if (logger.isDebugEnabled()) { logger.debug("Zoom created" + " slider=" + slider + " ratio=" + ratio); }  setSlider(slider); setRatio(ratio);
this(1);
    public Zoom (LogSlider slider,                 double    ratio)    {        if (logger.isDebugEnabled()) {            logger.debug("Zoom created" +                         " slider=" + slider +                         " ratio=" + ratio);        }        setSlider(slider);        setRatio(ratio);    }