207      * An <code>ImageFilter</code> subclass might override this method or not,
 208      * depending on if and how it can send data in TDLR order.
 209      * Three possibilities exist:
 210      *
 211      * <ul>
 212      * <li>
 213      * Do not override this method.
 214      * This makes the subclass use the default implementation,
 215      * which is to
 216      * forward the request
 217      * to the indicated <code>ImageProducer</code>
 218      * using this filter as the requesting <code>ImageConsumer</code>.
 219      * This behavior
 220      * is appropriate if the filter can determine
 221      * that it will forward the pixels
 222      * in TDLR order if its upstream producer object
 223      * sends them in TDLR order.
 224      *
 225      * <li>
 226      * Override the method to simply send the data.
 227      * This is appropriate if the filter can handle the request itself —
 228      * for example,
 229      * if the generated pixels have been saved in some sort of buffer.
 230      *
 231      * <li>
 232      * Override the method to do nothing.
 233      * This is appropriate
 234      * if the filter cannot produce filtered data in TDLR order.
 235      * </ul>
 236      *
 237      * @see ImageProducer#requestTopDownLeftRightResend
 238      * @param ip the ImageProducer that is feeding this instance of
 239      * the filter - also the ImageProducer that the request should be
 240      * forwarded to if necessary
 241      * @exception NullPointerException if <code>ip</code> is null
 242      */
 243     public void resendTopDownLeftRight(ImageProducer ip) {
 244         ip.requestTopDownLeftRightResend(this);
 245     }
 246 
 247     /**

 207      * An <code>ImageFilter</code> subclass might override this method or not,
 208      * depending on if and how it can send data in TDLR order.
 209      * Three possibilities exist:
 210      *
 211      * <ul>
 212      * <li>
 213      * Do not override this method.
 214      * This makes the subclass use the default implementation,
 215      * which is to
 216      * forward the request
 217      * to the indicated <code>ImageProducer</code>
 218      * using this filter as the requesting <code>ImageConsumer</code>.
 219      * This behavior
 220      * is appropriate if the filter can determine
 221      * that it will forward the pixels
 222      * in TDLR order if its upstream producer object
 223      * sends them in TDLR order.
 224      *
 225      * <li>
 226      * Override the method to simply send the data.
 227      * This is appropriate if the filter can handle the request itself —
 228      * for example,
 229      * if the generated pixels have been saved in some sort of buffer.
 230      *
 231      * <li>
 232      * Override the method to do nothing.
 233      * This is appropriate
 234      * if the filter cannot produce filtered data in TDLR order.
 235      * </ul>
 236      *
 237      * @see ImageProducer#requestTopDownLeftRightResend
 238      * @param ip the ImageProducer that is feeding this instance of
 239      * the filter - also the ImageProducer that the request should be
 240      * forwarded to if necessary
 241      * @exception NullPointerException if <code>ip</code> is null
 242      */
 243     public void resendTopDownLeftRight(ImageProducer ip) {
 244         ip.requestTopDownLeftRightResend(this);
 245     }
 246 
 247     /**