/usr/include/qgis/qgstininterpolator.h is in libqgis-dev 1.7.4+1.7.5~20120320-1.1+b1.
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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 "qgsinterpolator.h"
#include <QString>
class Triangulation;
class TriangleInterpolator;
class QgsFeature;
/**Interpolation in a triangular irregular network*/
class ANALYSIS_EXPORT QgsTINInterpolator: public QgsInterpolator
{
public:
//describes the type of interpolation
enum TIN_INTERPOLATION
{
Linear,
CloughTocher
};
QgsTINInterpolator( const QList<LayerData>& inputData, TIN_INTERPOLATION interpolation = Linear, bool showProgressDialog = false );
~QgsTINInterpolator();
/**Calculates interpolation value for map coordinates x, y
@param x x-coordinate (in map units)
@param y y-coordinate (in map units)
@param result out: interpolation result
@return 0 in case of success*/
int interpolatePoint( double x, double y, double& result );
void setExportTriangulationToFile( bool e ) {mExportTriangulationToFile = e;}
void setTriangulationFilePath( const QString& filepath ) {mTriangulationFilePath = filepath;}
private:
Triangulation* mTriangulation;
TriangleInterpolator* mTriangleInterpolator;
bool mIsInitialized;
bool mShowProgressDialog;
/**If true: export triangulation to shapefile after initialisation*/
bool mExportTriangulationToFile;
/**File path to export the triangulation*/
QString mTriangulationFilePath;
/**Type of interpolation*/
TIN_INTERPOLATION mInterpolation;
/**Create dual edge triangulation*/
void initialize();
/**Inserts the vertices of a feature into the triangulation
@param f the feature
@param zCoord true if the z coordinate is the interpolation attribute
@param attr interpolation attribute index (if zCoord is false)
@param type point/structure line, break line
@return 0 in case of success, -1 if the feature could not be inserted because of numerical problems*/
int insertData( QgsFeature* f, bool zCoord, int attr, InputType type );
};
#endif
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