Open CASCADE Technology
7.1.0.beta
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This class is base class for handling overlap detection of complex sensitive entities. It provides an interface for building BVH tree for some set of entities. Thereby, each iteration of overlap detection is a traverse of BVH tree in fact. To use speed-up hierarchical structure in a custom complex sensitive entity, it is necessary to make that custom entity a descendant of this class and organize sub-entities in some container which allows referencing to elements by index. Note that methods taking index as a parameter are used for BVH build and the range of given index is [0; Size() - 1]. For example of usage see Select3D_SensitiveTriangulation. More...
#include <Select3D_SensitiveSet.hxx>
Data Structures | |
class | BvhPrimitiveSet |
The purpose of this class is to provide a link between BVH_PrimitiveSet and Select3D_SensitiveSet instance to build BVH tree for set of sensitives. More... | |
Public Member Functions | |
Select3D_SensitiveSet (const Handle< SelectBasics_EntityOwner > &theOwnerId) | |
Creates new empty sensitive set and its content. More... | |
~Select3D_SensitiveSet () | |
virtual Standard_Integer | Size () const =0 |
Returns the amount of sub-entities of the complex entity. More... | |
virtual Select3D_BndBox3d | Box (const Standard_Integer theIdx) const =0 |
Returns bounding box of sub-entity with index theIdx in sub-entity list. More... | |
virtual Standard_Real | Center (const Standard_Integer theIdx, const Standard_Integer theAxis) const =0 |
Returns geometry center of sensitive entity index theIdx along the given axis theAxis. More... | |
virtual void | Swap (const Standard_Integer theIdx1, const Standard_Integer theIdx2)=0 |
Swaps items with indexes theIdx1 and theIdx2. More... | |
virtual Standard_Boolean | Matches (SelectBasics_SelectingVolumeManager &theMgr, SelectBasics_PickResult &thePickResult) override |
Checks whether one or more entities of the set overlap current selecting volume. Implements the traverse of BVH tree built for the set. More... | |
virtual void | BVH () override |
Builds BVH tree for sensitive set. Must be called manually to build BVH tree for any sensitive set in case if its content was initialized not in a constructor, but element by element. More... | |
void | MarkDirty () |
Marks BVH tree of the set as outdated. It will be rebuild at the next call of BVH() More... | |
virtual Select3D_BndBox3d | BoundingBox () override |
Returns bounding box of the whole set. This method should be redefined in Select3D_SensitiveSet descendants. More... | |
virtual gp_Pnt | CenterOfGeometry () const override |
Returns center of the whole set. This method should be redefined in Select3D_SensitiveSet descendants. More... | |
virtual void | Clear () override |
Destroys cross-reference to avoid memory leak. More... | |
Standard_Integer | GetLeafNodeSize () const |
Returns a number of nodes in 1 BVH leaf. More... | |
Public Member Functions inherited from Select3D_SensitiveEntity | |
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_Integer | NbSubElements () override=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 Standard_Boolean | HasInitLocation () const override |
Returns true if the shape corresponding to the entity has init location. More... | |
virtual gp_GTrsf | InvInitLocation () const override |
Returns inversed location transformation matrix if the shape corresponding to this entity has init location set. Otherwise, returns identity matrix. 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_Integer | SensitivityFactor () const |
allows a better sensitivity for a specific entity in selection algorithms useful for small sized entities. More... | |
void | SetSensitivityFactor (const Standard_Integer theNewSens) |
Allows to manage sensitivity of a particular sensitive entity. More... | |
Public Member Functions inherited from MMgt_TShared | |
virtual void | Delete () const override |
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_Transient & | operator= (const Standard_Transient &) |
Assignment operator, needed to avoid copying reference counter. More... | |
virtual | ~Standard_Transient () |
Destructor must be virtual. 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_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. 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... | |
Protected Member Functions | |
virtual Standard_Boolean | overlapsElement (SelectBasics_SelectingVolumeManager &theMgr, Standard_Integer theElemIdx, Standard_Real &theMatchDepth)=0 |
Checks whether the entity with index theIdx overlaps the current selecting volume. More... | |
virtual Standard_Boolean | elementIsInside (SelectBasics_SelectingVolumeManager &theMgr, const Standard_Integer theElemIdx)=0 |
Checks whether the entity with index theIdx is inside the current selecting volume. More... | |
virtual Standard_Real | distanceToCOG (SelectBasics_SelectingVolumeManager &theMgr)=0 |
Calculates distance from the 3d projection of used-picked screen point to center of the geometry. More... | |
Protected Member Functions inherited from Select3D_SensitiveEntity | |
Select3D_SensitiveEntity (const Handle< SelectBasics_EntityOwner > &theOwnerId) | |
Protected Member Functions inherited from SelectBasics_SensitiveEntity | |
SelectBasics_SensitiveEntity (const Handle< SelectBasics_EntityOwner > &theOwnerId) | |
Protected Attributes | |
