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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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defines IGESBSplineSurface, Type <128> Form <0-9> in package IGESGeom A parametric equation obtained by dividing two summations involving weights (which are real numbers), the control points, and B-Spline basis functions More...
#include <IGESGeom_BSplineSurface.hxx>
Public Member Functions | |
| IGESGeom_BSplineSurface () | |
| void | Init (const int anIndexU, const int anIndexV, const int aDegU, const int aDegV, const bool aCloseU, const bool aCloseV, const bool aPolynom, const bool aPeriodU, const bool aPeriodV, const occ::handle< NCollection_HArray1< double > > &allKnotsU, const occ::handle< NCollection_HArray1< double > > &allKnotsV, const occ::handle< NCollection_HArray2< double > > &allWeights, const occ::handle< NCollection_HArray2< gp_XYZ > > &allPoles, const double aUmin, const double aUmax, const double aVmin, const double aVmax) |
| This method is used to set the fields of the class BSplineSurface. | |
| void | SetFormNumber (const int form) |
| Changes FormNumber (indicates the Shape of the Surface) Error if not in range [0-9]. | |
| int | UpperIndexU () const |
| returns the upper index of the first sum (U) | |
| int | UpperIndexV () const |
| returns the upper index of the second sum (V) | |
| int | DegreeU () const |
| returns degree of first set of basis functions | |
| int | DegreeV () const |
| returns degree of second set of basis functions | |
| bool | IsClosedU () const |
| True if closed in U direction else False. | |
| bool | IsClosedV () const |
| True if closed in V direction else False. | |
| bool | IsPolynomial (const bool flag=false) const |
| True if polynomial, False if rational <flag> False (D) : computed from Weights <flag> True : recorded. | |
| bool | IsPeriodicU () const |
| True if periodic in U direction else False. | |
| bool | IsPeriodicV () const |
| True if periodic in V direction else False. | |
| int | NbKnotsU () const |
| returns number of knots in U direction KnotsU are numbered from -DegreeU | |
| int | NbKnotsV () const |
| returns number of knots in V direction KnotsV are numbered from -DegreeV | |
| double | KnotU (const int anIndex) const |
| returns the value of knot referred to by anIndex in U direction raises exception if anIndex < -DegreeU() or anIndex > (NbKnotsU() - DegreeU()) | |
| double | KnotV (const int anIndex) const |
| returns the value of knot referred to by anIndex in V direction raises exception if anIndex < -DegreeV() or anIndex > (NbKnotsV() - DegreeV()) | |
| int | NbPolesU () const |
| returns number of poles in U direction | |
| int | NbPolesV () const |
| returns number of poles in V direction | |
| double | Weight (const int anIndex1, const int anIndex2) const |
| returns the weight referred to by anIndex1, anIndex2 raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV() | |
| gp_Pnt | Pole (const int anIndex1, const int anIndex2) const |
| returns the control point referenced by anIndex1, anIndex2 raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV() | |
| gp_Pnt | TransformedPole (const int anIndex1, const int anIndex2) const |
| returns the control point referenced by anIndex1, anIndex2 after applying the Transf.Matrix raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV() | |
| double | UMin () const |
| returns starting value in the U direction | |
| double | UMax () const |
| returns ending value in the U direction | |
| double | VMin () const |
| returns starting value in the V direction | |
| double | VMax () const |
| returns ending value in the V direction | |
 Public Member Functions inherited from IGESData_IGESEntity | |
| IGESData_IGESType | IGESType () const |
| gives IGES typing info (includes "Type" and "Form" data) | |
| int | TypeNumber () const |
| gives IGES Type Number (often coupled with Form Number) | |
| int | FormNumber () const |
| Returns the form number for that type of an IGES entity. The default form number is 0. | |
| occ::handle< IGESData_IGESEntity > | DirFieldEntity (const int fieldnum) const |
| Returns the Entity which has been recorded for a given Field Number, i.e. without any cast. Maps with: 3 : Structure 4 : LineFont 5 : LevelList 6 : View 7 : Transf(ormation Matrix) 8 : LabelDisplay 13 : Color. Other values give a null handle It can then be of any kind, while specific items have a Type. | |
| bool | HasStructure () const |
| returns True if an IGESEntity is defined with a Structure (it is normally reserved for certain classes, such as Macros) | |
| occ::handle< IGESData_IGESEntity > | Structure () const |
| Returns Structure (used by some types of IGES Entities only) Returns a Null Handle if Structure is not defined. | |
