add the possiblity to compare an image with another in the imagePnale popupMenu

src/mustic/gui/ROIToolsFrame.java

@@ -127,7 +127,7 @@ public class ROIToolsFrame extends JInternalFrame implements ActionListener {
 	private Vector<RegionOfInterest> rois;
 
 	/** Needed for the modification of the transparency */
-	private int sliderValue = (int) ImagePanel.transparency;
+	private int sliderValue = (int) ImagePanel.drawingTransparency;
 
 	/**
 	 * Create the interface of the module.
@@ -618,7 +618,7 @@ public class ROIToolsFrame extends JInternalFrame implements ActionListener {
 
 		JPanel jp_main = new JPanel(new BorderLayout());
 		int answer;
-		float currentTransparency = ImagePanel.transparency;
+		float currentTransparency = ImagePanel.drawingTransparency;
 
 		JSlider js_transparency = new JSlider(SwingConstants.HORIZONTAL, 0,
 				100, 50);

src/mustic/gui/dialog/classifier/ConstraintsSelectionDialog.java

@@ -811,80 +811,80 @@ public class ConstraintsSelectionDialog extends JInternalFrame implements Zoomab
 			return;
 		}
 
-		this.viewer = new PyramidImageViewer(img.getFilename(), true);
-
-//		if (this.image != null && !this.image.getPath().equals(img.getPath()))
-//			this.clear();
-//		this.width = img.getWidth();
-//		this.imageSource = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_INT_RGB);
-//		this.imagePoints = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_INT_RGB);
-//
-//		double data[][][] = img.load(0, 0, img.getWidth(), img.getHeight());
-//		double[] max = new double[data.length];
-//		double[] min = new double[data.length];
-//
-//		// for each band
-//		for (int i = 0; i < data.length; i++) {
-//			max[i] = min[i] = data[i][0][0];
-//			// for each column
-//			for (int x = 0; x < data[i].length; x++) {
-//				// for each line
-//				for (int y = 0; y < data[i][x].length; y++) {
-//					// searching the max and min value of the band
-//					max[i] = Math.max(max[i], data[i][x][y]);
-//					min[i] = Math.min(min[i], data[i][x][y]);
-//				}
-//			}
-//		}
-//		short[][][] dataView = new short[data.length][data[0]
-//				.length][data[0][0].length]; // the values to display
-//		double values[][] = data[0];
-//		/*
-//		 * max contains the max value for r g b, we can create a valid
-//		 * representation of data. the data values must be between 0 and 255 to
-//		 * be valid, so let's convert them if needed
-//		 */
-//
-//		int[] bands = new int[3];
-//		bands[0] = img.r;
-//		bands[1] = img.g;
-//		bands[2] = img.b;
-//
-//		// we use at most 3 bands
-//		int nbUsedBand = img.getNbBands();
-//		if (nbUsedBand > 3) {
-//			nbUsedBand = 3;
-//		}
-//		for (int b = 0; b < nbUsedBand; b++) {
-//			int i = bands[b];
-//			for (int x = 0; x < data[0].length; x++) {
-//				for (int y = 0; y < data[0][0].length; y++) {
-//					if (data[i][x][y] > 0) {
-//						// convert only if needed to avoid color deformation on
-//						// 8 bits images
-//						if (max[i] <= 255 && min[b] >= 0) {
-//							dataView[i][x][y] = (short) data[b][x][y];
-//						} else {
-//							dataView[i][x][y] = (short) (255 * 
-//									(data[i][x][y] - min[b]) / (max[b] - min[b]));
-//						}
-//					} else {
-//						dataView[i][x][y] = 0;
-//					}
-//				}
-//			}
-//		}
-//		// pixels of the image to display
-//		for (int x = 0; x < values.length; x++) {
