AnimationTester.java Source code

Introduction

Here is the source code for AnimationTester.java

Source

import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class AnimationTester {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        ArrayComponent panel = new ArrayComponent();
        frame.add(panel, BorderLayout.CENTER);

        frame.setSize(800, 300);
        frame.setVisible(true);

        Double[] values = new Double[100];
        for (int i = 0; i < values.length; i++)
            values[i] = Math.random() * panel.getHeight();

        final Sorter sorter = new Sorter(values, panel);

        Thread sorterThread = new Thread(sorter);
        sorterThread.start();
    }
}

class ArrayComponent extends JComponent {

    private Double marked1;

    private Double marked2;

    private Double[] values;

    public synchronized void paintComponent(Graphics g) {
        if (values == null)
            return;
        Graphics2D g2 = (Graphics2D) g;
        int width = getWidth() / values.length;
        for (int i = 0; i < values.length; i++) {
            Double v = values[i];
            Rectangle2D bar = new Rectangle2D.Double(width * i, 0, width, v);
            if (v == marked1 || v == marked2)
                g2.fill(bar);
            else
                g2.draw(bar);
        }
    }

    public synchronized void setValues(Double[] values, Double marked1, Double marked2) {
        this.values = (Double[]) values.clone();
        this.marked1 = marked1;
        this.marked2 = marked2;
        repaint();
    }

}

class Sorter implements Runnable {

    private Double[] values;

    private ArrayComponent panel;

    public Sorter(Double[] values, ArrayComponent panel) {
        this.values = values;
        this.panel = panel;
    }

    public void run() {
        Comparator<Double> comp = new Comparator<Double>() {
            public int compare(Double d1, Double d2) {
                try {
                    Thread.sleep(100);
                } catch (Exception exception) {
                    System.out.println(exception);
                }
                panel.setValues(values, d1, d2);
                return d1.compareTo(d2);
            }
        };
        Collections.sort(Arrays.asList(values), comp);
        panel.setValues(values, null, null);
    }
}