positionTween method
Returns a RelativeRectTween that is used to animate from the origin of renderBox to the size of the screen.
Implementation
RelativeRectTween positionTween(BoxConstraints constraints) {
final origin = renderBoxOffset! & renderBoxSize!;
return RelativeRectTween(
begin: RelativeRect.fromLTRB(
origin.left,
origin.top,
constraints.biggest.width - origin.right,
constraints.biggest.height - origin.bottom),
end: RelativeRect.fill,
);
}