liboce-visualization-dev 0.18.2-2build1 / usr / include / oce / Select3D_SensitiveGroup.hxx

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// Created on: 1998-04-16
// Created by: Robert COUBLANC
// Copyright (c) 1998-1999 Matra Datavision
// Copyright (c) 1999-2014 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 _Select3D_SensitiveGroup_HeaderFile
#define _Select3D_SensitiveGroup_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineHandle.hxx>
#include <Standard_Type.hxx>

#include <Select3D_EntitySequence.hxx>
#include <Select3D_SensitiveEntity.hxx>
#include <Select3D_SensitiveSet.hxx>
#include <Handle_SelectBasics_EntityOwner.hxx>
#include <SelectMgr_SelectingVolumeManager.hxx>

class SelectBasics_EntityOwner;
class TopLoc_Location;


//! A framework to define selection of a sensitive group
//!          by a sensitive entity which is a set of 3D sensitive entities.
//!          Remark: 2 modes are possible for rectangle selection
//!          the group is considered selected
//!          1) when all the entities inside are selected in the rectangle
//!          2) only one entity inside is selected by the rectangle
//!          By default the "Match All entities" mode is set.
class Select3D_SensitiveGroup : public Select3D_SensitiveSet
{
public:

  //! Constructs an empty sensitive group object.
  //! This is a set of sensitive 3D entities. The sensitive
  //! entities will be defined using the function Add to fill
  //! the entity owner OwnerId. If MatchAll is false, nothing can be added.
  Standard_EXPORT Select3D_SensitiveGroup (const Handle(SelectBasics_EntityOwner)& theOwnerId,
                                           const Standard_Boolean theIsMustMatchAll = Standard_True);

  //! Constructs a sensitive group object defined by the list
  //! TheList and the entity owner OwnerId. If MatchAll is false, nothing is done.
  Standard_EXPORT Select3D_SensitiveGroup (const Handle(SelectBasics_EntityOwner)& theOwnerId,
                                           Select3D_EntitySequence& theEntities,
                                           const Standard_Boolean theIsMustMatchAll = Standard_True);

  //! Adds the list of sensitive entities LL to the empty
  //! sensitive group object created at construction time.
  Standard_EXPORT void Add (Select3D_EntitySequence& theEntities);

  //! Adds the sensitive entity aSensitive to the non-empty
  //! sensitive group object created at construction time.
  Standard_EXPORT void Add (const Handle(Select3D_SensitiveEntity)& theSensitive);

  Standard_EXPORT void Remove (const Handle(Select3D_SensitiveEntity)& theSensitive);

  //! Removes all sensitive entities from the list used at the
  //! time of construction, or added using the function Add.
  Standard_EXPORT void Clear();

  //! Returns true if the sensitive entity aSensitive is in
  //! the list used at the time of construction, or added using the function Add.
  Standard_EXPORT Standard_Boolean IsIn (const Handle(Select3D_SensitiveEntity)& theSensitive) const;

  //! Sets the requirement that all sensitive entities in the
  //! list used at the time of construction, or added using
  //! the function Add must be matched.
  void SetMatchType (const Standard_Boolean theIsMustMatchAll);

  //! Returns true if all sensitive entities in the list used
  //! at the time of construction, or added using the function Add must be matched.
  Standard_Boolean MustMatchAll() const;

  //! Checks whether the group overlaps current selecting volume
  Standard_EXPORT virtual Standard_Boolean Matches (SelectBasics_SelectingVolumeManager& theMgr,
                                                    SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;

  //! Returns the amount of sub-entities
  Standard_EXPORT virtual Standard_Integer NbSubElements() Standard_OVERRIDE;

  Standard_EXPORT virtual Handle(Select3D_SensitiveEntity) GetConnected() Standard_OVERRIDE;

  //! Sets the owner for all entities in group
  Standard_EXPORT void Set (const Handle(SelectBasics_EntityOwner)& theOwnerId);

  //! Gets group content
  const Select3D_EntitySequence& GetEntities() const;

  //! Returns bounding box of the group. If location transformation
  //! is set, it will be applied
  Standard_EXPORT virtual Select3D_BndBox3d BoundingBox() Standard_OVERRIDE;

  //! Returns center of entity set. If location transformation
  //! is set, it will be applied
  Standard_EXPORT virtual gp_Pnt CenterOfGeometry() const Standard_OVERRIDE;

  //! Returns bounding box of sensitive entity with index theIdx
  Standard_EXPORT virtual Select3D_BndBox3d Box (const Standard_Integer theIdx) const Standard_OVERRIDE;

  //! Returns geometry center of sensitive entity index theIdx in
  //! the vector along the given axis theAxis
  Standard_EXPORT virtual Standard_Real Center (const Standard_Integer theIdx,
                                                const Standard_Integer theAxis) const Standard_OVERRIDE;

  //! Swaps items with indexes theIdx1 and theIdx2 in the vector
  Standard_EXPORT virtual void Swap (const Standard_Integer theIdx1,
                                     const Standard_Integer theIdx2) Standard_OVERRIDE;

  //! Returns the length of vector of sensitive entities
  Standard_EXPORT virtual Standard_Integer Size() const Standard_OVERRIDE;

  DEFINE_STANDARD_RTTI(Select3D_SensitiveGroup)

private:

  //! Checks whether the entity with index theIdx overlaps the current selecting volume
  virtual Standard_Boolean overlapsElement (SelectBasics_SelectingVolumeManager& theMgr,
                                            Standard_Integer theElemIdx,
                                            Standard_Real& theMatchDepth) Standard_OVERRIDE;

  //! Checks whether the entity with index theIdx is inside the current selecting volume
  virtual Standard_Boolean elementIsInside (SelectBasics_SelectingVolumeManager& theMgr,
                                            const Standard_Integer               theElemIdx) Standard_OVERRIDE;

  //! Calculates distance from the 3d projection of used-picked screen point to center of the geometry
  virtual Standard_Real distanceToCOG (SelectBasics_SelectingVolumeManager& theMgr) Standard_OVERRIDE;

private:

  Select3D_EntitySequence              myEntities;           //!< Grouped sensitive entities
  Standard_Boolean                     myMustMatchAll;       //!< Determines whether all entities in the group should be overlapped or not
  gp_Pnt                               myCenter;             //!< Center of geometry of the group
  mutable Select3D_BndBox3d            myBndBox;             //!< Bounding box of the group
  NCollection_Vector<Standard_Integer> myBVHPrimIndexes;     //!< Vector of sub-entities indexes for BVH tree build
};

DEFINE_STANDARD_HANDLE(Select3D_SensitiveGroup, Select3D_SensitiveEntity)

#include <Select3D_SensitiveGroup.lxx>

#endif // _Select3D_SensitiveGroup_HeaderFile

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