Change Align to Position

lib/main.dart

@@ -26,16 +26,15 @@ class AppState extends State<App> {
             fit: BoxFit.cover,
           ),
           ColorFiltered(
-            colorFilter: ColorFilter.mode(Colors.black.withOpacity(0.8),
+            colorFilter:
-                BlendMode.srcOut), // This one will create the magic
+                ColorFilter.mode(Colors.black.withOpacity(0.8), BlendMode.srcOut), // This one will create the magic
             child: Stack(
               fit: StackFit.expand,
               children: [
                 Container(
                   decoration: BoxDecoration(
                       color: Colors.black,
-                      backgroundBlendMode: BlendMode
+                      backgroundBlendMode: BlendMode.dstOut), // This one will handle background + difference out
-                          .dstOut), // This one will handle background + difference out
                 ),
                 MovingHole(),
               ],
@@ -55,13 +54,15 @@ class MovingHole extends StatefulWidget {
 class MovingHoleState extends State<MovingHole> {
   double _width = 200;
   double _height = 200;
-  Alignment _alignment = Alignment.topLeft;
+  Offset _alignment = Offset(100, 200);
   bool end = true;
 
   @override
   Widget build(BuildContext context) {
-    return Align(
+    return Positioned(
-        alignment: _alignment,
+        top: _alignment.dx,
+        left: _alignment.dy,
+        // alignment: _alignment,
         child: GestureDetector(
             onTap: () async {
               end == true
@@ -69,7 +70,7 @@ class MovingHoleState extends State<MovingHole> {
                       setState(() {
                         _width = 100;
                         _height = 100;
-                        _alignment = Alignment.topRight;
+                        _alignment = Offset(120, 200);
                         end = false;
                       });
                     })
@@ -77,7 +78,7 @@ class MovingHoleState extends State<MovingHole> {
                       setState(() {
                         _width = 200;
                         _height = 200;
-                        _alignment = Alignment.bottomLeft;
+                        _alignment = Offset(50, 29);
                         end = true;
                       });
                     });