Open CASCADE Technology  7.3.1.dev
Public Member Functions
SelectMgr_Filter Class Referenceabstract

The root class to define filter objects for selection. Advance handling of objects requires the services of filters. These only allow dynamic detection and selection of objects which correspond to the criteria defined in each. Eight standard filters inheriting SelectMgr_Filter are defined in Open CASCADE. You can create your own filters by defining new filter classes inheriting this framework. You use these filters by loading them into an AIS interactive context. More...

#include <SelectMgr_Filter.hxx>

Inheritance diagram for SelectMgr_Filter:
Inheritance graph
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Public Member Functions

virtual Standard_Boolean IsOk (const Handle< SelectMgr_EntityOwner > &anObj) const =0
 Indicates that the selected Interactive Object passes the filter. The owner, anObj, can be either direct or user. A direct owner is the corresponding construction element, whereas a user is the compound shape of which the entity forms a part. When an object is detected by the mouse - in AIS, this is done through a context selector - its owner is passed to the filter as an argument. If the object returns Standard_True, it is kept; if not, it is rejected. If you are creating a filter class inheriting this framework, and the daughter class is to be used in an AIS local context, you will need to implement the virtual function ActsOn. More...
 
virtual Standard_Boolean ActsOn (const TopAbs_ShapeEnum aStandardMode) const
 Returns true in an AIS local context, if this filter operates on a type of subshape defined in a filter class inheriting this framework. This function completes IsOk in an AIS local context. 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
 Returns a type descriptor about this object. More...
 
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...
 

Additional Inherited Members

- Public Types inherited from Standard_Transient
typedef void base_type
 Returns a type descriptor about this object. More...
 
- Static Public Member Functions inherited from Standard_Transient
static const char * get_type_name ()
 Returns a type descriptor about this object. More...
 
static const opencascade::handle< Standard_Type > & get_type_descriptor ()
 Returns type descriptor of Standard_Transient class. More...
 

Detailed Description

The root class to define filter objects for selection. Advance handling of objects requires the services of filters. These only allow dynamic detection and selection of objects which correspond to the criteria defined in each. Eight standard filters inheriting SelectMgr_Filter are defined in Open CASCADE. You can create your own filters by defining new filter classes inheriting this framework. You use these filters by loading them into an AIS interactive context.

Member Function Documentation

◆ ActsOn()

virtual Standard_Boolean SelectMgr_Filter::ActsOn ( const TopAbs_ShapeEnum  aStandardMode) const
virtual

Returns true in an AIS local context, if this filter operates on a type of subshape defined in a filter class inheriting this framework. This function completes IsOk in an AIS local context.

Reimplemented in SelectMgr_CompositionFilter, StdSelect_FaceFilter, StdSelect_ShapeTypeFilter, StdSelect_EdgeFilter, AIS_BadEdgeFilter, and AIS_C0RegularityFilter.

◆ IsOk()

virtual Standard_Boolean SelectMgr_Filter::IsOk ( const Handle< SelectMgr_EntityOwner > &  anObj) const
pure virtual

Indicates that the selected Interactive Object passes the filter. The owner, anObj, can be either direct or user. A direct owner is the corresponding construction element, whereas a user is the compound shape of which the entity forms a part. When an object is detected by the mouse - in AIS, this is done through a context selector - its owner is passed to the filter as an argument. If the object returns Standard_True, it is kept; if not, it is rejected. If you are creating a filter class inheriting this framework, and the daughter class is to be used in an AIS local context, you will need to implement the virtual function ActsOn.

Implemented in AIS_AttributeFilter, AIS_SignatureFilter, AIS_ExclusionFilter, AIS_TypeFilter, StdSelect_FaceFilter, StdSelect_EdgeFilter, StdSelect_ShapeTypeFilter, AIS_BadEdgeFilter, AIS_C0RegularityFilter, SelectMgr_AndFilter, and SelectMgr_OrFilter.


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