/usr/include/qgis/LinTriangleInterpolator.h is in libqgis-dev 2.0.1-2build2.
This file is owned by root:root, with mode 0o644.
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LinTriangleInterpolator.h - description
-------------------
copyright : (C) 2004 by Marco Hugentobler
email : mhugent@geo.unizh.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 LINTRIANGLEINTERPOLATOR_H
#define LINTRIANGLEINTERPOLATOR_H
#include "TriangleInterpolator.h"
#include "DualEdgeTriangulation.h"
/**LinTriangleInterpolator is a class which interpolates linearly on a triangulation*/
class ANALYSIS_EXPORT LinTriangleInterpolator : public TriangleInterpolator
{
public:
/**Default constructor*/
LinTriangleInterpolator();
/**Constructor with reference to a DualEdgeTriangulation object*/
LinTriangleInterpolator( DualEdgeTriangulation* tin );
/** Destructor*/
virtual ~LinTriangleInterpolator();
/**Calculates the normal vector and assigns it to vec*/
virtual bool calcNormVec( double x, double y, Vector3D* result );
/**Performs a linear interpolation in a triangle and assigns the x-,y- and z-coordinates to point*/
virtual bool calcPoint( double x, double y, Point3D* result );
/**Returns a pointer to the current Triangulation object*/
virtual DualEdgeTriangulation* getTriangulation() const;
/**Sets a Triangulation*/
virtual void setTriangulation( DualEdgeTriangulation* tin );
protected:
DualEdgeTriangulation* mTIN;
/**Calculates the first derivative with respect to x for a linear surface and assigns it to vec*/
virtual bool calcFirstDerX( double x, double y, Vector3D* result );
/**Calculates the first derivative with respect to y for a linear surface and assigns it to vec*/
virtual bool calcFirstDerY( double x, double y, Vector3D* result );
};
inline LinTriangleInterpolator::LinTriangleInterpolator()
{
}
inline LinTriangleInterpolator::LinTriangleInterpolator( DualEdgeTriangulation* tin ): mTIN( tin )
{
}
inline LinTriangleInterpolator::~LinTriangleInterpolator()
{
}
inline DualEdgeTriangulation* LinTriangleInterpolator::getTriangulation() const
{
return mTIN;
}
inline void LinTriangleInterpolator::setTriangulation( DualEdgeTriangulation* tin )
{
mTIN = tin;
}
#endif
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