BvhPrimitiveSet | myContent |
A link between sensitive entity and BVH_PrimitiveSet. More... | |
Standard_Integer | myDetectedIdx |
Index of detected primitive in BVH sorted primitive array. More... | |
Protected Attributes inherited from SelectBasics_SensitiveEntity | |
Handle< SelectBasics_EntityOwner > | myOwnerId |
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... | |
This class is base class for handling overlap detection of complex sensitive entities. It provides an interface for building BVH tree for some set of entities. Thereby, each iteration of overlap detection is a traverse of BVH tree in fact. To use speed-up hierarchical structure in a custom complex sensitive entity, it is necessary to make that custom entity a descendant of this class and organize sub-entities in some container which allows referencing to elements by index. Note that methods taking index as a parameter are used for BVH build and the range of given index is [0; Size() - 1]. For example of usage see Select3D_SensitiveTriangulation.
Select3D_SensitiveSet::Select3D_SensitiveSet | ( | const Handle< SelectBasics_EntityOwner > & | theOwnerId | ) |
Creates new empty sensitive set and its content.
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inline |
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overridevirtual |
Returns bounding box of the whole set. This method should be redefined in Select3D_SensitiveSet descendants.
Implements Select3D_SensitiveEntity.
Reimplemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitiveTriangulation, Select3D_SensitivePoly, Select3D_InteriorSensitivePointSet, Select3D_SensitiveWire, and MeshVS_CommonSensitiveEntity.
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pure virtual |
Returns bounding box of sub-entity with index theIdx in sub-entity list.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitivePoly, Select3D_SensitiveTriangulation, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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overridevirtual |
Builds BVH tree for sensitive set. Must be called manually to build BVH tree for any sensitive set in case if its content was initialized not in a constructor, but element by element.
Reimplemented from Select3D_SensitiveEntity.
Reimplemented in Select3D_SensitiveCircle.
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pure virtual |
Returns geometry center of sensitive entity index theIdx along the given axis theAxis.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitivePoly, Select3D_SensitiveTriangulation, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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overridevirtual |
Returns center of the whole set. This method should be redefined in Select3D_SensitiveSet descendants.
Implements Select3D_SensitiveEntity.
Reimplemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitiveTriangulation, Select3D_SensitiveCircle, Select3D_SensitivePoly, Select3D_InteriorSensitivePointSet, Select3D_SensitiveWire, and MeshVS_CommonSensitiveEntity.
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overridevirtual |
Destroys cross-reference to avoid memory leak.
Reimplemented from Select3D_SensitiveEntity.
Reimplemented in Select3D_SensitiveGroup.
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protectedpure virtual |
Calculates distance from the 3d projection of used-picked screen point to center of the geometry.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveCircle, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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protectedpure virtual |
Checks whether the entity with index theIdx is inside the current selecting volume.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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inline |
Returns a number of nodes in 1 BVH leaf.
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inline |
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overridevirtual |
Checks whether one or more entities of the set overlap current selecting volume. Implements the traverse of BVH tree built for the set.
Reimplemented from Select3D_SensitiveEntity.
Reimplemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, and Select3D_SensitiveCircle.
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protectedpure virtual |
Checks whether the entity with index theIdx overlaps the current selecting volume.
theMatchDepth | set to the current minimum depth by Select3D_SensitiveSet; should be set to the new depth when overlapping is detected |
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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pure virtual |
Returns the amount of sub-entities of the complex entity.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitivePoly, Select3D_SensitiveTriangulation, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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pure virtual |
Swaps items with indexes theIdx1 and theIdx2.
Implemented in Select3D_SensitivePrimitiveArray, Select3D_SensitiveGroup, Select3D_SensitivePoly, Select3D_SensitiveTriangulation, Select3D_SensitiveWire, Select3D_InteriorSensitivePointSet, and MeshVS_CommonSensitiveEntity.
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protected |
A link between sensitive entity and BVH_PrimitiveSet.
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protected |
Index of detected primitive in BVH sorted primitive array.