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114b7bf18f
MeshVS_Mesh selection logic in MeshVS_SMF_Mesh mode (entire mesh) has been optimized. MeshVS_Mesh::ComputeSelection() now creates single sensitive entity MeshVS_CommonSensitiveEntity (new class) instead of small sensitive entity on each element. MeshVS_SensitiveQuad (new class) and Select3D_SensitiveTriangle are used instead of Select3D_SensitiveFace for local selection to reduce memory consumption when possible.
95 lines
4.9 KiB
C++
95 lines
4.9 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
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//! frustum and sensitive entities.
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//! Overlap detection tests are implemented according to the terms of separating axis
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//! theorem (SAT).
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class SelectMgr_TriangularFrustum : public SelectMgr_Frustum<3>
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{
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public:
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//! Creates new triangular frustum with bases of triangles with vertices theP1,
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//! theP2 and theP3 projections onto near and far view frustum planes
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SelectMgr_TriangularFrustum() {};
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Standard_EXPORT ~SelectMgr_TriangularFrustum();
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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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Standard_EXPORT virtual void Build (const gp_Pnt2d& theP1,
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const gp_Pnt2d& theP2,
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const gp_Pnt2d& theP3) Standard_OVERRIDE;
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//! Returns a copy of the frustum transformed according to the matrix given
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Standard_EXPORT virtual NCollection_Handle<SelectMgr_BaseFrustum> ScaleAndTransform (const Standard_Integer theScale,
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const gp_Trsf& theTrsf) Standard_OVERRIDE;
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// 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 Overlaps (const SelectMgr_Vec3& theMinPnt,
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const SelectMgr_Vec3& theMaxPnt,
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Standard_Real& theDepth) 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 Overlaps (const SelectMgr_Vec3& theMinPt,
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const SelectMgr_Vec3& theMaxPt,
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Standard_Boolean* theInside) Standard_OVERRIDE;
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//! Intersection test between defined volume and given point
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
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Standard_Real& theDepth) Standard_OVERRIDE;
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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 Overlaps (const TColgp_Array1OfPnt& theArrayOfPnts,
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Select3D_TypeOfSensitivity theSensType,
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Standard_Real& theDepth) Standard_OVERRIDE;
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//! Checks if line segment overlaps selecting frustum
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Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
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const gp_Pnt& thePnt2,
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Standard_Real& theDepth) 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 Overlaps (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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Standard_Real& theDepth) Standard_OVERRIDE;
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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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private:
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void cacheVertexProjections (SelectMgr_TriangularFrustum* theFrustum);
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DEFINE_STANDARD_RTTIEXT(SelectMgr_TriangularFrustum,Standard_Transient)
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};
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#endif // _SelectMgr_TriangularFrustum_HeaderFile
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