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Framework::GetFeatureAtMercatorPoint().

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This commit is contained in:
Alex Zolotarev 2016-01-04 17:18:15 +03:00 • committed by Sergey Yershov
parent 6be425966d
commit e2b6eb487d
2 changed files with 50 additions and 0 deletions
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46
map/framework.cpp
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@ -1629,6 +1629,52 @@ bool Framework::ShowMapForURL(string const & url)
return false;
}
unique_ptr<FeatureType> Framework::GetFeatureAtMercatorPoint(m2::PointD const & mercator) const
{
constexpr double const kRectWidthInMeters = 1.1;
int const kScale = scales::GetUpperScale();
m2::RectD const rect = MercatorBounds::RectByCenterXYAndSizeInMeters(mercator, kRectWidthInMeters);
unique_ptr<FeatureType> pointFt, areaFt;
double minPointDistance = kRectWidthInMeters;
auto const & isBuilding = ftypes::IsBuildingChecker::Instance();
m_model.ForEachFeature(rect, [&](FeatureType const & ft)
{
switch (ft.GetFeatureType())
{
case feature::GEOM_POINT:
{
double const distance = MercatorBounds::DistanceOnEarth(ft.GetCenter(), mercator);
if (distance < minPointDistance)
{
pointFt.reset(new FeatureType(ft));
pointFt->ParseMetadata();
minPointDistance = distance;
}
break;
}
case feature::GEOM_AREA:
{
// Quick rough check.
if (!ft.GetLimitRect(kScale).IsPointInside(mercator))
return;
// Distance is 0.0 if point is inside area feature.
if (0.0 != feature::GetMinDistanceMeters(ft, mercator))
return;
// Buildings have higher priority over other types.
if (areaFt && isBuilding(*areaFt))
return;
areaFt.reset(new FeatureType(ft));
areaFt->ParseMetadata();
break;
}
// TODO(AlexZ): At the moment, ignore linear features.
default: return;
}
}, kScale);
return pointFt ? move(pointFt) : move(areaFt);
}
bool Framework::GetVisiblePOI(m2::PointD const & glbPoint, search::AddressInfo & info, feature::Metadata & metadata) const
{
ASSERT(m_drapeEngine != nullptr, ());

4
map/framework.hpp
View file

@ -485,6 +485,10 @@ private:
void GetLocality(m2::PointD const & pt, search::AddressInfo & info) const;
public:
/// Get feature at given point even if it's invisible on the screen.
/// TODO(AlexZ): Refactor out other similar methods.
/// @returns nullptr if no feature was found at the given mercator point.
unique_ptr<FeatureType> GetFeatureAtMercatorPoint(m2::PointD const & mercator) const;
bool GetVisiblePOI(m2::PointD const & glbPoint, search::AddressInfo & info, feature::Metadata & metadata) const;
// TODO(AlexZ): Refactor similar getters to share common interface.
bool GetVisiblePOI(m2::PointD const & ptMercator, FeatureType & outPOI) const;