This is an implementation of a Clough-Tocher interpolator based on a triangular tessellation. More...

#include <CloughTocherInterpolator.h>

Inheritance diagram for CloughTocherInterpolator:

Public Member Functions
	CloughTocherInterpolator ()
	Standard constructor. More...

	CloughTocherInterpolator (NormVecDecorator *tin)
	Constructor with a pointer to the triangulation as argument. More...

virtual	~CloughTocherInterpolator ()
	Destructor. More...

virtual bool	calcNormVec (double x, double y, Vector3D *result) override
	Calculates the normal vector and assigns it to vec (not implemented at the moment) More...

virtual bool	calcPoint (double x, double y, Point3D *result) override
	Performs a linear interpolation in a triangle and assigns the x-,y- and z-coordinates to point. More...

virtual void	setTriangulation (NormVecDecorator *tin)

Public Member Functions inherited from TriangleInterpolator
virtual	~TriangleInterpolator ()

Protected Member Functions
double	calcBernsteinPoly (int n, int i, int j, int k, double u, double v, double w)
	Calculates the Bernsteinpolynomials to calculate the Beziertriangle. More...

void	init (double x, double y)
	Finds out, in which triangle the point with the coordinates x and y is. More...

Protected Attributes
Point3D	cp1

Point3D	cp10

Point3D	cp11

Point3D	cp12

Point3D	cp13

Point3D	cp14

Point3D	cp15

Point3D	cp16

Point3D	cp2

Point3D	cp3

Point3D	cp4

Point3D	cp5

Point3D	cp6

Point3D	cp7

Point3D	cp8

Point3D	cp9

double	der1X
	Derivative in x-direction at point1. More...

double	der1Y
	Derivative in y-direction at point1. More...

double	der2X
	Derivative in x-direction at point2. More...

double	der2Y
	Derivative in y-direction at point2. More...

double	der3X
	Derivative in x-direction at point3. More...

double	der3Y
	Derivative in y-direction at point3. More...

Point3D	lpoint1
	Stores point1 of the last run. More...

Point3D	lpoint2
	Stores point2 of the last run. More...

Point3D	lpoint3
	Stores point3 of the last run. More...

double	mEdgeTolerance
	Tolerance of the barycentric coordinates at the borders of the triangles (to prevent errors because of very small negativ baricentric coordinates) More...

NormVecDecorator *	mTIN
	Association with a triangulation object. More...

Point3D	point1
	First point of the triangle in x-,y-,z-coordinates. More...

Point3D	point2
	Second point of the triangle in x-,y-,z-coordinates. More...

Point3D	point3
	Third point of the triangle in x-,y-,z-coordinates. More...

Detailed Description

This is an implementation of a Clough-Tocher interpolator based on a triangular tessellation.

The derivatives orthogonal to the boundary curves are interpolated linearly along a triangle edge.

Definition at line 29 of file CloughTocherInterpolator.h.

Constructor & Destructor Documentation

◆ CloughTocherInterpolator() [1/2]

CloughTocherInterpolator::CloughTocherInterpolator ( )

Standard constructor.

◆ CloughTocherInterpolator() [2/2]

CloughTocherInterpolator::CloughTocherInterpolator ( NormVecDecorator * tin )

Constructor with a pointer to the triangulation as argument.

◆ ~CloughTocherInterpolator()

virtual CloughTocherInterpolator::~CloughTocherInterpolator ( )

virtual

Destructor.

Member Function Documentation

◆ calcBernsteinPoly()

double CloughTocherInterpolator::calcBernsteinPoly	(	int	n,
		int	i,
		int	j,
		int	k,
		double	u,
		double	v,
		double	w
	)

protected

Calculates the Bernsteinpolynomials to calculate the Beziertriangle.

'n' is three in the cubical case, 'i', 'j', 'k' are the indices of the controllpoint and 'u', 'v', 'w' are the barycentric coordinates of the point

◆ calcNormVec()

virtual bool CloughTocherInterpolator::calcNormVec	(	double	x,
		double	y,
		Vector3D *	result
	)

overridevirtual

Calculates the normal vector and assigns it to vec (not implemented at the moment)

Implements TriangleInterpolator.

◆ calcPoint()

virtual bool CloughTocherInterpolator::calcPoint	(	double	x,
		double	y,
		Point3D *	result
	)

overridevirtual

Performs a linear interpolation in a triangle and assigns the x-,y- and z-coordinates to point.

Implements TriangleInterpolator.

◆ init()

void CloughTocherInterpolator::init	(	double	x,
		double	y
	)

protected

Finds out, in which triangle the point with the coordinates x and y is.

◆ setTriangulation()

virtual void CloughTocherInterpolator::setTriangulation ( NormVecDecorator * tin )

virtual

Member Data Documentation

◆ cp1

Point3D CloughTocherInterpolator::cp1

protected

Definition at line 42 of file CloughTocherInterpolator.h.

◆ cp10

Point3D CloughTocherInterpolator::cp10

protected

Definition at line 51 of file CloughTocherInterpolator.h.

◆ cp11

Point3D CloughTocherInterpolator::cp11

protected

Definition at line 52 of file CloughTocherInterpolator.h.

◆ cp12

Point3D CloughTocherInterpolator::cp12

protected

Definition at line 53 of file CloughTocherInterpolator.h.

