This class is used to handle polyline selection. The main principle of polyline selection algorithm is to split the polygon defined by polyline onto triangles. Than each of them is considered as a base for triangular frustum building. In other words, each triangle vertex will be projected from 2d screen space to 3d world space onto near and far view frustum planes. Thus, the projected triangles make up the bases of selecting frustum. When the set of such frustums is created, the function determining selection iterates through triangular frustum set and searches for overlap with any frustum. More...
#include <SelectMgr_TriangularFrustumSet.hxx>
Inheritance diagram for SelectMgr_TriangularFrustumSet:
Data Structures | |
| struct | SelectionPolyline |
| Auxiliary structure to define selection polyline. More... | |
Public Member Functions | |
| SelectMgr_TriangularFrustumSet () | |
| Constructor. More... | |
| virtual | ~SelectMgr_TriangularFrustumSet () |
| Destructor. More... | |
| void | Init (const TColgp_Array1OfPnt2d &thePoints) |
| Initializes set of triangular frustums by polyline. More... | |
| virtual void | Build () override |
| Meshes polygon bounded by polyline. Than organizes a set of triangular frustums, where each triangle's projection onto near and far view frustum planes is considered as a frustum base NOTE: it should be called after Init() method. More... | |
| virtual Standard_Boolean | IsScalable () const override |
| Returns FALSE (not applicable to this volume). More... | |
| virtual Handle< SelectMgr_BaseIntersector > | ScaleAndTransform (const Standard_Integer theScale, const gp_GTrsf &theTrsf, const Handle< SelectMgr_FrustumBuilder > &theBuilder) const override |
| Returns a copy of the frustum with all sub-volumes transformed according to the matrix given. More... | |
| virtual Standard_Boolean | OverlapsBox (const SelectMgr_Vec3 &theMinPnt, const SelectMgr_Vec3 &theMaxPnt, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| SAT intersection test between defined volume and given axis-aligned box. More... | |
| virtual Standard_Boolean | OverlapsBox (const SelectMgr_Vec3 &theMinPnt, const SelectMgr_Vec3 &theMaxPnt, Standard_Boolean *theInside) const override |
| Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt. More... | |
| virtual Standard_Boolean | OverlapsPoint (const gp_Pnt &thePnt, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| Intersection test between defined volume and given point. More... | |
| virtual Standard_Boolean | OverlapsPoint (const gp_Pnt &) const override |
| Always returns FALSE (not applicable to this selector). More... | |
| virtual Standard_Boolean | OverlapsPolygon (const TColgp_Array1OfPnt &theArrayOfPnts, Select3D_TypeOfSensitivity theSensType, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| SAT intersection test between defined volume and given ordered set of points, representing line segments. The test may be considered of interior part or boundary line defined by segments depending on given sensitivity type. More... | |
| virtual Standard_Boolean | OverlapsSegment (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| Checks if line segment overlaps selecting frustum. More... | |
| virtual Standard_Boolean | OverlapsTriangle (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, const gp_Pnt &thePnt3, Select3D_TypeOfSensitivity theSensType, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| SAT intersection test between defined volume and given triangle. The test may be considered of interior part or boundary line defined by triangle vertices depending on given sensitivity type. More... | |
| virtual gp_Pnt | DetectedPoint (const Standard_Real theDepth) const override |
| Calculates the point on a view ray that was detected during the run of selection algo by given depth. More... | |
| virtual Standard_Boolean | OverlapsSphere (const gp_Pnt &theCenter, const Standard_Real theRadius, Standard_Boolean *theInside=NULL) const override |
| Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius. More... | |
| virtual Standard_Boolean | OverlapsSphere (const gp_Pnt &theCenter, const Standard_Real theRadius, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius. More... | |
| virtual Standard_Boolean | OverlapsCylinder (const Standard_Real theBottomRad, const Standard_Real theTopRad, const Standard_Real theHeight, const gp_Trsf &theTrsf, const SelectMgr_ViewClipRange &theClipRange, SelectBasics_PickResult &thePickResult) const override |
| Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf. More... | |
| virtual Standard_Boolean | OverlapsCylinder (const Standard_Real theBottomRad, const Standard_Real theTopRad, const Standard_Real theHeight, const gp_Trsf &theTrsf, Standard_Boolean *theInside=NULL) const override |
| Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf. More... | |
| virtual void | GetPlanes (NCollection_Vector< SelectMgr_Vec4 > &thePlaneEquations) const override |
| Stores plane equation coefficients (in the following form: Ax + By + Cz + D = 0) to the given vector. More... | |
| virtual void | SetAllowOverlapDetection (const Standard_Boolean theIsToAllow) |
| If theIsToAllow is false, only fully included sensitives will be detected, otherwise the algorithm will mark both included and overlapped entities as matched. More... | |
| virtual void | DumpJson (Standard_OStream &theOStream, Standard_Integer theDepth=-1) const override |
