#pragma once

#ifndef MODIFIERASSISTANTS_INCLUDED

#define MODIFIERASSISTANTS_INCLUDED

// TnzTools includes

#include <tools assistant.h=""></tools>

#include <tools inputmanager.h=""></tools>

#undef DVAPI

#undef DVVAR

#ifdef TNZTOOLS_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//===================================================================

//*****************************************************************************************

//    TModifierAssistants definition

//*****************************************************************************************

class DVAPI TModifierAssistants: public TInputModifier {

public:

  typedef TSubTrackHandler Handler;

  class DVAPI Interpolator: public TTrackInterpolator {

  public:

    const double magnetism;

    TGuidelineList guidelines;

    inline Interpolator(TTrack &track, double magnetism):

      TTrackInterpolator(track),

      magnetism(magnetism > 0 ? (magnetism < 1 ? magnetism : 1) : 0)

      { }

    TTrackPoint interpolate(double index) override;

  };

private:

  bool scanAssistants(

    const TPointD *positions,

    int positionsCount,

    TGuidelineList *outGuidelines,

    bool draw,

    bool enabledOnly,

    bool drawGuidelines ) const;

public:

  double magnetism;

  double sensitiveLength;

  explicit TModifierAssistants(double magnetism = 1);

  void modifyTrack(

    const TTrack &track,

    TTrackList &outTracks ) override;

  TRectD calcDrawBounds(const TTrackList &tracks, const THoverList &hovers) override;

   void drawTrack(const TTrack &track) override;

   void draw(const TTrackList &tracks, const THoverList &hovers) override;

};

#endif