MeshCore::QuadraticFit Class Reference

Approximation of a quadratic surface into a given set of points. More...

#include <Approximation.h>

Inheritance diagram for MeshCore::QuadraticFit:

List of all members.

Public Member Functions
void	CalcEigenValues (float &dLambda1, float &dLambda2, float &dLambda3, Base::Vector3f &clEV1, Base::Vector3f &clEV2, Base::Vector3f &clEV3) const
	Aufstellen der Formanmatrix A und Berechnen der Eigenwerte.
void	CalcZValues (float x, float y, float &dZ1, float &dZ2) const
float	Fit ()
	Aufruf des Fit-Algorithmus.
float	GetCoeff (unsigned long ulIndex) const
	Übertragen der Quadric-Koeffizienten.
const float &	GetCoeffArray () const
	Übertragen der Koeffizientan als Referenz auf das interne Array.
bool	GetCurvatureInfo (float x, float y, float z, float &rfCurv0, float &rfcurv1)
bool	GetCurvatureInfo (float x, float y, float z, float &rfCurv0, float &rfCurv1, Base::Vector3f &rkDir0, Base::Vector3f &rkDir1, float &dDistance)
	Berechnen der Krümmungswerte der Quadric in einem bestimmten Punkt.
	QuadraticFit ()
	Construction.
virtual	~QuadraticFit ()
	Destruction.
Protected Attributes
float	_fCoeff [10]
	Ziel der Koeffizienten aus dem Fit.

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Detailed Description

Approximation of a quadratic surface into a given set of points.

The implicit form of the surface is defined by F(x,y,z) = a * x^2 + b * y^2 + c * z^2 + 2d * x * y + 2e * x * z + 2f * y * z + g * x + h * y + * i * z + k = 0 Depending on the parameters (a,..,k) this surface defines a sphere, ellipsoid, cylinder, cone and so on.

Definition at line 190 of file Approximation.h.

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Constructor & Destructor Documentation

MeshCore::QuadraticFit::QuadraticFit

(

)

[inline]

Construction.

Definition at line 196 of file Approximation.h.

virtual MeshCore::QuadraticFit::~QuadraticFit

(

)

[inline, virtual]

Destruction.

Definition at line 200 of file Approximation.h.

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Member Function Documentation

void QuadraticFit::CalcEigenValues	(	float &	dLambda1,
		float &	dLambda2,
		float &	dLambda3,
		Base::Vector3f &	clEV1,
		Base::Vector3f &	clEV2,
		Base::Vector3f &	clEV3
	)			const

Aufstellen der Formanmatrix A und Berechnen der Eigenwerte.

Parameters:

	dLambda1	Eigenwert 1
	dLambda2	Eigenwert 2
	dLambda3	Eigenwert 3
	clEV1	Eigenvektor 1
	clEV2	Eigenvektor 2
	clEV3	Eigenvektor 3

Definition at line 428 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, MeshCore::Approximation::Convert(), Wm4::Matrix3< Real >::EigenDecomposition(), SketcherExample::f, and Wm4::Matrix3< Real >::GetColumn().

void QuadraticFit::CalcZValues	(	float	x,
		float	y,
		float &	dZ1,
		float &	dZ2
	)			const

Definition at line 474 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, SketcherExample::f, FLOAT_MAX, and KDL::sqrt().

float QuadraticFit::Fit

(

)

[virtual]

Aufruf des Fit-Algorithmus.

Returns:

float Qualität des Fits.

Implements MeshCore::Approximation.

Definition at line 412 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, MeshCore::Approximation::_fLastResult, MeshCore::Approximation::CountPoints(), FLOAT_MAX, MeshCore::Approximation::GetMgcVectorArray(), and Wm4::QuadraticFit3< float >().

float QuadraticFit::GetCoeff

(

unsigned long

ulIndex

)

const

Übertragen der Quadric-Koeffizienten.

Parameters:

ulIndex

Nummer des Koeffizienten (0..9)

Returns:

float Wert des Koeffizienten

Definition at line 402 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, and FLOAT_MAX.

const float & QuadraticFit::GetCoeffArray

(

)

const

Übertragen der Koeffizientan als Referenz auf das interne Array.

Returns:

const float& Referenz auf das float-Array

Definition at line 397 of file Approximation.cpp.

References _fCoeff.

bool QuadraticFit::GetCurvatureInfo	(	float	x,
		float	y,
		float	z,
		float &	rfCurv0,
		float &	rfcurv1
	)

Definition at line 385 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, and MeshCore::FunctionContainer::CurvatureInfo().

bool QuadraticFit::GetCurvatureInfo	(	float	x,
		float	y,
		float	z,
		float &	rfCurv0,
		float &	rfCurv1,
		Base::Vector3f &	rkDir0,
		Base::Vector3f &	rkDir1,
		float &	dDistance
	)

Berechnen der Krümmungswerte der Quadric in einem bestimmten Punkt.

Parameters:

	x	X-Koordinate
	y	Y-Koordinate
	z	Z-Koordinate
	rfCurv0	1. Hauptkrümmung
	rfCurv1	2. Hauptkrümmung
	rkDir0	Richtung der 1. Hauptkrümmung
	rkDir1	Richtung der 2. Hauptkrümmung
	dDistance

Returns:

bool Fehlerfreie Ausfürhung = true, ansonsten false

Definition at line 365 of file Approximation.cpp.

References MeshCore::Approximation::_bIsFitted, _fCoeff, MeshCore::Approximation::Convert(), MeshCore::FunctionContainer::CurvatureInfo(), MeshCore::FunctionContainer::GetGradient(), and Base::Vector3< _Precision >::Length().

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Member Data Documentation

float MeshCore::QuadraticFit::_fCoeff[10] [protected]

Ziel der Koeffizienten aus dem Fit.

Definition at line 251 of file Approximation.h.

Referenced by CalcEigenValues(), CalcZValues(), Fit(), GetCoeff(), GetCoeffArray(), and GetCurvatureInfo().

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

• Approximation.h
• Approximation.cpp