/**
*  Faces - draws Chernoff faces
*
*          Based on Faces.c, by Dave Johnson, who got it from Clifford
*          Pickover's Chernoff face routine, in the book "Computers,
*          Pattern, Chaos, and Beauty." Inspired by Brad Mohr's Faces
*          plug-in for AfterDark screen saver.
* 
*          0 head eccentricity
*          1 eye eccentricity
*          2 pupil size
*          3 eyebrow slope
*          4 nose size
*          5 mouth vert. offset
*          6 eye spacing
*          7 eye size
*          8 mouth width
*          9 mouth "openness"
*/

import java.awt.*;
import java.applet.Applet;
import Face;

public class Faces extends Applet implements Runnable {
  int[] params = {0,0,0,0,0,0,0,0,0,0};

  Point thePt;
  Face f = new Face();
  Thread kicker;
  Rectangle Chernoff = new Rectangle( 0, 0, 0, 0 );

  int paused;
  int scaleFactor;
  int speedFactor;
  int AppletHeight, AppletWidth;
  int xDim = 0;                       // x dimension of new rectangle
  int yDim = 0;                       // y dimension of new rectangle
  int wDim = 0;                       // width of new rectangle
  int hDim = 0;                       // height of new rectangle

  boolean useColor;
  boolean useRightBrainStyle;
  boolean useScrolls;

  // used only in interactive mode
  Scrollbar s0, s1, s2, s3, s4, s5, s6, s7, s8, s9;
  Label     l0, l1, l2, l3, l4, l5, l6, l7, l8, l9;
//  TextField t0, t1, t2, t3, t4, t5, t6, t7, t8, t9;
  Panel scrollPanel, facePanel;

  public void init() {
    // set layout
    setLayout(new BorderLayout(100,100));

    // set the background to a nice black
    setBackground(Color.black);
    setForeground(Color.white);

    // get whether or not to use color
    String color = getParameter("color");
    if( (color == null) || (color.equalsIgnoreCase("true")) ) { 
      useColor = true;
      System.out.println("Using color.");
    } else {
      useColor = false;
      System.out.println("Not using color.");
    }

    // should we be using a scrollbar (interactive mode)?
    String mode = getParameter("mode");
    if( (mode == null) || (mode.equalsIgnoreCase("auto")) ) {
      useScrolls = false;
      System.out.println("Using automatic mode...");

      // get the style
      String style = getParameter("style");
      if( (style == null) || (style.equalsIgnoreCase("right")) ) {
	useRightBrainStyle = true;
	System.out.println("Using right brain style.");
      } else {
	useRightBrainStyle = false;
	System.out.println("Using left brain style.");
      }

      // get the average size to use
      String size = getParameter("size");
      if( (size == null) || (size.equalsIgnoreCase("random")) )
	scaleFactor = 0;
      else if( size.equalsIgnoreCase("small") )
	scaleFactor = 1;
      else if( size.equalsIgnoreCase("medium") )
	scaleFactor = 2;
      else if( size.equalsIgnoreCase("large") )
	scaleFactor = 3;
      System.out.println("The faces will be " + size);
      System.out.println("scaleFactor: " + scaleFactor);

      // get the speed at which to refresh the faces
      String speed = getParameter("speed");
      if( (speed == null) || (speed.equalsIgnoreCase("random")))
	speedFactor = 0;
      else if( speed.equalsIgnoreCase("slow") )
	speedFactor = 1;
      else if( speed.equalsIgnoreCase("medium") )
	speedFactor = 2;
      else if( speed.equalsIgnoreCase("fast") )
	speedFactor = 3;
      System.out.println("The speed will be " + speed);
      System.out.println("speedFactor: " + speedFactor);
    } else {
      useScrolls = true;
      System.out.println("Using interactive mode...");

