OCC.Core.Expr module

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

class Expr_Absolute(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Abs of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArcCosine(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Arccos of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArcSine(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Arcsin of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArcTangent(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Arctan of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArgCosh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the ArgCosh of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArgSinh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the ArgSinh of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_ArgTanh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Argtanh of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Array1OfGeneralExpression(*args)

Bases: object

Assign()

ChangeFirst()

ChangeLast()

ChangeValue()

First()

Init()

IsAllocated()

IsDeletable()

IsEmpty()

Last()

Length()

Lower()

Move()

Resize()

Set()

SetValue()

Size()

Upper()

Value()

begin()

cbegin()

cend()

end()

next()

property thisown

The membership flag

class Expr_Array1OfNamedUnknown(*args)

Bases: object

Assign()

ChangeFirst()

ChangeLast()

ChangeValue()

First()

Init()

IsAllocated()

IsDeletable()

IsEmpty()

Last()

Length()

Lower()

Move()

Resize()

Set()

SetValue()

Size()

Upper()

Value()

begin()

cbegin()

cend()

end()

next()

property thisown

The membership flag

class Expr_Array1OfSingleRelation(*args)

Bases: object

Assign()

ChangeFirst()

ChangeLast()

ChangeValue()

First()

Init()

IsAllocated()

IsDeletable()

IsEmpty()

Last()

Length()

Lower()

Move()

Resize()

Set()

SetValue()

Size()

Upper()

Value()

begin()

cbegin()

cend()

end()

next()

property thisown

The membership flag

class Expr_BinaryExpression(*args, **kwargs)

Bases: OCC.Core.Expr.Expr_GeneralExpression

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

static DownCast(t)

FirstOperand()

Return type

opencascade::handle<Expr_GeneralExpression>

SecondOperand()

Return type

opencascade::handle<Expr_GeneralExpression>

SetFirstOperand()

• Sets first operand of <self> Raises InvalidOperand if exp = me

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

SetSecondOperand()

• Sets second operand of <self> Raises InvalidOperand if <exp> contains <self>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

property thisown

The membership flag

class Expr_BinaryFunction(*args)

Bases: OCC.Core.Expr.Expr_BinaryExpression

• Creates <self> as <func> (<exp1>,<exp2>). Raises exception if <func> is not binary.

  param func

  type func

  Expr_GeneralFunction

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

Function()

• Returns the function defining <self>.

  rtype

  opencascade::handle<Expr_GeneralFunction>

property thisown

The membership flag

class Expr_Cosh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the Cosh of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Cosine(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the cosine of Exp

  param Exp

  type Exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Difference(*args)

Bases: OCC.Core.Expr.Expr_BinaryExpression

• Creates the difference <exp1> - <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Different(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> # <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Division(*args)

Bases: OCC.Core.Expr.Expr_BinaryExpression

• Creates the division <exp1>/<exp2>

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Equal(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> = <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Exponential(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the exponential of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Exponentiate(*args)

Bases: OCC.Core.Expr.Expr_BinaryExpression

• Creates the exponential <exp1> ^ <exp2>

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_FunctionDerivative(*args)

Bases: OCC.Core.Expr.Expr_GeneralFunction

• Creates a FunctionDerivative of degree <deg> relative to the <withX> variable. Raises OutOfRange if <deg> lower or equal to zero.

  param func

  type func

  Expr_GeneralFunction

  param withX

  type withX

  Expr_NamedUnknown

  param deg

  type deg

  int

  rtype

  None

Degree()

• Returns the degree of derivation of <self>.

  rtype

  int

DerivVariable()

• Returns the derivation variable of <self>.

  rtype

  opencascade::handle<Expr_NamedUnknown>

Derivative()

• Returns Derivative of <self> for variable <var>.

  param var

  type var

  Expr_NamedUnknown

  rtype

  opencascade::handle<Expr_GeneralFunction>* Returns Derivative of <self> for variable <var> with degree <deg>.

  param var

  type var

  Expr_NamedUnknown

  param deg

  type deg

  int

  rtype

  opencascade::handle<Expr_GeneralFunction>

static DownCast(t)

Expression()

Return type

opencascade::handle<Expr_GeneralExpression>

Function()

