Inflates a LogicalRectangle structure by the specified amount.
x
The amount to inflate this LogicalRectangle horizontally.
y
The amount to inflate this LogicalRectangle vertically.
This method inflates this rectangle, not a copy of it. The inflation along an axis is in two directions (minus direction and plus direction). For example, if a 150 by 150 rectangle is inflated by 50 in the x-axis, the resulting rectangle will be 250 units long (the original 150, the 50 in the minus direction, and the 50 in the plus direction) maintaining the rectangle's geometric center. If either x or y is negative, the Rectangle structure is deflated in the corresponding direction.