OCC.Core.GCPnts module¶

GCPnts module, see official documentation at https://www.opencascade.com/doc/occt-7.4.0/refman/html/package_gcpnts.html

class GCPnts_AbscissaPoint(*args)¶

Bases: object

Return type: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0> with the given tolerance. :param Tol: :type Tol: float :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0> with the given tolerance. :param Tol: :type Tol: float :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. <Ui> is the starting value used in the iterative process which find the solution, it must be close to the final solution :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. <Ui> is the starting value used in the iterative process which find the solution, it must be closed to the final solution :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. <Ui> is the starting value used in the iterative process which find the solution, it must be close to the final solution :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :param Tol: :type Tol: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. <Ui> is the starting value used in the iterative process which find the solution, it must be close to the final solution :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :param Tol: :type Tol: float :rtype: None

IsDone()¶

True if the computation was successful, False otherwise. IsDone is a protection against: - non-convergence of the algorithm - querying the results before computation.

rtype

bool

static Length()¶

Computes the length of the Curve <C>.

param C

type C

Adaptor3d_Curve

rtype

float* Computes the length of the Curve <C>.

param C

type C

Adaptor2d_Curve2d

rtype

float* Computes the length of the Curve <C> with the given tolerance.

param C

type C

Adaptor3d_Curve

param Tol

type Tol

float

rtype

float* Computes the length of the Curve <C> with the given tolerance.

param C

type C

Adaptor2d_Curve2d

param Tol

type Tol

float

rtype

float* Computes the length of the Curve <C>.

param C

type C

Adaptor3d_Curve

param U1

type U1

float

param U2

type U2

float

rtype

float* Computes the length of the Curve <C>.

param C

type C

Adaptor2d_Curve2d

param U1

type U1

float

param U2

type U2

float

rtype

float* Computes the length of the Curve <C> with the given tolerance.

param C

type C

Adaptor3d_Curve

param U1

type U1

float

param U2

type U2

float

param Tol

type Tol

float

rtype

float* Computes the length of the Curve <C> with the given tolerance. Constructs an empty algorithm. This function is used only for initializing a framework to compute the length of a curve (or a series of curves). Warning The function IsDone will return the value false after the use of this function.

param C

type C

Adaptor2d_Curve2d

param U1

type U1

float

param U2

type U2

float

param Tol

type Tol

float

rtype

float

Parameter()¶

Returns the parameter on the curve of the point solution of this algorithm. Exceptions StdFail_NotDone if the computation was not successful, or was not done.

rtype

float

property thisown¶: The membership flag

class GCPnts_DistFunction2dMV(*args)¶

Bases: OCC.Core.math.math_MultipleVarFunction

Parameters

theCurvLinDist –

type theCurvLinDist: GCPnts_DistFunction2d
rtype: None

property thisown¶: The membership flag

class GCPnts_DistFunctionMV(*args)¶

Bases: OCC.Core.math.math_MultipleVarFunction

Parameters

theCurvLinDist –

type theCurvLinDist: GCPnts_DistFunction
rtype: None

property thisown¶: The membership flag

class GCPnts_QuasiUniformAbscissa(*args)¶

Bases: object

Constructs an empty algorithm. To define the problem to be solved, use the function Initialize.

rtype

None* Computes a uniform abscissa distribution of points - on the curve C where Abscissa is the curvilinear distance between two consecutive points of the distribution.

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

rtype

None* Computes a uniform abscissa distribution of points on the part of curve C limited by the two parameter values U1 and U2, where Abscissa is the curvilinear distance between two consecutive points of the distribution. The first point of the distribution is either the origin of curve C or the point of parameter U1. The following points are computed such that the curvilinear distance between two consecutive points is equal to Abscissa. The last point of the distribution is either the end point of curve C or the point of parameter U2. However the curvilinear distance between this last point and the point just preceding it in the distribution is, of course, generally not equal to Abscissa. Use the function IsDone to verify that the computation was successful, the function NbPoints to obtain the number of points of the computed distribution, and the function Parameter to read the parameter of each point. Warning The roles of U1 and U2 are inverted if U1 > U2 . Warning C is an adapted curve, that is, an object which is an interface between: - the services provided by either a 2D curve from the package Geom2d (in the case of an Adaptor2d_Curve2d curve) or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve), - and those required on the curve by the computation algorithm.

