content: package act.controller.captcha.render.img;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2018 ActFramework
   * %%
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   * 
   *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  
  import com.github.bingoohuang.patchca.filter.library.RippleImageOp;
  import org.osgl.util.Img;
  
  import java.awt.image.BufferedImage;
  
  public class RippleFilter extends Img.Filter {
      @Override
      protected BufferedImage run() {
          RippleImageOp op = new RippleImageOp();
          target = op.filter(target, null);
          return target;
      }
  }
  