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Open CASCADE Technology Reference Manual 8.0.0
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Open CASCADE Technology Reference Manual 8.0.0
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This type of Transformer allows to convert Spline Curves (IGES type 112) and Surfaces (IGES Type 126) to BSpline Curves (IGES type 114) and Surfac (IGES Type 128). All other entities are rebuilt as identical but on the basis of this conversion. More...
#include <IGESSelect_SplineToBSpline.hxx>
Public Member Functions | |
| IGESSelect_SplineToBSpline (const bool tryC2) | |
| Creates a Transformer SplineToBSpline. If <tryC2> is True, it will in addition try to upgrade continuity up to C2. | |
| bool | OptionTryC2 () const |
| Returns the option TryC2 given at creation time. | |
| bool | Perform (const Interface_Graph &G, const occ::handle< Interface_Protocol > &protocol, Interface_CheckIterator &checks, occ::handle< Interface_InterfaceModel > &newmod) override |
| Performs the transformation, if there is at least one Spline Curve (112) or Surface (126). Does nothing if there is none. | |
| bool | Updated (const occ::handle< Standard_Transient > &entfrom, occ::handle< Standard_Transient > &entto) const override |
| Returns the transformed entities. If original data contained no Spline Curve or Surface, the result is identity : <entto> = <entfrom> Else, the copied counterpart is returned : for a Spline Curve or Surface, it is a converted BSpline Curve or Surface. Else, it is the result of general service Copy (rebuilt as necessary by BSPlines replacing Splines). | |
| TCollection_AsciiString | Label () const override |
| Returns a text which defines the way a Transformer works : "Conversion Spline to BSpline" and as opted, " trying to upgrade continuity". | |
 Public Member Functions inherited from IFSelect_Transformer | |
| virtual bool | ChangeProtocol (occ::handle< Interface_Protocol > &newproto) const |
| This methods allows to declare that the Protocol applied to the new Model has changed. It applies to the last call to Perform. | |
| Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. | |
| virtual | ~Standard_Transient ()=default |
| Destructor must be virtual. | |
| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| Returns a type descriptor about this object. | |
| bool | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| Returns a true value if this is an instance of Type. | |
| bool | IsInstance (const char *const theTypeName) const |
| Returns a true value if this is an instance of TypeName. | |
| bool | 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. | |
| bool | IsKind (const char *const 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. | |
| Standard_Transient * | This () 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. | |
| int | GetRefCount () const noexcept |
| Get the reference counter of this object. | |
| void | IncrementRefCounter () noexcept |
| Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations. | |
| int | DecrementRefCounter () noexcept |
| Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement. | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. | |
Additional Inherited Members | |
| Public Types inherited from Standard_Transient | |
| typedef void | base_type |
| Returns a type descriptor about this object. | |
| Static Public Member Functions inherited from Standard_Transient | |
| static constexpr const char * | get_type_name () |
| Returns a type descriptor about this object. | |
| static const opencascade::handle< Standard_Type > & | get_type_descriptor () |
| Returns type descriptor of Standard_Transient class. | |
This type of Transformer allows to convert Spline Curves (IGES type 112) and Surfaces (IGES Type 126) to BSpline Curves (IGES type 114) and Surfac (IGES Type 128). All other entities are rebuilt as identical but on the basis of this conversion.
It also gives an option to, either convert as such (i.e. each starting part of the spline becomes a segment of the bspline, with continuity C0 between segments), or try to increase continuity as far as possible to C1 or to C2.
It does nothing if the starting model contains no Spline Curve (IGES Type 112) or Surface (IGES Type 126). Else, converting and rebuilding implies copying of entities.
| IGESSelect_SplineToBSpline::IGESSelect_SplineToBSpline | ( | const bool | tryC2 | ) |
Creates a Transformer SplineToBSpline. If <tryC2> is True, it will in addition try to upgrade continuity up to C2.
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overridevirtual |
Returns a text which defines the way a Transformer works : "Conversion Spline to BSpline" and as opted, " trying to upgrade continuity".
Implements IFSelect_Transformer.
| bool IGESSelect_SplineToBSpline::OptionTryC2 | ( | ) | const |
Returns the option TryC2 given at creation time.
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overridevirtual |
Performs the transformation, if there is at least one Spline Curve (112) or Surface (126). Does nothing if there is none.
Implements IFSelect_Transformer.
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overridevirtual |
Returns the transformed entities. If original data contained no Spline Curve or Surface, the result is identity : <entto> = <entfrom> Else, the copied counterpart is returned : for a Spline Curve or Surface, it is a converted BSpline Curve or Surface. Else, it is the result of general service Copy (rebuilt as necessary by BSPlines replacing Splines).
Implements IFSelect_Transformer.
1.10.0