-//			for (int y = 0; y < values[0].length; y++) {
-//
-//				int pixel = (int) values[x][y] << 24 | dataView[bands[0]][x][y] << 16 
-//						| dataView[bands[1]][x][y] << 8 | dataView[bands[2]][x][y];
-//
-//				imageSource.setRGB(x, y, pixel);
-//				imagePoints.setRGB(x, y, pixel);
-//			}
-//		}
+//		this.viewer = new PyramidImageViewer(img.getFilename(), true);
+
+		if (this.image != null && !this.image.getPath().equals(img.getPath()))
+			this.clear();
+		this.width = img.getWidth();
+		this.imageSource = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_INT_RGB);
+		this.imagePoints = new BufferedImage(img.getWidth(), img.getHeight(), BufferedImage.TYPE_INT_RGB);
+
+		double data[][][] = img.load(0, 0, img.getWidth(), img.getHeight());
+		double[] max = new double[data.length];
+		double[] min = new double[data.length];
+
+		// for each band
+		for (int i = 0; i < data.length; i++) {
+			max[i] = min[i] = data[i][0][0];
+			// for each column
+			for (int x = 0; x < data[i].length; x++) {
+				// for each line
+				for (int y = 0; y < data[i][x].length; y++) {
+					// searching the max and min value of the band
+					max[i] = Math.max(max[i], data[i][x][y]);
+					min[i] = Math.min(min[i], data[i][x][y]);
+				}
+			}
+		}
+		short[][][] dataView = new short[data.length][data[0]
+				.length][data[0][0].length]; // the values to display
+		double values[][] = data[0];
+		/*
+		 * max contains the max value for r g b, we can create a valid
+		 * representation of data. the data values must be between 0 and 255 to
+		 * be valid, so let's convert them if needed
+		 */
+
+		int[] bands = new int[3];
+		bands[0] = img.r;
+		bands[1] = img.g;
+		bands[2] = img.b;
+
+		// we use at most 3 bands
+		int nbUsedBand = img.getNbBands();
+		if (nbUsedBand > 3) {
+			nbUsedBand = 3;
+		}
+		for (int b = 0; b < nbUsedBand; b++) {
+			int i = bands[b];
+			for (int x = 0; x < data[0].length; x++) {
+				for (int y = 0; y < data[0][0].length; y++) {
+					if (data[i][x][y] > 0) {
+						// convert only if needed to avoid color deformation on
+						// 8 bits images
+						if (max[i] <= 255 && min[b] >= 0) {
+							dataView[i][x][y] = (short) data[b][x][y];
+						} else {
+							dataView[i][x][y] = (short) (255 * 
+									(data[i][x][y] - min[b]) / (max[b] - min[b]));
+						}
+					} else {
+						dataView[i][x][y] = 0;
+					}
+				}
+			}
+		}
+		// pixels of the image to display
+		for (int x = 0; x < values.length; x++) {
+			for (int y = 0; y < values[0].length; y++) {
+
+				int pixel = (int) values[x][y] << 24 | dataView[bands[0]][x][y] << 16 
+						| dataView[bands[1]][x][y] << 8 | dataView[bands[2]][x][y];
+
+				imageSource.setRGB(x, y, pixel);
+				imagePoints.setRGB(x, y, pixel);
+			}
+		}
 
 		this.image = img;
 		doZoomedOp();

src/mustic/gui/dialog/classifier/ConstraintsSelectionInternalFrame.java

@@ -10,6 +10,7 @@ import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.GridLayout;
 import java.awt.Image;
+import java.awt.Point;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
@@ -171,6 +172,7 @@ public class ConstraintsSelectionInternalFrame extends JDialog {
 	public ConstraintsSelectionInternalFrame(ImagePanel imagePanel, Data data) {
 		super();
 		mainPanel = new JPanel(new BorderLayout());
+		this.imagePanel = imagePanel;
 
