My question is simple. Lets say i have an offset value of (128.2, 324.9) which is the coordinates of a position in a stack. How can i a position a widget in the stack targetting this offset value. I currently have my `GestureDetector` class giving me this coordinates value but i want to also add a widget tin that position dynamically.

```
Widget addIndicatorImage(Offset offset) {
    if(_tapPosition!=null){
      return Positioned(child:
      new Image.asset('images/pain_report_indicator.png',
        height: 32, width: 32,));
    }else{
      return Container();
    }

  }

 Stack(
                children: [
                  GestureDetector(
                    onTapDown: _handleTapDown,
                    onTap: () {

                    },
                    child: Container(
                        child: Image.asset(
                      images[index],
                      height: 500,
                      width: double.infinity,
                    )),
                  ),
                  addIndicatorImage(_tapPosition),
                  ),
                ],
              ),

```