How to obtain corner points of rotated rectangle?

Am drawing a rectangle, then using an Affine Transform to rotate the angle. After rotating and drawing the rectangle, I need to obtain the 4 corner points of the rectangle. This is (psuedocode) for what I've tried:
Rectangle r = new Rectangle (x, y, width, height);
AffineTransform at = new AffineTransform();
at.rotate (angleInDegrees*Math.PI/180);
Shape s = at.createTransformedShape (r);
PathIterator pi = s.getPathIterator(at);
while (pi.isDone() == false)
fetchCornerPoint (pi);
pi.next();
g2.draw(s);
The shape is being correctly drawn on the screen, so I know the transofmr is working. But the path appears to contain the 4 corner points of the rectangle prior to rotation, not the 4 corner points after the rotation.
It's got to be a "doh moment", but I can't see it.

I notice you call getPathIterator on 's', which is already transformed. I have not verified this, but maybe you should call getPathIterator(at) on the original shape ('r')?

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