◆ cp13

Point3D CloughTocherInterpolator::cp13

protected

Definition at line 54 of file CloughTocherInterpolator.h.

◆ cp14

Point3D CloughTocherInterpolator::cp14

protected

Definition at line 55 of file CloughTocherInterpolator.h.

◆ cp15

Point3D CloughTocherInterpolator::cp15

protected

Definition at line 56 of file CloughTocherInterpolator.h.

◆ cp16

Point3D CloughTocherInterpolator::cp16

protected

Definition at line 57 of file CloughTocherInterpolator.h.

◆ cp2

Point3D CloughTocherInterpolator::cp2

protected

Definition at line 43 of file CloughTocherInterpolator.h.

◆ cp3

Point3D CloughTocherInterpolator::cp3

protected

Definition at line 44 of file CloughTocherInterpolator.h.

◆ cp4

Point3D CloughTocherInterpolator::cp4

protected

Definition at line 45 of file CloughTocherInterpolator.h.

◆ cp5

Point3D CloughTocherInterpolator::cp5

protected

Definition at line 46 of file CloughTocherInterpolator.h.

◆ cp6

Point3D CloughTocherInterpolator::cp6

protected

Definition at line 47 of file CloughTocherInterpolator.h.

◆ cp7

Point3D CloughTocherInterpolator::cp7

protected

Definition at line 48 of file CloughTocherInterpolator.h.

◆ cp8

Point3D CloughTocherInterpolator::cp8

protected

Definition at line 49 of file CloughTocherInterpolator.h.

◆ cp9

Point3D CloughTocherInterpolator::cp9

protected

Definition at line 50 of file CloughTocherInterpolator.h.

◆ der1X

double CloughTocherInterpolator::der1X

protected

Derivative in x-direction at point1.

Definition at line 59 of file CloughTocherInterpolator.h.

◆ der1Y

double CloughTocherInterpolator::der1Y

protected

Derivative in y-direction at point1.

Definition at line 61 of file CloughTocherInterpolator.h.

◆ der2X

double CloughTocherInterpolator::der2X

protected

Derivative in x-direction at point2.

Definition at line 63 of file CloughTocherInterpolator.h.

◆ der2Y

double CloughTocherInterpolator::der2Y

protected

Derivative in y-direction at point2.

Definition at line 65 of file CloughTocherInterpolator.h.

◆ der3X

double CloughTocherInterpolator::der3X

protected

Derivative in x-direction at point3.

Definition at line 67 of file CloughTocherInterpolator.h.

◆ der3Y

double CloughTocherInterpolator::der3Y

protected

Derivative in y-direction at point3.

Definition at line 69 of file CloughTocherInterpolator.h.

◆ lpoint1

Point3D CloughTocherInterpolator::lpoint1

protected

Stores point1 of the last run.

Definition at line 71 of file CloughTocherInterpolator.h.

◆ lpoint2

Point3D CloughTocherInterpolator::lpoint2

protected

Stores point2 of the last run.

Definition at line 73 of file CloughTocherInterpolator.h.

◆ lpoint3

Point3D CloughTocherInterpolator::lpoint3

protected

Stores point3 of the last run.

Definition at line 75 of file CloughTocherInterpolator.h.

◆ mEdgeTolerance

double CloughTocherInterpolator::mEdgeTolerance

protected

Tolerance of the barycentric coordinates at the borders of the triangles (to prevent errors because of very small negativ baricentric coordinates)

Definition at line 35 of file CloughTocherInterpolator.h.

◆ mTIN

NormVecDecorator* CloughTocherInterpolator::mTIN

protected

Association with a triangulation object.

Definition at line 33 of file CloughTocherInterpolator.h.

◆ point1

Point3D CloughTocherInterpolator::point1

protected

First point of the triangle in x-,y-,z-coordinates.

Definition at line 37 of file CloughTocherInterpolator.h.

◆ point2

Point3D CloughTocherInterpolator::point2

protected

Second point of the triangle in x-,y-,z-coordinates.

Definition at line 39 of file CloughTocherInterpolator.h.

◆ point3

Point3D CloughTocherInterpolator::point3

protected

Third point of the triangle in x-,y-,z-coordinates.

Definition at line 41 of file CloughTocherInterpolator.h.

The documentation for this class was generated from the following file:

/tmp/buildd/qgis-2.18.21+99unstable/src/analysis/interpolation/CloughTocherInterpolator.h

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CloughTocherInterpolator() [1/2]

◆ CloughTocherInterpolator() [2/2]

◆ ~CloughTocherInterpolator()

Member Function Documentation

◆ calcBernsteinPoly()

◆ calcNormVec()

◆ calcPoint()

◆ init()

◆ setTriangulation()

Member Data Documentation

◆ cp1

◆ cp10

◆ cp11

◆ cp12

◆ cp13

◆ cp14

◆ cp15

◆ cp16

◆ cp2

◆ cp3

◆ cp4

◆ cp5

◆ cp6

◆ cp7

◆ cp8

◆ cp9

◆ der1X

◆ der1Y

◆ der2X

◆ der2Y

◆ der3X

◆ der3Y

◆ lpoint1

◆ lpoint2

◆ lpoint3

◆ mEdgeTolerance

◆ mTIN

◆ point1

◆ point2

◆ point3