| virtual IGESData_DefType | DefLineFont () const |
| Returns the definition status of LineFont. | |
| int | RankLineFont () const |
| Returns LineFont definition as an Integer (if defined as Rank) If LineFont is defined as an Entity, returns a negative value. | |
| occ::handle< IGESData_LineFontEntity > | LineFont () const |
| Returns LineFont as an Entity (if defined as Reference) Returns a Null Handle if DefLineFont is not "DefReference". | |
| virtual IGESData_DefList | DefLevel () const |
| Returns the definition status of Level. | |
| int | Level () const |
| Returns the level the entity belongs to. Returns -1 if the entity belongs to more than one level. | |
| occ::handle< IGESData_LevelListEntity > | LevelList () const |
| Returns LevelList if Level is defined as a list. Returns a null handle if DefLevel is not DefSeveral. | |
| virtual IGESData_DefList | DefView () const |
| Returns the definition status of the view. This can be: none, one or several. | |
| occ::handle< IGESData_ViewKindEntity > | View () const |
| Returns the view of this IGES entity. This view can be a single view or a list of views. Warning A null handle is returned if the view is not defined. | |
| occ::handle< IGESData_ViewKindEntity > | SingleView () const |
| Returns the view as a single view if it was defined as such and not as a list of views. Warning A null handle is returned if DefView does not have the value DefOne. | |
| occ::handle< IGESData_ViewKindEntity > | ViewList () const |
| Returns the view of this IGES entity as a list. Warning A null handle is returned if the definition status does not have the value DefSeveral. | |
| bool | HasTransf () const |
| Returns True if a Transformation Matrix is defined. | |
| occ::handle< IGESData_TransfEntity > | Transf () const |
| Returns the Transformation Matrix (under IGES definition) Returns a Null Handle if there is none for a more complete use, see Location & CompoundLocation. | |
| bool | HasLabelDisplay () const |
| Returns True if a LabelDisplay mode is defined for this entity. | |
| occ::handle< IGESData_LabelDisplayEntity > | LabelDisplay () const |
| Returns the Label Display Associativity Entity if there is one. Returns a null handle if there is none. | |
| int | BlankStatus () const |
| gives Blank Status (0 visible, 1 blanked) | |
| int | SubordinateStatus () const |
| gives Subordinate Switch (0-1-2-3) | |
| int | UseFlag () const |
| gives Entity's Use Flag (0 to 5) | |
| int | HierarchyStatus () const |
| gives Hierarchy status (0-1-2) | |
| int | LineWeightNumber () const |
| Returns the LineWeight Number (0 not defined), see also LineWeight. | |
| double | LineWeight () const |
| Returns the true Line Weight, computed from LineWeightNumber and Global Parameter in the Model by call to SetLineWeight. | |
| virtual IGESData_DefType | DefColor () const |
| Returns the definition status of Color. | |
| int | RankColor () const |
| Returns the color definition as an integer value if the color was defined as a rank. Warning A negative value is returned if the color was defined as an entity. | |
| occ::handle< IGESData_ColorEntity > | Color () const |
| Returns the IGES entity which describes the color of the entity. Returns a null handle if this entity was defined as an integer. | |
| bool | CResValues (char *res1, char *res2) const |
| returns "reserved" alphanumeric values res1 and res2 res1 and res2 have to be reserved as Character[9 at least] (remark : their content is changed) returned values are ended by null character in 9th returned Boolean is False if res1 and res2 are blank, true else | |
| bool | HasShortLabel () const |
| Returns true if a short label is defined. A short label is a non-blank 8-character string. | |
| occ::handle< TCollection_HAsciiString > | ShortLabel () const |
| Returns the label value for this IGES entity as a string. Warning If the label is blank, this string is null. | |
| virtual bool | HasSubScriptNumber () const |
| Returns true if a subscript number is defined. A subscript number is an integer used to identify a label. | |
| int | SubScriptNumber () const |
| Returns the integer subscript number used to identify this IGES entity. Warning 0 is returned if no subscript number is defined for this IGES entity. | |
| void | InitDirFieldEntity (const int fieldnum, const occ::handle< IGESData_IGESEntity > &ent) |
| Initializes a directory field as an Entity of any kind See DirFieldEntity for more details. | |
| void | InitTransf (const occ::handle< IGESData_TransfEntity > &ent) |
| Initializes Transf, or erases it if <ent> is given Null. | |
| void | InitView (const occ::handle< IGESData_ViewKindEntity > &ent) |
| Initializes View, or erases it if <ent> is given Null. | |
| void | InitLineFont (const occ::handle< IGESData_LineFontEntity > &ent, const int rank=0) |
