EAS PBO
Membuat Image Editor
Nama = Chaniyah Zulfa Mukhlishah
NRP = 05111740000115
Kelas = PBO-B
Soal =
- Gambarkan rancangan interfacenya.
- Gambarkan dan jelaskan Class Diagram penyusun dari image viewer yang akan dibuat.
- Implementasikan ke dalam program dan buat linknya.
Jawab =
- Rancangan Interface
- Class Diagram
- Explanation =
- ImageViewer: Sebagai Main Class. Image Viewer menampilkan GUI dan mengenalkan semua komponen lainnya. Seperti crop,text,rotate editor juga dimuat pada ImageViewer. Untuk menge-run pun kita membuat objek dari Class ini.
- ImageFileManager: Class untuk memuat dan menyimpan gambar dengan format gambar .jpg atau .png.
- ImagePanel: Komponen yang menampilkan OFImage. ImagePanel adalah subkelas JComponent dengan tambahan fungsi pengaturan OFImage yang akan ditampilkan pada permukaan komponen ini.
- OFImage: Mendefine gambar dalam format Objects First.
- Filter : Superclass abstrak untuk menampung semua filter gambar yang terdiri dari Darker,Treshold,Lighter,dan FishEye. Filter diterapkan ke OFImages.
- DarkerFilter: Filter untuk membuat gambar terlihat lebih gelap.
- TresholdFilter: Filter tingkat berbasis abu-abu.
- LighterFilter: Filter gambar untuk membuat gambar terlihat lebih terang.
- FishEyeFilter: Filter gambar untuk membuat efek mirip dengan lensa kamera mata ikan.
- Program
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.border.*;
import java.io.File;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class ImageViewer
{
// static fields:
private static final String VERSION = "Version 3.0";
private static JFileChooser fileChooser = new JFileChooser(System.getProperty("user.dir"));
// fields:
private JFrame frame;
private ImagePanel imagePanel;
private JLabel filenameLabel;
private JLabel statusLabel;
private JButton smallerButton;
private JButton largerButton;
private OFImage currentImage;
private List<Filter> filters;
/**
* Create an ImageViewer and display its GUI on screen.
*/
public ImageViewer()
{
currentImage = null;
filters = createFilters();
makeFrame();
}
// ---- implementation of menu functions ----
/**
* Open function: open a file chooser to select a new image file,
* and then display the chosen image.
*/
private void openFile()
{
int returnVal = fileChooser.showOpenDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return; // cancelled
}
File selectedFile = fileChooser.getSelectedFile();
currentImage = ImageFileManager.loadImage(selectedFile);
if(currentImage == null) { // image file was not a valid image
JOptionPane.showMessageDialog(frame,
"The file was not in a recognized image file format.",
"Image Load Error",
JOptionPane.ERROR_MESSAGE);
return;
}
imagePanel.setImage(currentImage);
setButtonsEnabled(true);
showFilename(selectedFile.getPath());
showStatus("File loaded.");
frame.pack();
}
/**
* Close function: close the current image.
*/
private void close()
{
currentImage = null;
imagePanel.clearImage();
showFilename(null);
setButtonsEnabled(false);
}
/**
* Save As function: save the current image to a file.
*/
private void saveAs()
{
if(currentImage != null) {
int returnVal = fileChooser.showSaveDialog(frame);
if(returnVal != JFileChooser.APPROVE_OPTION) {
return; // cancelled
}
File selectedFile = fileChooser.getSelectedFile();
ImageFileManager.saveImage(currentImage, selectedFile);
showFilename(selectedFile.getPath());
}
}
/**
* Quit function: quit the application.
*/
private void quit()
{
System.exit(0);
}
/**
* Apply a given filter to the current image.
*
* @param filter The filter object to be applied.
*/
private void applyFilter(Filter filter)
{
if(currentImage != null) {
filter.apply(currentImage);
frame.repaint();
showStatus("Applied: " + filter.getName());
}
else {
showStatus("No image loaded.");
}
}
/**
* 'About' function: show the 'about' box.
