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#include "indexer/data_source_helpers.hpp"
#include "indexer/data_source.hpp"
#include "indexer/feature_algo.hpp"
#include "indexer/scales.hpp"
namespace indexer
{
void ForEachFeatureAtPoint(DataSource const & dataSource, function<void(FeatureType &)> && fn,
m2::PointD const & mercator, double toleranceInMeters)
{
double constexpr kSelectRectWidthInMeters = 1.1;
double constexpr kMetersToLinearFeature = 3;
int constexpr kScale = scales::GetUpperScale();
m2::RectD const rect =
MercatorBounds::RectByCenterXYAndSizeInMeters(mercator, kSelectRectWidthInMeters);
auto const emitter = [&fn, &rect, &mercator, toleranceInMeters](FeatureType & ft) {
switch (ft.GetFeatureType())
{
case feature::GEOM_POINT:
if (rect.IsPointInside(ft.GetCenter()))
fn(ft);
break;
case feature::GEOM_LINE:
if (feature::GetMinDistanceMeters(ft, mercator) < kMetersToLinearFeature)
fn(ft);
break;
case feature::GEOM_AREA:
{
auto limitRect = ft.GetLimitRect(kScale);
// Be a little more tolerant. When used by editor mercator is given
// with some error, so we must extend limit rect a bit.
limitRect.Inflate(MercatorBounds::GetCellID2PointAbsEpsilon(),
MercatorBounds::GetCellID2PointAbsEpsilon());
if (limitRect.IsPointInside(mercator) &&
feature::GetMinDistanceMeters(ft, mercator) <= toleranceInMeters)
{
fn(ft);
}
}
break;
case feature::GEOM_UNDEFINED: ASSERT(false, ("case feature::GEOM_UNDEFINED")); break;
}
};
dataSource.ForEachInRect(emitter, rect, kScale);
}
} // namespace indexer
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