public int getMinTileX() {
        return XToTileX(getMinX());
    }
Returns the horizontal index of the leftmost column of tiles.
getMinTileX() is implemented in terms of getMinX()
and so does not need to be implemented by subclasses.
plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util/SimpleRenderedImage.java