//  FlyingArrowApplet.java  (c) 2005 Kari Laitinen

//  2006-01-27  File created.
//  2006-01-27  Latest modification.

//  This is a Java Swing applet that demonstrates Java 2D features.

import java.awt.* ;
import java.awt.geom.* ; //  Classes GeneralPath etc.
import javax.swing.* ;

class FlyingArrowPanel extends JPanel
{
   public void paintComponent( Graphics graphics )
   {
      super.paintComponent( graphics ) ;

      Graphics2D  graphics2D  =  (Graphics2D) graphics ;

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

      int[]  arrow_shape_coordinates_x  =
             { 0,  15,   5,   5,  15,   0, -15,  -5,  -5, -15 } ;

      int[]  arrow_shape_coordinates_y  =
             { 0,  40,  30, 120, 160, 130, 160, 120,  30,  40 } ;

      GeneralPath  flying_arrow  =  new  GeneralPath() ;

      flying_arrow.moveTo( arrow_shape_coordinates_x[ 0 ],
                           arrow_shape_coordinates_y[ 0 ] ) ;

      for ( int point_index  =  1 ;
                point_index  <  arrow_shape_coordinates_x.length ;
                point_index  ++ )
      {
         flying_arrow.lineTo( arrow_shape_coordinates_x[ point_index ],
                              arrow_shape_coordinates_y[ point_index ] ) ;
      }

      flying_arrow.closePath() ;

      graphics2D.translate( 150, 250 ) ;  // arrow tip to point (150, 250 )
      graphics2D.fill( flying_arrow ) ;   // draw solid arrow

      graphics2D.rotate( Math.PI / 4 ) ;  // 45 degrees clockwise
      graphics2D.draw( flying_arrow ) ;   // draw a hollow arrow

      graphics2D.translate( 0, -200 ) ;   // flying "up" 200 points
      graphics2D.fill( flying_arrow ) ;

      graphics2D.rotate( Math.PI / 4 ) ;  // 45 degrees clockwise
      graphics2D.translate( 0, -200 ) ;   // flying "up" (i.e. to the right)
      graphics2D.fill( flying_arrow ) ;

      graphics2D.translate( 0, -100 ) ;   // flying "up" 100 points
      graphics2D.rotate( Math.PI / 2 ) ;  // 90 degrees clockwise
      graphics2D.scale( 1.5, 1.5 ) ;      // magnify everything by 1.5
      graphics2D.draw( flying_arrow ) ;   // draw a hollow arrow
      graphics2D.translate( 0, -200 ) ;   // flying "up" (i.e. down) 300 points
      graphics2D.fill( flying_arrow ) ;
  }
}


public class FlyingArrowApplet extends JApplet
{
   public void init()
   {
      getContentPane().add( new FlyingArrowPanel() ) ; 
   }
}


/*  These are old (and bad) arrow coordinates:



      int[]  arrow_shape_coordinates_x  =
             { 15, 30, 20,  20,  30,  15,   0,  10, 10,  0 } ;

      int[]  arrow_shape_coordinates_y  =
             {  0, 50, 40, 140, 170, 150, 170, 140, 40, 50 } ;


      //  The following coordinates are selected so that Point (0, 0)
      //  is at the center point of the arrow.

      int[]  arrow_shape_coordinates_x  =
             {   0,  15,   5,  5,  15,   0, -15, -5,  -5, -15 } ;

      int[]  arrow_shape_coordinates_y  =
             { -80, -40, -50, 40,  80,  50,  80, 40, -50, -40 } ;

*/