// July 2002, java applet by Oliver Knill  for the CCP project
// Green's Theorem and the Planimeter by Oliver Knill and Dale Winter
// Harvard University, Nov 15, 2002. See
// http://math.duke.edu/education/ccp/materials/mvcalc/green
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License of the Free Software Foundation for
// details.  Compile with 
// javac -O instrument.java comment.java wheel.java curve.java planimeter.java

import java.lang.Math;
import java.awt.*;

class comment {

private int tx,ty;                          // position of the text
private int tx2,ty2;                        // position of the text
private int n0;                             // integers
private int n0_old=0;                       // integers

public comment(int width,int height) {
  tx=12; 
  ty=70; 
  tx2=450;
  ty2=450;
}

public void update( Graphics g,double sum1 ) {
  Font f = new Font("Helvetica",Font.BOLD,12); g.setFont(f); 
  n0=(int) (Math.abs(sum1))/10; 
  g.setColor(new Color(0,0,0));
  g.drawString(""+n0_old,tx,ty);
  g.setColor(new Color(255,0,255));
  g.drawString(""+n0,tx,ty);

  Font f2 = new Font("Helvetica",Font.BOLD,24); g.setFont(f2);
  n0=(int) (Math.abs(sum1))/10;
  g.setColor(new Color(0,0,0));
  g.drawString(""+n0_old,tx2,ty2);
  g.setColor(new Color(255,0,255));
  g.drawString(""+n0,tx2,ty2);

  n0_old=n0;
}

}