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

rtype

None* Computes a uniform abscissa distribution of points on the Curve2d <C>. <NbPoints> defines the nomber of desired points.

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

rtype

None* Computes a Uniform abscissa distribution of points on a part of the Curve2d <C>.

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

rtype

None

Initialize()¶

Initialize the algoritms with <C>, <NbPoints> and

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>.

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

rtype

None* Initialize the algoritms with <C>, <NbPoints> and

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>.

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

rtype

None

IsDone()¶

Returns true if the computation was successful. IsDone is a protection against: - non-convergence of the algorithm - querying the results before computation.

rtype

bool

NbPoints()¶

Returns the number of points of the distribution computed by this algorithm. This value is either: - the one imposed on the algorithm at the time of construction (or initialization), or - the one computed by the algorithm when the curvilinear distance between two consecutive points of the distribution is imposed on the algorithm at the time of construction (or initialization). Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

rtype

int

Parameter()¶

Returns the parameter of the point of index Index in the distribution computed by this algorithm. Warning Index must be greater than or equal to 1, and less than or equal to the number of points of the distribution. However, pay particular attention as this condition is not checked by this function. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

param Index

type Index

int

rtype

float

property thisown¶: The membership flag

class GCPnts_QuasiUniformDeflection(*args)¶

Bases: object

Constructs an empty algorithm. To define the problem to be solved, use the function Initialize.

rtype

None* Computes a QuasiUniform Deflection distribution of points on the Curve <C>.

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Computes a QuasiUniform Deflection distribution of points on the Curve <C>.

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Computes a QuasiUniform Deflection distribution of points on a part of the Curve <C>.

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Computes a QuasiUniform Deflection distribution of points on a part of the Curve <C>. This and the above algorithms compute a distribution of points: - on the curve C, or - on the part of curve C limited by the two parameter values U1 and U2, where the deflection resulting from the distributed points is not greater than Deflection. The first point of the distribution is either the origin of curve C or the point of parameter U1. The last point of the distribution is either the end point of curve C or the point of parameter U2. Intermediate points of the distribution are built such that the deflection is not greater than Deflection. Using the following evaluation of the deflection: if Pi and Pj are two consecutive points of the distribution, respectively of parameter ui and uj on the curve, the deflection is the distance between: - the mid-point of Pi and Pj (the center of the chord joining these two points) - and the point of mid-parameter of these two points (the point of parameter [(ui+uj) / 2 ] on curve C). Continuity, defaulted to GeomAbs_C1, gives the degree of continuity of the curve C. (Note that C is an Adaptor3d_Curve or an Adaptor2d_Curve2d object, and does not know the degree of continuity of the underlying curve). Use the function IsDone to verify that the computation was successful, the function NbPoints to obtain the number of points of the computed distribution, and the function Parameter to read the parameter of each point. Warning - The roles of U1 and U2 are inverted if U1 > U2. - Derivative functions on the curve are called according to Continuity. An error may occur if Continuity is greater than the real degree of continuity of the curve. Warning C is an adapted curve, i.e. an object which is an interface between: - the services provided by either a 2D curve from the package Geom2d (in the case of an Adaptor2d_Curve2d curve) or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve), - and those required on the curve by the computation algorithm.

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None

Deflection()¶

Returns the deflection between the curve and the polygon resulting from the points of the distribution computed by this algorithm. This is the value given to the algorithm at the time of construction (or initialization). Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

rtype

float

Initialize()¶

Initialize the algoritms with <C>, <Deflection>

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Initialize the algoritms with <C>, <Deflection>

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Initialize the algoritms with <C>, <Deflection>, <U1>,<U2>

