qgsoverlayutils.h

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/***************************************************************************
  qgsoverlayutils.h
  ---------------------
  Date                 : April 2018
  Copyright            : (C) 2018 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSOVERLAYUTILS_H
#define QGSOVERLAYUTILS_H
 
#include "qgsgeometry.h"
#include "qgswkbtypes.h"
 
#include <QList>
 
#define SIP_NO_FILE

 
class QgsFeatureSource;
class QgsFeatureSink;
class QgsFields;
class QgsProcessingContext;
class QgsProcessingFeedback;
 
namespace QgsOverlayUtils
{

  enum DifferenceOutput
  {
    OutputA,  
    OutputAB, 
    OutputBA, 
  };
 

  enum SanitizeFlag
  {
    DontPromotePointGeometryToMultiPoint = 1 << 0, 
  };

  Q_DECLARE_FLAGS( SanitizeFlags, SanitizeFlag )
 
 
  void difference(
    const QgsFeatureSource &sourceA,
    const QgsFeatureSource &sourceB,
    QgsFeatureSink &sink,
    const QString &sinkName,
    QgsProcessingContext &context,
    QgsProcessingFeedback *feedback,
    long &count,
    long totalCount,
    DifferenceOutput outputAttrs,
    const QgsGeometryParameters &parameters = QgsGeometryParameters(),
    SanitizeFlags flags = SanitizeFlags()
  );
 
  void intersection(
    const QgsFeatureSource &sourceA,
    const QgsFeatureSource &sourceB,
    QgsFeatureSink &sink,
    const QString &sinkName,
    QgsProcessingContext &context,
    QgsProcessingFeedback *feedback,
    long &count,
    long totalCount,
    const QList<int> &fieldIndicesA,
    const QList<int> &fieldIndicesB,
    const QgsGeometryParameters &parameters = QgsGeometryParameters()
  );

  bool sanitizeIntersectionResult( QgsGeometry &geom, Qgis::GeometryType geometryType, SanitizeFlags flags = SanitizeFlags() );

  void resolveOverlaps(
    const QgsFeatureSource &source,
    QgsFeatureSink &sink,
    const QString &sinkName,
    QgsProcessingFeedback *feedback,
    const QgsGeometryParameters &parameters = QgsGeometryParameters(),
    SanitizeFlags flags = SanitizeFlags()
  );
} // namespace QgsOverlayUtils
 
Q_DECLARE_OPERATORS_FOR_FLAGS( QgsOverlayUtils::SanitizeFlags )
 

 
#endif // QGSOVERLAYUTILS_H