17 #ifndef LINTRIANGLEINTERPOLATOR_H    18 #define LINTRIANGLEINTERPOLATOR_H    22 #include "qgis_analysis.h"    50     virtual bool calcFirstDerX( 
double x, 
double y, 
Vector3D *result SIP_OUT );
    52     virtual bool calcFirstDerY( 
double x, 
double y, 
Vector3D *result SIP_OUT );
 LinTriangleInterpolator is a class which interpolates linearly on a triangulation. 
 
DualEdgeTriangulation is an implementation of a triangulation class based on the dual edge data struc...
 
DualEdgeTriangulation * mTIN
 
Class Vector3D represents a 3D-Vector, capable to store x-,y- and z-coordinates in double values...
 
This is an interface for interpolator classes for triangulations. 
 
Point geometry type, with support for z-dimension and m-values. 
 
virtual bool calcPoint(double x, double y, QgsPoint &result)=0
Performs a linear interpolation in a triangle and assigns the x-,y- and z-coordinates to point...
 
virtual void setTriangulation(DualEdgeTriangulation *tin)
Sets a Triangulation. 
 
virtual bool calcNormVec(double x, double y, Vector3D *result)=0
Calculates the normal vector and assigns it to vec. 
 
LinTriangleInterpolator()=default
Default constructor. 
 
virtual DualEdgeTriangulation * getTriangulation() const
Returns a pointer to the current Triangulation object.