import java.applet.*;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

import com.genlogic.*;

//////////////////////////////////////////////////////////////////////////

public class GlgRobotArmDemo extends GlgJBean implements ActionListener

{
   //////////////////////////////////////////////////////////////////////////
   // The main demo class
   //////////////////////////////////////////////////////////////////////////

   static final int NUM_ELBOWS = 7;
   boolean
     IsReady = false,
     AutoUpdate = true,
     WireFrame = false;
   GlgAnimationValue elbow_array[] = new GlgAnimationValue[ NUM_ELBOWS ];


   Timer timer = null;


   //////////////////////////////////////////////////////////////////////////
   public GlgRobotArmDemo()
   {
      super();


      SetDResource( "$config/GlgSwingUsage", 1. );

      SetDResource( "$config/GlgAntiAliasing", 1. );  // Enable antialiasing
   }

   //////////////////////////////////////////////////////////////////////////
   // Starts the update timer
   //////////////////////////////////////////////////////////////////////////
   public void ReadyCallback()
   {
      if( GetJavaLog() )
	PrintToJavaConsole( "Debug: Ready\n" );

      super.ReadyCallback();

      InitializeArrays();
      
      WireFrame = false;
      SetWireFrame();


      if( timer == null )
      {
	 timer = new Timer( 30, this );
	 timer.setRepeats( true );
	 timer.start();
      }


      IsReady = true;      
   }

   //////////////////////////////////////////////////////////////////////////
   // For using as a stand-alone java demo
   //////////////////////////////////////////////////////////////////////////
   public static void main( final String arg[] )
   {

      SwingUtilities.
	invokeLater( new Runnable(){ public void run() { Main( arg ); } } );

   }

   //////////////////////////////////////////////////////////////////////////
   public static void Main( final String arg[] )
   {
      class DemoQuit extends WindowAdapter
      {
         public void windowClosing( WindowEvent e ) { System.exit( 0 ); }
      } 


      JFrame frame = new JFrame();

      frame.setResizable( true );
      frame.setSize( 600, 450 );
      frame.setLocation( 20, 20 );

      GlgRobotArmDemo robot_arm = new GlgRobotArmDemo();      

      frame.getContentPane().add( robot_arm );

      frame.addWindowListener( new DemoQuit() );
      frame.show();

      // Setting the viewport triggers the ReadyCallback which starts
	// updates
      robot_arm.SetViewport( GlgObject.LoadWidget( "robot_arm.glg",
						  GlgObject.FILE ) );
   }

   //////////////////////////////////////////////////////////////////////////
   public void UpdateRobotArm()
   { 
      int i;

      if( AutoUpdate )
      {
	 // Calculate and set new resource values
	 // Different elbows of the arm are named "s0" - "s6" in the drawing.
	 // The controlling parameters of elbows' rotation transformations
         // are named "Value". 

         // Update all seven elbows of the robot arm
         for( i=0; i < NUM_ELBOWS; ++i )
           elbow_array[ i ].Iterate();

         Update();   // Show changes
      }
   }

   //////////////////////////////////////////////////////////////////////////
   public void StartUpdate()
   {
      AutoUpdate = true;
   }

   //////////////////////////////////////////////////////////////////////////
   public void StopUpdate()
   {
      AutoUpdate = false;
   }

   //////////////////////////////////////////////////////////////////////////
   public void ToggleWireFrame()
   {
      WireFrame = !WireFrame;
      SetWireFrame();
   }

   //////////////////////////////////////////////////////////////////////////
   void SetWireFrame()
   {
      SetDResource( "robot_area/robot_arm/ZSort", WireFrame ? 0. : 1. );
      SetDResource( "robot_area/fill_type", WireFrame ? 1. : 3. );
      Update();
   }

   //////////////////////////////////////////////////////////////////////////
   void InitializeArrays()
   {
      // Initilize simulation controlling parameters
      elbow_array[ 0 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0,  70, -0.75, 0.75, "s0/Value" );
      elbow_array[ 1 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0,  60,  0.75, 0.75, "s1/Value" );
      elbow_array[ 2 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0, 200,  0.,   1.,   "s2/Value" );
      elbow_array[ 3 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0, 150,  0.,   1.,   "s3/Value" );
      elbow_array[ 4 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0,  30,  0.,   1.,   "s4/Value" );
      elbow_array[ 5 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0, 100,  0.,   1.,   "s5/Value" );
      elbow_array[ 6 ] =
         new GlgAnimationValue( this, GlgAnimationValue.SIN,
                                0,  20,  0.,   1.,   "s6/Value" );
   }

   //////////////////////////////////////////////////////////////////////////
   // Stops updates when used as an applet.
   //////////////////////////////////////////////////////////////////////////
   public void stop()
   {

      if( timer != null )
      {
	 timer.stop();
	 timer = null;
      }

      super.stop();
   }


   //////////////////////////////////////////////////////////////////////////
   // ActionListener method to use the bean as update timer's ActionListener.
   //////////////////////////////////////////////////////////////////////////
   public void actionPerformed( ActionEvent e )
   {
      if( timer != null )
	UpdateRobotArm();
   }


}