build method
Widget that performs animation spring between x and y
Implementation
@override
Widget build(BuildContext context) {
return Container(
padding: index == 0
? const EdgeInsets.only(top: 10)
: const EdgeInsets.only(top: 0),
child: Opacity(
opacity: 1 - value,
child: Transform(
alignment: Alignment.bottomCenter,
transform: Matrix4.identity()
..translate(0, -10, -110)
..rotateY(value / 0.2)
..translate(0, 10, 110),
child: child,
),
),
);
}