 		if (data != null) {
 			// case of Data provided
@@ -179,11 +181,12 @@ public class ConstraintsSelectionInternalFrame extends JDialog {
 			this.data = data;
 		} else {
 			// otherwise we base our estimation on the image
-			StreamedImageReaderWrapper reader = new StreamedImageReaderWrapper(imagePanel.getRawImage().getPath());
 			minDistance = 0;
 			maxDistance = 0;
-			for (int i = 0 ; i < reader.getMaxValues().length ; i++) {
-				double d = (reader.getMaxValues()[i] - reader.getMinValues()[i]);
+			
+			for (int i = 0 ; i < imagePanel.getRawImage().getMaxValues().length ; i++) {
+				double d = (imagePanel.getRawImage().getMaxValues()[i] 
+							- imagePanel.getRawImage().getMinValues()[i]);
 				maxDistance += d*d; 
 			}
 			maxDistance = Math.sqrt(maxDistance);
@@ -306,22 +309,23 @@ public class ConstraintsSelectionInternalFrame extends JDialog {
 			public void mouseClicked(MouseEvent e) {
 				if (imagePanel.getDisplayedImage() != null) {				
 					// point coordinates relative to img 
-					int x = (int) ((e.getX()
-							- (int) ((displayPanel.getWidth() - (mNew.getWidth())) / 2.0)) / mZoomRate);
-					int y = (int) ((e.getY()
-							- (int) ((displayPanel.getHeight() - (mNew.getHeight())) / 2.0)) / mZoomRate);
-
-					if (x >= 0 && y >= 0 && x < imageSource.getWidth() * mZoomRate
-							&& y < imageSource.getHeight() /* mZoomRate*/) {
+//					int x = (int) ((e.getX()
+//							- (int) ((displayPanel.getWidth() - (mNew.getWidth())) / 2.0)) / mZoomRate);
+//					int y = (int) ((e.getY()
+//							- (int) ((displayPanel.getHeight() - (mNew.getHeight())) / 2.0)) / mZoomRate);
+					Point p = imagePanel.converteCoordinatesToImage(e.getX(), e.getY());
+
+					if (p.x >= 0 && p.y >= 0 && p.x < imagePanel.getRawImage().getWidth()
+							&& p.y < imagePanel.getRawImage().getHeight() /* mZoomRate*/) {
 						switch (currentStep) {
 						case MustLink_step1:
 						case CannotLink_step1:
 						case Label_step1:
-							addFirstPixel(x, y);
+							addFirstPixel(p.x, p.y);
 							break;
 						case MustLink_step2:
 						case CannotLink_step2:
-							addSecondPixel(x, y);
+							addSecondPixel(p.x, p.y);
 							break;
 						default:
 							// we don't refresh if not a valid step

src/mustic/gui/panels/ImagePanel.java

@@ -11,6 +11,7 @@ import jcl.data.mask.Mask;
 import mustic.gui.*;
 import mustic.io.RawImage;
 import mustic.io.roi.RegionOfInterest;
+import mustic.utils.filters.ImageFileFilter;
 import mustic.utils.filters.ZipFileFilter;
 import mustic.utils.image.BufferedImageHelper;
 import mustic.utils.image.BufferedImageViewer;
@@ -28,7 +29,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 	private static final long		serialVersionUID			= 1L;
 
 	/** The transparency must be between 0.0 and 1.0 */
-	public static float				transparency				= new Float(0.50);
+	public static float				drawingTransparency			= new Float(0.50);
 
 
 	protected JMenuItem				classifyAll					= null;
@@ -63,6 +64,21 @@ public class ImagePanel extends JPanel implements Zoomable {
 
 	/** zoom step */
 	private float	                mZoomStep	    			= 0.7f;
+	
+	/** transparency level */
+	private float					transparencyStep			= 0.03f;
+	
+	/**	transparency of the image */
+	private float					transparency				= 1;
+
+	/** test if T key is pressed for transparency */
+	private boolean					keyTPressed					= false;
+	
+	/** test if Y key is pressed for compared image transparency */
+	private boolean					keyYPressed					= false;
+	
+	/** transparency of the compared image */
+	private float					comparedImageTransparency	= 0.5f;
 
 	private ClassList	            pl_label					= null;
 	
@@ -78,6 +94,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 	/** Attributes to draw elements on the screen */
 	private Point					clickedPoint				= null;
 	
