Write a java program to demonstrates constructive area geometry using java
import java.awt.*;
import java.awt.event.*; import java.awt.geom.*; import java.util.*; import javax.swing.*; public class AreaTest { public static void main(String[] args) { JFrame frame = new AreaTestFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } class AreaTestFrame extends JFrame { public AreaTestFrame() { setTitle("AreaTest"); setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT); area1 = new Area(new Ellipse2D.Double(100, 100, 150, 100)); area2 = new Area(new Rectangle2D.Double(150, 150, 150, 100)); panel = new JPanel() { public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D)g; g2.draw(area1); g2.draw(area2); if (area != null) g2.fill(area); } }; add(panel, BorderLayout.CENTER); JPanel buttonPanel = new JPanel(); ButtonGroup group = new ButtonGroup(); JRadioButton addButton = new JRadioButton("Add", false); buttonPanel.add(addButton); group.add(addButton); addButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { area = new Area(); area.add(area1); area.add(area2); panel.repaint(); } }); JRadioButton subtractButton = new JRadioButton("Subtract", false); buttonPanel.add(subtractButton); group.add(subtractButton); subtractButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { area = new Area(); area.add(area1); area.subtract(area2); panel.repaint(); } }); JRadioButton intersectButton = new JRadioButton("Intersect", false); buttonPanel.add(intersectButton); group.add(intersectButton); intersectButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { area = new Area(); area.add(area1); area.intersect(area2); panel.repaint(); } }); JRadioButton exclusiveOrButton = new JRadioButton("Exclusive Or", false); buttonPanel.add(exclusiveOrButton); group.add(exclusiveOrButton); exclusiveOrButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent event) { area = new Area(); area.add(area1); area.exclusiveOr(area2); panel.repaint(); } }); add(buttonPanel, BorderLayout.NORTH); } private JPanel panel; private Area area; private Area area1; private Area area2; private static final int DEFAULT_WIDTH = 400; private static final int DEFAULT_HEIGHT = 400; } |