Mirror flip image

src/main-en/java/fri/shapesge/Image.java

@@ -162,4 +162,12 @@ public void changeAngle(int angle) {
     public void changePosition(int x, int y) {
         this.drawable.moveTo(x, y);
     }
+
+    /**
+     * Flip the image horizontally (along its y-axis)
+     */
+    @SuppressWarnings("unused")
+    public void flipHorizontally() {
+        this.drawable.flip();
+    }
 }

src/main-sk/java/fri/shapesge/Obrazok.java

@@ -159,4 +159,12 @@ public void zmenUhol(int uhol) {
     public void zmenPolohu(int x, int y) {
         this.drawable.moveTo(x, y);
     }
+
+    /**
+     * Zrkadlovito otoč obrázok v horizontálnom smere (v smere jeho y-ovej osi).
+     */
+    @SuppressWarnings("unused")
+    public void otocHorizontalne() {
+        this.drawable.flip();
+    }
 }

src/main/java/fri/shapesge/drawables/ImageDrawable.java

@@ -8,10 +8,12 @@
 
 public class ImageDrawable extends TranslatableDrawable {
     private BufferedImage image;
+    private boolean isFlipped;
 
     public ImageDrawable(int x, int y, int angle, BufferedImage image) {
         super(x, y, angle);
         this.image = image;
+        this.isFlipped = false;
     }
 
     public void changeImage(BufferedImage image) {
@@ -32,7 +34,15 @@ public void draw(Graphics2D canvas) {
         if (!this.isVisible()) {
             return;
         }
+        if (this.isFlipped) {
+            canvas.drawImage(this.image, this.getXPosition() + this.image.getWidth(), this.getYPosition(),
+                    -this.image.getWidth(), this.image.getHeight(), null);
+        } else {
+            canvas.drawImage(this.image, this.getTransform(), null);
+        }
+    }
 
-        canvas.drawImage(this.image, this.getTransform(), null);
+    public void flip() {
+        this.isFlipped = !this.isFlipped;
     }
 }