+	
 
 	/**
 	 * Create a new ImagePanel from a BufferedImage.
@@ -178,6 +195,24 @@ public class ImagePanel extends JPanel implements Zoomable {
 						displayPanel.decreaseZoomBoxArea();
 					}	
 				}
+				// transparency of the image
+				else if(keyTPressed) {
+					if (e.getUnitsToScroll() > 0) {
+						transparency += transparencyStep;
+					} else {
+						transparency -= transparencyStep;
+					}
+					transparencyChanged();
+				}
+				// transparency of the compared image
+				else if(keyYPressed) {
+					if (e.getUnitsToScroll() > 0) {
+						comparedImageTransparency += transparencyStep;
+					} else {
+						comparedImageTransparency -= transparencyStep;
+					}
+					transparencyChanged();
+				}
 				// zoom in image
 				else {	
 					if (e.getUnitsToScroll() > 0) {
@@ -194,12 +229,14 @@ public class ImagePanel extends JPanel implements Zoomable {
 		JMenuItem menuROI = new JMenuItem("ROI tools...");
 		JMenuItem menuResult = new JMenuItem("Open result...");
 		JMenuItem menuInfo = new JMenuItem("Image properties...");
+		JMenuItem menuCompare = new JMenuItem("Compare with image...");
 		JMenuItem menuClose = new JMenuItem("Close");
 
 		popupMenu.add(menuSeg);
 		popupMenu.add(menuROI);
 		popupMenu.add(menuResult);
 		popupMenu.add(menuInfo);
+		popupMenu.add(menuCompare);
 		popupMenu.add(menuClose);
 
 		this.displayPanel.addMouseListener(new MouseAdapter() {
@@ -270,6 +307,13 @@ public class ImagePanel extends JPanel implements Zoomable {
 			}
 		});
 		
+		menuCompare.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				openComparedImage();
+			}
+		});
+		
 		displayPanel.addComponentListener(new ComponentListener() {
 			@Override
 			public void componentResized(ComponentEvent e) {
@@ -337,20 +381,88 @@ public class ImagePanel extends JPanel implements Zoomable {
 				if(e.getKeyCode() == KeyEvent.VK_H) {
 					//TODO add 
 				}
+				
+				// for transparency
+				if(e.getKeyCode() == KeyEvent.VK_T) {
+					keyTPressed = true;
+				}
+				
+				// for compared image transparency
+				if(e.getKeyCode() == KeyEvent.VK_Y) {
+					keyYPressed = true;
+				}
 
 			}
 
 			@Override
 			public void keyReleased(KeyEvent e) {
 
+				// for transparency
+				if(e.getKeyCode() == KeyEvent.VK_T) {
+					keyTPressed = false;
+				}
+				
+				// for compared image transparency
+				if(e.getKeyCode() == KeyEvent.VK_Y) {
+					keyYPressed = false;
+				}
 			}
 
 		});
 		this.displayPanel.setFocusable(true);
 	}
 
+	/**
+	 * Notify the viewer that the transparency has changed
+	 */
+	private void transparencyChanged() {
+		if (transparency > 1) {
+			transparency = 1;
+		}
+		if (transparency < 0) {
+			transparency = 0;
+		}
+		
+		if (comparedImageTransparency > 1) {
+			comparedImageTransparency = 1;
+		}
+		if (comparedImageTransparency < 0) {
+			comparedImageTransparency = 0;
+		}
+		viewer.adjustTransparency(transparency, comparedImageTransparency);
+		displayPanel.repaint();
+	}
+
+	private void openComparedImage() {
+		JFileChooser fileChooser;
+
+		if (MainFrame.getInstance().getCurrentDirectory() == null) {
+			fileChooser = new JFileChooser();
+			MainFrame.getInstance().setCurrentDirectory(fileChooser.getCurrentDirectory());
+		}
+		else {
+			fileChooser = new JFileChooser(MainFrame.getInstance().getCurrentDirectory());
+		}
+		ImageFileFilter filter = new ImageFileFilter();
+		fileChooser.addChoosableFileFilter(filter);
+		fileChooser.setFileFilter(filter);
+		fileChooser.setAcceptAllFileFilterUsed(true);
+		fileChooser.setMultiSelectionEnabled(false);
+
+		int returnVal = fileChooser.showOpenDialog(this);
+
+		if (returnVal == JFileChooser.APPROVE_OPTION) {
+			MainFrame.getProgressStatus().setMessage("loading file...");
+			this.setCursor(new java.awt.Cursor(java.awt.Cursor.WAIT_CURSOR));
+			viewer.addComparedImage(new RawImage(fileChooser.getSelectedFile()));
+			this.session.getBirdViewPanel().syncImage();
+		}
+		this.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
+		MainFrame.getProgressStatus().reset();
+	}
+
 	public static void setNewTransparency(float nT) {
-		ImagePanel.transparency = nT;
+		ImagePanel.drawingTransparency = nT;
 	}
 
