v0.2.53..v0.2.54 changeset HighwayCornerSplitter.h

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/HighwayCornerSplitter.h b/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/HighwayCornerSplitter.h
new file mode 100644
index 0000000..d321d46
--- /dev/null
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/splitter/HighwayCornerSplitter.h
@@ -0,0 +1,118 @@
+/*
+ * 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) 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+
+#ifndef HIGHWAYCORNERSPLITTER_H
+#define HIGHWAYCORNERSPLITTER_H
+
+// Hoot
+#include <hoot/core/ops/OsmMapOperation.h>
+#include <hoot/core/util/Configurable.h>
+#include <hoot/core/criterion/HighwayCriterion.h>
+
+// Qt
+#include <QMultiHash>
+#include <QSet>
+#include <QMap>
+#include <vector>
+
+namespace hoot
+{
+
+class OsmMap;
+class Way;
+
+/**
+ * Given an OsmMap, ways are split at sharp (or rounded, if desired) corners. This can help
+ * when conflating data that is mostly major roads with data that contains a lot of
+ * neighborhood-level data.
+ */
+class HighwayCornerSplitter : public OsmMapOperation, Configurable
+{
+public:
+
+  static std::string className() { return "hoot::HighwayCornerSplitter"; }
+
+  HighwayCornerSplitter();
+  HighwayCornerSplitter(const std::shared_ptr<OsmMap>& map);
+
+  virtual void apply(std::shared_ptr<OsmMap>& map) override;
+
+  static void splitCorners(const std::shared_ptr<OsmMap>& map);
+
+  void splitCorners();
+
+  virtual QString getDescription() const override { return "Splits sharp road corners"; }
+  /**
+   * Set the configuration for this object.
+   */
+  virtual void setConfiguration(const Settings& conf) override;
+
+  virtual QString getInitStatusMessage() const { return "Splitting sharp road corners..."; }
+
+  virtual QString getCompletedStatusMessage() const
+  { return "Split " + QString::number(_numAffected) + " road corners"; }
+
+  /**
+   * @see FilteredByCriteria
+   */
+  virtual QStringList getCriteria() const
+  { return QStringList(QString::fromStdString(HighwayCriterion::className())); }
+
+  virtual std::string getClassName() const { return className(); }
+
+private:
+
+  /**
+   * @brief _splitRoundedCorners Split rounded corners in the middle just like a non-rounded corner
+   */
+  void _splitRoundedCorners();
+  /**
+   * @brief _splitWay Split the way at the given node, using the WaySplitter, then process the results
+   * @param wayId Index of way to split
+   * @param nodeIdx Index of node to split at
+   * @param nodeId ID of the node to split at
+   * @param sharpCorner True if being called from the sharp corner splitting code
+   * @return True if the way was actually split
+   */
+  bool _splitWay(long wayId, long nodeIdx, long nodeId, bool sharpCorner = true);
+  /** Pointer to the OsmMap */
+  std::shared_ptr<OsmMap> _map;
+  /** Vector of ways that are yet to be processed */
+  std::vector<long> _todoWays;
+  /** Threshold in degrees for splitting sharp corners */
+  double _cornerThreshold;
+  /** Flag to turn on/off rounded corner splitting */
+  bool _splitRounded;
+  /** Threshold in degrees for splitting rounded corners */
+  double _roundedThreshold;
+  /** Maximum number of nodes to consider while checking for a rounded corner*/
+  int _roundedMaxNodeCount;
+};
+
+}
+
+#endif // HIGHWAYCORNERSPLITTER_H