| Initializes LineFont : if <ent> is not Null, it gives LineFont, else <rank> gives or erases (if zero) RankLineFont. | |
| void | InitLevel (const occ::handle< IGESData_LevelListEntity > &ent, const int val=0) |
| Initializes Level : if <ent> is not Null, it gives LevelList, else <val> gives or erases (if zero) unique Level. | |
| void | InitColor (const occ::handle< IGESData_ColorEntity > &ent, const int rank=0) |
| Initializes Color data : if <ent> is not Null, it gives Color, else <rank> gives or erases (if zero) RankColor. | |
| void | InitStatus (const int blank, const int subordinate, const int useflag, const int hierarchy) |
| Initializes the Status of Directory Part. | |
| void | SetLabel (const occ::handle< TCollection_HAsciiString > &label, const int sub=-1) |
| Sets a new Label to an IGES Entity If is given, it sets value of SubScriptNumber else, SubScriptNumber is erased. | |
| void | InitMisc (const occ::handle< IGESData_IGESEntity > &str, const occ::handle< IGESData_LabelDisplayEntity > &lab, const int weightnum) |
| Initializes various data (those not yet seen above), or erases them if they are given as Null (Zero for <weightnum>) : <str> for Structure, <lab> for LabelDisplay, and <weightnum> for WeightNumber. | |
| bool | HasOneParent () const |
| Returns True if an entity has one and only one parent, defined by a SingleParentEntity Type Associativity (explicit sharing). Thus, implicit sharing remains defined at model level (see class ToolLocation) | |
| occ::handle< IGESData_IGESEntity > | UniqueParent () const |
| Returns the Unique Parent (in the sense given by HasOneParent) Error if there is none or several. | |
| gp_GTrsf | Location () const |
| Returns Location given by Transf in Directory Part (see above) It must be considered for local definition : if the Entity is set in a "Parent", that one can add its one Location, but this is not taken in account here : see CompoundLocation for that. If no Transf is defined, returns Identity If Transf is itself compound, gives the final result. | |
| gp_GTrsf | VectorLocation () const |
| Returns Location considered for Vectors, i.e. without its Translation Part. As Location, it gives local definition. | |
| gp_GTrsf | CompoundLocation () const |
| Returns Location by taking in account a Parent which has its own Location : that one will be combined to that of <me> The Parent is considered only if HasOneParent is True, else it is ignored and CompoundLocation = Location. | |
| bool | HasName () const |
| says if a Name is defined, as Short Label or as Name Property (Property is looked first, else ShortLabel is considered) | |
| occ::handle< TCollection_HAsciiString > | NameValue () const |
| returns Name value as a String (Property Name or ShortLabel) if SubNumber is defined, it is concatenated after ShortLabel as follows label(number). Ignored with a Property Name | |
| bool | ArePresentAssociativities () const |
| Returns True if the Entity is defined with an Associativity list, even empty (that is, file contains its length 0) Else, the file contained NO idencation at all about this list. | |
| int | NbAssociativities () const |
| gives number of recorded associativities (0 no list defined) | |
| Interface_EntityIterator | Associativities () const |
| Returns the Associativity List under the form of an EntityIterator. | |
| int | NbTypedAssociativities (const occ::handle< Standard_Type > &atype) const |
| gives how many Associativities have a given type | |
| occ::handle< IGESData_IGESEntity > | TypedAssociativity (const occ::handle< Standard_Type > &atype) const |
| returns the Associativity of a given Type (if only one exists) Error if none or more than one | |
| void | Associate (const occ::handle< IGESData_IGESEntity > &ent) const |
| Sets "me" in the Associativity list of another Entity. | |
| void | Dissociate (const occ::handle< IGESData_IGESEntity > &ent) const |
| Resets "me" from the Associativity list of another Entity. | |
| bool | ArePresentProperties () const |
| Returns True if the Entity is defined with a Property list, even empty (that is, file contains its length 0) Else, the file contained NO idencation at all about this list. | |
| int | NbProperties () const |
| Gives number of recorded properties (0 no list defined) | |
| Interface_EntityIterator | Properties () const |
| Returns Property List under the form of an EntityIterator. | |
| int | NbTypedProperties (const occ::handle< Standard_Type > &atype) const |
| gives how many Properties have a given type | |
| occ::handle< IGESData_IGESEntity > | TypedProperty (const occ::handle< Standard_Type > &atype, const int anum=0) const |
| returns the Property of a given Type Error if none or more than one | |
| void | AddProperty (const occ::handle< IGESData_IGESEntity > &ent) |
