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FunctionGrowth
FunctionGrowth.java
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import javax.swing.event.*;
/**
* A class that demonstrates the relative speed of growth of various functions
*
* @author Cory Lueninghoener <cluening@cse.unl.edu>
*/
public class FunctionGrowth extends JApplet {
boolean isLinked = false;
boolean isStandalone = false;
JSlider ySlider = new JSlider();
BorderLayout borderLayout1 = new BorderLayout();
JSlider xSlider = new JSlider();
GraphPanel graphPanel = new GraphPanel();
JPanel jPanel1 = new JPanel();
JToggleButton linkButton = new JToggleButton();
BorderLayout borderLayout2 = new BorderLayout();
JPanel jPanel2 = new JPanel();
JComboBox f1 = new JComboBox();
JComboBox f2 = new JComboBox();
JComboBox f3 = new JComboBox();
JTextField f1Const = new JTextField();
JTextField f2Const = new JTextField();
JTextField f3Const = new JTextField();
JLabel xLabel1 = new JLabel();
JLabel xLabel2 = new JLabel();
JLabel xLabel3 = new JLabel();
/**Get a parameter value*/
public String getParameter(String key, String def) {
return isStandalone ? System.getProperty(key, def) :
(getParameter(key) != null ? getParameter(key) : def);
}
/**Construct the applet*/
public FunctionGrowth() {
}
/**Initialize the applet*/
public void init() {
f1.addItem("1");
f1.addItem("n^.1");
f1.addItem("log(n)");
f1.addItem("sqrt(n)");
f1.addItem("n");
f1.addItem("nlog(n)");
f1.addItem("n^2");
f1.addItem("n^3");
f1.addItem("n^4");
f1.addItem("2^n");
f1.addItem("3^n");
f1.addItem("n!");
f1.setSelectedIndex(graphPanel.getCurGraph(1));
f2.addItem("1");
f2.addItem("n^.1");
f2.addItem("log(n)");
f2.addItem("sqrt(n)");
f2.addItem("n");
f2.addItem("nlog(n)");
f2.addItem("n^2");
f2.addItem("n^3");
f2.addItem("n^4");
f2.addItem("2^n");
f2.addItem("3^n");
f2.addItem("n!");
f2.setSelectedIndex(graphPanel.getCurGraph(2));
f3.addItem("1");
f3.addItem("n^.1");
f3.addItem("log(n)");
f3.addItem("sqrt(n)");
f3.addItem("n");
f3.addItem("nlog(n)");
f3.addItem("n^2");
f3.addItem("n^3");
f3.addItem("n^4");
f3.addItem("2^n");
f3.addItem("3^n");
f3.addItem("n!");
f3.setSelectedIndex(graphPanel.getCurGraph(3));
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}
}
/**Component initialization*/
private void jbInit() throws Exception {
this.setSize(new Dimension(523, 300));
this.getContentPane().setLayout(borderLayout1);
ySlider.setMinorTickSpacing(1);
ySlider.setMajorTickSpacing(10);
ySlider.setOrientation(JSlider.VERTICAL);
ySlider.setMinimum(1);
ySlider.setValue(graphPanel.getYMax());
ySlider.setMaximum(60);
ySlider.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(ChangeEvent e) {
ySlider_stateChanged(e);
}
});
xSlider.setMinorTickSpacing(1);
xSlider.setMajorTickSpacing(10);
xSlider.setMinimum(1);
xSlider.setValue(graphPanel.getXMax());
xSlider.setMaximum(60);
xSlider.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(ChangeEvent e) {
xSlider_stateChanged(e);
}
});
graphPanel.setBorder(BorderFactory.createLoweredBevelBorder());
linkButton.setText("Link");
linkButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
linkButton_actionPerformed(e);
}
});
jPanel1.setLayout(borderLayout2);
f1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f1_actionPerformed(e);
}
});
f2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f2_actionPerformed(e);
}
});
f3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f3_actionPerformed(e);
}
});
f1.setForeground(Color.red);
f2.setForeground(new Color(0, 200, 0));
f3.setForeground(Color.blue);
f1Const.setMinimumSize(new Dimension(30, 19));
f1Const.setPreferredSize(new Dimension(30, 19));
f1Const.setText("1");
