implemented window function

src/core/transformations/transformation.cpp

@@ -158,9 +158,31 @@ math::matrix<float> Transformation::getWindow(int x, int y, int size,
                                               Channel channel,
                                               Mode mode = RepeatEdge)
 {
-    math::matrix<float> window(size,size);
+    math::matrix<float> window(size, size);
+    int center = size / 2;
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for (int i = 0; i < size; i++)
+    {
+        for (int j = 0; j < size; j++)
+        {
+            QRgb p = getPixel(x - center + i, y - center + j, mode);
+            switch (channel)
+            {
+                case RChannel:
+                    window[i][j] = qRed(p);
+                    break;
+                case GChannel:
+                    window[i][j] = qGreen(p);
+                    break;
+                case BChannel:
+                    window[i][j] = qBlue(p);
+                    break;
+                case LChannel:
+                    window[i][j] = qGray(p);
+                    break;
+            }
+        }
+    }
 
     return window;
 }