Repo created

libs/drape_frontend/gps_track_renderer.hpp

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+#pragma once
+
+#include "drape_frontend/circles_pack_shape.hpp"
+#include "drape_frontend/frame_values.hpp"
+#include "drape_frontend/gps_track_point.hpp"
+
+#include "shaders/program_manager.hpp"
+
+#include "drape/graphics_context.hpp"
+#include "drape/pointers.hpp"
+
+#include "geometry/screenbase.hpp"
+#include "geometry/spline.hpp"
+
+#include <functional>
+#include <map>
+#include <vector>
+
+namespace df
+{
+class GpsTrackRenderer final
+{
+public:
+  using TRenderDataRequestFn = std::function<void(uint32_t)>;
+  explicit GpsTrackRenderer(TRenderDataRequestFn const & dataRequestFn);
+
+  void AddRenderData(ref_ptr<dp::GraphicsContext> context, ref_ptr<gpu::ProgramManager> mng,
+                     drape_ptr<CirclesPackRenderData> && renderData);
+
+  void UpdatePoints(std::vector<GpsTrackPoint> const & toAdd, std::vector<uint32_t> const & toRemove);
+
+  void RenderTrack(ref_ptr<dp::GraphicsContext> context, ref_ptr<gpu::ProgramManager> mng, ScreenBase const & screen,
+                   int zoomLevel, FrameValues const & frameValues);
+
+  void Update();
+  void Clear();
+  void ClearRenderData();
+
+private:
+  size_t GetAvailablePointsCount() const;
+  dp::Color CalculatePointColor(size_t pointIndex, m2::PointD const & curPoint, double lengthFromStart,
+                                double fullLength) const;
+  dp::Color GetColorBySpeed(double speed) const;
+
+  TRenderDataRequestFn m_dataRequestFn;
+  std::vector<drape_ptr<CirclesPackRenderData>> m_renderData;
+  std::vector<GpsTrackPoint> m_points;
+  m2::Spline m_pointsSpline;
+  bool m_needUpdate;
+  bool m_waitForRenderData;
+  std::vector<std::pair<CirclesPackHandle *, size_t>> m_handlesCache;
+  float m_radius;
+  m2::PointD m_pivot;
+};
+}  // namespace df