qgstininterpolator.h

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/***************************************************************************
                              qgstininterpolator.h
                              --------------------
  begin                : March 10, 2008
  copyright            : (C) 2008 by Marco Hugentobler
  email                : marco dot hugentobler at karto dot baug dot ethz dot ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSTININTERPOLATOR_H
#define QGSTININTERPOLATOR_H
 
#include "qgis_analysis.h"
#include "qgsinterpolator.h"
 
#include <QString>
 
class QgsFeatureSink;
class QgsTriangulation;
class TriangleInterpolator;
class QgsFeature;
class QgsFeedback;
class QgsFields;

class ANALYSIS_EXPORT QgsTinInterpolator : public QgsInterpolator
{
  public:
    enum class TinInterpolation SIP_MONKEYPATCH_SCOPEENUM_UNNEST( QgsTinInterpolator, TinInterpolation ) : int
    {
      Linear,       
      CloughTocher, 
    };

    QgsTinInterpolator(
      const QList<QgsInterpolator::LayerData> &inputData, QgsTinInterpolator::TinInterpolation interpolation = QgsTinInterpolator::TinInterpolation::Linear, QgsFeedback *feedback = nullptr
    );
    ~QgsTinInterpolator() override;
 
    int interpolatePoint( double x, double y, double &result SIP_OUT, QgsFeedback *feedback ) override;

    static QgsFields triangulationFields();

    void setTriangulationSink( QgsFeatureSink *sink );
 
  private:
    QgsTriangulation *mTriangulation = nullptr;
    TriangleInterpolator *mTriangleInterpolator = nullptr;
    bool mIsInitialized = false;
    QgsFeedback *mFeedback = nullptr;

    QgsFeatureSink *mTriangulationSink = nullptr;
    QgsTinInterpolator::TinInterpolation mInterpolation;

    void initialize();

    int insertData( const QgsFeature &f, Qgis::InterpolationValueSource source, int attr, Qgis::InterpolationSourceType type );
 
    int addPointsFromGeometry( const QgsGeometry &g, Qgis::InterpolationValueSource source, double attributeValue );
};
 
#endif