v0.2.50..v0.2.51 changeset OsmMapSplitter.h

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/OsmMapSplitter.h b/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/OsmMapSplitter.h
new file mode 100644
index 0000000..8db24eb
--- /dev/null
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/OsmMapSplitter.h
@@ -0,0 +1,93 @@
+/*
+ * This file is part of Hootenanny.
+ *
+ * Hootenanny is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --------------------------------------------------------------------
+ *
+ * The following copyright notices are generated automatically. If you
+ * have a new notice to add, please use the format:
+ * " * @copyright Copyright ..."
+ * This will properly maintain the copyright information. DigitalGlobe
+ * copyrights will be updated automatically.
+ *
+ * @copyright Copyright (C) 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+
+#ifndef OSM_MAP_SPLITTER
+#define OSM_MAP_SPLITTER
+
+//  Hoot
+#include <hoot/core/elements/OsmMap.h>
+#include <hoot/core/util/Configurable.h>
+
+//  Geos
+#include <geos/geom/Envelope.h>
+
+//  Std
+#include <set>
+#include <vector>
+
+namespace hoot
+{
+
+/**
+ * @brief The OsmMapSplitter class splits a map up into multiple maps based on preprocessed
+ * tile boundaries.  Elements that span tiles will only be assigned to one tile output map
+ * so that they aren't duplicated in conflation campaigns.
+ */
+class OsmMapSplitter : public Configurable
+{
+public:
+  OsmMapSplitter(const OsmMapPtr& map, const OsmMapPtr& tiles);
+
+  virtual void setConfiguration(const Settings& conf) override;
+
+  void apply();
+  /**
+   * @brief writeMaps Write all maps to disk with only their corresponding elements
+   * @param filename Base filename for all files in the format:
+   *   output-00001.osm
+   *   ...
+   *   output-0000n.osm
+   */
+  void writeMaps(const QString& filename);
+
+private:
+
+  /**
+   * @brief _placeElementInMap Take an element from the original map and find the tile map that
+   *  that it falls into and then copy it to the new map
+   * @param element Element to copy into tile map
+   */
+  void _placeElementInMap(const ElementPtr& element);
+
+  typedef QMap<geos::geom::Envelope, OsmMapPtr> TileMap;
+  /** Original map to split up */
+  OsmMapPtr _map;
+  /** Map of polygon ways that indicate tile divisions */
+  OsmMapPtr _tiles;
+  /** Vector of tile envelopes to check new elements against */
+  std::vector<geos::geom::Envelope> _tileEnvelopes;
+  /** Vector of maps whose index corresponds to the tile envelopes above */
+  std::vector<OsmMapPtr> _tileMaps;
+  /** Set of all elements that have already been processed so that no elements are repeated */
+  std::set<ElementId> _eidsCompleted;
+
+  long _statusUpdateInterval;
+};
+
+}
+
+#endif  //  OSM_MAP_SPLITTER