RedAuburn/organicmaps
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[tracks] Track::GetLengthMeters.

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vng 2013-10-29 16:46:47 +03:00 • committed by Alex Zolotarev
parent ed59cfa77b
commit 36824a459c
2 changed files with 23 additions and 1 deletions
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22
map/track.cpp
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@ -1,5 +1,7 @@
#include "track.hpp"
#include "../indexer/mercator.hpp"
#include "../graphics/screen.hpp"
#include "../graphics/pen.hpp"
#include "../graphics/depth_constants.hpp"
@ -7,6 +9,7 @@
#include "../geometry/distance.hpp"
#include "../geometry/simplification.hpp"
#include "../geometry/distance_on_sphere.hpp"
#include "../base/timer.hpp"
#include "../base/logging.hpp"
@ -80,6 +83,25 @@ void Track::CreateDisplayList(graphics::Screen * dlScreen, MatrixT const & matri
dlScreen->endFrame();
}
double Track::GetLengthMeters() const
{
double res = 0.0;
PolylineD::IterT i = m_polyline.Begin();
double lat1 = MercatorBounds::YToLat(i->y);
double lon1 = MercatorBounds::XToLon(i->x);
for (++i; i != m_polyline.End(); ++i)
{
double const lat2 = MercatorBounds::YToLat(i->y);
double const lon2 = MercatorBounds::XToLon(i->x);
res += ms::DistanceOnEarth(lat1, lon1, lat2, lon2);
lat1 = lat2;
lon1 = lon2;
}
return res;
}
double Track::GetShortestSquareDistance(m2::PointD const & point) const
{
double res = numeric_limits<double>::max();

2
map/track.hpp
View file

@ -68,7 +68,7 @@ public:
m2::RectD const & GetLimitRect() const { return m_rect; }
//@}
double GetLength() const { return m_polyline.GetLength(); }
double GetLengthMeters() const;
double GetShortestSquareDistance(m2::PointD const & point) const;
void Swap(Track & rhs);