LocalAnalysis_CurveContinuity Class Reference

This class gives tools to check local continuity C0 C1 C2 G1 G2 between two points situated on two curves. More...

#include <LocalAnalysis_CurveContinuity.hxx>

Public Member Functions
	LocalAnalysis_CurveContinuity (const occ::handle< Geom_Curve > &Curv1, const double u1, const occ::handle< Geom_Curve > &Curv2, const double u2, const GeomAbs_Shape Order, const double EpsNul=0.001, const double EpsC0=0.001, const double EpsC1=0.001, const double EpsC2=0.001, const double EpsG1=0.001, const double EpsG2=0.001, const double Percent=0.01, const double Maxlen=10000)
	-u1 is the parameter of the point on Curv1 -u2 is the parameter of the point on Curv2 -Order is the required continuity: GeomAbs_C0 GeomAbs_C1 GeomAbs_C2 GeomAbs_G1 GeomAbs_G2
bool	IsDone () const
LocalAnalysis_StatusErrorType	StatusError () const
GeomAbs_Shape	ContinuityStatus () const
double	C0Value () const
double	C1Angle () const
double	C1Ratio () const
double	C2Angle () const
double	C2Ratio () const
double	G1Angle () const
double	G2Angle () const
double	G2CurvatureVariation () const
bool	IsC0 () const
bool	IsC1 () const
bool	IsC2 () const
bool	IsG1 () const
bool	IsG2 () const

Detailed Description

This class gives tools to check local continuity C0 C1 C2 G1 G2 between two points situated on two curves.

Constructor & Destructor Documentation

LocalAnalysis_CurveContinuity()

LocalAnalysis_CurveContinuity::LocalAnalysis_CurveContinuity	(	const occ::handle< Geom_Curve > &	Curv1,
		const double	u1,
		const occ::handle< Geom_Curve > &	Curv2,
		const double	u2,
		const GeomAbs_Shape	Order,
		const double	EpsNul = 0.001,
		const double	EpsC0 = 0.001,
		const double	EpsC1 = 0.001,
		const double	EpsC2 = 0.001,
		const double	EpsG1 = 0.001,
		const double	EpsG2 = 0.001,
		const double	Percent = 0.01,
		const double	Maxlen = 10000 )

-u1 is the parameter of the point on Curv1 -u2 is the parameter of the point on Curv2 -Order is the required continuity: GeomAbs_C0 GeomAbs_C1 GeomAbs_C2 GeomAbs_G1 GeomAbs_G2

-EpsNul is used to detect a vector with null magnitude (in mm)

-EpsC0 is used for C0 continuity to confuse two points (in mm)

-EpsC1 is an angular tolerance in radians used for C1 continuity to compare the angle between the first derivatives

-EpsC2 is an angular tolerance in radians used for C2 continuity to compare the angle between the second derivatives

-EpsG1 is an angular tolerance in radians used for G1 continuity to compare the angle between the tangents

-EpsG2 is an angular tolerance in radians used for G2 continuity to compare the angle between the normals

• percent: percentage of curvature variation (unitless) used for G2 continuity
• Maxlen is the maximum length of Curv1 or Curv2 in meters used to detect nul curvature (in mm)

the constructor computes the quantities which are necessary to check the continuity in the following cases:

case C0

• the distance between P1 and P2 with P1=Curv1 (u1) and P2=Curv2(u2)

case C1

• the angle between the first derivatives dCurv1(u1) dCurv2(u2) -----— and ------— du du
• the ratio between the magnitudes of the first derivatives

the angle value is between 0 and PI/2

case C2

• the angle between the second derivatives 2 2 d Curv1(u1) d Curv2(u2)

  ---

  2 2 du du

the angle value is between 0 and PI/2

• the ratio between the magnitudes of the second derivatives

case G1

the angle between the tangents at each point

the angle value is between 0 and PI/2

case G2

-the angle between the normals at each point

the angle value is between 0 and PI/2

• the relative variation of curvature:

|curvat1-curvat2|

1/2 (curvat1*curvat2)

where curvat1 is the curvature at the first point and curvat2 the curvature at the second point

Member Function Documentation

C0Value()

double LocalAnalysis_CurveContinuity::C0Value

(

)

const

C1Angle()

double LocalAnalysis_CurveContinuity::C1Angle

(

)

const

C1Ratio()

double LocalAnalysis_CurveContinuity::C1Ratio

(

)

const

C2Angle()

double LocalAnalysis_CurveContinuity::C2Angle

(

)

const

C2Ratio()

double LocalAnalysis_CurveContinuity::C2Ratio

(

)

const

ContinuityStatus()

GeomAbs_Shape LocalAnalysis_CurveContinuity::ContinuityStatus

(

)

const

G1Angle()

double LocalAnalysis_CurveContinuity::G1Angle

(

)

const

G2Angle()

double LocalAnalysis_CurveContinuity::G2Angle

(

)

const

G2CurvatureVariation()

double LocalAnalysis_CurveContinuity::G2CurvatureVariation

(

)

const

IsC0()

bool LocalAnalysis_CurveContinuity::IsC0

(

)

const

IsC1()

bool LocalAnalysis_CurveContinuity::IsC1

(

)

const

IsC2()

bool LocalAnalysis_CurveContinuity::IsC2

(

)

const

IsDone()

bool LocalAnalysis_CurveContinuity::IsDone

(

)

const

IsG1()

bool LocalAnalysis_CurveContinuity::IsG1

(

)

const

IsG2()

bool LocalAnalysis_CurveContinuity::IsG2

(

)

const

StatusError()

LocalAnalysis_StatusErrorType LocalAnalysis_CurveContinuity::StatusError

(

)

const

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

• LocalAnalysis_CurveContinuity.hxx