code: /*
   * citygml-tools - Collection of tools for processing CityGML files
   * https://github.com/citygml4j/citygml-tools
   *
   * citygml-tools is part of the citygml4j project
   *
   * Copyright 2018-2023 Claus Nagel <claus.nagel@gmail.com>
   *
   * 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.
   */
  
  package org.citygml4j.tools.option;
  
  import org.citygml4j.tools.util.BoundingBoxFilter;
  import org.xmlobjects.gml.model.geometry.DirectPosition;
  import org.xmlobjects.gml.model.geometry.Envelope;
  import picocli.CommandLine;
  
  public class BoundingBoxOption implements Option {
      @CommandLine.Option(names = {"-b", "--bbox"}, paramLabel = "<minx,miny,maxx,maxy>",
              required = true, description = "Bounding box to use as spatial filter. The reference system of the " +
              "coordinates must match the reference system of the input file(s).")
      private String bbox;
  
      @CommandLine.Option(names = "--bbox-mode", paramLabel = "<mode>", defaultValue = "intersects",
              description = "Bounding box filter mode: ${COMPLETION-CANDIDATES} (default: ${DEFAULT-VALUE}).")
      private BoundingBoxFilter.Mode mode;
  
      private Envelope boundingBox;
  
      public Envelope getBoundingBox() {
          return boundingBox;
      }
  
      public BoundingBoxFilter.Mode getMode() {
          return mode;
      }
  
      public BoundingBoxFilter toBoundingBoxFilter() {
          return boundingBox != null ?
                  BoundingBoxFilter.of(boundingBox).withMode(mode) :
                  null;
      }
  
      @Override
      public void preprocess(CommandLine commandLine) {
          if (bbox != null) {
              String[] parts = bbox.split(",");
              if (parts.length == 4) {
                  try {
                      boundingBox = new Envelope(
                              new DirectPosition(Double.parseDouble(parts[0]), Double.parseDouble(parts[1])),
                              new DirectPosition(Double.parseDouble(parts[2]), Double.parseDouble(parts[3])));
                  } catch (NumberFormatException e) {
                      throw new CommandLine.ParameterException(commandLine,
                              "Error: The coordinates of a bounding box must be floating point numbers but were '" +
                                      String.join(",", parts[0], parts[1], parts[2], parts[3]) + "'");
                  }
  
                  if (!boundingBox.isValid()) {
                      throw new CommandLine.ParameterException(commandLine,
                              "Error: The specified bounding box '" + bbox + "' is not valid.");
                  }
              } else {
                  throw new CommandLine.ParameterException(commandLine,
                          "A bounding box must be in MINX,MINY,MAXX,MAXY format but was '" + bbox + "'");
              }
          }
      }
  }
  