# Law_Linear Class Reference

Describes an linear evolution law. More...

`#include <Law_Linear.hxx>`

Inheritance diagram for Law_Linear:
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## Public Member Functions

Law_Linear ()
Constructs an empty linear evolution law. More...

void Set (const Standard_Real Pdeb, const Standard_Real Valdeb, const Standard_Real Pfin, const Standard_Real Valfin)
Defines this linear evolution law by assigning both: More...

GeomAbs_Shape Continuity () const override
Returns GeomAbs_CN. More...

Standard_Integer NbIntervals (const GeomAbs_Shape S) const override
Returns 1. More...

void Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const override
Stores in <T> the parameters bounding the intervals of continuity <S>. More...

Standard_Real Value (const Standard_Real X) override
Returns the value of this function at the point of parameter X. More...

void D1 (const Standard_Real X, Standard_Real &F, Standard_Real &D) override
Returns the value F and the first derivative D of this function at the point of parameter X. More...

void D2 (const Standard_Real X, Standard_Real &F, Standard_Real &D, Standard_Real &D2) override
Returns the value, first and second derivatives at parameter X. More...

Handle< Law_FunctionTrim (const Standard_Real PFirst, const Standard_Real PLast, const Standard_Real Tol) const override
Returns a law equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. It is usfule to determines the derivatives in these values <First> and <Last> if the Law is not Cn. More...

void Bounds (Standard_Real &PFirst, Standard_Real &PLast) override
Returns the parametric bounds of the function. More...

Public Member Functions inherited from Standard_Transient
Standard_Transient ()
Empty constructor. More...

Standard_Transient (const Standard_Transient &)
Copy constructor – does nothing. More...

Standard_Transientoperator= (const Standard_Transient &)
Assignment operator, needed to avoid copying reference counter. More...

virtual ~Standard_Transient ()
Destructor must be virtual. More...

virtual void Delete () const
Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > & DynamicType () const

Standard_Boolean IsInstance (const opencascade::handle< Standard_Type > &theType) const
Returns a true value if this is an instance of Type. More...

Standard_Boolean IsInstance (const Standard_CString theTypeName) const
Returns a true value if this is an instance of TypeName. More...

Standard_Boolean IsKind (const opencascade::handle< Standard_Type > &theType) const
Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean IsKind (const Standard_CString theTypeName) const
Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_TransientThis () const
Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer GetRefCount () const
Get the reference counter of this object. More...

void IncrementRefCounter () const
Increments the reference counter of this object. More...

Standard_Integer DecrementRefCounter () const
Decrements the reference counter of this object; returns the decremented value. More...

Public Types inherited from Standard_Transient
typedef void base_type

Static Public Member Functions inherited from Standard_Transient
static const char * get_type_name ()

static const opencascade::handle< Standard_Type > & get_type_descriptor ()
Returns type descriptor of Standard_Transient class. More...

## Detailed Description

Describes an linear evolution law.

## ◆ Law_Linear()

 Law_Linear::Law_Linear ( )

Constructs an empty linear evolution law.

## ◆ Bounds()

 void Law_Linear::Bounds ( Standard_Real & PFirst, Standard_Real & PLast )
overridevirtual

Returns the parametric bounds of the function.

Implements Law_Function.

## ◆ Continuity()

 GeomAbs_Shape Law_Linear::Continuity ( ) const
overridevirtual

Returns GeomAbs_CN.

Implements Law_Function.

## ◆ D1()

 void Law_Linear::D1 ( const Standard_Real X, Standard_Real & F, Standard_Real & D )
overridevirtual

Returns the value F and the first derivative D of this function at the point of parameter X.

Implements Law_Function.

## ◆ D2()

 void Law_Linear::D2 ( const Standard_Real X, Standard_Real & F, Standard_Real & D, Standard_Real & D2 )
overridevirtual

Returns the value, first and second derivatives at parameter X.

Implements Law_Function.

## ◆ Intervals()

 void Law_Linear::Intervals ( TColStd_Array1OfReal & T, const GeomAbs_Shape S ) const
overridevirtual

Stores in <T> the parameters bounding the intervals of continuity <S>.

The array must provide enough room to accomodate for the parameters. i.e. T.Length() > NbIntervals()

Implements Law_Function.

## ◆ NbIntervals()

 Standard_Integer Law_Linear::NbIntervals ( const GeomAbs_Shape S ) const
overridevirtual

Returns 1.

Implements Law_Function.

## ◆ Set()

 void Law_Linear::Set ( const Standard_Real Pdeb, const Standard_Real Valdeb, const Standard_Real Pfin, const Standard_Real Valfin )

Defines this linear evolution law by assigning both:

• the bounds Pdeb and Pfin of the parameter, and
• the values Valdeb and Valfin of the function at these two parametric bounds.

## ◆ Trim()

 Handle< Law_Function > Law_Linear::Trim ( const Standard_Real PFirst, const Standard_Real PLast, const Standard_Real Tol ) const
overridevirtual

Returns a law equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. It is usfule to determines the derivatives in these values <First> and <Last> if the Law is not Cn.

Implements Law_Function.

## ◆ Value()

 Standard_Real Law_Linear::Value ( const Standard_Real X )
overridevirtual

Returns the value of this function at the point of parameter X.

Implements Law_Function.

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