📄 life3d.java
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// Life3D.java// Andrew Davison, July 2006, ad@fivedots.coe.psu.ac.th/* This JFrame wraps up two different applications. When called as: > java Life3D it displays a rotating 3D grid of cells which obey rules inspired by Conway's Game of Life. When called as: > java Life3D -edit it loads a GUI which allows 7 application properties to be viewed and modified: * fullscreen: whether the Life3D appl is full-screen * width, height: the dimensions of the Life3D appl window if not full-screen * bgColour: the background colour used in Life3D; it may be blue, green, white, or black * speed: the speed that the balls grid rotates; it may be slow, medium, or fast * the birth and die ranges used by the Life rules. The application properties are managed by a LifeProperties object which stores them as key=value pairs in a local text file. The full-screen version of Life3D can be used as a screensaver when combined with JScreenSaver's SCR windows application by Yoshinori Watanabe (available from http://homepage2.nifty.com/igat/igapyon/soft/jssaver.html and http://sourceforge.net/projects/jssaver/). It's actually JScreenSaver which requires the duel-use interface which is implemented here. When in full-screen mode, Life3D is terminated by the user typing esc, q, end, or ctrl-c. This class checks if Java 3D is available, and displays a message if it isn't, rather than trying to start the application.*/import javax.swing.*;import java.awt.*;import java.awt.event.*;public class Life3D extends JFrame implements ActionListener{ private JButton visitButton; public Life3D(String[] args) { super("Life3D"); LifeProperties lifeProps = new LifeProperties(); Container c = getContentPane(); c.setLayout( new BorderLayout() ); if (args.length > 0 && args[0].equals("-edit")) { // view/change appl. properties Life3DConfig l3Ctrls = new Life3DConfig(lifeProps); c.add(l3Ctrls, BorderLayout.CENTER); } else if (hasJ3D()) { // start the Life3D application WrapLife3D w3d = new WrapLife3D(this, lifeProps); c.add(w3d, BorderLayout.CENTER); if (lifeProps.isFullScreen()) setUndecorated(true); // no menu bars, borders } else reportProb(c); setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); pack(); setResizable(false); // fixed size display // center this window Dimension screenDim = Toolkit.getDefaultToolkit().getScreenSize(); Dimension winDim = this.getSize(); // System.out.println("Window size: " + winDim); this.setLocation( (screenDim.width-winDim.width)/2, (screenDim.height-winDim.height)/2); setVisible(true); } // end of Life3D() private boolean hasJ3D() // check if Java 3D is available { try { // test for an essential Java 3D class Class.forName("com.sun.j3d.utils.universe.SimpleUniverse"); return true; } catch(ClassNotFoundException e) { System.err.println("Java 3D not installed"); return false; } } // end of hasJ3D() private void reportProb(Container c) /* Report the absence of Java 3D. Use a label, and a non-active button to show the Java 3D URL. (I'll make the URL active in a later version of this appl.) */ { JPanel reportPanel = new JPanel(); reportPanel.setLayout( new BoxLayout(reportPanel, BoxLayout.Y_AXIS)); // vertical c.add(reportPanel, BorderLayout.CENTER); String msgText = "<html><font size=+2>" + "Java 3D <font color=red>not</font> installed" + "</font></html>"; JLabel msgLabel = new JLabel(msgText, SwingConstants.CENTER); reportPanel.add(msgLabel); String visitText = "<html><font size=+2>" + "Visit https://java3d.dev.java.net/" + "</font></html>"; visitButton = new JButton(visitText); visitButton.addActionListener(this); reportPanel.add(visitButton); } // end of reportProb() public void actionPerformed(ActionEvent e) { if (e.getSource() == visitButton) System.out.println("Visit https://java3d.dev.java.net/"); } // end of actionPerformed// ----------------------------------------- public static void main(String[] args) { new Life3D(args); }} // end of Life3D class⌨️ 快捷键说明
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