 	private void applyMask() {
@@ -377,7 +489,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 		/** Initialise the transparency */
 		float[] compo = new float[4];
 		c.getColorComponents(compo);
-		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.transparency);
+		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.drawingTransparency);
 
 		Graphics g = img.getGraphics();
 		g.setColor(clr);
@@ -401,7 +513,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 		/** Initialise the transparency */
 		float[] compo = new float[4];
 		c.getColorComponents(compo);
-		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.transparency);
+		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.drawingTransparency);
 
 		g.setColor(clr);
 		g.drawLine(x, y, x1, y1);
@@ -454,7 +566,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 		/** Initialise the transparency */
 		float[] compo = new float[4];
 		c.getColorComponents(compo);
-		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.transparency);
+		Color clr = new Color(c.getColorSpace(), compo, ImagePanel.drawingTransparency);
 
 		Graphics g = img.getGraphics();
 		g.setColor(clr);
@@ -593,7 +705,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 
 				/** Initialise the transparency */
 				compo = c.getColorComponents(compo);
-				c = new Color(c.getColorSpace(), compo, ImagePanel.transparency);
+				c = new Color(c.getColorSpace(), compo, ImagePanel.drawingTransparency);
 
 				g.setColor(c);
 
@@ -1048,7 +1160,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 	 * 			x coordinate of the pixel in the image
 	 * @return coordinate in the screen
 	 */
-	private Point converteCoordinatesToScreen(int x, int y) {
+	public Point converteCoordinatesToScreen(int x, int y) {
 		int sx = (int) ((x - currentTopLeft.x) * getZoomRate());
 		int sy = (int) ((y - currentTopLeft.y) * getZoomRate());
 		return new Point(sx, sy);
@@ -1062,7 +1174,7 @@ public class ImagePanel extends JPanel implements Zoomable {
 	 * 			x coordinate of the pixel in the screen
 	 * @return coordinate in the image
 	 */
-	private Point converteCoordinatesToImage(int x, int y) {
+	public Point converteCoordinatesToImage(int x, int y) {
 		int sx = (int) (x / getZoomRate()) + currentTopLeft.x;
 		int sy = (int) (y / getZoomRate()) + currentTopLeft.y;
 		return new Point(sx, sy);