| Dumps the content of me into the stream. More... | |
 Public Member Functions inherited from SelectMgr_BaseFrustum | |
| SelectMgr_BaseFrustum () | |
| Creates new selecting volume with pixel tolerance set to 2, orthographic camera and empty frustum builder. More... | |
| virtual | ~SelectMgr_BaseFrustum () |
| Destructor. More... | |
| void | SetBuilder (const Handle< SelectMgr_FrustumBuilder > &theBuilder) |
| Nullifies the builder created in the constructor and copies the pointer given. More... | |
| virtual void | SetCamera (const Handle< Graphic3d_Camera > &theCamera) override |
| Saves camera definition and passes it to builder. More... | |
| virtual void | SetPixelTolerance (const Standard_Integer theTol) override |
| Sets pixel tolerance. It makes sense only for scalable intersectors (built on a single point). This method does nothing for the base class. More... | |
| virtual void | SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight) override |
| Sets current window size. This method does nothing for the base class. More... | |
| virtual void | WindowSize (Standard_Integer &theWidth, Standard_Integer &theHeight) const override |
| Returns current window size. This method doesn't set any output values for the base class. More... | |
| virtual void | SetViewport (const Standard_Real theX, const Standard_Real theY, const Standard_Real theWidth, const Standard_Real theHeight) override |
| Passes viewport parameters to builder. More... | |
| Standard_Boolean | IsBoundaryIntersectSphere (const gp_Pnt &theCenter, const Standard_Real theRadius, const gp_Dir &thePlaneNormal, const TColgp_Array1OfPnt &theBoundaries, Standard_Boolean &theBoundaryInside) const |
| Checks whether the boundary of the current volume selection intersects with a sphere or are there it's boundaries lying inside the sphere. More... | |
| Public Member Functions inherited from SelectMgr_BaseIntersector | |
| SelectMgr_BaseIntersector () | |
| Creates new empty selecting volume. More... | |
| virtual | ~SelectMgr_BaseIntersector () |
| Destructor. More... | |
| SelectMgr_SelectionType | GetSelectionType () const |
| Returns selection type of this intersector. More... | |
| const Handle< Graphic3d_Camera > & | Camera () const |
| Return camera definition. More... | |
| virtual const gp_Pnt & | GetNearPnt () const |
| Returns near point of intersector. This method returns zero point for the base class. More... | |
| virtual const gp_Pnt & | GetFarPnt () const |
| Returns far point of intersector. This method returns zero point for the base class. More... | |
| virtual const gp_Dir & | GetViewRayDirection () const |
| Returns direction ray of intersector. This method returns zero direction for the base class. More... | |
| virtual const gp_Pnt2d & | GetMousePosition () const |
| Returns current mouse coordinates. This method returns infinite point for the base class. More... | |
| virtual Standard_Real | DistToGeometryCenter (const gp_Pnt &theCOG) const |
| Measures distance between 3d projection of user-picked screen point and given point theCOG. It makes sense only for intersectors built on a single point. This method returns infinite value for the base class. More... | |
| virtual Standard_Boolean | RaySphereIntersection (const gp_Pnt &theCenter, const Standard_Real theRadius, const gp_Pnt &theLoc, const gp_Dir &theRayDir, Standard_Real &theTimeEnter, Standard_Real &theTimeLeave) const |
| Checks whether the ray that starts at the point theLoc and directs with the direction theRayDir intersects with the sphere with center at theCenter and radius TheRadius. More... | |
| virtual Standard_Boolean | RayCylinderIntersection (const Standard_Real theBottomRadius, const Standard_Real theTopRadius, const Standard_Real theHeight, const gp_Pnt &theLoc, const gp_Dir &theRayDir, Standard_Real &theTimeEnter, Standard_Real &theTimeLeave) const |
| Checks whether the ray that starts at the point theLoc and directs with the direction theRayDir intersects with the cylinder (or cone) with radiuses theBottomRad and theTopRad and height theHeights. 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 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_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... | |
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... | |
| Protected Attributes inherited from SelectMgr_BaseFrustum | |
| Standard_Integer | myPixelTolerance |
| Pixel tolerance. More... | |
| Handle< SelectMgr_FrustumBuilder > | myBuilder |
| A tool implementing methods for volume build. More... | |
| Protected Attributes inherited from SelectMgr_BaseIntersector | |
| Handle< Graphic3d_Camera > | myCamera |
| camera definition (if builder isn't NULL it is the same as its camera) More... | |
| SelectMgr_SelectionType | mySelectionType |
| type of selection More... | |
Detailed Description
This class is used to handle polyline selection. The main principle of polyline selection algorithm is to split the polygon defined by polyline onto triangles. Than each of them is considered as a base for triangular frustum building. In other words, each triangle vertex will be projected from 2d screen space to 3d world space onto near and far view frustum planes. Thus, the projected triangles make up the bases of selecting frustum. When the set of such frustums is created, the function determining selection iterates through triangular frustum set and searches for overlap with any frustum.