      // set up our layout manager, panels
      Canvas faceArea = new Canvas();
      scrollPanel = new Panel();
      facePanel   = new Panel();

      scrollPanel.setLayout(new GridLayout(30,8));
      facePanel.setLayout(new GridLayout(1,1));

      // initialize scrollbars, labels, and textfields
      s0 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l0 = new Label("Head Eccentricity");
//      t0 = new TextField("0",5);

      s1 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l1 = new Label("Eye Eccentricity");
//      t1 = new TextField("0",5);      

      s2 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l2 = new Label("Pupil Size");
//      t2 = new TextField("0",5);

      s3 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l3 = new Label("Eyebrow Slope");
//      t3 = new TextField("0",5);

      s4 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l4 = new Label("Nose Size");
//      t4 = new TextField("0",5);      

      s5 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l5 = new Label("Mouth Vertical Offset");
//      t5 = new TextField("0",5);

      s6 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l6 = new Label("Eye Spacing");
//      t6 = new TextField("0",5);

      s7 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l7 = new Label("Eye Size");
//      t7 = new TextField("0",5);      

      s8 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l8 = new Label("Mouth Width");
//      t8 = new TextField("0",5);

      s9 = new Scrollbar(Scrollbar.HORIZONTAL, 0, 64, -127, 128);
      l9 = new Label("Mouth Openness");
//      t9 = new TextField("0",5);

      // add them to our layout
      scrollPanel.add(l0); scrollPanel.add(s0);// scrollPanel.add(t0);
      scrollPanel.add(l1); scrollPanel.add(s1);// scrollPanel.add(t1);
      scrollPanel.add(l2); scrollPanel.add(s2);// scrollPanel.add(t2);
      scrollPanel.add(l3); scrollPanel.add(s3);// scrollPanel.add(t3);
      scrollPanel.add(l4); scrollPanel.add(s4);// scrollPanel.add(t4);
      scrollPanel.add(l5); scrollPanel.add(s5);// scrollPanel.add(t5);
      scrollPanel.add(l6); scrollPanel.add(s6);// scrollPanel.add(t6);
      scrollPanel.add(l7); scrollPanel.add(s7);// scrollPanel.add(t7);
      scrollPanel.add(l8); scrollPanel.add(s8);// scrollPanel.add(t8);
      scrollPanel.add(l9); scrollPanel.add(s9);// scrollPanel.add(t9);

      // resize canvas, add to the facePanel
      faceArea.reshape(1,1, (AppletWidth/2), (AppletHeight/2));
      facePanel.add(faceArea);

      // and add the panels to our applet
      add("East",scrollPanel);
      add("South",facePanel);
    }

    // how big should we make the applet? 
    String height = getParameter("height");
    String width  = getParameter("width");
    AppletHeight = Integer.parseInt(height);
    AppletWidth  = Integer.parseInt(width);

    resize( AppletHeight, AppletWidth );
  }

  public void Paint(Graphics g) {
    update(g);
  }

  public void update(Graphics g) {

    // are we in interactive mode?
    if( useScrolls == true ) {
      // set Chernoff rectangle to something good
      Chernoff.reshape(1,1,(AppletWidth/2),(AppletHeight/2));
    } else {
      // Right Brain Mode?
      if( useRightBrainStyle == true ) {
	
	// Randomly size the rectangle
	xDim = (int) (Math.random() * AppletWidth);
	yDim = (int) (Math.random() * AppletHeight);
	wDim = ((int) (Math.random() * (AppletWidth/4)) + (AppletWidth/8));
	hDim = wDim;
	Chernoff.reshape(xDim, yDim, wDim, hDim);

      } else {     // Left Brain Mode

	// Pick somewhere to put the next face (8x8 grid)
	int tmp;
	
	// pick from 8, ensure not zero
	tmp = ((int) (Math.random() * 8)) + 1;
	
