if (paint.getTransparency() == Transparency.OPAQUE) {
type = BufferedImage.TYPE_3BYTE_BGR;
}
img = new BufferedImage((int)width, (int)height, type);
Graphics2D g = (Graphics2D)img.getGraphics();
g.transform(transform);
AffineTransform inv = transform.createInverse();
Shape fillRect = new Rectangle2D.Double(0,0,img.getWidth(),img.getHeight());
fillRect = inv.createTransformedShape(fillRect);
g.setPaint(paint);
g.fill(fillRect);