//  FlyingArrowApplication.cs  (c) Kari Laitinen

//  http://www.naturalprogramming.com/

//  2008-02-22  File created.
//  2022-12-20  Tested in Developer Command Prompt for VS 2022.

//  This is a C# application that demonstrates
//    - the use of the GraphicsPath class
//    - transformations of the graphical coordinate system

using System ;
using System.Windows.Forms ;
using System.Drawing ;
using System.Drawing.Drawing2D ;

class FlyingArrowForm : Form
{
   public FlyingArrowForm()
   {
      Text = "DEMONSTRATING 2D GRAPHICS" ;  // Setting window title.
      Size = new Size( 800, 500 ) ;         // Size of the window.
   }

   protected override void OnPaint( PaintEventArgs paint_data )
   {
      Graphics graphics = paint_data.Graphics ;

      //  The arrow coordinates are selected so that Point (0, 0)
      //  is at the tip of the arrow, and the arrow points upwards.

      Point[] arrow_shape_coordinates  =
      {  new Point(   0,   0 ), new Point( 15,  40 ), new Point(  5,  30 ),
         new Point(   5, 120 ), new Point( 15, 160 ), new Point(  0, 130 ),
         new Point( -15, 160 ), new Point( -5, 120 ), new Point( -5,  30 ),
         new Point( -15,  40 )
      } ;

      GraphicsPath  flying_arrow  =  new  GraphicsPath() ;

      flying_arrow.StartFigure() ;
      flying_arrow.AddLines( arrow_shape_coordinates ) ;
      flying_arrow.CloseFigure() ;

      Brush black_brush = new SolidBrush( Color.Black ) ;
      Pen   black_pen   = new Pen( Color.Black ) ;

      graphics.TranslateTransform( 150, 250 ) ;  // arrow tip to ( 150, 250 )
      graphics.FillPath( black_brush, flying_arrow ) ; // draw solid arrow

      graphics.RotateTransform( 45 ) ;                 // 45 degrees clockwise
      graphics.DrawPath( black_pen, flying_arrow ) ;   // draw a hollow arrow

      graphics.TranslateTransform( 0, -200 ) ;         // flying "up" 200 points
      graphics.FillPath( black_brush, flying_arrow ) ;

      graphics.RotateTransform( 45 ) ;                 // 45 degrees clockwise
      graphics.TranslateTransform( 0, -200 ) ;         // flying "up" (right)
      graphics.FillPath( black_brush, flying_arrow ) ;

      graphics.TranslateTransform( 0, -100 ) ;       // flying "up" 100 points
      graphics.RotateTransform( 90 ) ;               // 90 degrees clockwise
      graphics.ScaleTransform( 1.5F, 1.5F ) ;        // magnify everything by 1.5
      graphics.DrawPath( black_pen, flying_arrow ) ; // "up" means now down
      graphics.TranslateTransform( 0, -200 ) ;       // flying "up" 300 points
      graphics.FillPath( black_brush, flying_arrow ) ;
  }
}


class FlyingArrowApplication
{
   static void Main()
   {
      Application.Run( new FlyingArrowForm() ) ;
   }
}