	// lay out along grid, including first row and column
	xDim = ((tmp * (AppletWidth / 8)) - (AppletWidth / 8));
	// ... and do it again for the y dimension
	
	tmp = ((int) (Math.random() * 8)) + 1;
	yDim = ((tmp * (AppletHeight / 8)) - (AppletHeight / 8));
	Chernoff.reshape(xDim, yDim, 
			 (AppletHeight/8), 
			 (AppletWidth/8));
      }
    }
//    } else {     // Grand Mal Seizure ;)
//      xDim = (int) (Math.random() * AppletWidth);
//      yDim = (int) (Math.random() * AppletHeight);
//      Chernoff.reshape((AppletWidth - xDim),
//		       (AppletHeight - yDim),
//		       (xDim/4), (yDim/4));

    // Randomize the parameters if we're not using scrolls
    if( useScrolls == false ) {
      int i;
      for(i=0; i<=9; i++) {
	params[i] = ((int)(Math.random() * 255) - 127);
      }
    }

    // either use color or not - if using color, randomize it
    if( useColor == true ) {
      // this gives us a nice bright set of colors
      Color c = new Color((128 + (int)(Math.random() * 127)), 
			  (128 + (int)(Math.random() * 127)),
			  (128 + (int)(Math.random() * 127)));
      g.setColor(c);
    } else { 
      // use white as the default color
      g.setColor(Color.white);
    }

    // draw our face in the rectangle
    f.DrawFace( Chernoff, params, g );
  }

  public void start() {    
    if(kicker == null) {
      kicker=new Thread(this);
      kicker.start();
    }
  }

  public void stop() {
    if (kicker != null && kicker.isAlive()) {
      kicker.stop();
    }
    kicker=null;
  }

  public void run() {
    for(;;) {
      repaint();
      try {
	Thread.sleep(500 / (speedFactor + 1));
      } catch(InterruptedException e) {}
    }
  }

  public boolean handleEvent(Event evt) {
    if (evt.id == Event.MOUSE_DOWN) {
      if (kicker.isAlive() && paused==0) {
	kicker.suspend(); paused=1;
	System.out.println("suspending Faces...");
      }
      else {
	if (kicker.isAlive() && paused==1) {
	  kicker.resume(); paused=0;
	  System.out.println("resuming Faces...");
	}
      }
    }
    else if (evt.target instanceof Scrollbar) {
      int value = ((Scrollbar)evt.target).getValue();
      Integer Value = new Integer(value);
      if( evt.target == s0 ) {
	params[0] = value;
	System.out.println("The value is: " + value);
//	t0.setText(Value.toString());
      }
      if( evt.target == s1 ) {
	params[1] = value;
	System.out.println("The value is: " + value);
//	t1.setText(Value.toString());
      }
      if( evt.target == s2 ) {
	params[2] = value;
	System.out.println("The value is: " + value);
//	t2.setText(Value.toString());
      }
      if( evt.target == s3 ) {
	params[3] = value;
	System.out.println("The value is: " + value);
//	t3.setText(Value.toString());
      }
      if( evt.target == s4 ) {
	params[4] = value;
	System.out.println("The value is: " + value);
//	t4.setText(Value.toString());
      }
      if( evt.target == s5 ) {
	params[5] = value;
	System.out.println("The value is: " + value);
//	t5.setText(Value.toString());
      }
      if( evt.target == s6 ) {
	params[6] = value;
	System.out.println("The value is: " + value);
//	t6.setText(Value.toString());
      }
      if( evt.target == s7 ) {
	params[7] = value;
	System.out.println("The value is: " + value);
//	t7.setText(Value.toString());
      }
      if( evt.target == s8 ) {
	params[8] = value;
	System.out.println("The value is: " + value);
//	t8.setText(Value.toString());
      }
      if( evt.target == s9 ) {
	params[9] = value;
	System.out.println("The value is: " + value);
//	t9.setText(Value.toString());
      }

      return true;
    }
    return super.handleEvent(evt);
  }
}