QGIS API Documentation  2.17.0-Master (872e6d2)
qgsinterpolator.h
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1 /***************************************************************************
2  qgsinterpolator.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 QGSINTERPOLATOR_H
19 #define QGSINTERPOLATOR_H
20 
21 #include <QVector>
22 
23 class QgsVectorLayer;
24 class QgsGeometry;
25 
26 struct ANALYSIS_EXPORT vertexData
27 {
28  double x;
29  double y;
30  double z;
31 };
32 
37 class ANALYSIS_EXPORT QgsInterpolator
38 {
39  public:
41  enum InputType
42  {
45  BREAK_LINES
46  };
47 
49  struct LayerData
50  {
55  };
56 
57  QgsInterpolator( const QList<LayerData>& layerData );
58 
59  virtual ~QgsInterpolator();
60 
66  virtual int interpolatePoint( double x, double y, double& result ) = 0;
67 
69  const QList<LayerData>& layerData() const { return mLayerData; }
70 
71  protected:
75  int cacheBaseData();
76 
78 
81 
82  //Information about the input vector layers and the attributes (or z-values) that are used for interpolation
84 
85  private:
86  QgsInterpolator(); //forbidden
92  int addVerticesToCache( const QgsGeometry* geom, bool zCoord, double attributeValue );
93 };
94 
95 #endif
QList< LayerData > mLayerData
QVector< vertexData > mCachedBaseData
Interface class for interpolations.
QgsVectorLayer * vectorLayer
A geometry is the spatial representation of a feature.
Definition: qgsgeometry.h:76
InputType
Describes the type of input data.
const QList< LayerData > & layerData() const
bool mDataIsCached
Flag that tells if the cache already has been filled.
A layer together with the information about interpolation attribute / z-coordinate interpolation and ...
Represents a vector layer which manages a vector based data sets.