.Center();
m2::RectD res = MercatorBounds::RectByCenterXYAndSizeInMeters(
centerXY.x, centerXY.y, maxSzM.x, maxSzM.y);
CorrectRectForScales(f, centerXY, maxSzM == m2::PointD(0, 0), res);
return res;
}
uint8_t GetSearchRank(FeatureType const & feature) const
{
uint32_t population = feature.GetPopulation();
FeatureBase::GetTypesFn types;
feature.ForEachTypeRef(types);
for (size_t i = 0; i < types.m_size; ++i)
{
if (IsEqual(types.m_types[i], m_TypeSmallVillage))
population = max(population, static_cast<uint32_t>(100));
else if (IsEqual(types.m_types[i], m_TypeVillage))
population = max(population, static_cast<uint32_t>(1000));
else if (types.m_types[i] == m_TypeTown || IsEqual(types.m_types[i], m_TypeCounty))
population = max(population, static_cast<uint32_t>(10000));
else if (types.m_types[i] == m_TypeCity || types.m_types[i] == m_TypeState)
population = max(population, static_cast<uint32_t>(100000));
else if (types.m_types[i] == m_TypeCityCapital)
population = max(population, static_cast<uint32_t>(1000000));
else if (types.m_types[i] == m_TypeCountry)
population = max(population, static_cast<uint32_t>(2000000));
else if (types.m_types[i] == m_TypeContinent)
population = max(population, static_cast<uint32_t>(20000000));
}
return static_cast<uint8_t>(log(double(population)) / log(1.1));
}
private:
// Returns width and height (lon and lat) for a given type.
m2::PointD GetSizeForType(uint32_t const type, FeatureType const & feature) const
{
static double const km = 1000.0;
if (type == m_TypeContinent)
return m2::PointD(5000*km, 5000*km);
/// @todo Load countries bounding rects.
if (type == m_TypeCountry)
return m2::PointD(500*km, 500*km);
if (type == m_TypeState)
return m2::PointD(200*km, 200*km);
if (IsEqual(type, m_TypeCounty))
return m2::PointD(40*km, 40*km);
if (type == m_TypeCity || type == m_TypeCityCapital)
{
double const radius = sqrt(static_cast<double>(feature.GetPopulation() / 2500));
return m2::PointD(radius*km, radius*km);
}
if (type == m_TypeTown)
return m2::PointD(6*km, 6*km);
if (IsEqual(type, m_TypeVillage))
return m2::PointD(1.5*km, 1.5*km);
return m2::PointD(0, 0);
}
static uint32_t GetType(string const & s1,
string const & s2 = string(),
string const & s3 = string())
{
vector<string> path;
path.push_back(s1);
if (!s2.empty()) path.push_back(s2);
if (!s3.empty()) path.push_back(s3);
return classif().GetTypeByPath(path);
}
uint32_t m_TypeContinent;
uint32_t m_TypeCountry;
uint32_t m_TypeState;
uint32_t m_TypeCounty[2];
uint32_t m_TypeCity;
uint32_t m_TypeCityCapital;
uint32_t m_TypeTown;
uint32_t m_TypeVillage[2];
uint32_t m_TypeSmallVillage[3];
};
FeatureEstimator const & GetFeatureEstimator()
{
static FeatureEstimator const featureEstimator;
return featureEstimator;
}
} // namespace feature::impl
m2::RectD GetFeatureViewport(FeatureType const & feature)
{
return impl::GetFeatureEstimator().GetViewport(feature);
}
uint8_t GetSearchRank(FeatureType const & feature)
{
return impl::GetFeatureEstimator().GetSearchRank(feature);
}
} // namespace feature
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