src/mustic/utils/image/BufferedImageHelper.java

@@ -244,22 +244,53 @@ public class BufferedImageHelper {
 	 * 			the first image
 	 * @param image2
 	 * 			the second image
+	 * @param transparency1
+	 * 			transparency to apply to image 1
+	 * @param transparency2
+	 * 			transparency to apply to image 2
 	 * @return the average of image1 and image2
-	 */
-	public static BufferedImage averagedBufferedImage(BufferedImage image1, BufferedImage image2) {
+y	 */
+	public static BufferedImage averagedBufferedImage(BufferedImage image1, BufferedImage image2,
+							float transparency1, float transparency2) {
 		if (image1.getHeight() != image2.getHeight() ||
 			image1.getWidth() != image2.getWidth()) {
-			throw new IndexOutOfBoundsException("the BufferedImage shouyld have the same dimensions");
+			throw new IndexOutOfBoundsException("the BufferedImage should have the same dimensions");
 		}
 		BufferedImage result = new BufferedImage(image1.getWidth(), image1.getHeight(),
 				BufferedImage.TYPE_INT_RGB);
+		float averageFactor = transparency1 + transparency2;
 		for(int x = 0 ; x < image1.getWidth() ; x++) {
 			for(int y = 0 ; y < image1.getHeight() ; y++) {
 				Color c1 = new Color(image1.getRGB(x, y));
 				Color c2 = new Color(image2.getRGB(x, y));
-				Color c = new Color((c1.getRed()+c2.getRed())/2, 
-									(c1.getGreen()+c2.getGreen())/2,
-									(c1.getBlue()+c2.getBlue())/2);
+				Color c = new Color((int) ((c1.getRed()   * transparency1 + c2.getRed()   * transparency2) / averageFactor), 
+									(int) ((c1.getGreen() * transparency1 + c2.getGreen() * transparency2) / averageFactor),
+									(int) ((c1.getBlue()  * transparency1 + c2.getBlue()  * transparency2) / averageFactor));
+				result.setRGB(x, y, c.getRGB());
+			}
+		}
+		
+		return result;
+	}
+	
+	/**
+	 * Create a new BufferedImage corresponding to an image with a transparency factor
+	 * 
+	 * @param image
+	 * 			the origin image
+	 * @param transparency
+	 * 			the transparency factor
+	 * @return the image with transparency applied
+	 */
+	public static BufferedImage applyTransparency(BufferedImage image, float transparency) {
+		BufferedImage result = new BufferedImage(image.getWidth(), image.getHeight(),
+				BufferedImage.TYPE_INT_RGB);
+		for(int x = 0 ; x < image.getWidth() ; x++) {
+			for(int y = 0 ; y < image.getHeight() ; y++) {
+				Color c2 = new Color(image.getRGB(x, y));
+				Color c = new Color((int) (c2.getRed()   * transparency), 
+									(int) (c2.getGreen() * transparency),
+									(int) (c2.getBlue()  * transparency));
 				result.setRGB(x, y, c.getRGB());
 			}
 		}

src/mustic/utils/image/BufferedImageViewer.java

@@ -253,16 +253,21 @@ public class BufferedImageViewer extends ImageViewer {
 		screen = op.filter(screen, null);
 		//mScreenImage = op.filter(this.mScreenImage, null).getSubimage(0, 0, width, height); 
 		
+		if (comparedImage == null) {
+			screen = BufferedImageHelper.applyTransparency(screen, transparency);
+		}
+		
 		if (saved) {
 			realX = x;
 			realY = y;
 			mScreenImage = screen;
 		}
-		
+
 		if (comparedImage != null) {
 			BufferedImage scr2 = comparedImage.getScreenImage(x, y, width, height, zoomRate, saved);
-			return BufferedImageHelper.averagedBufferedImage(screen, scr2);
-		}
+			return BufferedImageHelper.averagedBufferedImage(screen, scr2,
+					transparency, comparedImageTransparency);
+		} 
 		
 		return screen;
 	}
@@ -271,7 +276,8 @@ public class BufferedImageViewer extends ImageViewer {
 	public BufferedImage getScreenImage() {
 		if (comparedImage != null) {
 			BufferedImage scr2 = comparedImage.getScreenImage();
-			return BufferedImageHelper.averagedBufferedImage(mScreenImage, scr2);
+			return BufferedImageHelper.averagedBufferedImage(mScreenImage, scr2,
+					transparency, comparedImageTransparency);
 		}
 		
 		return mScreenImage;

src/mustic/utils/image/ImageViewer.java

@@ -178,8 +178,33 @@ public abstract class ImageViewer {
 		this.maxValues = maxValues;
 	}
 	
-	public void adjustTransparency(float firstImage, float secondImage) {
+	/**
+	 * Change the transparency level for each image.
+	 * If a transparency factor is bellow 0 ore above 1 it is truncated
+	 * 
+	 * @param t1
+	 * 			the first image transparency factor
+	 * @param t2
+	 * 			the second image transparency factor
+	 */
+	public void adjustTransparency(float t1, float t2) {
+		transparency = t1;
+		comparedImageTransparency = t2;