| Adds a Property in the list. | |
| void | RemoveProperty (const occ::handle< IGESData_IGESEntity > &ent) |
| Removes a Property from the list. | |
| void | SetLineWeight (const double defw, const double maxw, const int gradw) |
| computes and sets "true" line weight according IGES rules from global data MaxLineWeight (maxv) and LineWeightGrad (gradw), or sets it to defw (Default) if LineWeightNumber is null | |
| 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. | |
| Protected Member Functions inherited from IGESData_IGESEntity | |
| IGESData_IGESEntity () | |
| prepares lists of optional data, set values to defaults | |
| void | InitTypeAndForm (const int typenum, const int formnum) |
| Initializes Type and Form Numbers to new values. Reserved for special uses. | |
| void | LoadAssociativities (const Interface_EntityList &list) |
| Loads a complete, already loaded, List of Asociativities (used during Read or Copy Operations) | |
| void | LoadProperties (const Interface_EntityList &list) |
| Loads a complete, already loaded, List of Properties (used during Read or Copy Operations) | |
| void | ClearProperties () |
| Removes all properties in once. | |
defines IGESBSplineSurface, Type <128> Form <0-9> in package IGESGeom A parametric equation obtained by dividing two summations involving weights (which are real numbers), the control points, and B-Spline basis functions
| IGESGeom_BSplineSurface::IGESGeom_BSplineSurface | ( | ) |
| int IGESGeom_BSplineSurface::DegreeU | ( | ) | const |
returns degree of first set of basis functions
| int IGESGeom_BSplineSurface::DegreeV | ( | ) | const |
returns degree of second set of basis functions
| void IGESGeom_BSplineSurface::Init | ( | const int | anIndexU, |
| const int | anIndexV, | ||
| const int | aDegU, | ||
| const int | aDegV, | ||
| const bool | aCloseU, | ||
| const bool | aCloseV, | ||
| const bool | aPolynom, | ||
| const bool | aPeriodU, | ||
| const bool | aPeriodV, | ||
| const occ::handle< NCollection_HArray1< double > > & | allKnotsU, | ||
| const occ::handle< NCollection_HArray1< double > > & | allKnotsV, | ||
| const occ::handle< NCollection_HArray2< double > > & | allWeights, | ||
| const occ::handle< NCollection_HArray2< gp_XYZ > > & | allPoles, | ||
| const double | aUmin, | ||
| const double | aUmax, | ||
| const double | aVmin, | ||
| const double | aVmax ) |
This method is used to set the fields of the class BSplineSurface.
| bool IGESGeom_BSplineSurface::IsClosedU | ( | ) | const |
True if closed in U direction else False.
| bool IGESGeom_BSplineSurface::IsClosedV | ( | ) | const |
True if closed in V direction else False.
| bool IGESGeom_BSplineSurface::IsPeriodicU | ( | ) | const |
True if periodic in U direction else False.
| bool IGESGeom_BSplineSurface::IsPeriodicV | ( | ) | const |
True if periodic in V direction else False.
True if polynomial, False if rational <flag> False (D) : computed from Weights <flag> True : recorded.
returns the value of knot referred to by anIndex in U direction raises exception if anIndex < -DegreeU() or anIndex > (NbKnotsU() - DegreeU())
returns the value of knot referred to by anIndex in V direction raises exception if anIndex < -DegreeV() or anIndex > (NbKnotsV() - DegreeV())
| int IGESGeom_BSplineSurface::NbKnotsU | ( | ) | const |
returns number of knots in U direction KnotsU are numbered from -DegreeU
| int IGESGeom_BSplineSurface::NbKnotsV | ( | ) | const |
returns number of knots in V direction KnotsV are numbered from -DegreeV
| int IGESGeom_BSplineSurface::NbPolesU | ( | ) | const |
returns number of poles in U direction
| int IGESGeom_BSplineSurface::NbPolesV | ( | ) | const |
returns number of poles in V direction
returns the control point referenced by anIndex1, anIndex2 raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV()
Changes FormNumber (indicates the Shape of the Surface) Error if not in range [0-9].
returns the control point referenced by anIndex1, anIndex2 after applying the Transf.Matrix raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV()
| double IGESGeom_BSplineSurface::UMax | ( | ) | const |
returns ending value in the U direction
| double IGESGeom_BSplineSurface::UMin | ( | ) | const |
returns starting value in the U direction
| int IGESGeom_BSplineSurface::UpperIndexU | ( | ) | const |
returns the upper index of the first sum (U)
| int IGESGeom_BSplineSurface::UpperIndexV | ( | ) | const |
returns the upper index of the second sum (V)
| double IGESGeom_BSplineSurface::VMax | ( | ) | const |
returns ending value in the V direction
| double IGESGeom_BSplineSurface::VMin | ( | ) | const |
returns starting value in the V direction
returns the weight referred to by anIndex1, anIndex2 raises exception if anIndex1 <= 0 or anIndex1 > NbPolesU() or if anIndex2 <= 0 or anIndex2 > NbPolesV()
1.10.0