• Returns the function of which <self> is the derivative.

  rtype

  opencascade::handle<Expr_GeneralFunction>

UpdateExpression()

Return type

None

property thisown

The membership flag

class Expr_GeneralExpression(*args, **kwargs)

Bases: OCC.Core.Standard.Standard_Transient

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

Contains()

• Tests if <exp> is contained in <self>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  bool

ContainsUnknowns()

• Tests if <self> contains NamedUnknowns.

  rtype

  bool

Copy()

• Returns a copy of <self> having the same unknowns and functions.

  rtype

  opencascade::handle<Expr_GeneralExpression>

Derivative()

• Returns the derivative on <X> unknown of <self>

  param X

  type X

  Expr_NamedUnknown

  rtype

  opencascade::handle<Expr_GeneralExpression>

static DownCast(t)

Evaluate()

• Returns the value of <self> (as a Real) by replacement of <vars> by <vals>. Raises NotEvaluable if <self> contains NamedUnknown not in <vars> or NumericError if result cannot be computed.

  param vars

  type vars

  Expr_Array1OfNamedUnknown

  param vals

  type vals

  TColStd_Array1OfReal

  rtype

  float

EvaluateNumeric()

• Returns the value of <self> (as a Real) by replacement of <vars> by <vals>. Raises NotEvaluable if <self> contains NamedUnknown not in <vars> or NumericError if result cannot be computed.

  rtype

  float

IsIdentical()

• Tests if <self> and <Other> define the same expression. Warning: This method does not include any simplification before testing. It could also be very slow; to be used carefully.

  param Other

  type Other

  Expr_GeneralExpression

  rtype

  bool

IsLinear()

• Tests if <self> is linear on every NamedUnknown it contains.

  rtype

  bool

IsShareable()

• Tests if <self> can be shared by one or more expressions or must be copied. This method returns False as a default value. To be redefined ( especially for NamedUnknown).

  rtype

  bool

NDerivative()

• Returns the <N>-th derivative on <X> unknown of <self>. Raise OutOfRange if N <= 0

  param X

  type X

  Expr_NamedUnknown

  param N

  type N

  int

  rtype

  opencascade::handle<Expr_GeneralExpression>

NbSubExpressions()

• Returns the number of sub-expressions contained in <self> ( >= 0)

  rtype

  int

Replace()

• Replaces all occurences of <var> with copies of <with> in <self>. Copies of <with> are made with the Copy() method. Raises InvalidOperand if <with> contains <self>.

  param var

  type var

  Expr_NamedUnknown

  param with

  type with

  Expr_GeneralExpression

  rtype

  void

ShallowSimplified()

• Returns a GeneralExpression after a simplification of the arguments of <self>.

  rtype

  opencascade::handle<Expr_GeneralExpression>

Simplified()

• Returns a GeneralExpression after replacement of NamedUnknowns by an associated expression and after values computation.

  rtype

  opencascade::handle<Expr_GeneralExpression>

String()

• returns a string representing <self> in a readable way.

  rtype

  TCollection_AsciiString

SubExpression()

• Returns the <I>-th sub-expression of <self> raises OutOfRange if <I> > NbSubExpressions(me)

  param I

  type I

  int

  rtype

  opencascade::handle<Expr_GeneralExpression>

property thisown

The membership flag

class Expr_GeneralFunction(*args, **kwargs)

Bases: OCC.Core.Standard.Standard_Transient

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

Copy()

• Returns a copy of <self> with the same form.

  rtype

  opencascade::handle<Expr_GeneralFunction>

Derivative()

• Returns Derivative of <self> for variable <var>.

  param var

  type var

  Expr_NamedUnknown

  rtype

  opencascade::handle<Expr_GeneralFunction>* Returns Derivative of <self> for variable <var> with degree <deg>.

  param var

  type var

  Expr_NamedUnknown

  param deg

  type deg

  int

  rtype

  opencascade::handle<Expr_GeneralFunction>

static DownCast(t)

Evaluate()

• Computes the value of <self> with the given variables. Raises NotEvaluable if <vars> does not match all variables of <self>.