f1Const.setHorizontalAlignment(SwingConstants.TRAILING);
f1Const.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f1Const_actionPerformed(e);
}
});
f2Const.setMinimumSize(new Dimension(30, 19));
f2Const.setPreferredSize(new Dimension(30, 19));
f2Const.setText("1");
f2Const.setHorizontalAlignment(SwingConstants.TRAILING);
f2Const.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f2Const_actionPerformed(e);
}
});
f3Const.setMinimumSize(new Dimension(30, 19));
f3Const.setPreferredSize(new Dimension(30, 19));
f3Const.setText("1");
f3Const.setHorizontalAlignment(SwingConstants.TRAILING);
f3Const.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
f3Const_actionPerformed(e);
}
});
xLabel1.setText("X");
xLabel2.setText("X");
xLabel3.setText("X");
this.getContentPane().add(graphPanel, BorderLayout.CENTER);
this.getContentPane().add(ySlider, BorderLayout.WEST);
this.getContentPane().add(jPanel1, BorderLayout.SOUTH);
jPanel1.add(linkButton, BorderLayout.WEST);
jPanel1.add(xSlider, BorderLayout.CENTER);
this.getContentPane().add(jPanel2, BorderLayout.NORTH);
jPanel2.add(f1Const, null);
jPanel2.add(xLabel1, null);
jPanel2.add(f1, null);
jPanel2.add(f2Const, null);
jPanel2.add(xLabel2, null);
jPanel2.add(f2, null);
jPanel2.add(f3Const, null);
jPanel2.add(xLabel3, null);
jPanel2.add(f3, null);
}
/**Get Applet information*/
public String getAppletInfo() {
return "Applet Information";
}
/**Get parameter info*/
public String[][] getParameterInfo() {
return null;
}
//static initializer for setting look & feel
static {
try {
//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
}
catch(Exception e) {
}
}
private void xSlider_stateChanged(ChangeEvent e) {
int n = xSlider.getValue();
int newvalue = (int)Math.pow(10, n/10)*(1+n%10);
//System.out.println("X changed :" + newvalue);
graphPanel.setXMax(newvalue);
graphPanel.setXVal(n);
if(isLinked){
ySlider.setValue(n);
graphPanel.setYMax(newvalue);
}
graphPanel.repaint();
}
private void ySlider_stateChanged(ChangeEvent e) {
int n = ySlider.getValue();
int newvalue = (int)Math.pow(10, n/10)*(1+n%10);
//System.out.println("Y changed :" + newvalue);
graphPanel.setYMax(newvalue);
graphPanel.setYVal(n);
if(isLinked){
xSlider.setValue(n);
graphPanel.setXMax(newvalue);
}
graphPanel.repaint();
}
private void linkButton_actionPerformed(ActionEvent e) {
if(isLinked == false){
isLinked = true;
ySlider.setValue(xSlider.getValue());
graphPanel.setYMax(xSlider.getValue());
} else {
isLinked = false;
}
}
private void f1_actionPerformed(ActionEvent e) {
System.out.println(f1.getSelectedIndex());
graphPanel.setCurGraph(1, f1.getSelectedIndex());
graphPanel.repaint();
}
private void f2_actionPerformed(ActionEvent e) {
System.out.println(f2.getSelectedIndex());
graphPanel.setCurGraph(2, f2.getSelectedIndex());
graphPanel.repaint();
}
private void f3_actionPerformed(ActionEvent e) {
System.out.println(f3.getSelectedIndex());
graphPanel.setCurGraph(3, f3.getSelectedIndex());
graphPanel.repaint();
}
private void f1Const_actionPerformed(ActionEvent e) {
int newval = 0;
try{
newval = Integer.parseInt(f1Const.getText());
}
catch(Exception except){
newval = 1;
f1Const.setText("1");
}
finally{};
if(newval > 0){
graphPanel.setCurConst(1, newval);
}
else{
f1Const.setText("1");
graphPanel.setCurConst(1, 1);
}
graphPanel.repaint();
}
private void f2Const_actionPerformed(ActionEvent e) {
graphPanel.setCurConst(2, Integer.parseInt(f2Const.getText()));
graphPanel.repaint();
}
private void f3Const_actionPerformed(ActionEvent e) {
graphPanel.setCurConst(3, Integer.parseInt(f3Const.getText()));
graphPanel.repaint();
}
}
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