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0141024df5
The new transform persistence mode, with flag `Graphic3d_TMF_OrthoPers`, can be combined (bitwise OR operation) with the other persistence modes (2D, Trihedron or Zoom/Rotate Persistence) to make objects be rendered with orthographic projection when it is on a view with perspective projection. If the view already uses orthographic projection, there will be no difference. This feature was implemented to fix ViewCube being distorted when view with perspective projection changes size.
197 lines
11 KiB
C++
197 lines
11 KiB
C++
// Created on: 2014-05-22
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// Created by: Varvara POSKONINA
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// Copyright (c) 2005-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _SelectMgr_TriangularFrustum_HeaderFile
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#define _SelectMgr_TriangularFrustum_HeaderFile
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#include <SelectMgr_Frustum.hxx>
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//! This class contains representation of triangular selecting frustum, created in case
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//! of polyline selection, and algorithms for overlap detection between selecting frustum and sensitive entities.
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//! Overlap detection tests are implemented according to the terms of separating axis theorem (SAT).
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//! NOTE: the object of this class can be created only as part of SelectMgr_TriangularFrustumSet.
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class SelectMgr_TriangularFrustum : public SelectMgr_Frustum<3>
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{
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public:
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//! Auxiliary structure to define selection triangle
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struct SelectionTriangle
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{
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gp_Pnt2d Points[3];
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};
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public:
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//! Destructor.
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Standard_EXPORT virtual ~SelectMgr_TriangularFrustum();
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//! Initializes selection triangle by input points
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Standard_EXPORT void Init (const gp_Pnt2d& theP1,
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const gp_Pnt2d& theP2,
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const gp_Pnt2d& theP3);
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//! Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3
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//! projections onto near and far view frustum planes (only for triangular frustums)
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//! NOTE: it should be called after Init() method
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Standard_EXPORT virtual void Build() Standard_OVERRIDE;
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//! Returns FALSE (not applicable to this volume).
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virtual Standard_Boolean IsScalable() const Standard_OVERRIDE { return false; }
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//! Returns a copy of the frustum transformed according to the matrix given
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Standard_EXPORT virtual Handle(SelectMgr_BaseIntersector) ScaleAndTransform (const Standard_Integer theScale,
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const gp_GTrsf& theTrsf,
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const Handle(SelectMgr_FrustumBuilder)& theBuilder) const Standard_OVERRIDE;
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//! Returns a copy of the frustum using the given frustum builder configuration.
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//! Returned frustum should be re-constructed before being used.
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//! @param theBuilder [in] argument that represents corresponding settings for re-constructing transformed frustum from scratch;
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//! should NOT be NULL.
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//! @return a copy of the frustum with the input builder assigned
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Standard_EXPORT virtual Handle(SelectMgr_BaseIntersector) CopyWithBuilder (const Handle(SelectMgr_FrustumBuilder)& theBuilder) const Standard_OVERRIDE;
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public: //! @name SAT Tests for different objects
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//! SAT intersection test between defined volume and given axis-aligned box
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Standard_EXPORT virtual Standard_Boolean OverlapsBox (const SelectMgr_Vec3& theMinPnt,
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const SelectMgr_Vec3& theMaxPnt,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by axis-aligned bounding box
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//! with minimum corner at point theMinPt and maximum at point theMaxPt
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Standard_EXPORT virtual Standard_Boolean OverlapsBox (const SelectMgr_Vec3& theMinPt,
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const SelectMgr_Vec3& theMaxPt,
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Standard_Boolean* theInside) const Standard_OVERRIDE;
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//! Intersection test between defined volume and given point
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Standard_EXPORT virtual Standard_Boolean OverlapsPoint (const gp_Pnt& thePnt,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Always returns FALSE (not applicable to this selector).
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virtual Standard_Boolean OverlapsPoint (const gp_Pnt& ) const Standard_OVERRIDE
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{
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return Standard_False;
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}
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//! SAT intersection test between defined volume and given ordered set of points,
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//! representing line segments. The test may be considered of interior part or
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//! boundary line defined by segments depending on given sensitivity type
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Standard_EXPORT virtual Standard_Boolean OverlapsPolygon (const TColgp_Array1OfPnt& theArrayOfPnts,
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Select3D_TypeOfSensitivity theSensType,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Checks if line segment overlaps selecting frustum
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Standard_EXPORT virtual Standard_Boolean OverlapsSegment (const gp_Pnt& thePnt1,
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const gp_Pnt& thePnt2,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! SAT intersection test between defined volume and given triangle. The test may
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//! be considered of interior part or boundary line defined by triangle vertices
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//! depending on given sensitivity type
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Standard_EXPORT virtual Standard_Boolean OverlapsTriangle (const gp_Pnt& thePnt1,
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const gp_Pnt& thePnt2,
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const gp_Pnt& thePnt3,
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Select3D_TypeOfSensitivity theSensType,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by sphere with center theCenter
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//! and radius theRadius
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Standard_EXPORT virtual Standard_Boolean OverlapsSphere (const gp_Pnt& theCenter,
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const Standard_Real theRadius,
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Standard_Boolean* theInside = NULL) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by sphere with center theCenter
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//! and radius theRadius
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Standard_EXPORT virtual Standard_Boolean OverlapsSphere (const gp_Pnt& theCenter,
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const Standard_Real theRadius,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad
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//! and theTopRad, height theHeight and transformation to apply theTrsf.
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Standard_EXPORT virtual Standard_Boolean OverlapsCylinder (const Standard_Real theBottomRad,
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const Standard_Real theTopRad,
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const Standard_Real theHeight,
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const gp_Trsf& theTrsf,
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const Standard_Boolean theIsHollow,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by cylinder (or cone) with radiuses theBottomRad
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//! and theTopRad, height theHeight and transformation to apply theTrsf.
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Standard_EXPORT virtual Standard_Boolean OverlapsCylinder (const Standard_Real theBottomRad,
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const Standard_Real theTopRad,
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const Standard_Real theHeight,
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const gp_Trsf& theTrsf,
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const Standard_Boolean theIsHollow,
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Standard_Boolean* theInside = NULL) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by circle with radius theRadius,
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//! boolean theIsFilled and transformation to apply theTrsf.
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//! The position and orientation of the circle are specified
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//! via theTrsf transformation for gp::XOY() with center in gp::Origin().
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Standard_EXPORT virtual Standard_Boolean OverlapsCircle (const Standard_Real theRadius,
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const gp_Trsf& theTrsf,
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const Standard_Boolean theIsFilled,
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const SelectMgr_ViewClipRange& theClipRange,
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SelectBasics_PickResult& thePickResult) const Standard_OVERRIDE;
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//! Returns true if selecting volume is overlapped by circle with radius theRadius,
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//! boolean theIsFilled and transformation to apply theTrsf.
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//! The position and orientation of the circle are specified
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//! via theTrsf transformation for gp::XOY() with center in gp::Origin().
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Standard_EXPORT virtual Standard_Boolean OverlapsCircle (const Standard_Real theRadius,
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const gp_Trsf& theTrsf,
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const Standard_Boolean theIsFilled,
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Standard_Boolean* theInside = NULL) const Standard_OVERRIDE;
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public:
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//! Nullifies the handle to corresponding builder instance to prevent memory leaks
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Standard_EXPORT void Clear();
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//! Stores plane equation coefficients (in the following form:
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//! Ax + By + Cz + D = 0) to the given vector
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Standard_EXPORT virtual void GetPlanes (NCollection_Vector<SelectMgr_Vec4>& thePlaneEquations) const Standard_OVERRIDE;
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//! Dumps the content of me into the stream
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Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const Standard_OVERRIDE;
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protected:
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//! Creates an empty triangular frustum.
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Standard_EXPORT SelectMgr_TriangularFrustum();
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private:
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void cacheVertexProjections (SelectMgr_TriangularFrustum* theFrustum) const;
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protected:
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SelectionTriangle mySelTriangle; //!< parameters of selection triangle (it is used to build triangle frustum)
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public:
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DEFINE_STANDARD_RTTIEXT(SelectMgr_TriangularFrustum, SelectMgr_Frustum<3>)
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friend class SelectMgr_TriangularFrustumSet;
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};
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#endif // _SelectMgr_TriangularFrustum_HeaderFile
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