implement resize feature

src/main/java/ovh/gasser/newshapes/shapes/SCircle.java

@@ -8,7 +8,7 @@ import java.awt.*;
 
 public class SCircle extends AbstractShape {
 
-    private final int radius;
+    private int radius;
 
     private SCircle(int x, int y, int radius) {
         super(new Rectangle(x, y, radius * 2, radius * 2));
@@ -20,6 +20,32 @@ public class SCircle extends AbstractShape {
         visitor.visitCircle(this);
     }
 
+    @Override
+    public void resize(ResizeHandle handle, int dx, int dy) {
+        Rectangle bounds = getBounds();
+        int newWidth = bounds.width;
+        int newHeight = bounds.height;
+
+        switch (handle) {
+            case E, W -> newWidth += dx;
+            case N, S -> newHeight += dy;
+            case SE, NW -> {
+                newWidth += dx;
+                newHeight += dy;
+            }
+            case NE, SW -> {
+                newWidth += dx;
+                newHeight += dy;
+            }
+        }
+
+        if (newWidth < 2) newWidth = 2;
+        if (newHeight < 2) newHeight = 2;
+
+        this.radius = Math.max(newWidth, newHeight) / 2;
+        bounds.setSize(this.radius * 2, this.radius * 2);
+    }
+
     @Override
     public Shape clone() {
         var color = (ColorAttributes) getAttributes(ColorAttributes.ID);