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None* Initialize the algoritms with <C>, <Deflection>, – <U1>,<U2> This and the above algorithms initialize (or reinitialize) this algorithm and compute a distribution of points: - on the curve C, or - on the part of curve C limited by the two parameter values U1 and U2, where the deflection resulting from the distributed points is not greater than Deflection. The first point of the distribution is either the origin of curve C or the point of parameter U1. The last point of the distribution is either the end point of curve C or the point of parameter U2. Intermediate points of the distribution are built in such a way that the deflection is not greater than Deflection. Using the following evaluation of the deflection: if Pi and Pj are two consecutive points of the distribution, respectively of parameter ui and uj on the curve, the deflection is the distance between: - the mid-point of Pi and Pj (the center of the chord joining these two points) - and the point of mid-parameter of these two points (the point of parameter [(ui+uj) / 2 ] on curve C). Continuity, defaulted to GeomAbs_C1, gives the degree of continuity of the curve C. (Note that C is an Adaptor3d_Curve or an Adaptor2d_Curve2d object, and does not know the degree of continuity of the underlying curve). Use the function IsDone to verify that the computation was successful, the function NbPoints to obtain the number of points of the computed distribution, and the function Parameter to read the parameter of each point. Warning - The roles of U1 and U2 are inverted if U1 > U2. - Derivative functions on the curve are called according to Continuity. An error may occur if Continuity is greater than the real degree of continuity of the curve. Warning C is an adapted curve, i.e. an object which is an interface between: - the services provided by either a 2D curve from the package Geom2d (in the case of an Adaptor2d_Curve2d curve) or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve), and those required on the curve by the computation algorithm.

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param Continuity

default value is GeomAbs_C1

type Continuity

GeomAbs_Shape

rtype

None

IsDone()¶

Returns true if the computation was successful. IsDone is a protection against: - non-convergence of the algorithm - querying the results before computation.

rtype

bool

NbPoints()¶

Returns the number of points of the distribution computed by this algorithm. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

rtype

int

Parameter()¶

Returns the parameter of the point of index Index in the distribution computed by this algorithm. Warning Index must be greater than or equal to 1, and less than or equal to the number of points of the distribution. However, pay particular attention as this condition is not checked by this function. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

param Index

type Index

int

rtype

float

Value()¶

Returns the point of index Index in the distribution computed by this algorithm. Warning Index must be greater than or equal to 1, and less than or equal to the number of points of the distribution. However, pay particular attention as this condition is not checked by this function. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

param Index

type Index

int

rtype

gp_Pnt

property thisown¶: The membership flag

class GCPnts_TangentialDeflection(*args)¶

Bases: object

Return type: None:param C: :type C: Adaptor3d_Curve :param AngularDeflection: :type AngularDeflection: float :param CurvatureDeflection: :type CurvatureDeflection: float :param MinimumOfPoints: default value is 2 :type MinimumOfPoints: int :param UTol: default value is 1.0e-9 :type UTol: float :param theMinLen: default value is 1.0e-7 :type theMinLen: float :rtype: None:param C: :type C: Adaptor3d_Curve :param FirstParameter: :type FirstParameter: float :param LastParameter: :type LastParameter: float :param AngularDeflection: :type AngularDeflection: float :param CurvatureDeflection: :type CurvatureDeflection: float :param MinimumOfPoints: default value is 2 :type MinimumOfPoints: int :param UTol: default value is 1.0e-9 :type UTol: float :param theMinLen: default value is 1.0e-7 :type theMinLen: float :rtype: None:param C: :type C: Adaptor2d_Curve2d :param AngularDeflection: :type AngularDeflection: float :param CurvatureDeflection: :type CurvatureDeflection: float :param MinimumOfPoints: default value is 2 :type MinimumOfPoints: int :param UTol: default value is 1.0e-9 :type UTol: float :param theMinLen: default value is 1.0e-7 :type theMinLen: float :rtype: None:param C: :type C: Adaptor2d_Curve2d :param FirstParameter: :type FirstParameter: float :param LastParameter: :type LastParameter: float :param AngularDeflection: :type AngularDeflection: float :param CurvatureDeflection: :type CurvatureDeflection: float :param MinimumOfPoints: default value is 2 :type MinimumOfPoints: int :param UTol: default value is 1.0e-9 :type UTol: float :param theMinLen: default value is 1.0e-7 :type theMinLen: float :rtype: None

AddPoint()¶

Add point to already calculated points (or replace existing) Returns index of new added point or founded with parametric tolerance (replaced if theIsReplace is true)

param thePnt

type thePnt

gp_Pnt

param theParam

type theParam

float

param theIsReplace

default value is Standard_True

type theIsReplace

bool

rtype

int

static ArcAngularStep()¶

Computes angular step for the arc using the given parameters.

