QGIS API Documentation  2.99.0-Master (19b062c)
qgstininterpolator.h
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1 /***************************************************************************
2  qgstininterpolator.h
3  --------------------
4  begin : March 10, 2008
5  copyright : (C) 2008 by Marco Hugentobler
6  email : marco dot hugentobler at karto dot baug dot ethz dot ch
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSTININTERPOLATOR_H
19 #define QGSTININTERPOLATOR_H
20 
21 #include "qgsinterpolator.h"
22 #include <QString>
23 #include "qgis_analysis.h"
24 
25 class QgsFeatureSink;
26 class Triangulation;
28 class QgsFeature;
29 class QgsFeedback;
30 class QgsFields;
31 
37 class ANALYSIS_EXPORT QgsTinInterpolator: public QgsInterpolator
38 {
39  public:
40 
43  {
46  };
47 
53  QgsTinInterpolator( const QList<QgsInterpolator::LayerData> &inputData, TinInterpolation interpolation = Linear, QgsFeedback *feedback = nullptr );
55 
56  int interpolatePoint( double x, double y, double &result, QgsFeedback *feedback ) override;
57 
65  static QgsFields triangulationFields();
66 
76  void setTriangulationSink( QgsFeatureSink *sink );
77 
78  private:
79  Triangulation *mTriangulation = nullptr;
80  TriangleInterpolator *mTriangleInterpolator = nullptr;
81  bool mIsInitialized;
82  QgsFeedback *mFeedback = nullptr;
83 
85  QgsFeatureSink *mTriangulationSink = nullptr;
87  TinInterpolation mInterpolation;
88 
90  void initialize();
91 
100  int insertData( const QgsFeature &f, QgsInterpolator::ValueSource source, int attr, SourceType type );
101 
102  int addPointsFromGeometry( const QgsGeometry &g, ValueSource source, double attributeValue );
103 };
104 
105 #endif
Interface class for interpolations.
An interface for objects which accept features via addFeature(s) methods.
Clough-Tocher interpolation.
Container of fields for a vector layer.
Definition: qgsfields.h:42
A geometry is the spatial representation of a feature.
Definition: qgsgeometry.h:111
Interpolation in a triangular irregular network.
SourceType
Describes the type of input data.
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
Definition: qgsfeature.h:62
Base class for feedback objects to be used for cancelation of something running in a worker thread...
Definition: qgsfeedback.h:44
virtual int interpolatePoint(double x, double y, double &result, QgsFeedback *feedback=nullptr)=0
Calculates interpolation value for map coordinates x, y.
ValueSource
Source for interpolated values from features.
This is an interface for interpolator classes for triangulations.
Interface for Triangulation classes.
Definition: Triangulation.h:38
Linear interpolation.
TinInterpolation
Indicates the type of interpolation to be performed.