Open CASCADE Technology  6.9.0
Public Member Functions | Protected Member Functions

Select3D_SensitiveEntity Class Referenceabstract

Abstract framework to define 3D sensitive entities.

As the selection process uses the principle of a projection of 3D shapes onto a 2D view where nearness to a rectangle determines whether a shape is picked or not, all 3D shapes need to be converted into 2D ones in order to be selected. More...

#include <Select3D_SensitiveEntity.hxx>

Inheritance diagram for Select3D_SensitiveEntity:
Inheritance graph
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Public Member Functions

virtual Handle
< Select3D_SensitiveEntity
GetConnected ()
 Originally this method intended to return sensitive entity with new location aLocation, but currently sensitive entities do not hold a location, instead HasLocation() and Location() methods call corresponding entity owner's methods. Thus all entities returned by GetConnected() share the same location propagated from corresponding selectable object. You must redefine this function for any type of sensitive entity which can accept another connected sensitive entity.//can be connected to another sensitive entity. More...
 
virtual Standard_Boolean Matches (SelectBasics_SelectingVolumeManager &theMgr, SelectBasics_PickResult &thePickResult) Standard_OVERRIDE
 Checks whether sensitive overlaps current selecting volume. Stores minimum depth, distance to center of geometry and closest point detected into thePickResult. More...
 
virtual Standard_Integer NbSubElements ()=0
 Returns the number of sub-entities or elements in sensitive entity. Is used to determine if entity is complex and needs to pre-build BVH at the creation of sensitive entity step or is light-weighted so the tree can be build on demand with unnoticeable delay. More...
 
virtual Select3D_BndBox3d BoundingBox ()=0
 Returns bounding box of a sensitive with transformation applied. More...
 
virtual gp_Pnt CenterOfGeometry () const =0
 Returns center of a sensitive with transformation applied. More...
 
virtual void BVH () Standard_OVERRIDE
 Builds BVH tree for a sensitive if needed. More...
 
virtual void Clear () Standard_OVERRIDE
 Clears up all resources and memory. More...
 
- Public Member Functions inherited from SelectBasics_SensitiveEntity
virtual void Set (const Handle< SelectBasics_EntityOwner > &theOwnerId)
 Sets owner of the entity. More...
 
const Handle
< SelectBasics_EntityOwner > & 
OwnerId () const
 Returns pointer to owner of the entity. More...
 
Standard_Real SensitivityFactor () const
 allows a better sensitivity for a specific entity in selection algorithms useful for small sized entities. More...
 
- Public Member Functions inherited from MMgt_TShared
virtual void Delete () const
 Memory deallocator for transient classes. 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 const
Handle_Standard_Type & 
DynamicType () const
 Returns a type information object about this object. More...
 
Standard_Boolean IsInstance (const 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 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...
 
virtual Handle_Standard_Transient This () const
 Returns a Handle which references this object. Must never be called to objects created in stack. More...
 
Standard_Integer GetRefCount () const
 Get the reference counter of this object. More...
 

Protected Member Functions

 Select3D_SensitiveEntity (const Handle< SelectBasics_EntityOwner > &theOwnerId)
 
- Protected Member Functions inherited from SelectBasics_SensitiveEntity
 SelectBasics_SensitiveEntity (const Handle< SelectBasics_EntityOwner > &theOwnerId, const Standard_Real theSensFactor=2.0)
 
void SetSensitivityFactor (const Standard_Real theSensFactor)
 Allows to manage the sensitivity of the entity. More...
 

Additional Inherited Members

- Protected Attributes inherited from SelectBasics_SensitiveEntity
Handle< SelectBasics_EntityOwnermyOwnerId
 

Detailed Description

Abstract framework to define 3D sensitive entities.

As the selection process uses the principle of a projection of 3D shapes onto a 2D view where nearness to a rectangle determines whether a shape is picked or not, all 3D shapes need to be converted into 2D ones in order to be selected.

Constructor & Destructor Documentation

Select3D_SensitiveEntity::Select3D_SensitiveEntity ( const Handle< SelectBasics_EntityOwner > &  theOwnerId)
protected

Member Function Documentation

virtual Select3D_BndBox3d Select3D_SensitiveEntity::BoundingBox ( )
pure virtual
virtual void Select3D_SensitiveEntity::BVH ( )
virtual

Builds BVH tree for a sensitive if needed.

Implements SelectBasics_SensitiveEntity.

Reimplemented in Select3D_SensitiveCircle, Select3D_SensitiveFace, and Select3D_SensitiveSet.

virtual gp_Pnt Select3D_SensitiveEntity::CenterOfGeometry ( ) const
pure virtual
virtual void Select3D_SensitiveEntity::Clear ( )
virtual

Clears up all resources and memory.

Implements SelectBasics_SensitiveEntity.

Reimplemented in Select3D_SensitiveSet, and Select3D_SensitiveGroup.

virtual Handle< Select3D_SensitiveEntity > Select3D_SensitiveEntity::GetConnected ( )
virtual

Originally this method intended to return sensitive entity with new location aLocation, but currently sensitive entities do not hold a location, instead HasLocation() and Location() methods call corresponding entity owner's methods. Thus all entities returned by GetConnected() share the same location propagated from corresponding selectable object. You must redefine this function for any type of sensitive entity which can accept another connected sensitive entity.//can be connected to another sensitive entity.

Reimplemented in Select3D_SensitiveCircle, Select3D_SensitiveGroup, Select3D_SensitiveTriangulation, Select3D_SensitiveFace, Select3D_SensitiveCurve, Select3D_SensitiveTriangle, Select3D_SensitiveSegment, Select3D_SensitiveBox, MeshVS_SensitivePolyhedron, Select3D_SensitiveWire, Select3D_SensitivePoint, and MeshVS_SensitiveMesh.

virtual Standard_Boolean Select3D_SensitiveEntity::Matches ( SelectBasics_SelectingVolumeManager theMgr,
SelectBasics_PickResult thePickResult 
)
virtual

Checks whether sensitive overlaps current selecting volume. Stores minimum depth, distance to center of geometry and closest point detected into thePickResult.

Implements SelectBasics_SensitiveEntity.

Reimplemented in Select3D_SensitiveCircle, Select3D_SensitiveGroup, Select3D_SensitiveFace, Select3D_SensitiveSegment, Select3D_SensitiveSet, Select3D_SensitiveBox, MeshVS_SensitivePolyhedron, Select3D_SensitiveTriangle, and Select3D_SensitivePoint.

virtual Standard_Integer Select3D_SensitiveEntity::NbSubElements ( )
pure virtual

Returns the number of sub-entities or elements in sensitive entity. Is used to determine if entity is complex and needs to pre-build BVH at the creation of sensitive entity step or is light-weighted so the tree can be build on demand with unnoticeable delay.

Implements SelectBasics_SensitiveEntity.

Implemented in Select3D_SensitiveGroup, Select3D_SensitiveFace, Select3D_SensitiveTriangulation, Select3D_InteriorSensitivePointSet, Select3D_SensitiveTriangle, Select3D_SensitivePoly, MeshVS_SensitivePolyhedron, Select3D_SensitiveSegment, Select3D_SensitiveBox, Select3D_SensitiveWire, Select3D_SensitivePoint, and MeshVS_SensitiveMesh.


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