Open CASCADE Technology
7.7.0.dev

This class contains representation of triangular selecting frustum, created in case of polyline selection, and algorithms for overlap detection between selecting frustum and sensitive entities. Overlap detection tests are implemented according to the terms of separating axis theorem (SAT). NOTE: the object of this class can be created only as part of SelectMgr_TriangularFrustumSet. More...
#include <SelectMgr_TriangularFrustum.hxx>
Data Structures  
struct  SelectionTriangle 
Auxiliary structure to define selection triangle. More...  
Public Member Functions  
virtual  ~SelectMgr_TriangularFrustum () 
Destructor. More...  
void  Init (const gp_Pnt2d &theP1, const gp_Pnt2d &theP2, const gp_Pnt2d &theP3) 
Initializes selection triangle by input points. More...  
virtual void  Build () override 
Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3 projections onto near and far view frustum planes (only for triangular frustums) 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 transformed according to the matrix given. More...  
Public Member Functions inherited from SelectMgr_Frustum< 3 >  
SelectMgr_Frustum ()  
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 userpicked 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 gp_Pnt  DetectedPoint (const Standard_Real theDepth) const 
Calculates the point on a view ray that was detected during the run of selection algo by given depth. It makes sense only for intersectors built on a single point. This method returns infinite point 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 nonconst 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...  
SAT Tests for different objects  
SelectionTriangle  mySelTriangle 
parameters of selection triangle (it is used to build triangle frustum) 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 axisaligned box. More...  
virtual Standard_Boolean  OverlapsBox (const SelectMgr_Vec3 &theMinPt, const SelectMgr_Vec3 &theMaxPt, Standard_Boolean *theInside) const override 
Returns true if selecting volume is overlapped by axisaligned 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 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...  
void  Clear () 
Nullifies the handle to corresponding builder instance to prevent memory leaks. 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  DumpJson (Standard_OStream &theOStream, Standard_Integer theDepth=1) const override 
Dumps the content of me into the stream. More...  
SelectMgr_TriangularFrustum ()  
Creates an empty triangular frustum. 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 Member Functions inherited from SelectMgr_Frustum< 3 >  
Standard_Boolean  hasBoxOverlap (const SelectMgr_Vec3 &theBoxMin, const SelectMgr_Vec3 &theBoxMax, Standard_Boolean *theInside=NULL) const 
Returns true if selecting volume is overlapped by axisaligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt. More...  
Standard_Boolean  hasPointOverlap (const gp_Pnt &thePnt) const 
SAT intersection test between defined volume and given point. More...  
Standard_Boolean  hasSegmentOverlap (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2) const 
SAT intersection test between defined volume and given segment. More...  
Standard_Boolean  hasPolygonOverlap (const TColgp_Array1OfPnt &theArrayOfPnts, gp_Vec &theNormal) const 
SAT intersection test between frustum given and planar convex polygon represented as ordered point set. More...  
Standard_Boolean  hasTriangleOverlap (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, const gp_Pnt &thePnt3, gp_Vec &theNormal) const 
SAT intersection test between defined volume and given triangle. More...  
Standard_Boolean  hasSphereOverlap (const gp_Pnt &thePnt1, const Standard_Real theRadius, Standard_Boolean *theInside=NULL) const 
Intersection test between defined volume and given sphere. More...  
Standard_Boolean  hasCylinderOverlap (const Standard_Real theBottomRad, const Standard_Real theTopRad, const Standard_Real theHeight, const gp_Trsf &theTrsf, Standard_Boolean *theInside=NULL) const 
Intersection test between defined volume and given cylinder (or cone). More...  
Standard_Boolean  IsDotInside (const gp_Pnt &thePnt, const TColgp_Array1OfPnt &theVertices) const 
Checking whether the point thePnt is inside the shape with borders theVertices. thePnt and theVertices lie in the same plane. More...  
Protected Attributes inherited from SelectMgr_Frustum< 3 >  
gp_Vec  myPlanes [N+2] 
Plane equations. More...  
gp_Pnt  myVertices [N *2] 
Vertices coordinates. More...  
Standard_Real  myMaxVertsProjections [N+2] 
Cached projections of vertices onto frustum plane directions. More...  
Standard_Real  myMinVertsProjections [N+2] 
Cached projections of vertices onto frustum plane directions. More...  
Standard_Real  myMaxOrthoVertsProjections [3] 
Cached projections of vertices onto directions of ortho unit vectors. More...  
Standard_Real  myMinOrthoVertsProjections [3] 
Cached projections of vertices onto directions of ortho unit vectors. More...  
gp_Vec  myEdgeDirs [6] 
Cached edge directions. 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...  
This class contains representation of triangular selecting frustum, created in case of polyline selection, and algorithms for overlap detection between selecting frustum and sensitive entities. Overlap detection tests are implemented according to the terms of separating axis theorem (SAT). NOTE: the object of this class can be created only as part of SelectMgr_TriangularFrustumSet.

virtual 
Destructor.

protected 
Creates an empty triangular frustum.

overridevirtual 
Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3 projections onto near and far view frustum planes (only for triangular frustums) NOTE: it should be called after Init() method.
Implements SelectMgr_BaseIntersector.
void SelectMgr_TriangularFrustum::Clear  (  ) 
Nullifies the handle to corresponding builder instance to prevent memory leaks.

overridevirtual 
Dumps the content of me into the stream.
Reimplemented from SelectMgr_Frustum< 3 >.

overridevirtual 
Stores plane equation coefficients (in the following form: Ax + By + Cz + D = 0) to the given vector.
Reimplemented from SelectMgr_BaseIntersector.
void SelectMgr_TriangularFrustum::Init  (  const gp_Pnt2d &  theP1, 
const gp_Pnt2d &  theP2,  
const gp_Pnt2d &  theP3  
) 
Initializes selection triangle by input points.

inlineoverridevirtual 
Returns FALSE (not applicable to this volume).
Implements SelectMgr_BaseIntersector.

overridevirtual 
SAT intersection test between defined volume and given axisaligned box.
Implements SelectMgr_BaseIntersector.

overridevirtual 
Returns true if selecting volume is overlapped by axisaligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt.
Implements SelectMgr_BaseIntersector.

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.

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.

inlineoverridevirtual 
Always returns FALSE (not applicable to this selector).
Implements SelectMgr_BaseIntersector.

overridevirtual 
Intersection test between defined volume and given point.
Implements SelectMgr_BaseIntersector.

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.

overridevirtual 
Checks if line segment overlaps selecting frustum.
Implements SelectMgr_BaseIntersector.

overridevirtual 
Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius.
Implements SelectMgr_BaseIntersector.

overridevirtual 
Returns true if selecting volume is overlapped by sphere with center theCenter and radius theRadius.
Implements SelectMgr_BaseIntersector.

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.

overridevirtual 
Returns a copy of the frustum transformed according to the matrix given.
Implements SelectMgr_BaseIntersector.

protected 
parameters of selection triangle (it is used to build triangle frustum)