param theRadius

type theRadius

float

param theLinearDeflection

type theLinearDeflection

float

param theAngularDeflection

type theAngularDeflection

float

param theMinLength

type theMinLength

float

rtype

float

Initialize()¶

Parameters

C –

type C: Adaptor3d_Curve
param AngularDeflection
type AngularDeflection: float
param CurvatureDeflection
type CurvatureDeflection: float
param MinimumOfPoints: default value is 2
type MinimumOfPoints: int
param UTol: default value is 1.0e-9
type UTol: float
param theMinLen: default value is 1.0e-7
type theMinLen: float
rtype: None:param C:
type C: Adaptor3d_Curve
param FirstParameter
type FirstParameter: float
param LastParameter
type LastParameter: float
param AngularDeflection
type AngularDeflection: float
param CurvatureDeflection
type CurvatureDeflection: float
param MinimumOfPoints: default value is 2
type MinimumOfPoints: int
param UTol: default value is 1.0e-9
type UTol: float
param theMinLen: default value is 1.0e-7
type theMinLen: float
rtype: None:param C:
type C: Adaptor2d_Curve2d
param AngularDeflection
type AngularDeflection: float
param CurvatureDeflection
type CurvatureDeflection: float
param MinimumOfPoints: default value is 2
type MinimumOfPoints: int
param UTol: default value is 1.0e-9
type UTol: float
param theMinLen: default value is 1.0e-7
type theMinLen: float
rtype: None:param C:
type C: Adaptor2d_Curve2d
param FirstParameter
type FirstParameter: float
param LastParameter
type LastParameter: float
param AngularDeflection
type AngularDeflection: float
param CurvatureDeflection
type CurvatureDeflection: float
param MinimumOfPoints: default value is 2
type MinimumOfPoints: int
param UTol: default value is 1.0e-9
type UTol: float
param theMinLen: default value is 1.0e-7
type theMinLen: float
rtype: None

NbPoints()¶

Return type: int

Parameter()¶

Parameters

I –

type I: int
rtype: float

Value()¶

Parameters

I –

type I: int
rtype: gp_Pnt

property thisown¶: The membership flag

class GCPnts_UniformAbscissa(*args)¶

Bases: object

creation of a indefinite UniformAbscissa

rtype

None* Computes a uniform abscissa distribution of points on the Curve <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor3d_Curve

param Abscissa

type Abscissa

float

param Toler

default value is -1

type Toler

float

rtype

None* Computes a Uniform abscissa distribution of points on a part of the Curve <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor3d_Curve

param Abscissa

type Abscissa

float

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Computes a uniform abscissa distribution of points on the Curve <C>. <NbPoints> defines the nomber of desired points. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param Toler

default value is -1

type Toler

float

rtype

None* Computes a Uniform abscissa distribution of points on a part of the Curve <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Computes a uniform abscissa distribution of points on the Curve2d <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor2d_Curve2d

param Abscissa

type Abscissa

float

param Toler

default value is -1

type Toler

float

rtype

None* Computes a Uniform abscissa distribution of points on a part of the Curve2d <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor2d_Curve2d

param Abscissa

type Abscissa

float

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Computes a uniform abscissa distribution of points on the Curve2d <C>. <NbPoints> defines the nomber of desired points. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param Toler

default value is -1

type Toler

float

rtype

None* Computes a Uniform abscissa distribution of points on a part of the Curve2d <C>. Parameter Toler is equal Precision::Confusion by default. It Is used for more precise calculation of curve length

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None

Abscissa()¶

returne the current abscissa ie the distance between two consecutive points

rtype

float

Initialize()¶

Initialize the algoritms with <C>, <Abscissa>, <Toler>

param C

type C

Adaptor3d_Curve

param Abscissa

type Abscissa

float

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>, <Toler>

param C

type C

Adaptor3d_Curve

param Abscissa

type Abscissa

float

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <NbPoints>, <Toler> and

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>, <Toler>.

param C

type C

Adaptor3d_Curve

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <Toler>

param C

type C

Adaptor2d_Curve2d

param Abscissa

type Abscissa

float

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>, <Toler>

param C

type C

Adaptor2d_Curve2d

param Abscissa

type Abscissa

float

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <NbPoints>, <Toler> and

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param Toler

default value is -1

type Toler

float

rtype

None* Initialize the algoritms with <C>, <Abscissa>, <U1>, <U2>, <Toler>.

param C

type C

Adaptor2d_Curve2d

param NbPoints

type NbPoints

int

param U1

type U1

float

param U2

type U2

float

param Toler

default value is -1

type Toler

float

rtype

None

IsDone()¶

Return type: bool

NbPoints()¶

Return type: int

Parameter()¶

returns the computed Parameter of index <Index>.

