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#include "map/track.hpp"
#include "map/bookmark_helpers.hpp"
#include "map/user_mark_id_storage.hpp"
#include "geometry/mercator.hpp"
#include <utility>
namespace
{
bool GetTrackPoint(std::vector<geometry::PointWithAltitude> const & points,
std::vector<double> const & lengths, double distanceInMeters, m2::PointD & pt)
{
CHECK_GREATER_OR_EQUAL(distanceInMeters, 0.0, ());
CHECK_EQUAL(points.size(), lengths.size(), ());
double const kEpsMeters = 1e-2;
if (base::AlmostEqualAbs(distanceInMeters, lengths.front(), kEpsMeters))
{
pt = points.front().GetPoint();
return true;
}
if (base::AlmostEqualAbs(distanceInMeters, lengths.back(), kEpsMeters))
{
pt = points.back().GetPoint();
return true;
}
auto const it = std::lower_bound(lengths.begin(), lengths.end(), distanceInMeters);
if (it == lengths.end())
return false;
auto const pointIndex = std::distance(lengths.begin(), it);
auto const length = *it;
auto const segmentLength = length - lengths[pointIndex - 1];
auto const k = (segmentLength - (length - distanceInMeters)) / segmentLength;
auto const & pt1 = points[pointIndex - 1].GetPoint();
auto const & pt2 = points[pointIndex].GetPoint();
pt = pt1 + (pt2 - pt1) * k;
return true;
}
double GetLengthInMeters(std::vector<geometry::PointWithAltitude> const & points, size_t pointIndex)
{
CHECK_LESS(pointIndex, points.size(), (pointIndex, points.size()));
double length = 0.0;
for (size_t i = 1; i <= pointIndex; ++i)
{
auto const & pt1 = points[i - 1].GetPoint();
auto const & pt2 = points[i].GetPoint();
auto const segmentLength = mercator::DistanceOnEarth(pt1, pt2);
length += segmentLength;
}
return length;
}
} // namespace
Track::Track(kml::TrackData && data, bool interactive)
: Base(data.m_id == kml::kInvalidTrackId ? UserMarkIdStorage::Instance().GetNextTrackId() : data.m_id)
, m_data(std::move(data))
{
m_data.m_id = GetId();
CHECK_GREATER(m_data.m_pointsWithAltitudes.size(), 1, ());
if (interactive && HasAltitudes())
CacheDataForInteraction();
}
void Track::CacheDataForInteraction()
{
m_interactionData = InteractionData();
m_interactionData->m_lengths = GetLengthsImpl();
m_interactionData->m_limitRect = GetLimitRectImpl();
}
std::vector<double> Track::GetLengthsImpl() const
{
std::vector<double> lengths(m_data.m_pointsWithAltitudes.size(), 0.0);
for (size_t i = 1; i < m_data.m_pointsWithAltitudes.size(); ++i)
{
auto const & pt1 = m_data.m_pointsWithAltitudes[i - 1].GetPoint();
auto const & pt2 = m_data.m_pointsWithAltitudes[i].GetPoint();
auto const segmentLength = mercator::DistanceOnEarth(pt1, pt2);
lengths[i] = lengths[i - 1] + segmentLength;
}
return lengths;
}
m2::RectD Track::GetLimitRectImpl() const
{
m2::RectD limitRect;
for (auto const & pt : m_data.m_pointsWithAltitudes)
limitRect.Add(pt.GetPoint());
return limitRect;
}
bool Track::HasAltitudes() const
{
bool hasNonDefaultAltitude = false;
for (auto const & pt : m_data.m_pointsWithAltitudes)
{
if (pt.GetAltitude() == geometry::kInvalidAltitude)
return false;
if (!hasNonDefaultAltitude && pt.GetAltitude() != geometry::kDefaultAltitudeMeters)
hasNonDefaultAltitude = true;
}
return hasNonDefaultAltitude;
}
std::string Track::GetName() const
{
return GetPreferredBookmarkStr(m_data.m_name);
}
m2::RectD Track::GetLimitRect() const
{
if (m_interactionData)
return m_interactionData->m_limitRect;
return GetLimitRectImpl();
}
double Track::GetLengthMeters() const
{
if (m_interactionData)
return m_interactionData->m_lengths.back();
return GetLengthInMeters(m_data.m_pointsWithAltitudes, m_data.m_pointsWithAltitudes.size() - 1);
}
double Track::GetLengthMeters(size_t pointIndex) const
{
if (m_interactionData)
{
CHECK_LESS(pointIndex, m_interactionData->m_lengths.size(), ());
return m_interactionData->m_lengths[pointIndex];
}
return GetLengthInMeters(m_data.m_pointsWithAltitudes, pointIndex);
}
bool Track::IsInteractive() const
{
return m_interactionData.has_value();
}
df::DepthLayer Track::GetDepthLayer() const
{
return df::DepthLayer::UserLineLayer;
}
size_t Track::GetLayerCount() const
{
return m_data.m_layers.size();
}
dp::Color Track::GetColor(size_t layerIndex) const
{
CHECK_LESS(layerIndex, m_data.m_layers.size(), ());
return dp::Color(m_data.m_layers[layerIndex].m_color.m_rgba);
}
float Track::GetWidth(size_t layerIndex) const
{
CHECK_LESS(layerIndex, m_data.m_layers.size(), ());
return static_cast<float>(m_data.m_layers[layerIndex].m_lineWidth);
}
float Track::GetDepth(size_t layerIndex) const
{
return layerIndex * 10;
}
std::vector<m2::PointD> Track::GetPoints() const
{
std::vector<m2::PointD> result;
result.reserve(m_data.m_pointsWithAltitudes.size());
for (auto const & pt : m_data.m_pointsWithAltitudes)
result.push_back(pt.GetPoint());
return result;
}
std::vector<geometry::PointWithAltitude> const & Track::GetPointsWithAltitudes() const
{
return m_data.m_pointsWithAltitudes;
}
void Track::Attach(kml::MarkGroupId groupId)
{
ASSERT_EQUAL(m_groupID, kml::kInvalidMarkGroupId, ());
m_groupID = groupId;
}
void Track::Detach()
{
m_groupID = kml::kInvalidMarkGroupId;
}
bool Track::GetPoint(double distanceInMeters, m2::PointD & pt) const
{
if (m_interactionData)
{
return GetTrackPoint(m_data.m_pointsWithAltitudes, m_interactionData->m_lengths,
distanceInMeters, pt);
}
auto const lengths = GetLengthsImpl();
return GetTrackPoint(m_data.m_pointsWithAltitudes, lengths, distanceInMeters, pt);
}
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