Java/Advanced Graphics/Math Notation

Math Notation Demo

   <source lang="java">

import java.awt.*; import java.applet.*; import java.net.URL; import java.util.*; import graph.*; /*************************************************************************

• • Applet example4
  • Version 1.0 January 1996
  • Copyright (C) 1996 Leigh Brookshaw
  • This program is free software; you can redistribute it and/or modify
  • it under the terms of the GNU General Public License as published by
  • the Free Software Foundation; either version 2 of the License, or
  • (at your option) any later version.
  • 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 for more details.
  • You should have received a copy of the GNU General Public License
  • along with this program; if not, write to the Free Software
  • Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  • This is a simple applet that demonstrates how to use the TextLine
  • Class
  • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • /

public class example4 extends Applet {

     TextLine text = new TextLine();

     public void init() {
     }
     public void paint(Graphics g) {
          drawtext(g);
     }
     public void update(Graphics g) {
          drawtext(g);
     }
     public void drawtext(Graphics g) {
          Rectangle r = bounds();
          int x = r.x+r.width/2;
          int y = r.y;
          text.setFont(new Font("TimesRoman",Font.PLAIN,20));

          text.setColor( new Color(0,200,0) );
          text.setText("Examples of the TextLine Class");
          y += text.getHeight(g);
          text.draw(g,x,y,TextLine.CENTER);

          text.setColor(Color.black);
          text.setText("y=x$^2 ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setText(" y=x^2");
          text.draw(g,x,y,TextLine.LEFT);

          text.setColor(Color.black);
          text.setText("ln(y${$^x$_i$}) ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setText(" ln(y{^x_i})");
          text.draw(g,x,y,TextLine.LEFT);

          text.setColor(Color.black);
          text.setText("text ${$_subscripted$} or ${$^superscripted$} ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setBackground(Color.black);
          text.setText(" text {_subscripted} or {^superscripted}");
          text.draw(g,x,y,TextLine.LEFT);
          text.setBackground(null);

          text.setColor(Color.black);
          text.setText("ln(y${$^x$_i$})$^cos(z) ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setText(" ln(y{^x_i})^cos(z) ");
          text.draw(g,x,y,TextLine.LEFT);

          text.setColor(Color.black);
          text.setText("A${$^b$}${$_c$}D ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setText(" A{^b}{_c}D");
          text.draw(g,x,y,TextLine.LEFT);
          text.setColor( new Color(0,200,0) );
          text.setText("Examples of the TextLine.parseDouble() method");
          y += 2.0*text.getHeight(g);
          text.draw(g,x,y,TextLine.CENTER);
          text.setColor(Color.black);
          text.setText("0.000103452789  ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.parseDouble(0.000103452789,7,5,TextLine.ALGEBRAIC);
          text.draw(g,x,y,TextLine.LEFT);
          text.setColor(Color.black);
          text.setText("1.03452789E10  ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setBackground(Color.black);
          text.parseDouble(1.03452789e10,4,3,TextLine.ALGEBRAIC);
          text.draw(g,x,y,TextLine.LEFT);
          text.setBackground(null);
          text.setColor(Color.black);
          text.setText("-1.03452789E10  ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setBackground(Color.black);
          text.parseDouble(-1.03452789e10,5,5,TextLine.ALGEBRAIC);
          text.draw(g,x,y,TextLine.LEFT);
          text.setBackground(null);
          text.setColor(Color.black);
          text.setText("-1.03452789E7  ");
          y += 1.5*text.getHeight(g);
          text.draw(g,x,y,TextLine.RIGHT);
          text.setColor(Color.magenta);
          text.setBackground(Color.black);
          text.parseDouble(-1.03452789e7,6,6,TextLine.SCIENTIFIC);
          text.draw(g,x,y,TextLine.LEFT);
          text.setBackground(null);
     }
     public static void main(String[] a){
        javax.swing.JFrame f = new javax.swing.JFrame();
        Applet app = new example4();
        app.init();
        
        f.getContentPane().add (app);
        f.pack();
        f.setSize (new Dimension (500, 500));
        f.setVisible(true);
     }

}

      </source>
   
  
 
  

Point Annotations

   <source lang="java">

import java.awt.*; import java.awt.event.*; import javax.swing.*; import no.geosoft.cc.graphics.*;

/**

* G demo program. Demonstrates:
*

*

*
• Point annotations *
• Annotation algorithm *
• Annotation background color *
• Point images *
• Printing feature *

* 
* @author