  param vars

  type vars

  Expr_Array1OfNamedUnknown

  param vals

  type vals

  TColStd_Array1OfReal

  rtype

  float

GetStringName()

Return type

TCollection_AsciiString

IsIdentical()

• Tests if <self> and <func> are similar functions (same name and same used expression).

  param func

  type func

  Expr_GeneralFunction

  rtype

  bool

IsLinearOnVariable()

• Tests if <self> is linear on variable on range <index>

  param index

  type index

  int

  rtype

  bool

NbOfVariables()

• Returns the number of variables of <self>.

  rtype

  int

Variable()

• Returns the variable denoted by <index> in <self>. Raises OutOfRange if index > NbOfVariables.

  param index

  type index

  int

  rtype

  opencascade::handle<Expr_NamedUnknown>

property thisown

The membership flag

class Expr_GeneralRelation(*args, **kwargs)

Bases: OCC.Core.Standard.Standard_Transient

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

Contains()

• Tests if <exp> contains <var>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  bool

Copy()

• Returns a copy of <self> having the same unknowns and functions.

  rtype

  opencascade::handle<Expr_GeneralRelation>

static DownCast(t)

IsLinear()

• Tests if <self> is linear between its NamedUnknowns.

  rtype

  bool

IsSatisfied()

• Returns the current status of the relation

  rtype

  bool

NbOfSingleRelations()

• Returns the number of SingleRelations contained in <self>.

  rtype

  int

NbOfSubRelations()

• Returns the number of relations contained in <self>.

  rtype

  int

Replace()

• Replaces all occurences of <var> with <with> in <self>.

  param var

  type var

  Expr_NamedUnknown

  param with

  type with

  Expr_GeneralExpression

  rtype

  void

Simplified()

• Returns a GeneralRelation after replacement of NamedUnknowns by an associated expression, and after values computation.

  rtype

  opencascade::handle<Expr_GeneralRelation>

Simplify()

• Replaces NamedUnknowns by associated expressions, and computes values in <self>.

  rtype

  void

String()

• returns a string representing <self> in a readable way.

  rtype

  TCollection_AsciiString

SubRelation()

• Returns the relation denoted by <index> in <self>. An exception is raised if <index> is out of range.

  param index

  type index

  int

  rtype

  opencascade::handle<Expr_GeneralRelation>

property thisown

The membership flag

class Expr_GreaterThan(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> > <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_GreaterThanOrEqual(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> >= <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_LessThan(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> < <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_LessThanOrEqual(*args)

Bases: OCC.Core.Expr.Expr_SingleRelation

• Creates the relation <exp1> <= <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_LogOf10(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the base 10 logarithm of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_LogOfe(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the natural logarithm of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_MapOfNamedUnknown(*args)

Bases: object

Add()

Assign()

Clear()

Contains()

Exchange()

FindIndex()

FindKey()

ReSize()

RemoveFromIndex()

RemoveKey()

RemoveLast()

Set()

Size()

Substitute()

Swap()

cbegin()

cend()

property thisown

The membership flag

class Expr_NamedConstant(*args)

Bases: OCC.Core.Expr.Expr_NamedExpression

• Creates a constant value of name <name> and value <value>.

  param name

  type name

  TCollection_AsciiString

  param value

  type value

  float

  rtype

  None

static DownCast(t)

GetValue()

Return type

float

property thisown

The membership flag

class Expr_NamedExpression(*args, **kwargs)

Bases: OCC.Core.Expr.Expr_GeneralExpression

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

static DownCast(t)

GetName()

Return type

TCollection_AsciiString

SetName()

Parameters

name –

type name

TCollection_AsciiString

rtype

None

property thisown

The membership flag

class Expr_NamedFunction(*args)

Bases: OCC.Core.Expr.Expr_GeneralFunction

• Creates a function of given variables <vars> with name <name> defined by the expression <exp>.

  param name

  type name

  TCollection_AsciiString

  param exp

  type exp

  Expr_GeneralExpression

  param vars

  type vars

  Expr_Array1OfNamedUnknown

  rtype

  None

Derivative()

• Returns Derivative of <self> for variable <var>.

  param var

  type var

  Expr_NamedUnknown

  rtype

  opencascade::handle<Expr_GeneralFunction>* Returns Derivative of <self> for variable <var> with degree <deg>.

