Open CASCADE Technology
6.9.1

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). More...
#include <SelectMgr_TriangularFrustum.hxx>
Public Member Functions  
SelectMgr_TriangularFrustum ()  
Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3 projections onto near and far view frustum planes. More...  
~SelectMgr_TriangularFrustum ()  
virtual void  Build (const gp_Pnt2d &theP1, const gp_Pnt2d &theP2, const gp_Pnt2d &theP3) Standard_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) More...  
virtual NCollection_Handle< SelectMgr_BaseFrustum >  ScaleAndTransform (const Standard_Integer theScale, const gp_Trsf &theTrsf) Standard_OVERRIDE 
Returns a copy of the frustum transformed according to the matrix given. More...  
virtual Standard_Boolean  Overlaps (const SelectMgr_Vec3 &theMinPnt, const SelectMgr_Vec3 &theMaxPnt, Standard_Real &theDepth) Standard_OVERRIDE 
SAT intersection test between defined volume and given axisaligned box. More...  
virtual Standard_Boolean  Overlaps (const SelectMgr_Vec3 &theMinPt, const SelectMgr_Vec3 &theMaxPt, Standard_Boolean *theInside) Standard_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  Overlaps (const gp_Pnt &thePnt, Standard_Real &theDepth) Standard_OVERRIDE 
Intersection test between defined volume and given point. More...  
virtual Standard_Boolean  Overlaps (const Handle< TColgp_HArray1OfPnt > &theArrayOfPnts, Select3D_TypeOfSensitivity theSensType, Standard_Real &theDepth) Standard_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  Overlaps (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, Standard_Real &theDepth) Standard_OVERRIDE 
Checks if line segment overlaps selecting frustum. More...  
virtual Standard_Boolean  Overlaps (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, const gp_Pnt &thePnt3, Select3D_TypeOfSensitivity theSensType, Standard_Real &theDepth) Standard_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...  
void  Clear () 
Nullifies the handle to corresponding builder instance to prevent memory leaks. 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 toletance set to 2, orthographic camera and empty frustum builder. More...  
virtual  ~SelectMgr_BaseFrustum () 
void  SetCamera (const Handle< Graphic3d_Camera > &theCamera) 
Passes camera projection and orientation matrices to builder. More...  
void  SetCamera (const Graphic3d_Mat4d &theProjection, const Graphic3d_Mat4d &theOrientation, const Standard_Integer theIsOrthographic) 
Passes camera projection and orientation matrices to builder. More...  
void  SetPixelTolerance (const Standard_Integer theTol) 
void  SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight) 
void  SetViewport (const Standard_Real theX, const Standard_Real theY, const Standard_Real theWidth, const Standard_Real theHeight) 
Passes viewport parameters to builder. More...  
void  SetBuilder (const Handle< SelectMgr_FrustumBuilder > &theBuilder) 
Nullifies the builder created in the constructor and copies the pointer given. More...  
virtual void  Build (const gp_Pnt2d &) 
Builds volume according to the point and given pixel tolerance. More...  
virtual void  Build (const gp_Pnt2d &, const gp_Pnt2d &) 
Builds volume according to the selected rectangle. More...  
virtual void  Build (const TColgp_Array1OfPnt2d &) 
Builds selecting volumes set according to polyline points. More...  
virtual Standard_Boolean  Overlaps (const gp_Pnt &thePnt) 
Intersection test between defined volume and given point Does not perform depth calculation, so this method is defined as helper function for inclusion test. Therefore, its implementation makes sense only for rectangular frustum with box selection mode activated. More...  
virtual Standard_Real  DistToGeometryCenter (const gp_Pnt &theCOG) 
Measures distance between 3d projection of userpicked screen point and given point theCOG. More...  
virtual gp_Pnt  DetectedPoint (const Standard_Real theDepth) const 
virtual Standard_Boolean  IsClipped (const Graphic3d_SequenceOfHClipPlane &thePlanes, const Standard_Real theDepth) 
Checks if the point of sensitive in which selection was detected belongs to the region defined by clipping planes. More...  
Additional Inherited Members  
Protected Member Functions inherited from SelectMgr_Frustum< 3 >  
Standard_Boolean  hasOverlap (const SelectMgr_Vec3 &theBoxMin, const SelectMgr_Vec3 &theBoxMax, Standard_Boolean *theInside=NULL) 
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  hasOverlap (const gp_Pnt &thePnt) 
SAT intersection test between defined volume and given point. More...  
Standard_Boolean  hasOverlap (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2) 
SAT intersection test between defined volume and given segment. More...  
Standard_Boolean  hasOverlap (const Handle< TColgp_HArray1OfPnt > &theArrayOfPnts, gp_Vec &theNormal) 
SAT intersection test between frustum given and planar convex polygon represented as ordered point set. More...  
Standard_Boolean  hasOverlap (const gp_Pnt &thePnt1, const gp_Pnt &thePnt2, const gp_Pnt &thePnt3, gp_Vec &theNormal) 
SAT intersection test between defined volume and given triangle. 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...  
Standard_Boolean  myIsOrthographic 
Defines if current camera is orthographic. More...  
Handle< SelectMgr_FrustumBuilder >  myBuilder 
A tool implementing methods for volume build. 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).

inline 
Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3 projections onto near and far view frustum planes.
SelectMgr_TriangularFrustum::~SelectMgr_TriangularFrustum  (  ) 

virtual 
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)
Reimplemented from SelectMgr_BaseFrustum.
void SelectMgr_TriangularFrustum::Clear  (  ) 
Nullifies the handle to corresponding builder instance to prevent memory leaks.

virtual 
SAT intersection test between defined volume and given axisaligned box.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
Returns true if selecting volume is overlapped by axisaligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
Intersection test between defined volume and given point.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
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.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
Checks if line segment overlaps selecting frustum.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
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.
Reimplemented from SelectMgr_BaseFrustum.

virtual 
Returns a copy of the frustum transformed according to the matrix given.
Reimplemented from SelectMgr_BaseFrustum.