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https://git.dev.opencascade.org/repos/occt.git
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f751596e46
Redesign of selection mechanism: - implemented 3-level BVH tree for selection; - selection now calculates in 3D space; - intersection tests were moved to SelectMgr_BaseFrustum descendants; - removed .cdl files in Select3D and .cdl related to selection in MeshVS; - SelectMgr_ViewerSelectors are now shared between local and global contexts; - transformations of sensitive entities are now stored in SelectMgr_SelectableObject only. Sensitive entities are independent from transformations, it is applied to SelectMgr_SelectingVolumeManager instance only; - connected and multiple connected interactive objects are now represented by their child objects only for SelectMgr_SelectionManager; - if interactive object has child objects, they will be stored as separate objects in SelectMgr_SelectionManager now. - test cases bugs/vis/bug24623_1, bug24623_2, bug24623_3, bug24623_4 to test performance and memory issues.
82 lines
3.9 KiB
C++
82 lines
3.9 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_TriangularFrustumSet_HeaderFile
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#define _SelectMgr_TriangularFrustumSet_HeaderFile
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#include <NCollection_Handle.hxx>
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#include <NCollection_List.hxx>
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#include <SelectMgr_BaseFrustum.hxx>
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#include <SelectMgr_TriangularFrustum.hxx>
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typedef NCollection_Handle<SelectMgr_TriangularFrustum> SelectMgr_HTriangularFrustum;
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typedef NCollection_List<SelectMgr_HTriangularFrustum> SelectMgr_TriangFrustums;
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typedef NCollection_List<SelectMgr_HTriangularFrustum>::Iterator SelectMgr_TriangFrustumsIter;
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//! This class is used to handle polyline selection. The main principle of polyline selection
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//! algorithm is to split the polygon defined by polyline onto triangles. Than each of
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//! them is considered as a base for triangular frustum building. In other
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//! words, each triangle vertiex will be projected from 2d screen space to 3d world space
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//! onto near and far view frustum planes. Thus, the projected triangles make up the bases of
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//! selecting frustum. When the set of such frustums is created, the function determining
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//! selection iterates through triangular frustum set and searches for overlap with any
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//! frustum.
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class SelectMgr_TriangularFrustumSet : public SelectMgr_BaseFrustum
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{
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public:
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SelectMgr_TriangularFrustumSet() {};
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~SelectMgr_TriangularFrustumSet() {};
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//! Meshes polygon bounded by polyline. Than organizes a set of triangular frustums,
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//! where each triangle's projection onto near and far view frustum planes is
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//! considered as a frustum base
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virtual void Build (const TColgp_Array1OfPnt2d& thePoints) Standard_OVERRIDE;
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//! Returns a copy of the frustum with all sub-volumes transformed according to the matrix given
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virtual NCollection_Handle<SelectMgr_BaseFrustum> Transform (const gp_Trsf& theTrsf) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const BVH_Box<Standard_Real, 3>& theBox,
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Standard_Real& theDepth) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPnt,
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const SelectMgr_Vec3& theMaxPnt) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const gp_Pnt& thePt,
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Standard_Real& theDepth) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPts,
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Select3D_TypeOfSensitivity theSensType,
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Standard_Real& theDepth) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const gp_Pnt& thePt1,
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const gp_Pnt& thePt2,
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Standard_Real& theDepth) Standard_OVERRIDE;
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virtual const Standard_Boolean Overlaps (const gp_Pnt& thePt1,
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const gp_Pnt& thePt2,
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const gp_Pnt& thePt3,
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Select3D_TypeOfSensitivity theSensType,
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Standard_Real& theDepth) Standard_OVERRIDE;
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private:
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SelectMgr_TriangFrustums myFrustums;
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};
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#endif // _SelectMgr_TriangularFrustumSet_HeaderFile
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