  param var

  type var

  Expr_NamedUnknown

  param deg

  type deg

  int

  rtype

  opencascade::handle<Expr_GeneralFunction>

static DownCast(t)

Expression()

• Returns equivalent expression of <self>.

  rtype

  opencascade::handle<Expr_GeneralExpression>

GetName()

• Returns the name assigned to <self>

  rtype

  TCollection_AsciiString

SetExpression()

• Modifies expression of <self>. Warning: Beware of derivatives. See FunctionDerivative

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

SetName()

• Sets the name <newname> to <self>.

  param newname

  type newname

  TCollection_AsciiString

  rtype

  None

property thisown

The membership flag

class Expr_NamedUnknown(*args)

Bases: OCC.Core.Expr.Expr_NamedExpression

Parameters

name –

type name

TCollection_AsciiString

rtype

None

Assign()

• Assigns <self> to <exp> expression. Raises exception if <exp> refers to <self>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

AssignedExpression()

• If exists, returns the assigned expression. An exception is raised if the expression does not exist.

  rtype

  opencascade::handle<Expr_GeneralExpression>

Deassign()

• Supresses the assigned expression

  rtype

  None

static DownCast(t)

IsAssigned()

• Tests if an expression is assigned to <self>.

  rtype

  bool

property thisown

The membership flag

class Expr_NumericValue(*args)

Bases: OCC.Core.Expr.Expr_GeneralExpression

Parameters

val –

type val

float

rtype

None

static DownCast(t)

GetValue()

Return type

float

SetValue()

Parameters

val –

type val

float

rtype

None

property thisown

The membership flag

class Expr_PolyExpression(*args, **kwargs)

Bases: OCC.Core.Expr.Expr_GeneralExpression

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

static DownCast(t)

NbOperands()

• returns the number of operands contained in <self>

  rtype

  int

Operand()

• Returns the <index>-th operand used in <self>. An exception is raised if index is out of range

  param index

  type index

  int

  rtype

  opencascade::handle<Expr_GeneralExpression>

SetOperand()

• Sets the <index>-th operand used in <self>. An exception is raised if <index> is out of range Raises InvalidOperand if <exp> contains <self>.

  param exp

  type exp

  Expr_GeneralExpression

  param index

  type index

  int

  rtype

  None

property thisown

The membership flag

class Expr_PolyFunction(*args)

Bases: OCC.Core.Expr.Expr_PolyExpression

• Creates <self> as <func>(<exps_1>,<exps_2>,…,<exps_n>)

  param func

  type func

  Expr_GeneralFunction

  param exps

  type exps

  Expr_Array1OfGeneralExpression

  rtype

  None

static DownCast(t)

Function()

• Returns the function defining <self>.

  rtype

  opencascade::handle<Expr_GeneralFunction>

property thisown

The membership flag

class Expr_Product(*args)

Bases: OCC.Core.Expr.Expr_PolyExpression

• Creates the product of all members of sequence <exps>

  param exps

  type exps

  Expr_SequenceOfGeneralExpression

  rtype

  None* Creates the product of <exp1> and <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_RUIterator(*args)

Bases: object

• Creates an iterator on every NamedUnknown contained in <rel>.

  param rel

  type rel

  Expr_GeneralRelation

  rtype

  None

More()

• Returns False if on other unknown remains.

  rtype

  bool

Next()

Return type

None

Value()

• Returns current NamedUnknown. Raises exception if no more unknowns remain.

  rtype

  opencascade::handle<Expr_NamedUnknown>

property thisown

The membership flag

class Expr_RelationIterator(*args)

Bases: object

Parameters

rel –

type rel

Expr_GeneralRelation

rtype

None

More()

• Returns False if no other relation remains.

  rtype

  bool

Next()

Return type

None

Value()

• Returns current basic relation. Exception is raised if no more relation remains.

  rtype

  opencascade::handle<Expr_SingleRelation>

property thisown

The membership flag

class Expr_SequenceOfGeneralExpression(*args)

Bases: object

Append()

Assign()

ChangeFirst()

ChangeLast()

ChangeValue()

Clear()

Exchange()

