#pragma once
 
#ifndef ASSISTANTLINE_INCLUDED
#define ASSISTANTLINE_INCLUDED
 
 
// TnzTools includes
#include <tools/assistant.h>
#include <tools/assistants/guidelineline.h>
 
 
// TnzCore includes
#include <tgl.h>
 
 
//*****************************************************************************************
//    TAssistantLine definition
//*****************************************************************************************
 
class TAssistantLine final : public TAssistant {
  Q_DECLARE_TR_FUNCTIONS(TAssistantVanishingPoint)
public:
  const TStringId m_idRestricktA;
  const TStringId m_idRestricktB;
  const TStringId m_idParallel;
  const TStringId m_idGrid;
  const TStringId m_idPerspective;
 
protected:
  TAssistantPoint &m_a;
  TAssistantPoint &m_b;
  TAssistantPoint &m_grid0;
  TAssistantPoint &m_grid1;
 
public:
  TAssistantLine(TMetaObject &object);
 
  static QString getLocalName();
 
  void updateTranslation() const override;
 
  inline bool getRestrictA() const
    { return data()[m_idRestricktA].getBool(); }
  inline bool getRestrictB() const
    { return data()[m_idRestricktB].getBool(); }
  inline bool getParallel() const
    { return data()[m_idParallel].getBool(); }
  inline bool getGrid() const
    { return data()[m_idGrid].getBool(); }
  inline bool getPerspective() const
    { return data()[m_idPerspective].getBool(); }
 
  void onDataChanged(const TVariant &value) override;
 
private:
  void fixGrid(const TPointD &prevA, const TPointD &prevB);
 
public:
  void onMovePoint(TAssistantPoint &point, const TPointD &position) override;
 
  void getGuidelines(
    const TPointD &position,
    const TAffine &toTool,
    const TPixelD &color,
    TGuidelineList &outGuidelines ) const override;
 
  static void drawRuler(
    const TPointD &a,
    const TPointD &b,
    const TPointD &grid0,
    const TPointD &grid1,
    const TPointD *perspectiveBase,
    double alpha );
 
  static void drawLine(
    const TAffine &matrix,
    const TAffine &matrixInv,
    double pixelSize,
    const TPointD &a,
    const TPointD &b,
    bool restrictA,
    bool restrictB,
    double alpha );
 
  static void drawGrid(
    const TPointD &a,
    const TPointD &b,
    const TPointD &grid0,
    const TPointD &grid1,
    bool restrictA,
    bool restrictB,
    bool perspective,
    double alpha );
 
  void draw(TToolViewer *viewer, bool enabled) const override;
};
 
 
#endif