Open CASCADE Technology  6.9.0
Public Member Functions
SelectMgr_TriangularFrustum Class Reference

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>

Inheritance diagram for SelectMgr_TriangularFrustum:
Inheritance graph
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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
Transform (const gp_Trsf &theTrsf) Standard_OVERRIDE
 Returns a copy of the frustum transformed according to the matrix given. More...
 
virtual Standard_Boolean Overlaps (const BVH_Box< Standard_Real, 3 > &theBox, Standard_Real &theDepth) Standard_OVERRIDE
 SAT intersection test between defined volume and given axis-aligned 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 axis-aligned 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_Real 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 NCollection_Handle
< SelectMgr_BaseFrustum
Scale (const Standard_Real)
 IMPORTANT: Makes sense only for frustum built on a single point! Returns a copy of the frustum resized according to the scale factor given. More...
 
virtual Standard_Real DistToGeometryCenter (const gp_Pnt &theCOG)
 Measures distance between 3d projection of user-picked screen point and given point theCOG. More...
 
virtual SelectMgr_Vec3 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 axis-aligned 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, SelectMgr_Vec3 &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, SelectMgr_Vec3 &theNormal)
 SAT intersection test between defined volume and given triangle. More...
 
- Protected Attributes inherited from SelectMgr_Frustum< 3 >
SelectMgr_Vec3 myPlanes [N+2]
 Plane equations. More...
 
SelectMgr_Vec3 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...
 
SelectMgr_Vec3 myEdgeDirs [6]
 Cached edge directions. More...
 
- Protected Attributes inherited from SelectMgr_BaseFrustum
Standard_Real myPixelTolerance
 Pixel tolerance. More...
 
Standard_Boolean myIsOrthographic
 Defines if current camera is orthographic. More...
 
Handle< SelectMgr_FrustumBuildermyBuilder
 A tool implementing methods for volume build. More...
 

Detailed Description

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).

Constructor & Destructor Documentation

SelectMgr_TriangularFrustum::SelectMgr_TriangularFrustum ( )
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 ( )

Member Function Documentation

virtual void SelectMgr_TriangularFrustum::Build ( const gp_Pnt2d theP1,
const gp_Pnt2d theP2,
const gp_Pnt2d theP3 
)
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 Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const BVH_Box< Standard_Real, 3 > &  theBox,
Standard_Real theDepth 
)
virtual

SAT intersection test between defined volume and given axis-aligned box.

Reimplemented from SelectMgr_BaseFrustum.

virtual Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const SelectMgr_Vec3 theMinPt,
const SelectMgr_Vec3 theMaxPt,
Standard_Boolean theInside 
)
virtual

Returns true if selecting volume is overlapped by axis-aligned bounding box with minimum corner at point theMinPt and maximum at point theMaxPt.

Reimplemented from SelectMgr_BaseFrustum.

virtual Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const gp_Pnt thePnt,
Standard_Real theDepth 
)
virtual

Intersection test between defined volume and given point.

Reimplemented from SelectMgr_BaseFrustum.

virtual Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const Handle< TColgp_HArray1OfPnt > &  theArrayOfPnts,
Select3D_TypeOfSensitivity  theSensType,
Standard_Real theDepth 
)
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 Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const gp_Pnt thePnt1,
const gp_Pnt thePnt2,
Standard_Real theDepth 
)
virtual

Checks if line segment overlaps selecting frustum.

Reimplemented from SelectMgr_BaseFrustum.

virtual Standard_Boolean SelectMgr_TriangularFrustum::Overlaps ( const gp_Pnt thePnt1,
const gp_Pnt thePnt2,
const gp_Pnt thePnt3,
Select3D_TypeOfSensitivity  theSensType,
Standard_Real theDepth 
)
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 NCollection_Handle<SelectMgr_BaseFrustum> SelectMgr_TriangularFrustum::Transform ( const gp_Trsf theTrsf)
virtual

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

Reimplemented from SelectMgr_BaseFrustum.


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