First()

InsertAfter()

InsertBefore()

IsEmpty()

Last()

Length()

Lower()

Prepend()

Remove()

Reverse()

Set()

SetValue()

Size()

Split()

Upper()

Value()

begin()

cbegin()

cend()

static delNode()

end()

property thisown

The membership flag

class Expr_SequenceOfGeneralRelation(*args)

Bases: object

Append()

Assign()

ChangeFirst()

ChangeLast()

ChangeValue()

Clear()

Exchange()

First()

InsertAfter()

InsertBefore()

IsEmpty()

Last()

Length()

Lower()

Prepend()

Remove()

Reverse()

Set()

SetValue()

Size()

Split()

Upper()

Value()

begin()

cbegin()

cend()

static delNode()

end()

property thisown

The membership flag

class Expr_Sine(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the sine of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_SingleRelation(*args, **kwargs)

Bases: OCC.Core.Expr.Expr_GeneralRelation

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

static DownCast(t)

FirstMember()

• Returns the first member of the relation

  rtype

  opencascade::handle<Expr_GeneralExpression>

SecondMember()

• Returns the second member of the relation

  rtype

  opencascade::handle<Expr_GeneralExpression>

SetFirstMember()

• Defines the first member of the relation

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

SetSecondMember()

• Defines the second member of the relation

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

property thisown

The membership flag

class Expr_Sinh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the sinh of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Square(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the square of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_SquareRoot(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the square root of <exp>

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Sum(*args)

Bases: OCC.Core.Expr.Expr_PolyExpression

• Creates the sum of all the members of sequence <exps>.

  param exps

  type exps

  Expr_SequenceOfGeneralExpression

  rtype

  None* Creates the sum of <exp1> and <exp2>.

  param exp1

  type exp1

  Expr_GeneralExpression

  param exp2

  type exp2

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_SystemRelation(*args)

Bases: OCC.Core.Expr.Expr_GeneralRelation

• Creates a system with one relation

  param relation

  type relation

  Expr_GeneralRelation

  rtype

  None

Add()

• Appends <relation> in the list of components of <self>.

  param relation

  type relation

  Expr_GeneralRelation

  rtype

  None

static DownCast(t)

Remove()

Parameters

relation –

type relation

Expr_GeneralRelation

rtype

None

property thisown

The membership flag

class Expr_Tangent(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the tangent of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_Tanh(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates the hyperbolic tangent of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_UnaryExpression(*args, **kwargs)

Bases: OCC.Core.Expr.Expr_GeneralExpression

• Empty constructor

Return type

None* Copy constructor – does nothing

Parameters

& (Standard_Transient) –

Return type

None

static DownCast(t)

Operand()

• Returns the operand used

  rtype

  opencascade::handle<Expr_GeneralExpression>

SetOperand()

• Sets the operand used Raises InvalidOperand if <exp> contains <self>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

property thisown

The membership flag

class Expr_UnaryFunction(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Creates me as <func>(<exp>). Raises exception if <func> is not unary.

  param func

  type func

  Expr_GeneralFunction

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

Function()

• Returns the function defining <self>.

  rtype

  opencascade::handle<Expr_GeneralFunction>

property thisown

The membership flag

class Expr_UnaryMinus(*args)

Bases: OCC.Core.Expr.Expr_UnaryExpression

• Create the unary minus of <exp>.

  param exp

  type exp

  Expr_GeneralExpression

  rtype

  None

static DownCast(t)

property thisown

The membership flag

class Expr_UnknownIterator(*args)

Bases: object

Parameters

exp –

type exp

Expr_GeneralExpression

rtype

None

More()

Return type

bool

Next()

Return type

None

Value()

Return type

opencascade::handle<Expr_NamedUnknown>

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()

class expr

Bases: object

static CopyShare()

Parameters

exp –

type exp

Expr_GeneralExpression

rtype

opencascade::handle<Expr_GeneralExpression>

static NbOfFreeVariables()

Parameters

exp –

type exp

Expr_GeneralExpression

rtype

int:param exp:

type exp

Expr_GeneralRelation

rtype

int

static Sign()

Parameters

val –

type val

float

rtype

float

property thisown

The membership flag