A fine transform

Spent a day trying to figure out why this function worked…

void transformDraw(BufferedImage bi,
                   Stroke st, Color c,
                   AffineTransform at, Shape sh)
{
    Graphics2D g2d = bi.createGraphics();
    g2d.setStroke(st);
    g2d.seteColor(c);
    g2d.draw(at.createTransformedShape(sh));
}

…but this one…

void transformDraw(BufferedImage bi,
                   Stroke st, Color c,
                   AffineTransform at, Shape sh)
{
    Graphics2D g2d = bi.createGraphics();
    g2d.setStroke(st);
    g2d.seteColor(c);
    g2d.transform(at);
    g2d.draw(sh);
}

…always resulted in the BufferedImage being filled entirely with the stroke color when I called the function like this…

transformDraw(myBufferedImg,
              new BasicStroke(3), Color.RED,
              AffineTransform.getScaleInstance(100000, 100000),
              myShape);

It was this pdf that helped me finally understand why those two functions are different.