212 lines
8.5 KiB
Java
212 lines
8.5 KiB
Java
import java.awt.Canvas;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Font;
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import java.awt.Graphics2D;
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import java.awt.Point;
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import java.awt.image.BufferStrategy;
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import java.awt.image.BufferedImage;
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import java.util.List;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.ThreadLocalRandom;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import javax.swing.JFrame;
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public final class MatrixDigitalRain {
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public static void main(String[] args) {
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EventQueue.invokeLater( () -> {
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JFrame.setDefaultLookAndFeelDecorated(true);
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JFrame frame = new JFrame("Matrix Digital Rain");
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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frame.setResizable(false);
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DigitalRain digitalRain = new DigitalRain(800, 600);
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frame.add(digitalRain);
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frame.setLocationByPlatform(true);
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frame.pack();
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frame.setVisible(true);
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digitalRain.start();
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} );
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}
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private static final class DigitalRain extends Canvas {
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public DigitalRain(int aWidth, int aHeight) {
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setPreferredSize( new Dimension(aWidth, aHeight) );
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setBackground(Color.BLACK);
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columnCount = aWidth / ( 2 * halfColumnWidth ) - 1;
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rowCount = aHeight / ( 2 * halfFontSize );
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setCursor(getToolkit().createCustomCursor(
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new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB), new Point(0, 0), "transparent"));
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executiveService = Executors.newSingleThreadExecutor();
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random = ThreadLocalRandom.current();
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}
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public void start() {
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requestFocus();
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createBufferStrategy(2);
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executiveService.execute( new DrawingCycle(rowCount) );
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}
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private final class DrawingCycle implements Runnable {
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public DrawingCycle(int rowCount) {
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columns = Stream.generate( () -> new Column(rowCount) )
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.limit(columnCount).collect(Collectors.toList());
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bufferStrategy = getBufferStrategy();
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scheduler = Executors.newSingleThreadScheduledExecutor();
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}
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@Override
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public void run() {
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scheduler.scheduleAtFixedRate( () -> { draw(); update(); }, 0, 100, TimeUnit.MILLISECONDS);
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}
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private void draw() {
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Graphics2D graphics2D = (Graphics2D) bufferStrategy.getDrawGraphics();
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graphics2D.setColor(Color.BLACK);
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graphics2D.fillRect(0, 0, getWidth(), getHeight());
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for ( int col = 0; col < columnCount; col++ ) {
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for ( int row = 0; row < rowCount; row++ ) {
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Symbol symbol = columns.get(col).symbols.get(row);
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graphics2D.setFont(symbol.font);
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graphics2D.setColor(symbol.color());
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final int size = symbol.font.getSize();
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graphics2D.drawString(
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symbol.element,
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2 * halfColumnWidth * col + halfColumnWidth + ( 6 * halfFontSize - size ) / 2,
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row * 2 * halfFontSize);
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}
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}
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graphics2D.dispose();
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bufferStrategy.show();
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}
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private void update() {
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for ( Column column : columns ) {
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if ( column.index >= 0 ) {
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String element = elements.get(random.nextInt(elements.size()));
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column.symbols.set(column.index, new Symbol(element, column.font, 255) );
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}
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column.index = Math.min(column.index + 1, rowCount);
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column.darken();
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if ( column.index == rowCount ) {
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column.reset();
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}
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}
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}
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private final List<Column> columns;
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private final BufferStrategy bufferStrategy;
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private final ScheduledExecutorService scheduler;
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} // End DrawingCycle class
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private final class Column {
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public Column(int aRowCount) {
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rowCount = aRowCount;
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index = random.nextInt(-rowCount, rowCount);
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setFont();
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symbols = Stream.generate( () -> new Symbol(font) ).limit(rowCount).collect(Collectors.toList());
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}
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public void darken() {
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symbols.stream().forEach(Symbol::darken);
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}
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public void reset() {
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index = random.nextInt(-rowCount, rowCount / 2);
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setFont();
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}
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private void setFont() {
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final int fontSize = ( random.nextInt(2) == 0 ) ?
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2 * halfFontSize : ( random.nextInt(2) == 0 ) ?