param Index

type Index

int

rtype

float

property thisown¶: The membership flag

class GCPnts_UniformDeflection(*args)¶

Bases: object

Constructs an empty algorithm. To define the problem to be solved, use the function Initialize.

rtype

None* Computes a uniform Deflection distribution of points on the Curve <C>. if <WithControl> is True,the algorithm controls the estimate deflection

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Computes a uniform Deflection distribution of points on the Curve <C>. if <WithControl> is True,the algorithm controls the estimate deflection

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Computes a Uniform Deflection distribution of points on a part of the Curve <C>. if <WithControl> is True,the algorithm controls the estimate deflection

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Computes a Uniform Deflection distribution of points on a part of the Curve <C>. if <WithControl> is True,the algorithm controls the estimate deflection

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None

Deflection()¶

Returns the deflection between the curve and the polygon resulting from the points of the distribution computed by this algorithm. This value is the one given to the algorithm at the time of construction (or initialization). Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

rtype

float

Initialize()¶

Initialize the algoritms with <C>, <Deflection>

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Initialize the algoritms with <C>, <Deflection>

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Initialize the algoritms with <C>, <Deflection>, <U1>,<U2>

param C

type C

Adaptor3d_Curve

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None* Initialize the algoritms with <C>, <Deflection>, <U1>,<U2> This and the above methods initialize (or reinitialize) this algorithm and compute a distribution of points: - on the curve C, or - on the part of curve C limited by the two parameter values U1 and U2, where the maximum distance between C and the polygon that results from the points of the distribution is not greater than Deflection. The first point of the distribution is either the origin of curve C or the point of parameter U1. The last point of the distribution is either the end point of curve C or the point of parameter U2. Intermediate points of the distribution are built using interpolations of segments of the curve limited at the 2nd degree. The construction ensures, in a first step, that the chordal deviation for this interpolation of the curve is less than or equal to Deflection. However, it does not ensure that the chordal deviation for the curve itself is less than or equal to Deflection. To do this a check is necessary, which may generate (second step) additional intermediate points. This check is time consuming, and can be avoided by setting WithControl to false. Note that by default WithControl is true and check is performed. Use the function IsDone to verify that the computation was successful, the function NbPoints to obtain the number of points of the computed distribution, and the function Parameter to read the parameter of each point. Warning - C is necessary, ‘C2’ continuous. This property is not checked at construction time. - The roles of U1 and U2 are inverted if U1 > U2. Warning C is an adapted curve, i.e. an object which is an interface between: - the services provided by either a 2D curve from the package Geom2d (in the case of an Adaptor2d_Curve2d curve) or a 3D curve from the package Geom (in the case of an Adaptor3d_Curve curve), - and those required on the curve by the computation algorithm.

param C

type C

Adaptor2d_Curve2d

param Deflection

type Deflection

float

param U1

type U1

float

param U2

type U2

float

param WithControl

default value is Standard_True

type WithControl

bool

rtype

None

IsDone()¶

Returns true if the computation was successful. IsDone is a protection against: - non-convergence of the algorithm - querying the results before computation.

rtype

bool

NbPoints()¶

Returns the number of points of the distribution computed by this algorithm. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

rtype

int

Parameter()¶

Returns the parameter of the point of index Index in the distribution computed by this algorithm. Warning Index must be greater than or equal to 1, and less than or equal to the number of points of the distribution. However, pay particular attention as this condition is not checked by this function. Exceptions StdFail_NotDone if this algorithm has not been initialized, or if the computation was not successful.

param Index

type Index

int

rtype

float

Value()¶

Returns the point of index Index in the distribution computed by this algorithm. Warning Index must be greater than or equal to 1, and less than or equal to the number of points of the distribution. However, pay particular attention as this condition is not checked by this function. Exceptions StdFAil_NotDone if this algorithm has not been initialized, or if the computation was not successful.

param Index

type Index

int

rtype

gp_Pnt

property thisown¶: The membership flag

class SwigPyIterator(*args, **kwargs)¶

Bases: object

advance()¶

copy()¶

decr()¶

distance()¶

equal()¶

incr()¶

next()¶

previous()¶

property thisown¶: The membership flag

value()¶