LinTriangleInterpolator class

LinTriangleInterpolator is a class which interpolates linearly on a triangulation.

Base classes

class TriangleInterpolator: This is an interface for interpolator classes for triangulations.

LinTriangleInterpolator() defaulted: Default constructor.
LinTriangleInterpolator(DualEdgeTriangulation* tin): Constructor with reference to a DualEdgeTriangulation object.

auto calcNormVec(double x, double y, Vector3D* result) -> bool override: Calculates the normal vector and assigns it to vec.
auto calcPoint(double x, double y, QgsPoint& result) -> bool override: Performs a linear interpolation in a triangle and assigns the x-,y- and z-coordinates to point.
auto getTriangulation() const -> DualEdgeTriangulation* virtual: Returns a pointer to the current Triangulation object.
void setTriangulation(DualEdgeTriangulation* tin) virtual: Sets a Triangulation.

auto calcFirstDerX(double x, double y, Vector3D* result) -> bool virtual: Calculates the first derivative with respect to x for a linear surface and assigns it to vec.
auto calcFirstDerY(double x, double y, Vector3D* result) -> bool virtual: Calculates the first derivative with respect to y for a linear surface and assigns it to vec.