//*****************************************************************************
//  Copyright (c) 2004, Antivari Software Design
//*****************************************************************************
//
//  Naziv projekta     :
//  Podsistem          :
//  Datoteka           :
//  Prevodilac         :
//  Kopirano iz        :
//  Datoteku oformio   :
//
//*****************************************************************************
//  Opis:
//
//
//
//*****************************************************************************
//  Izmene:
//
//
//
//*****************************************************************************

#ifndef AreaH
#define AreaH

//----------------------------------------------------------------------------
// OS, VCL i Sistemska zaglavlja
//----------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ComCtrls.hpp>
#include <ExtCtrls.hpp>
#include <Graphics.hpp>

class TPovrsinaForm : public TForm
{
__published:	// IDE-managed Components
        TImage *Image;
        TPaintBox *PaintBox;
        TButton *SettingsButton;
        TBevel *Bevel;
        TButton *OkButton;
        TButton *CancelButton;
        TButton *HelpButton;
        TEdit *PiEdit;
        TStatusBar *StatusBar;
        TComboBox *ComboBox;
        void __fastcall FormActivate(TObject *Sender);
        void __fastcall PaintBoxMouseDown(TObject *Sender,
          TMouseButton Button, TShiftState Shift, int X, int Y);
        void __fastcall FormDestroy(TObject *Sender);
        void __fastcall PaintBoxPaint(TObject *Sender);
        void __fastcall PaintBoxMouseMove(TObject *Sender,
          TShiftState Shift, int X, int Y);
        void __fastcall SettingsButtonClick(TObject *Sender);
        void __fastcall FormKeyPress(TObject *Sender, char &Key);
        void __fastcall FormClose(TObject *Sender, TCloseAction &Action);
        void __fastcall CancelButtonClick(TObject *Sender);
        void __fastcall OkButtonClick(TObject *Sender);
        void __fastcall ComboBoxChange(TObject *Sender);
private:	// User declarations


        // Povrsina ***********************************************************
        struct point
        {
           float x,y;
           point *p;
        };

        float calc_polygon( point *, point * );
        float calc_triangle( point *, point *, point * );

        void destroy_pointlist( point * cur );

        inline float calc_determinant( float px, float py, float qx, float qy )
        {
           return( px*qy - qx*py );
        }
        // ********************************************************************



        bool Finished;
        int Result;
        int Count();
        bool CanAdd( int, int );
        int LastX, LastY;

        bool CanAddLine( int, int );

        int    GetX( int );
        int    GetY( int );

        TStringList *XPos;
        TStringList *YPos;

        TColor GuideLine;
        TColor AreaLine;
        int Precision;
        int Method;

        int LastMethod;

        double CalculateArea();
        double CalculateLine();

        void GetProperties();
        
        void GoPaint();
        bool GoClose();
        void GoSaveResults();

        void GoSetSubsystemResources();


        int SegmentIntersection( double*, double*, double*, double* );


public:		// User declarations
        __fastcall TPovrsinaForm(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TPovrsinaForm *PovrsinaForm;
//---------------------------------------------------------------------------
#endif