fin

tp4/.gitignore

@@ -7,3 +7,6 @@
 /MatrixGrayImage.class
 /Transform.class
 /Invert.class
+/DecreaseGrayLevels.class
+/pixelate.class
+/Pixelate.class

tp4/ByteGrayColor.java

@@ -38,7 +38,7 @@ public class ByteGrayColor implements GrayColor {
     @Override
     public double getLuminosity() {
         // TODO : Retourner la luminosité de la couleur (entre 0 noir et 1 blanc)
-        return 0;
+        return (double)this.grayLevel/MAXIMUM_GRAY_LEVEL;
     }
 
     @Override
@@ -64,8 +64,13 @@ public class ByteGrayColor implements GrayColor {
 
     @Override
     public GrayColor invert() {
-		// TODO Auto-generated method stub
-		return null;
+        return new ByteGrayColor(MAXIMUM_GRAY_LEVEL - grayLevel);
+    }
+
+    public GrayColor decreaseGrayLevel(int nbGrayLevels){
+        return new ByteGrayColor((Math.floor(grayLevel/255.0 * (nbGrayLevels-1)) * MAXIMUM_GRAY_LEVEL / (nbGrayLevels-1)));
     }
 
+
+
 }

tp4/DecreaseGrayLevels.java

+public class DecreaseGrayLevels implements Transform {
+    int nbGrayLevel;
+    DecreaseGrayLevels(int nbGrayLevel){
+        this.nbGrayLevel = nbGrayLevel;
+        
+    }
+
+    @Override
+    public void applyTo(GrayImage image) {
+        for (int x = 0; x < image.getWidth(); ++x){
+            for(int y = 0; y < image.getHeight(); ++y){
+                image.setPixel(image.getPixelGrayColor(x, y).decreaseGrayLevel(nbGrayLevel), x, y);
+           
+            }
+        }
+    }
+
+}

tp4/GrayColor.java

@@ -8,11 +8,8 @@ public interface GrayColor extends Comparable<GrayColor> {
     int getGrayLevel();
     double getLuminosity();
     Color getColor();
+    GrayColor invert();
+    GrayColor decreaseGrayLevel(int nbGrayLevels);
 
-   // Add methode Invert()
-public GrayColor invert() {
 
 }
-}
-
-

tp4/GrayImage.java

@@ -5,4 +5,12 @@
 public interface GrayImage extends Image {
     void setPixel(GrayColor gray, int x, int y);
     GrayColor getPixelGrayColor(int x, int y);
+    GrayColor getDominantGray(int squareX, int squareY, int squareSize);
+    default int dominantGray(int squareX, int squareY, int squareSize) {
+        int sumOfGrayLevels = 0;
+        for (int x = squareX; x < squareX+squareSize; ++x)
+            for (int y = squareY; y < squareY+squareSize; ++y)
+                sumOfGrayLevels += getPixelGrayColor(x, y).getGrayLevel();
+        return (sumOfGrayLevels / (squareSize*squareSize));
+    }
 }

tp4/Invert.java

-
 public class Invert implements Transform {
-	public void invert() {
-		
-	}
-	
+    @Override
     public void applyTo(GrayImage image) {
-		
+        for (int x = 0; x < image.getWidth(); ++x){
+            for(int y = 0; y < image.getHeight(); ++y){
+                image.setPixel(image.getPixelGrayColor(x, y).invert(), x, y);
+            }
+        }
     }
-
 }
\ No newline at end of file

tp4/Main.java

@@ -15,6 +15,14 @@ public class Main
     			MatrixGrayImage.createImageFromPGMFile("luminy.pgm");   
     	
 	// Add code here;
+    	Invert invert = new Invert();
+        DecreaseGrayLevels decreaseGrayLevel = new DecreaseGrayLevels(5);
+    	Pixelate pixelate = new Pixelate(10);
+        
+        invert.applyTo(image);
+        pixelate.applyTo(image);
+        decreaseGrayLevel.applyTo(image);
+
     	display(image);
 	
     }

tp4/MatrixGrayImage.java

@@ -17,49 +17,47 @@ public class MatrixGrayImage implements GrayImage {
 
     @Override
     public void setPixel(GrayColor gray, int x, int y) {
-        // TODO : Compléter la méthode pour modifier le pixel.
         pixels[x][y] = gray;
     }
 
     @Override
     public GrayColor getPixelGrayColor(int x, int y) {
-        // TODO : Changer les instructions pour retourner le bon pixel.
-    	int Gcolor = pixels[x][y].getGrayLevel();
-        return new ByteGrayColor(Gcolor);
+        return pixels[x][y];
     }
 
     @Override
     public Color getPixelColor(int x, int y) {
-        // TODO : Changer les instructions pour retourner la couleur du pixel.
         return pixels[x][y].getColor();
     }
 
 
     @Override
     public int getWidth() {
-        // TODO : Changer les instructions pour retourner la largeur de l'image.
         return this.width;
     }
 
     @Override
     public int getHeight() {
-        // TODO : Changer les instructions pour retourner la hauteur de l'image.
         return this.height;
     }
 
     public MatrixGrayImage(int width, int height){
-        /* TODO : Modifier les instructions pour initialiser correctement
-            les propriétés de l'instance.
-         */
         this.width = width;
         this.height = height;
-        this.pixels = null;
+        this.pixels = new GrayColor[width][height];
     }
 
     public int getPixelByteColor(int x, int y) {
         return (int)(getPixelGrayColor(x, y).getGrayLevel()*PGM_MAXIMUM_CODE);
     }
 
+    @Override
+    public GrayColor getDominantGray(int squareX, int squareY, int squareSize) {
+        return new ByteGrayColor(dominantGray(squareX, squareY, squareSize));
+    }
+
+
+
     public static MatrixGrayImage createImageFromPGMFile(String fileName) {
         // NE PAS MODIFIER !
         InputStream file = ClassLoader.getSystemResourceAsStream(fileName);

tp4/Pixelate.java

+public class Pixelate implements Transform {
+    int newPixelSize;
+    int newSquareX;
+    int newSquareY;
+    GrayColor dominantColor;
+    Pixelate(int newPixelSize){
+        this.newPixelSize = newPixelSize;
+    }
+
+    @Override
+    public void applyTo(GrayImage image) {
+        for (int x = 0; x < (image.getWidth()) / newPixelSize; ++x) {
+            for (int y = 0; y < (image.getHeight()) / newPixelSize; ++y) {
+                newSquareX = x * newPixelSize;
+                newSquareY = y * newPixelSize;
+                dominantColor = image.getDominantGray(newSquareX, newSquareY, newPixelSize);
+                for (int squareX = 0; squareX < newPixelSize; ++squareX){
+                    for (int squareY = 0; squareY < newPixelSize; ++squareY ){
+                        int X = newSquareX + squareX;
+                        int Y = newSquareY + squareY;
+                        image.setPixel(dominantColor, X, Y);
+                    }
+                }
+
+            }
+        }
+    }
+}