*/
private void showAbout()
{
JOptionPane.showMessageDialog(frame,
"ImageViewer\n" + VERSION,
"About ImageViewer",
JOptionPane.INFORMATION_MESSAGE);
}
/**
* Make the current picture larger.
*/
private void makeLarger()
{
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width * 2, height * 2);
// copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(x * 2, y * 2, col);
newImage.setPixel(x * 2 + 1, y * 2, col);
newImage.setPixel(x * 2, y * 2 + 1, col);
newImage.setPixel(x * 2+1, y * 2 + 1, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
/**
* Make the current picture smaller.
*/
private void makeSmaller()
{
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth() / 2;
int height = currentImage.getHeight() / 2;
OFImage newImage = new OFImage(width, height);
// copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
newImage.setPixel(x, y, currentImage.getPixel(x * 2, y * 2));
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void makeCrop()
{
if (currentImage != null)
{
int width = currentImage.getWidth();
int height = currentImage.getWidth();
int xAwal = Integer.parseInt(JOptionPane.showInputDialog("xAwal"));
int yAwal = Integer.parseInt(JOptionPane.showInputDialog("yAwal"));
int xAkhir = Integer.parseInt(JOptionPane.showInputDialog("xAkhir"));
int yAkhir = Integer.parseInt(JOptionPane.showInputDialog("yAkhir"));
OFImage newImage = new OFImage(xAkhir - xAwal, yAkhir - yAwal);
for (int y = 0; y < yAkhir - yAwal; y++)
{
for (int x = 0; x < xAkhir - xAwal; x++)
{
newImage.setPixel(x, y, currentImage.getPixel(x + xAwal, y + yAwal));
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void makeText()
{
JTextField xField = new JTextField(5);
JTextField yField = new JTextField(5);
JTextField zField = new JTextField(5);
JPanel myPanel = new JPanel();
myPanel.add(new JLabel("R"));
myPanel.add(xField);
myPanel.add(Box.createVerticalStrut(15)); // a spacer
myPanel.add(new JLabel("G"));
myPanel.add(yField);
myPanel.add(Box.createVerticalStrut(15)); // a spacer
myPanel.add(new JLabel("B"));
myPanel.add(zField);
if(currentImage != null) {
int width = currentImage.getWidth();
int height = currentImage.getHeight();
int xPosition = Integer.parseInt(JOptionPane.showInputDialog("Posisi X"));
int yPosition = Integer.parseInt(JOptionPane.showInputDialog("Posisi Y"));
float fontSize = Float.parseFloat(JOptionPane.showInputDialog("Ukuran font"));
String addText = JOptionPane.showInputDialog("Tuliskan sesuatu...");
int result = JOptionPane.showConfirmDialog(null, myPanel, "Warna font", JOptionPane.OK_CANCEL_OPTION);
OFImage newImage = new OFImage(width, height);
// copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(x, y, col);
}
}
int r = Integer.parseInt(xField.getText());
int gr = Integer.parseInt(yField.getText());
int b = Integer.parseInt(zField.getText());
Color c = new Color(r,gr,b);
Graphics g = newImage.getGraphics();
g.setFont(g.getFont().deriveFont(fontSize));
g.setColor(c);
g.drawString(addText, xPosition, yPosition);
g.dispose();
currentImage = newImage;
imagePanel.setImage(currentImage);
}
}
private void Rotate180() {
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(width, height);
//copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(width-x-1, height-y-1);
newImage.setPixel(x, y, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void Rotate90left() {
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
//copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(y, width-x-1, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
private void Rotate90right() {
if(currentImage != null) {
// create new image with double size
int width = currentImage.getWidth();
int height = currentImage.getHeight();
OFImage newImage = new OFImage(height, width);
//copy pixel data into new image
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color col = currentImage.getPixel(x, y);
newImage.setPixel(height-y-1, x, col);
}
}
currentImage = newImage;
imagePanel.setImage(currentImage);
frame.pack();
}
}
// ---- support methods ----
/**
* Show the file name of the current image in the fils display label.
