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occt/src/SelectMgr/SelectMgr_SelectableObjectSet.hxx
vpa 3bf9a45f7a 0026195: Visualization - optimize selection algorithms
- initial transformation of triangulation is now applied to selecting frustum;
- switched from NCollection_Vec3 to gp collections to avoid conversions and usage of macros;
- calculation of frustum was refactored to reduce its build time;
- double pixel tolerances for selection were replaced by integer ones;
- switched to splitting along the main axis only in SelectMgr BVH selection primitive sets.
2015-09-10 15:00:04 +03:00

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// Created on: 2014-08-15
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _SelectMgr_SelectableObjectSet_HeaderFile
#define _SelectMgr_SelectableObjectSet_HeaderFile
#include <BVH_PrimitiveSet.hxx>
#include <Select3D_BndBox3d.hxx>
#include <SelectMgr_SelectableObject.hxx>
#include <SelectMgr_VectorTypes.hxx>
#include <NCollection_IndexedMap.hxx>
//! The purpose of this class is to organize all selectable objects into
//! data structure, allowing to build BVH tree. For selectable objects
//! binned BVH builder is used with 32 bins and 1 element per leaf.
class SelectMgr_SelectableObjectSet : public BVH_PrimitiveSet<Standard_Real, 3>
{
public:
//! Creates new empty objects set and initializes BVH tree
//! builder to Binned builder with 1 element per list
Standard_EXPORT SelectMgr_SelectableObjectSet();
//! Releases resources of selectable object set.
virtual ~SelectMgr_SelectableObjectSet() { }
//! Adds new object to the set and marks BVH tree for rebuild.
//! @return true if structure added, otherwise returns false (structure already in the set).
Standard_EXPORT Standard_Boolean Append (const Handle(SelectMgr_SelectableObject)& theObject);
//! Removes object theObject from set and marks BVH tree for rebuild.
//! @return true if structure removed, otherwise returns false (structure is not in the set).
Standard_EXPORT Standard_Boolean Remove (const Handle(SelectMgr_SelectableObject)& theObject);
//! Returns bounding box of object with index theIndex
Standard_EXPORT virtual Select3D_BndBox3d Box (const Standard_Integer theIndex) const Standard_OVERRIDE;
//! Returns center of object with index theIndex in the set
//! along the given axis theAxis
Standard_EXPORT virtual Standard_Real Center (const Standard_Integer theIndex,
const Standard_Integer theAxis) const Standard_OVERRIDE;
//! Swaps items with indexes theIndex1 and theIndex2 in the set
Standard_EXPORT virtual void Swap (const Standard_Integer theIndex1,
const Standard_Integer theIndex2) Standard_OVERRIDE;
//! Returns size of objects set
Standard_EXPORT virtual Standard_Integer Size() const Standard_OVERRIDE;
//! Returns object from set by theIndex given
const Handle(SelectMgr_SelectableObject)& GetObjectById (const Standard_Integer theIndex) const
{
return myObjects.FindKey (theIndex + 1);
}
//! Returns true if this objects set contains theObject given
Standard_Boolean Contains (const Handle(SelectMgr_SelectableObject)& theObject) const
{
return myObjects.Contains (theObject);
}
private:
NCollection_IndexedMap<Handle(SelectMgr_SelectableObject)> myObjects;
};
#endif // _SelectMgr_SelectableObjectSet_HeaderFile