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59 lines
2.3 KiB
C++
59 lines
2.3 KiB
C++
/***************************************************************************
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qgsoverlayanalyzer.h - QGIS Tools for vector geometry analysis
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-------------------
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begin : 19 March 2009
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copyright : (C) Carson Farmer
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email : carson.farmer@gmail.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef QGSOVERLAYANALYZERH
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#define QGSOVERLAYANALYZERH
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#include "qgsdistancearea.h"
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#include "qgsfeature.h"
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#include "qgsfield.h"
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#include "qgsgeometry.h"
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#include "qgsspatialindex.h"
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#include "qgsvectorlayer.h"
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class QgsVectorFileWriter;
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class QProgressDialog;
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/** \ingroup analysis
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* The QGis class provides vector overlay analysis functions
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*/
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class ANALYSIS_EXPORT QgsOverlayAnalyzer
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{
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public:
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/**Perform an intersection on two input vector layers and write output to a new shape file
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@param layerA input vector layer
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@param layerB input vector layer
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@param shapefileName path to the output shp
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@param onlySelectedFeatures if true, only selected features are considered, else all the features
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@param p progress dialog (or 0 if no progress dialog is to be shown)
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*/
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bool intersection( QgsVectorLayer* layerA, QgsVectorLayer* layerB,
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const QString& shapefileName, bool onlySelectedFeatures = false,
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QProgressDialog* p = 0 );
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private:
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void combineFieldLists( QgsFields& fieldListA, const QgsFields& fieldListB );
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void intersectFeature( QgsFeature& f, QgsVectorFileWriter* vfw, QgsVectorLayer* dp, QgsSpatialIndex* index );
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void combineAttributeMaps( QgsAttributes& attributesA, const QgsAttributes& attributesB );
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};
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#endif //QGSVECTORANALYZER
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