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(int) ( 1.5 * halfFontSize ) : 3 * halfFontSize;
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final int fontStyle = ( random.nextInt(3) == 0 ) ? Font.BOLD : Font.PLAIN;
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font = new Font("Dialog", fontStyle, fontSize);
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}
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private int index;
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private Font font;
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private List<Symbol> symbols;
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private final int rowCount;
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} // End Column class
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private final class Symbol {
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public Symbol(String aElement, Font aFont, int aBrightness) {
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element = aElement;
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font = aFont;
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brightness = aBrightness;
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}
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public Symbol(Font font) {
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this(" ", font, 0);
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}
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public Color color() {
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return new Color(0, 255, 0, brightness);
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}
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public void darken() {
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brightness = Math.max(0, brightness - 5);
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}
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public String toString() {
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return element;
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}
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private int brightness;
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private final Font font;
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private final String element;
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} // End Symbol class
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private final int columnCount;
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private final int rowCount;
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private final ExecutorService executiveService;
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private final int halfFontSize = 6;
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private final int halfColumnWidth = 10;
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private final ThreadLocalRandom random;
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private final List<String> elements = List.of(
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"M", "Ї", "Љ", "Њ", "Ћ", "Ќ", "Ѝ", "Ў", "Џ", "Б", "Г", "Д", "Ж", "И", "Й", "Л", "П", "Ф", "Ц", "Ч", "Ш",
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"Щ", "Ъ", "Ы", "Э", "Ю", "Я", "в", "д", "ж", "з", "и", "й", "к", "л", "м", "н", "п", "т", "ф", "ц", "ч",
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"ш", "щ", "ъ", "ы", "ь", "э", "ю", "я", "ѐ", "ё", "ђ", "ѓ", "є", "ї", "љ", "њ", "ћ", "ќ", "ѝ", "ў", "џ",
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"Ѣ", "ѣ", "ѧ", "Ѯ", "ѱ", "Ѳ", "ѳ", "ҋ", "Ҍ", "ҍ", "Ҏ", "ҏ", "Ґ", "ґ", "Ғ", "ғ", "Ҕ", "ҕ", "Җ", "җ", "Ҙ",
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"ҙ", "Қ", "қ", "ҝ", "ҟ", "ҡ", "Ң", "ң", "Ҥ", "ҥ", "ҩ", "Ҫ", "ҫ", "Ҭ", "ҭ", "Ұ", "ұ", "Ҳ", "ҳ", "ҵ", "ҷ",
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"ҹ", "Һ", "ҿ", "Ӂ", "ӂ", "Ӄ", "ӄ", "ӆ", "Ӈ", "ӈ", "ӊ", "Ӌ", "ӌ", "ӎ", "Ӑ", "ӑ", "Ӓ", "ӓ", "Ӕ", "ӕ", "Ӗ",
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"ӗ", "Ә", "ә", "Ӛ", "ӛ", "Ӝ", "ӝ", "Ӟ", "ӟ", "ӡ", "Ӣ", "ӣ", "Ӥ", "ӥ", "Ӧ", "ӧ", "Ө", "ө", "Ӫ", "ӫ", "Ӭ",
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"ӭ", "Ӯ", "ӯ", "Ӱ", "ӱ", "Ӳ", "ӳ", "Ӵ", "ӵ", "Ӷ", "ӷ", "Ӹ", "ӹ", "Ӻ", "ӽ", "ӿ", "Ԁ", "ԍ", "ԏ", "Ԑ", "ԑ",
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"ԓ", "Ԛ", "ԟ", "Ԧ", "ԧ", "Ϥ", "ϥ", "ϫ", "ϭ", "ｩ", "ｪ", "ｫ", "ｬ", "ｭ", "ｮ", "ｯ", "ｰ", "ｱ", "ｲ", "ｳ", "ｴ",
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"ｵ", "ｶ", "ｷ", "ｸ", "ｹ", "ｺ", "ｻ", "ｼ", "ｽ", "ｾ", "ｿ", "ﾀ", "ﾁ", "ﾂ", "ﾃ", "ﾄ", "ﾅ", "ﾆ", "ﾇ", "ﾈ", "ﾉ",
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"ﾊ", "ﾋ", "ﾌ", "ﾍ", "ﾎ", "ﾏ", "ﾐ", "ﾑ", "ﾒ", "ﾓ", "ﾔ", "ﾕ", "ﾖ", "ﾗ", "ﾘ", "ﾙ", "ﾚ", "ﾛ", "ﾜ", "ﾝ", "ⲁ",
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"Ⲃ", "ⲃ", "Ⲅ", "Γ", "Δ", "Θ", "Λ", "Ξ", "Π", "Ѐ", "Ё", "Ђ", "Ѓ", "Є", "ⲉ", "Ⲋ", "ⲋ", "Ⲍ", "ⲍ", "ⲏ", "ⲑ",
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"ⲓ", "ⲕ", "ⲗ", "ⲙ", "ⲛ", "Ⲝ", "ⲝ", "ⲡ", "ⲧ", "ⲩ", "ⲫ", "ⲭ", "ⲯ", "ⳁ", "Ⳉ", "ⳉ", "ⳋ", "ⳤ", "⳥", "⳦", "⳨",
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"⳩", "∀", "∁", "∂", "∃", "∄", "∅", "∆", "∇", "∈", "∉", "∊", "∋", "∌", "∍", "∎", "∏", "∐", "∑", "∓",
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"ℇ", "ℏ", "℥", "Ⅎ", "ℷ", "⩫", "⨀", "⨅", "⨆", "⨉", "⨍", "⨎", "⨏", "⨐", "⨑", "⨒", "⨓", "⨔", "⨕", "⨖",
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"⨗", "⨘", "⨙", "⨚", "⨛", "⨜", "⨝", "⨿", "⩪" );
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} // End DigitalRain class
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} // End MatrixDigitalRain class
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