OCC.Core.CPnts module

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

class CPnts_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>. <Resolution> is the error allowed in the computation. The computed point can be outside of the curve ‘s bounds. :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Resolution: :type Resolution: float :rtype: None* the algorithm computes a point on a curve <Curve> at the distance <Abscissa> from the point of parameter <U0>. <Resolution> is the error allowed in the computation. The computed point can be outside of the curve ‘s bounds. :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Resolution: :type Resolution: 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 <Resolution> is the error allowed in the computation. The computed point can be outside of the curve ‘s bounds. :param C: :type C: Adaptor3d_Curve :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :param Resolution: :type Resolution: 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 <Resolution> is the error allowed in the computation. The computed point can be outside of the curve ‘s bounds. :param C: :type C: Adaptor2d_Curve2d :param Abscissa: :type Abscissa: float :param U0: :type U0: float :param Ui: :type Ui: float :param Resolution: :type Resolution: float :rtype: None

AdvPerform()

• Computes the point at the distance <Abscissa> of the curve; performs more appropriate tolerance managment; to use this method in right way it is necessary to call empty consructor. then call method Init with Tolerance = Resolution, then call AdvPermorm. U0 is the parameter of the point from which the distance is measured and Ui is the starting value for the iterative process (should be close to the final solution).

  param Abscissa

  type Abscissa

  float

  param U0

  type U0

  float

  param Ui

  type Ui

  float

  param Resolution

  type Resolution

  float

  rtype

  None

Init()

• Initializes the resolution function with <C>.

  param C

  type C

  Adaptor3d_Curve

  rtype

  None* Initializes the resolution function with <C>.

  param C

  type C

  Adaptor2d_Curve2d

  rtype

  None* Initializes the resolution function with <C>.

  param C

  type C

  Adaptor3d_Curve

  param Tol

  type Tol

  float

  rtype

  None* Initializes the resolution function with <C>.

  param C

  type C

  Adaptor2d_Curve2d

  param Tol

  type Tol

  float

  rtype

  None* Initializes the resolution function with <C> between U1 and U2.

  param C

  type C

  Adaptor3d_Curve

  param U1

  type U1

  float

  param U2

  type U2

  float

  rtype

  None* Initializes the resolution function with <C> between U1 and U2.

  param C

  type C

  Adaptor2d_Curve2d

  param U1

  type U1

  float

  param U2

  type U2

  float

  rtype

  None* Initializes the resolution function with <C> between U1 and U2.

  param C

  type C

  Adaptor3d_Curve

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Tol

  type Tol

  float

  rtype

  None* Initializes the resolution function with <C> between U1 and U2.

  param C

  type C

  Adaptor2d_Curve2d

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Tol

  type Tol

  float

  rtype

  None

IsDone()

• True if the computation was successful, False otherwise.

  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> between <U1> and <U2>.

  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> between <U1> and <U2>.

  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> between <U1> and <U2> 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> between <U1> and <U2> with the given tolerance. creation of a indefinite AbscissaPoint.

  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 of the solution.

  rtype

  float

Perform()

• Computes the point at the distance <Abscissa> of the curve. U0 is the parameter of the point from which the distance is measured.

  param Abscissa

  type Abscissa

  float

  param U0

  type U0

  float

  param Resolution

  type Resolution

  float

  rtype

  None* Computes the point at the distance <Abscissa> of the curve. U0 is the parameter of the point from which the distance is measured and Ui is the starting value for the iterative process (should be close to the final solution).

  param Abscissa

  type Abscissa

  float

  param U0

  type U0

  float

  param Ui

  type Ui

  float

  param Resolution

  type Resolution

  float

  rtype

  None

SetParameter()

• Enforce the solution, used by GCPnts.

  param P

  type P

  float

  rtype

  None

property thisown

The membership flag

class CPnts_MyGaussFunction(*args)

Bases: OCC.Core.math.math_Function

Return type

None

Init()

• F is a pointer on a function D is a client data //! Each value is computed with F(D)

  param F

  type F

  CPnts_RealFunction

  param D

  type D

  Standard_Address

  rtype

  None

property thisown

The membership flag

class CPnts_MyRootFunction(*args)

Bases: OCC.Core.math.math_FunctionWithDerivative

Return type

None

Init()

• F is a pointer on a function D is a client data Order is the order of integration to use

  param F

  type F

  CPnts_RealFunction

  param D

  type D

  Standard_Address

  param Order

  type Order

  int

  rtype

  None* We want to solve Integral(X0,X,F(X,D)) = L

  param X0

  type X0

  float

  param L

  type L

  float

  rtype

  None* We want to solve Integral(X0,X,F(X,D)) = L with given tolerance

  param X0

  type X0

  float

  param L

  type L

  float

  param Tol

  type Tol

  float

  rtype

  None

property thisown

The membership flag

class CPnts_UniformDeflection(*args)

Bases: object

• creation of a indefinite UniformDeflection

  rtype

  None* Computes a uniform deflection distribution of points on the curve <C>. <Deflection> defines the constant deflection value. The algorithm computes the number of points and the points. The curve <C> must be at least C2 else the computation can fail. If just some parts of the curve is C2 it is better to give the parameters bounds and to use the below constructor . if <WithControl> is True, the algorithm controls the estimate deflection when the curve is singular at the point P(u),the algorithm computes the next point as P(u + Max(CurrentStep,Abs(LastParameter-FirstParameter))) if the singularity is at the first point ,the next point calculated is the P(LastParameter)

  param C

  type C

  Adaptor3d_Curve

  param Deflection

  type Deflection

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None* As above with 2d curve

  param C

  type C

  Adaptor2d_Curve2d

  param Deflection

  type Deflection

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None* Computes an uniform deflection distribution of points on a part of the curve <C>. Deflection defines the step between the points. <U1> and <U2> define the distribution span. <U1> and <U2> must be in the parametric range of the curve.

  param C

  type C

  Adaptor3d_Curve

  param Deflection

  type Deflection

  float

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None* As above with 2d curve

  param C

  type C

  Adaptor2d_Curve2d

  param Deflection

  type Deflection

  float

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None

Initialize()

• Initialize the algoritms with <C>, <Deflection>, <UStep>, <Resolution> and <WithControl>

  param C

  type C

  Adaptor3d_Curve

  param Deflection

  type Deflection

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None* Initialize the algoritms with <C>, <Deflection>, <UStep>, <Resolution> and <WithControl>

  param C

  type C

  Adaptor2d_Curve2d

  param Deflection

  type Deflection

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

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

  param C

  type C

  Adaptor3d_Curve

  param Deflection

  type Deflection

  float

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

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

  param C

  type C

  Adaptor2d_Curve2d

  param Deflection

  type Deflection

  float

  param U1

  type U1

  float

  param U2

  type U2

  float

  param Resolution

  type Resolution

  float

  param WithControl

  type WithControl

  bool

  rtype

  None

IsAllDone()

• To know if all the calculus were done successfully (ie all the points have been computed). The calculus can fail if the Curve is not C1 in the considered domain. Returns True if the calculus was successful.

  rtype

  bool

More()

• returns True if it exists a next Point.

  rtype

  bool

Next()

• go to the next Point.

  rtype

  None

Point()

• return the computed parameter

  rtype

  gp_Pnt

Value()

• return the computed parameter

  rtype

  float

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()