Constructor & Destructor Documentation
◆ SelectMgr_TriangularFrustumSet()
| SelectMgr_TriangularFrustumSet::SelectMgr_TriangularFrustumSet | ( | ) |
Constructor.
◆ ~SelectMgr_TriangularFrustumSet()
|
virtual |
Destructor.
Member Function Documentation
◆ Build()
|
overridevirtual |
Meshes polygon bounded by polyline. Than organizes a set of triangular frustums, where each triangle's projection onto near and far view frustum planes is considered as a frustum base NOTE: it should be called after Init() method.
Implements SelectMgr_BaseIntersector.
◆ DetectedPoint()
|
overridevirtual |
Calculates the point on a view ray that was detected during the run of selection algo by given depth.
Reimplemented from SelectMgr_BaseIntersector.
◆ DumpJson()
|
overridevirtual |
Dumps the content of me into the stream.
Reimplemented from SelectMgr_BaseFrustum.
◆ GetPlanes()
|
overridevirtual |
Stores plane equation coefficients (in the following form: Ax + By + Cz + D = 0) to the given vector.
Reimplemented from SelectMgr_BaseIntersector.
◆ Init()
| void SelectMgr_TriangularFrustumSet::Init | ( | const TColgp_Array1OfPnt2d & | thePoints | ) |
Initializes set of triangular frustums by polyline.
◆ IsScalable()
|
inlineoverridevirtual |
Returns FALSE (not applicable to this volume).
Implements SelectMgr_BaseIntersector.
◆ OverlapsBox() [1/2]
|
overridevirtual |
SAT intersection test between defined volume and given axis-aligned box.
Implements SelectMgr_BaseIntersector.
◆ OverlapsBox() [2/2]
|
overridevirtual |
Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt.
Implements SelectMgr_BaseIntersector.
◆ OverlapsCylinder() [1/2]
|
overridevirtual |
Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf.
Implements SelectMgr_BaseIntersector.
◆ OverlapsCylinder() [2/2]
|
overridevirtual |
Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad and theTopRad, height theHeight and transformation to apply theTrsf.
Implements SelectMgr_BaseIntersector.
◆ OverlapsPoint() [1/2]
|
inlineoverridevirtual |
Always returns FALSE (not applicable to this selector).
Implements SelectMgr_BaseIntersector.
◆ OverlapsPoint() [2/2]
|
overridevirtual |
Intersection test between defined volume and given point.
Implements SelectMgr_BaseIntersector.
◆ OverlapsPolygon()
|
overridevirtual |
SAT intersection test between defined volume and given ordered set of points, representing line segments. The test may be considered of interior part or boundary line defined by segments depending on given sensitivity type.
Implements SelectMgr_BaseIntersector.
◆ OverlapsSegment()
|
overridevirtual |
Checks if line segment overlaps selecting frustum.
Implements SelectMgr_BaseIntersector.
◆ OverlapsSphere() [1/2]
|
overridevirtual |
Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius.
Implements SelectMgr_BaseIntersector.
◆ OverlapsSphere() [2/2]
|
overridevirtual |
Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius.
Implements SelectMgr_BaseIntersector.
◆ OverlapsTriangle()
|
overridevirtual |
SAT intersection test between defined volume and given triangle. The test may be considered of interior part or boundary line defined by triangle vertices depending on given sensitivity type.
Implements SelectMgr_BaseIntersector.
◆ ScaleAndTransform()
|
overridevirtual |
Returns a copy of the frustum with all sub-volumes transformed according to the matrix given.
Implements SelectMgr_BaseIntersector.
◆ SetAllowOverlapDetection()
|
virtual |
If theIsToAllow is false, only fully included sensitives will be detected, otherwise the algorithm will mark both included and overlapped entities as matched.
The documentation for this class was generated from the following file:
