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 vertiex 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>
Public Member Functions | |
| SelectMgr_TriangularFrustumSet () | |
| ~SelectMgr_TriangularFrustumSet () | |
| virtual void | Build (const TColgp_Array1OfPnt2d &thePoints) Standard_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. More... | |
| virtual NCollection_Handle < SelectMgr_BaseFrustum > | Transform (const gp_Trsf &theTrsf) Standard_OVERRIDE |
| Returns a copy of the frustum with all sub-volumes 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 &theMinPnt, const SelectMgr_Vec3 &theMaxPnt, 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 &thePt, Standard_Real &theDepth) Standard_OVERRIDE |
| Intersection test between defined volume and given point. More... | |
| virtual Standard_Boolean | Overlaps (const Handle< TColgp_HArray1OfPnt > &theArrayOfPts, 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 &thePt1, const gp_Pnt &thePt2, Standard_Real &theDepth) Standard_OVERRIDE |
| Checks if line segment overlaps selecting frustum. More... | |
| virtual Standard_Boolean | Overlaps (const gp_Pnt &thePt1, const gp_Pnt &thePt2, const gp_Pnt &thePt3, 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... | |
 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 gp_Pnt2d &, const gp_Pnt2d &, const gp_Pnt2d &) |
| Builds volume according to the triangle given. 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 Attributes inherited from SelectMgr_BaseFrustum | |
| Standard_Real | 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... | |
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 vertiex 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
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Member Function Documentation
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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.
Reimplemented from SelectMgr_BaseFrustum.
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SAT intersection test between defined volume and given axis-aligned box.
Reimplemented from SelectMgr_BaseFrustum.
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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.
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Intersection test between defined volume and given point.
Reimplemented from SelectMgr_BaseFrustum.
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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.
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virtual |
Checks if line segment overlaps selecting frustum.
Reimplemented from SelectMgr_BaseFrustum.
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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.
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virtual |
Returns a copy of the frustum with all sub-volumes transformed according to the matrix given.
Reimplemented from SelectMgr_BaseFrustum.
The documentation for this class was generated from the following file:
