When I was reading through Align's documentation I found the following explanation.

The link is https://api.flutter.dev/flutter/widgets/Align-class.html#widgets.Align.2

The 0.2 is the xAlign and the 0.6 is the YAlign, follow the formulas in the official documentation and finally calculate a point (36.0,48.0). When xAlign is less than zero or yAlign is less than zero, the calculation according to this formula is always positive. And the formula for calculating the offset of FlutterLogo and Container in the source code is as follows(alignment.dart lines:290):

Offset other = size - child!.size as Offset;
final double centerX = other.dx / 2.0;
final double centerY = other.dy / 2.0;
childParentData.offset = Offset(centerX + xAlign * centerX, centerY + yAlign * centerY);

The result according to the formula in the source code does not seem to have any relation to (36,48). Did I misunderstand or did the document say something wrong?