public Rectangle2D getBounds2D( BufferedImage src ) {
        return new Rectangle(0, 0, src.getWidth(), src.getHeight());
    }
Return a mod b. This differs from the % operator with respect to negative numbers.
@param a the dividend
@param b the divisor
@return a mod b
tomighty-swing/src/main/java/com/jhlabs/image/BrushedMetalFilter.java