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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.
This commit is contained in:
vpa
bugmaster
181
src/SelectMgr/SelectMgr_SensitiveEntitySet.cxx
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181
src/SelectMgr/SelectMgr_SensitiveEntitySet.cxx
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// Created on: 2014-08-15
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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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#include <SelectMgr_SensitiveEntitySet.hxx>
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#include <BVH_BinnedBuilder.hxx>
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#include <Select3D_SensitiveEntity.hxx>
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#include <SelectMgr_SensitiveEntity.hxx>
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//=======================================================================
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// function : SelectMgr_SensitiveEntitySet
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// purpose :
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//=======================================================================
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SelectMgr_SensitiveEntitySet::SelectMgr_SensitiveEntitySet()
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{
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myBuilder = new BVH_BinnedBuilder<Standard_Real, 3, 32> (1, 32, Standard_True);
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}
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//=======================================================================
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// function : Append
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// purpose : Adds new entity to the set and marks BVH tree for rebuild
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//=======================================================================
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void SelectMgr_SensitiveEntitySet::Append (const SelectMgr_HSensitiveEntity& theEntity)
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{
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if (!theEntity->BaseSensitive()->IsKind ("Select3D_SensitiveEntity"))
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{
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theEntity->ResetSelectionActiveStatus();
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return;
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}
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myEntities.Append (theEntity);
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myEntityIdxs.Append (myEntities.Size());
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MarkDirty();
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}
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//=======================================================================
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// function : Append
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// purpose : Adds every entity of selection theSelection to the set
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// and marks BVH tree for rebuild
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//=======================================================================
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void SelectMgr_SensitiveEntitySet::Append (const Handle(SelectMgr_Selection)& theSelection)
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{
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for (theSelection->Init(); theSelection->More(); theSelection->Next())
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{
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if (!theSelection->Sensitive()->BaseSensitive()->IsKind ("Select3D_SensitiveEntity"))
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{
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theSelection->Sensitive()->ResetSelectionActiveStatus();
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continue;
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}
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myEntities.Append (theSelection->Sensitive());
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myEntityIdxs.Append (myEntities.Size());
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}
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MarkDirty();
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}
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//=======================================================================
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// function : Remove
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// purpose : Removes entity from the set and marks BVH tree for rebuild
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//=======================================================================
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void SelectMgr_SensitiveEntitySet::Remove (const SelectMgr_HSensitiveEntity& theEntity)
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{
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for (Standard_Integer anEntityIdx = 1; anEntityIdx <= myEntities.Size(); ++anEntityIdx)
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{
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if (myEntities.Value (anEntityIdx) == theEntity)
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{
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myEntities.Remove (anEntityIdx);
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myEntityIdxs.Clear();
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for (Standard_Integer anEntityIndexesIter = 1; anEntityIndexesIter <= myEntities.Size(); ++anEntityIndexesIter)
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{
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myEntityIdxs.Append (anEntityIndexesIter);
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}
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MarkDirty();
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break;
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}
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}
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}
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//=======================================================================
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// function : Remove
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// purpose : Removes every entity of selection theSelection from the set
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// and marks BVH tree for rebuild
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//=======================================================================
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void SelectMgr_SensitiveEntitySet::Remove (const Handle(SelectMgr_Selection)& theSelection)
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{
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for (theSelection->Init(); theSelection->More(); theSelection->Next())
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{
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for (Standard_Integer anEntityIdx = 1; anEntityIdx <= myEntities.Size(); ++anEntityIdx)
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{
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if (myEntities.Value (anEntityIdx) == theSelection->Sensitive())
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{
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myEntities.Remove (anEntityIdx);
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MarkDirty();
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}
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}
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}
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if (BVH_Object<Standard_Real, 3>::myIsDirty)
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{
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myEntityIdxs.Clear();
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for (Standard_Integer anEntityIdxsIter = 1; anEntityIdxsIter <= myEntities.Size(); ++anEntityIdxsIter)
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{
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myEntityIdxs.Append (anEntityIdxsIter);
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}
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}
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}
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//=======================================================================
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// function : Box
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// purpose : Returns bounding box of entity with index theIdx
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//=======================================================================
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Select3D_BndBox3d SelectMgr_SensitiveEntitySet::Box (const Standard_Integer theIndex) const
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{
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Standard_Integer anEntityIdx = myEntityIdxs.Value (theIndex + 1);
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return myEntities.Value (anEntityIdx)->BaseSensitive()->BoundingBox();
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}
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//=======================================================================
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// function : Center
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// purpose : Returns geometry center of sensitive entity index theIdx
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// along the given axis theAxis
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//=======================================================================
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Standard_Real SelectMgr_SensitiveEntitySet::Center (const Standard_Integer theIndex,
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const Standard_Integer theAxis) const
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{
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Standard_Integer anEntityIdx = myEntityIdxs.Value (theIndex + 1);
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const Handle(SelectBasics_SensitiveEntity)& aBasicEntity =
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myEntities.Value (anEntityIdx)->BaseSensitive();
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const Handle(Select3D_SensitiveEntity)& aSensitive =
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Handle(Select3D_SensitiveEntity)::DownCast (aBasicEntity);
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const gp_Pnt aCenter = aSensitive->CenterOfGeometry();
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Standard_Real aCenterCoord = 0.0;
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aCenterCoord = theAxis == 0 ? aCenter.X() :
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(theAxis == 1 ? aCenter.Y() : aCenter.Z());
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return aCenterCoord;
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}
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//=======================================================================
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// function : Swap
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// purpose : Swaps items with indexes theIdx1 and theIdx2
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//=======================================================================
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void SelectMgr_SensitiveEntitySet::Swap (const Standard_Integer theIndex1,
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const Standard_Integer theIndex2)
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{
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Standard_Integer anEntityIdx1 = myEntityIdxs.Value (theIndex1 + 1);
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Standard_Integer anEntityIdx2 = myEntityIdxs.Value (theIndex2 + 1);
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myEntityIdxs.ChangeValue (theIndex1 + 1) = anEntityIdx2;
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myEntityIdxs.ChangeValue (theIndex2 + 1) = anEntityIdx1;
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}
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//=======================================================================
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// function : Size
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// purpose : Returns the amount of entities
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//=======================================================================
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Standard_Integer SelectMgr_SensitiveEntitySet::Size() const
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{
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return myEntityIdxs.Size();
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}
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//=======================================================================
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// function : GetSensitiveById
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// purpose : Returns the entity with index theIndex in the set
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//=======================================================================
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const SelectMgr_HSensitiveEntity& SelectMgr_SensitiveEntitySet::GetSensitiveById
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(const Standard_Integer theIndex) const
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{
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Standard_Integer anIdx = myEntityIdxs.Value (theIndex + 1);
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return myEntities.Value (anIdx);
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}
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