v0.2.48..v0.2.49 changeset RandomNodeDuplicator.h

diff --git a/hoot-core/src/main/cpp/hoot/core/ops/RandomNodeDuplicator.h b/hoot-core/src/main/cpp/hoot/core/ops/RandomNodeDuplicator.h
new file mode 100644
index 0000000..a06fc04
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+++ b/hoot-core/src/main/cpp/hoot/core/ops/RandomNodeDuplicator.h
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+/*
+ * 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) 2015, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+#ifndef RANDOM_NODE_DUPLICATOR_H
+#define RANDOM_NODE_DUPLICATOR_H
+
+// hoot
+#include <hoot/core/elements/OsmMap.h>
+#include <hoot/core/ops/OsmMapOperation.h>
+#include <hoot/core/util/Configurable.h>
+#include <hoot/core/info/OperationStatusInfo.h>
+#include <hoot/core/util/RngConsumer.h>
+
+// Qt
+#include <QString>
+
+namespace hoot
+{
+
+/**
+ * Duplicates a node with some random error.  This is not part of the original PERTY paper.
+ *
+ * @todo This should really change the node after it has been duplicated.
+ */
+class RandomNodeDuplicator : public OsmMapOperation, public Configurable, public RngConsumer,
+  public OperationStatusInfo
+{
+public:
+
+  static std::string className() { return "hoot::RandomNodeDuplicator"; }
+
+  RandomNodeDuplicator();
+  virtual ~RandomNodeDuplicator() {}
+
+  virtual void apply(OsmMapPtr& map);
+
+  void duplicateNode(const NodePtr& n, const OsmMapPtr& map);
+
+  virtual void setConfiguration(const Settings& conf);
+
+  /**
+   * The number of duplicates is set as round(abs(N(0, sigma^2))) + 1. Setting sigma to 0 will
+   * guarantee that there will always be exactly one duplicate.
+   */
+  void setDuplicateSigma(double sigma) { _duplicateSigma = sigma; }
+
+  /**
+   * The distance that a feature is moved is based on the circular error of the source point. The
+   * new point will be put within N(0, sigma^2) * moveMultiplier meters of the source point where
+   * sigma is the standard deviation associated with the source point.
+   */
+  void setMoveMultiplier(double moveMultiplier) { _moveMultiplier = moveMultiplier; }
+
+  /**
+   * The probability of at least one duplicate being created. See setDuplicateSigma to determine
+   * how many duplicates will be created.
+   */
+  void setProbability(double p) { _p = p; }
+
+  virtual void setRng(boost::minstd_rand& rng) { _rng = &rng; }
+
+  virtual QString getDescription() const
+  { return "Duplicates a node with some random error"; }
+
+  virtual QString getInitStatusMessage() const
+  { return "Randomly duplicating nodes..."; }
+
+  virtual QString getCompletedStatusMessage() const
+  { return "Randomly duplicated " + QString::number(_numAffected) + " nodes"; }
+
+private:
+
+  double _moveMultiplier;
+  double _p;
+  double _duplicateSigma;
+  boost::minstd_rand* _rng;
+  std::shared_ptr<boost::minstd_rand> _localRng;
+};
+
+}
+
+#endif // RANDOM_NODE_DUPLICATOR_H