* 'null' may be used as a parameter if no file is currently loaded.
*
* @param filename The file name to be displayed, or null for 'no file'.
*/
private void showFilename(String filename)
{
if(filename == null) {
filenameLabel.setText("No file displayed.");
}
else {
filenameLabel.setText("File: " + filename);
}
}
/**
* Show a message in the status bar at the bottom of the screen.
* @param text The message to be displayed.
*/
private void showStatus(String text)
{
statusLabel.setText(text);
}
/**
* Enable or disable all toolbar buttons.
*
* @param status 'true' to enable the buttons, 'false' to disable.
*/
private void setButtonsEnabled(boolean status)
{
smallerButton.setEnabled(status);
largerButton.setEnabled(status);
}
/**
* Create a list with all the known filters.
* @return The list of filters.
*/
private List<Filter> createFilters()
{
List<Filter> filterList = new ArrayList<Filter>();
filterList.add(new DarkerFilter("Darker"));
filterList.add(new LighterFilter("Lighter"));
filterList.add(new ThresholdFilter("Threshold"));
filterList.add(new FishEyeFilter("Fish Eye"));
return filterList;
}
// ---- swing stuff to build the frame and all its components ----
/**
* Create the Swing frame and its content.
*/
private void makeFrame()
{
frame = new JFrame("ImageViewer");
JPanel contentPane = (JPanel)frame.getContentPane();
contentPane.setBorder(new EmptyBorder(6, 6, 6, 6));
makeMenuBar(frame);
// Specify the layout manager with nice spacing
contentPane.setLayout(new BorderLayout(6, 6));
// Create the image pane in the center
imagePanel = new ImagePanel();
imagePanel.setBorder(new EtchedBorder());
contentPane.add(imagePanel, BorderLayout.CENTER);
// Create two labels at top and bottom for the file name and status message
filenameLabel = new JLabel();
contentPane.add(filenameLabel, BorderLayout.NORTH);
statusLabel = new JLabel(VERSION);
contentPane.add(statusLabel, BorderLayout.SOUTH);
// Create the toolbar with the buttons
JPanel toolbar = new JPanel();
toolbar.setLayout(new GridLayout(0, 1));
smallerButton = new JButton("Smaller");
smallerButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeSmaller();}
});
toolbar.add(smallerButton);
largerButton = new JButton("Larger");
largerButton.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeLarger();}
});
toolbar.add(largerButton);
// Add toolbar into panel with flow layout for spacing
JPanel flow = new JPanel();
flow.add(toolbar);
contentPane.add(flow, BorderLayout.WEST);
// building is done - arrange the components
showFilename(null);
setButtonsEnabled(false);
frame.pack();
// place the frame at the center of the screen and show
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);
frame.setVisible(true);
}
/**
* Create the main frame's menu bar.
*
* @param frame The frame that the menu bar should be added to.
*/
private void makeMenuBar(JFrame frame)
{
final int SHORTCUT_MASK =
Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
JMenuBar menubar = new JMenuBar();
frame.setJMenuBar(menubar);
JMenu menu;
JMenuItem item;
// create the File menu
menu = new JMenu("File");
menubar.add(menu);
item = new JMenuItem("Open...");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { openFile(); }
});
menu.add(item);
item = new JMenuItem("Close");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_W, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { close(); }
});
menu.add(item);
menu.addSeparator();
item = new JMenuItem("Save As...");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { saveAs(); }
});
menu.add(item);
menu.addSeparator();
item = new JMenuItem("Quit");
item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q, SHORTCUT_MASK));
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { quit(); }
});
menu.add(item);
// create the Filter menu
menu = new JMenu("Filter");
menubar.add(menu);
for(final Filter filter : filters) {
item = new JMenuItem(filter.getName());
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
applyFilter(filter);
}
});
menu.add(item);
}
menu = new JMenu("Crop");
menubar.add(menu);
item = new JMenuItem("Crop Image");
item.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeCrop(); }
});
menu.add(item);
menu = new JMenu("Text");
menubar.add(menu);
item = new JMenuItem("Add Text");
item.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e) { makeText(); }
});
menu.add(item);
menu = new JMenu("Rotate");
menubar.add(menu);
item = new JMenuItem("Rotate 180");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate180(); }
});
menu.add(item);
item = new JMenuItem("Rotate 90 Left");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90left(); }
});
menu.add(item);
item = new JMenuItem("Rotate 90 Right");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { Rotate90right(); }
});
menu.add(item);
// create the Help menu
menu = new JMenu("Help");
menubar.add(menu);
item = new JMenuItem("About ImageViewer...");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { showAbout(); }
});
menu.add(item);
}
}
- Class ImageFileManager
import java.awt.image.*;
import javax.imageio.*;
import java.io.*;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class ImageFileManager
{
// A constant for the image format that this writer uses for writing.
