#pragma once
#define _USE_MATH_DEFINES
#include <math.h>

namespace KrzyweLissajous
{
   ...
   ...
   ...
#pragma endregion

  double Ax,Ay,Wx,Wy,F;
  static double Xp=-1.1, Xk=1.1, Yp=-1.1, Yk=1.1;
  int ex( double x) { return int((x-Xp)/(Xk-Xp)*pictureBox1->Width);  }
  int ey( double y) { return int((Yk-y)/(Yk-Yp)*pictureBox1->Height); }
  double rzx( double x) { return Xp+(Xk-Xp)*x/pictureBox1->Width;  }
  double rzy( double y) { return Yk-(Yk-Yp)*y/pictureBox1->Height; }
  // -------------------------------------------------------------------------
  private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e)
  {
    Ax=1.0;
    Ay=1.0;
    Wx=1.0;
    Wy=3.0;
    F=0.0;
    panel2->BackColor=Color::Blue;
  }
  // -------------------------------------------------------------------------
  private: System::Void hScrollBar_Scroll(System::Object^  sender, System::Windows::Forms::ScrollEventArgs^  e)
  {
    Ax=0.01*hScrollBarAx->Value;
    Ay=0.01*hScrollBarAy->Value;
    Wx=0.1*hScrollBarWx->Value;
    Wy=0.1*hScrollBarWy->Value;
    F=hScrollBarF->Value*M_PI/180.0;

    labelAx->Text=L"Ax = "+Ax.ToString("F2");
    labelAy->Text=L"Ay = "+Ay.ToString("F2");
    labelWx->Text=L"Wx = "+Wx.ToString("F1");
    labelWy->Text=L"Wy = "+Wy.ToString("F1");
    labelF->Text=L"fi = "+(F*180/M_PI).ToString("F0");
    pictureBox1->Invalidate();
  }
  // -------------------------------------------------------------------------
private: System::Void pictureBox1_Paint(System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e)
{
    Graphics^ grafika = e->Graphics;
    grafika->Clear( Color::White); //colorDialog2->Color);

    Pen^ pioro=gcnew Pen(System::Drawing::Color::Black);
    pioro->EndCap=Drawing2D::LineCap::ArrowAnchor;
    grafika->DrawLine(pioro, ex(Xp),ey(0.0),ex(Xk),ey(0.0));
    grafika->DrawLine(pioro, ex(0.0),ey(Yp),ex(0.0),ey(Yk));
    pioro->EndCap=Drawing2D::LineCap::NoAnchor;
    pioro->Color=panel2->BackColor;
    pioro->Width=int(numericUpDown1->Value);
    //pioro->Width=2;

    double xp,yp,xk=Ax*sin(0.0),yk=Ay*cos(0.0+F),dt=0.05;
    for(double t=0; t<10; t+=dt)
    {
      xp=xk;
      yp=yk;
      xk=Ax*sin(Wx*(t+dt));
      yk=Ay*cos(Wy*(t+dt)+F);
      grafika->DrawLine(pioro, ex(xp),ey(yp), ex(xk),ey(yk));
    }
  }
  // -------------------------------------------------------------------------
  private: System::Void pictureBox1_Resize(System::Object^  sender, System::EventArgs^  e)
  {
    pictureBox1->Invalidate();
  }
  // -------------------------------------------------------------------------
 private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e)
  {
  }
  // -------------------------------------------------------------------------
  private: System::Void pictureBox1_MouseMove(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e)
  {
    int xe=e->X,ye=e->Y;
    double xr=rzx( xe),yr=rzy( ye);
    tLabelEkr->Text=L"(x,y)ekr = ("+xe.ToString()+L"; "+ye.ToString()+L")";
    tLabelRzecz->Text=L"(x,y)rzecz = ("+xr.ToString("F2")+L"; "+yr.ToString("F2")+L")";
  }
  // -------------------------------------------------------------------------
  private: System::Void checkBox1_CheckedChanged(System::Object^  sender, System::EventArgs^  e)
  {
    timer1->Enabled=checkBox1->Checked;
  }
  // -------------------------------------------------------------------------
  private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e)
  {
    //static int a=0;	  a++;
    //label1->Text=L"a = "+a.ToString();
    hScrollBarF->Value=(hScrollBarF->Value+3)%hScrollBarF->Maximum;
    F=hScrollBarF->Value*M_PI/180.0;
    labelF->Text=L"fi = "+(F*180/M_PI).ToString("F0");
    pictureBox1->Invalidate();
  }
  // -------------------------------------------------------------------------
  private: System::Void panel2_Click(System::Object^  sender, System::EventArgs^  e)
  {
    if(colorDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
      panel2->BackColor = colorDialog1->Color;
    pictureBox1->Invalidate();
  }
  // -------------------------------------------------------------------------

};
}