Added basic bouncing

Assets/Scripts/CanvasManager.cs

@@ -28,5 +28,13 @@ namespace InterfaceOff
 
             return new Vector3(x, y, 0f);
         }
+
+        public static bool IsRectWithinCanvas(Rect rect)
+        {
+            Rect b = Instance.GameCanvas.pixelRect;
+            Rect a = rect;
+            
+            return b.xMin <= a.xMin && b.yMin <= a.yMin && b.xMax >= a.xMax && b.yMax >= a.yMax;
+        }
     }
 }