New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/map/elevation_info.cpp

@@ -0,0 +1,63 @@
+#include "map/elevation_info.hpp"
+
+#include "base/logging.hpp"
+
+#include "geometry/mercator.hpp"
+
+using namespace geometry;
+using namespace mercator;
+
+ElevationInfo::ElevationInfo(std::vector<GeometryLine> const & lines)
+{
+  // Concatenate all segments.
+  for (size_t lineIndex = 0; lineIndex < lines.size(); ++lineIndex)
+  {
+    auto const & line = lines[lineIndex];
+    if (line.empty())
+      continue;
+
+    if (lineIndex > 0)
+      m_segmentsDistances.emplace_back(m_points.back().m_distance);
+
+    AddPoints(line, true /* new segment */);
+  }
+  /// @todo(KK) Implement difficulty calculation.
+  m_difficulty = Difficulty::Unknown;
+}
+
+void ElevationInfo::AddGpsPoints(GpsPoints const & points)
+{
+  GeometryLine line;
+  line.reserve(points.size());
+  for (auto const & point : points)
+    line.emplace_back(FromLatLon(point.m_latitude, point.m_longitude), point.m_altitude);
+  AddPoints(line);
+}
+
+void ElevationInfo::AddPoints(GeometryLine const & line, bool isNewSegment)
+{
+  if (line.empty())
+    return;
+
+  double distance = m_points.empty() ? 0 : m_points.back().m_distance;
+  for (size_t pointIndex = 0; pointIndex < line.size(); ++pointIndex)
+  {
+    auto const & point = line[pointIndex];
+
+    if (m_points.empty())
+    {
+      m_points.emplace_back(point, distance);
+      continue;
+    }
+
+    if (isNewSegment && pointIndex == 0)
+    {
+      m_points.emplace_back(point, distance);
+      continue;
+    }
+
+    auto const & previousPoint = m_points.back().m_point;
+    distance += mercator::DistanceOnEarth(previousPoint.GetPoint(), point.GetPoint());
+    m_points.emplace_back(point, distance);
+  }
+}