// Available formats are "jpg" and "png".
private static final String IMAGE_FORMAT = "jpg";
/**
* Read an image file from disk and return it as an image. This method
* can read JPG and PNG file formats. In case of any problem (e.g the file
* does not exist, is in an undecodable format, or any other read error)
* this method returns null.
*
* @param imageFile The image file to be loaded.
* @return The image object or null is it could not be read.
*/
public static OFImage loadImage(File imageFile)
{
try {
BufferedImage image = ImageIO.read(imageFile);
if(image == null || (image.getWidth(null) < 0)) {
// we could not load the image - probably invalid file format
return null;
}
return new OFImage(image);
}
catch(IOException exc) {
return null;
}
}
/**
* Write an image file to disk. The file format is JPG. In case of any
* problem the method just silently returns.
*
* @param image The image to be saved.
* @param file The file to save to.
*/
public static void saveImage(OFImage image, File file)
{
try {
ImageIO.write(image, IMAGE_FORMAT, file);
}
catch(IOException exc) {
return;
}
}
}
- Class ImagePlanel
import java.awt.*;
import javax.swing.*;
import java.awt.image.*;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class ImagePanel extends JComponent
{
// The current width and height of this panel
private int width, height;
// An internal image buffer that is used for painting. For
// actual display, this image buffer is then copied to screen.
private OFImage panelImage;
/**
* Create a new, empty ImagePanel.
*/
public ImagePanel()
{
width = 360; // arbitrary size for empty panel
height = 240;
panelImage = null;
}
/**
* Set the image that this panel should show.
*
* @param image The image to be displayed.
*/
public void setImage(OFImage image)
{
if(image != null) {
width = image.getWidth();
height = image.getHeight();
panelImage = image;
repaint();
}
}
/**
* Clear the image on this panel.
*/
public void clearImage()
{
Graphics imageGraphics = panelImage.getGraphics();
imageGraphics.setColor(Color.LIGHT_GRAY);
imageGraphics.fillRect(0, 0, width, height);
repaint();
}
// The following methods are redefinitions of methods
// inherited from superclasses.
/**
* Tell the layout manager how big we would like to be.
* (This method gets called by layout managers for placing
* the components.)
*
* @return The preferred dimension for this component.
*/
public Dimension getPreferredSize()
{
return new Dimension(width, height);
}
/**
* This component needs to be redisplayed. Copy the internal image
* to screen. (This method gets called by the Swing screen painter
* every time it want this component displayed.)
*
* @param g The graphics context that can be used to draw on this component.
*/
public void paintComponent(Graphics g)
{
Dimension size = getSize();
g.clearRect(0, 0, size.width, size.height);
if(panelImage != null) {
g.drawImage(panelImage, 0, 0, null);
}
}
}
- Class OFImage
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class OFImage extends BufferedImage
{
/**
* Create an OFImage copied from a BufferedImage.
* @param image The image to copy.
*/
public OFImage(BufferedImage image)
{
super(image.getColorModel(), image.copyData(null),
image.isAlphaPremultiplied(), null);
}
/**
* Create an OFImage with specified size and unspecified content.
