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0024623: Visualization - improve selection mechanism
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.
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vpa
bugmaster
133
src/SelectMgr/SelectMgr_SelectingVolumeManager.hxx
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133
src/SelectMgr/SelectMgr_SelectingVolumeManager.hxx
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// 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_SelectingVolumeManager_HeaderFile
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#define _SelectMgr_SelectingVolumeManager_HeaderFile
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#include <NCollection_Handle.hxx>
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#include <Graphic3d_Camera.hxx>
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#include <Graphic3d_SequenceOfHClipPlane.hxx>
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#include <SelectMgr_BaseFrustum.hxx>
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#include <SelectMgr_RectangularFrustum.hxx>
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#include <SelectMgr_TriangularFrustumSet.hxx>
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#include <SelectBasics_SelectingVolumeManager.hxx>
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//! This class is used to switch between active selecting volumes depending
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//! on selection type chosen by the user
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class SelectMgr_SelectingVolumeManager : public SelectBasics_SelectingVolumeManager
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{
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public:
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//! Creates instances of all available selecting volume types
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Standard_EXPORT SelectMgr_SelectingVolumeManager (Standard_Boolean theToAllocateFrustums = Standard_True);
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Standard_EXPORT virtual ~SelectMgr_SelectingVolumeManager() {};
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//! Returns a copy of active frustum transformed according to the matrix given
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Standard_EXPORT virtual SelectMgr_SelectingVolumeManager Transform (const gp_Trsf& theTrsf);
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Standard_EXPORT virtual const Standard_Integer GetActiveSelectionType() const Standard_OVERRIDE;
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Standard_EXPORT void SetActiveSelectionType (const SelectionType& theType);
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//! Updates camera projection and orientation matrices in all selecting volumes
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Standard_EXPORT void SetCamera (const Handle(Graphic3d_Camera) theCamera);
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//! Updates camera projection and orientation matrices in all selecting volumes
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Standard_EXPORT void SetCamera (const Graphic3d_Mat4d& theProjection,
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const Graphic3d_Mat4d& theOrientation,
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const Standard_Boolean theIsOrthographic);
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//! Updates viewport in all selecting volumes
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Standard_EXPORT void SetViewport (const Standard_Real theX,
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const Standard_Real theY,
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const Standard_Real theWidth,
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const Standard_Real theHeight);
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//! Updates pixel tolerance in all selecting volumes
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Standard_EXPORT void SetPixelTolerance (const Standard_Real theTolerance);
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//! Updates window size in all selecting volumes
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Standard_EXPORT void SetWindowSize (const Standard_Integer theWidth, const Standard_Integer theHeight);
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//! Builds rectangular selecting frustum for point selection
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Standard_EXPORT void BuildSelectingVolume (const gp_Pnt2d& thePoint);
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//! Builds rectangular selecting frustum for box selection
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Standard_EXPORT void BuildSelectingVolume (const gp_Pnt2d& theMinPt,
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const gp_Pnt2d& theMaxPt);
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//! Builds set of triangular selecting frustums for polyline selection
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Standard_EXPORT void BuildSelectingVolume (const TColgp_Array1OfPnt2d& thePoints);
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//! SAT intersection test between defined volume and given axis-aligned box
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Standard_EXPORT virtual const Standard_Boolean Overlaps (const BVH_Box<Standard_Real, 3>& theBndBox,
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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 const Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPt,
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const SelectMgr_Vec3& theMaxPt) Standard_OVERRIDE;
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//! Intersection test between defined volume and given point
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Standard_EXPORT virtual const Standard_Boolean Overlaps (const gp_Pnt& thePt,
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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 const Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPts,
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Standard_Integer 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 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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//! 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 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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Standard_Integer theSensType,
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Standard_Real& theDepth) Standard_OVERRIDE;
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//! Measures distance between 3d projection of user-picked
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//! screen point and given point theCOG
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Standard_EXPORT virtual const Standard_Real DistToGeometryCenter (const gp_Pnt& theCOG) Standard_OVERRIDE;
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//! Calculates the point on a view ray that was detected during the run of selection algo by given depth. Is valid for point
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//! selection only
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Standard_EXPORT virtual NCollection_Vec3<Standard_Real> DetectedPoint (const Standard_Real theDepth) const Standard_OVERRIDE;
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//! Checks if the point of sensitive in which selection was detected belongs
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//! to the region defined by clipping planes
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Standard_EXPORT virtual const Standard_Boolean IsClipped (const Graphic3d_SequenceOfHClipPlane& thePlanes,
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const Standard_Real& theDepth);
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private:
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enum { Frustum, FrustumSet, VolumeTypesNb }; //!< Defines the amount of available selecting volumes
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NCollection_Handle<SelectMgr_BaseFrustum> mySelectingVolumes[VolumeTypesNb]; //!< Array of selecting volumes
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};
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#endif
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