package adaptive.agents.tutor;

import adaptive.core.*;

/*****************************************************************************
 *
 * Copyright 2000, Institute for Complex Engineered Systems,
 *                 Carnegie Mellon University
 * PROJECT: Self-adaptive Software
 * DESCRIPTION: agent to display a waveform in a small gui frame
 *
 * @author Jonathan R Jackson <A HREF="mailto:jackson4@andrew.cmu.edu">jackson4@andrew.cmu.edu>/A>
 *
 * REVISION HISTORY:
 *
 * $Log: PBAWaveDisplay.java,v $
 *
 * 
 ****************************************************************************/
public class PBAWaveDisplay extends PBAgent
{
  final static protected boolean DEBUG=true;
  final static float FREQ=10;//in Hz;

  //put internal structure definitions here
    protected WaveFrame display;
/**********************************************************************
Description: Required default constructor required by Agent interface.
sets the number, type, and names for input and output ports
@param none
@return nada
@exception none
**********************************************************************/
  public void initialize(){
    setNumInputsOutputs(1,0);
    setInputPortType(Object.class,0);
    setInputPortName("Object",0);
    this.setSleepTime((int)(1000/FREQ));
  } /* initialize() */

/**********************************************************************
<! Description: > initializes output ports' values.
@param none
@return boolean (true=success),(false=failure)
@exception none
**********************************************************************/
  protected boolean initOutputVals(){
    return( true );

  } /* initOutputVals() */
    

/**********************************************************************
Description: allocates data internals.
@param none
@return nada
@exception none
**********************************************************************/
  protected void allocateInternals(){
      display=new WaveFrame("Square Wave",0,10000,-0.1f,1.1f,10);
      display.show();
      display.start();
  } /* allocateInternals() */
	    


/**********************************************************************
Description: Required main loop of the agent.
     Called with each cycle of operation for the agent
@param none
@return nada
@exception none
**********************************************************************/
  public void runLoop(){
      Boolean input=(Boolean)getInput(0);
      if (input.booleanValue()){
	  display.update(1.0f);
      }
      else{
	  display.update(0.0f);
      }

  } /* runLoop() */

}