* @param width The width of the image.
* @param height The height of the image.
*/
public OFImage(int width, int height)
{
super(width, height, TYPE_INT_RGB);
}
/**
* Set a given pixel of this image to a specified color. The
* color is represented as an (r,g,b) value.
* @param x The x position of the pixel.
* @param y The y position of the pixel.
* @param col The color of the pixel.
*/
public void setPixel(int x, int y, Color col)
{
int pixel = col.getRGB();
setRGB(x, y, pixel);
}
/**
* Get the color value at a specified pixel position.
* @param x The x position of the pixel.
* @param y The y position of the pixel.
* @return The color of the pixel at the given position.
*/
public Color getPixel(int x, int y)
{
int pixel = getRGB(x, y);
return new Color(pixel);
}
}
- Class Filter
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public abstract class Filter
{
private String name;
/**
* Create a new filter with a given name.
* @param name The name of the filter.
*/
public Filter(String name)
{
this.name = name;
}
/**
* Return the name of this filter.
*
* @return The name of this filter.
*/
public String getName()
{
return name;
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public abstract void apply(OFImage image);
} - Class LighterFilter
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class LighterFilter extends Filter
{
/**
* Constructor for objects of class LighterFilter.
* @param name The name of the filter.
*/
public LighterFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, image.getPixel(x, y).brighter());
}
}
}
}
- Class FishEyeFilter
import java.awt.Color;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class FishEyeFilter extends Filter
{
// constants:
private final static int SCALE = 20; // this defines the strenght of the filter
private final static double TWO_PI = 2 * Math.PI;
/**
* Constructor for objects of class LensFilter.
* @param name The name of the filter.
*/
public FishEyeFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
OFImage original = new OFImage(image);
int[] xa = computeXArray(width);
int[] ya = computeYArray(height);
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, original.getPixel(x + xa[x], y + ya[y]));
}
}
}
/**
* Compute and return an array of horizontal offsets for each pixel column.
* These can then be applied as the horizontal offset for each pixel.
*/
private int[] computeXArray(int width)
{
int[] xArray = new int[width];
for(int i=0; i < width; i++) {
xArray[i] = (int)(Math.sin( ((double)i / width) * TWO_PI) * SCALE);
}
return xArray;
}
/**
* Compute and return an array of vertical offsets for each pixel row.
* These can then be applied as the vertical offset for each pixel.
*/
private int[] computeYArray(int height)
{
int[] yArray = new int[height];
for(int i=0; i < height; i++) {
yArray[i] = (int)(Math.sin( ((double)i / height) * TWO_PI) * SCALE);
}
return yArray;
}
}
- Class ThresholdFilter
import java.awt.Color;
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class ThresholdFilter extends Filter
{
/**
* Constructor for objects of class ThresholdFilter.
* @param name The name of the filter.
*/
public ThresholdFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
Color pixel = image.getPixel(x, y);
int brightness = (pixel.getRed() + pixel.getBlue() + pixel.getGreen()) / 3;
if(brightness <= 85) {
image.setPixel(x, y, Color.BLACK);
}
else if(brightness <= 170) {
image.setPixel(x, y, Color.GRAY);
}
else {
image.setPixel(x, y, Color.WHITE);
}
}
}
}
}
- Class DarkFilter
/**
* Chaniyah Zulfa Mukhlishah
* 10-Des-18
*/
public class DarkerFilter extends Filter
{
/**
* Constructor for objects of class DarkerFilter.
* @param name The name of the filter.
*/
public DarkerFilter(String name)
{
super(name);
}
/**
* Apply this filter to an image.
*
* @param image The image to be changed by this filter.
*/
public void apply(OFImage image)
{
int height = image.getHeight();
int width = image.getWidth();
for(int y = 0; y < height; y++) {
for(int x = 0; x < width; x++) {
image.setPixel(x, y, image.getPixel(x, y).darker());
}
}
}
}
Thanks All, semoga bermanfaat :))
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