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/// \file G4BlineEventAction.hh
/// \brief Definition of the G4BlineEventAction class

// --------------------------------------------------------------------
//
// G4BlineEventAction
//
// Class description:
//
// Defines the EventAction used during tracing of magnetic field
// lines. During the EndOfEventAction() it stores magneticfield lines
// as polyline and polymarker objects.
// These polyline and polymarker objects can be drawn by using the
// DrawFieldLines() method.

// --------------------------------------------------------------------
// Author: Laurent Desorgher (desorgher@phim.unibe.ch)
//         Created - 2003-10-06
// --------------------------------------------------------------------
#ifndef G4BlineEventAction_h
#define G4BlineEventAction_h 1

#include "G4Colour.hh"
#include "G4UserEventAction.hh"
#include "G4VisAttributes.hh"

class G4Event;
class G4Polyline;
class G4Polymarker;
class G4BlineTracer;

class G4BlineEventAction : public G4UserEventAction
{
  public:  // with description
    G4BlineEventAction(G4BlineTracer* aBlineTool);
    ~G4BlineEventAction() override;

    void BeginOfEventAction(const G4Event*) override;
    void EndOfEventAction(const G4Event*) override;

    void DrawFieldLines(G4double zoom, G4double theta, G4double phi);
    void ResetVectorObjectToBeDrawn();

  public:  // with description
    inline void SetDrawColour(G4Colour aColour) { fDrawColour = aColour; }
    inline void SetDrawBline(G4bool aBool) { fDrawBline = aBool; }
    inline void SetDrawPoints(G4bool aBool) { fDrawPoints = aBool; }
    inline void SetPointSize(G4double aVal) { fPointSize = aVal; }
    inline G4bool GetDrawBline() { return fDrawBline; }

  public:  // without description
           // inline void SetDrawLineWidth(G4double aVal)
           //   { fTrajectoryVisAttributes.SetLineWidth(aVal); }
           // inline void SetDrawLineStyle(G4VisAttributes::LineStyle aStyle)
           //   { fTrajectoryVisAttributes.SetLineStyle(aStyle); }
           // Future implementation...
  private:
    G4BlineTracer* fBlineTool = nullptr;
    G4Colour fDrawColour;
    G4bool fDrawBline = false;
    G4bool fDrawPoints = false;
    G4double fPointSize = 1;
    std::vector<G4VisAttributes*> fTrajectoryVisAttributes;
    std::vector<G4Polyline> fTrajectoryPolyline;
    std::vector<G4Polymarker> fTrajectoryPoints;
};

#endif