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0001 // Created on: 1997-01-08
0002 // Created by: Robert COUBLANC
0003 // Copyright (c) 1997-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016 
0017 #ifndef _AIS_ConnectedInteractive_HeaderFile
0018 #define _AIS_ConnectedInteractive_HeaderFile
0019 
0020 #include <AIS_InteractiveObject.hxx>
0021 #include <AIS_KindOfInteractive.hxx>
0022 #include <TopoDS_Shape.hxx>
0023 
0024 //! Creates an arbitrary located instance of another Interactive Object,
0025 //! which serves as a reference.
0026 //! This allows you to use the Connected Interactive
0027 //! Object without having to recalculate presentation,
0028 //! selection or graphic structure. These are deduced
0029 //! from your reference object.
0030 //! The relation between the connected interactive object
0031 //! and its source is generally one of geometric transformation.
0032 //! AIS_ConnectedInteractive class supports selection mode 0 for any InteractiveObject and
0033 //! all standard modes if its reference based on AIS_Shape.
0034 //! Descendants may redefine ComputeSelection() though.
0035 //! Also ConnectedInteractive will handle HLR if its reference based on AIS_Shape.
0036 class AIS_ConnectedInteractive : public AIS_InteractiveObject
0037 {
0038   DEFINE_STANDARD_RTTIEXT(AIS_ConnectedInteractive, AIS_InteractiveObject)
0039 public:
0040 
0041   //! Disconnects the previous view and sets highlight
0042   //! mode to 0. This highlights the wireframe presentation
0043   //! aTypeOfPresentation3d.
0044   //! Top_AllView deactivates hidden line removal.
0045   Standard_EXPORT AIS_ConnectedInteractive(const PrsMgr_TypeOfPresentation3d aTypeOfPresentation3d = PrsMgr_TOP_AllView);
0046   
0047   //! Returns KOI_Object
0048   virtual AIS_KindOfInteractive Type() const Standard_OVERRIDE { return AIS_KindOfInteractive_Object; }
0049 
0050   //! Returns 0
0051   virtual Standard_Integer Signature() const Standard_OVERRIDE { return 0; }
0052   
0053   //! Establishes the connection between the Connected
0054   //! Interactive Object, anotherIobj, and its reference.
0055   void Connect (const Handle(AIS_InteractiveObject)& theAnotherObj) { connect (theAnotherObj, Handle(TopLoc_Datum3D)()); }
0056 
0057   //! Establishes the connection between the Connected
0058   //! Interactive Object, anotherIobj, and its reference.
0059   //! Locates instance in aLocation.
0060   void Connect (const Handle(AIS_InteractiveObject)& theAnotherObj,
0061                 const gp_Trsf& theLocation)  { connect (theAnotherObj, new TopLoc_Datum3D (theLocation)); }
0062 
0063   //! Establishes the connection between the Connected
0064   //! Interactive Object, anotherIobj, and its reference.
0065   //! Locates instance in aLocation.
0066   void Connect (const Handle(AIS_InteractiveObject)& theAnotherObj,
0067                 const Handle(TopLoc_Datum3D)& theLocation) { connect (theAnotherObj, theLocation); }
0068 
0069   //! Returns true if there is a connection established
0070   //! between the presentation and its source reference.
0071   Standard_Boolean HasConnection() const { return !myReference.IsNull(); }
0072 
0073   //! Returns the connection with the reference Interactive Object.
0074   const Handle(AIS_InteractiveObject)& ConnectedTo() const { return myReference; }
0075 
0076   //! Clears the connection with a source reference. The
0077   //! presentation will no longer be displayed.
0078   //! Warning Must be done before deleting the presentation.
0079   Standard_EXPORT void Disconnect();
0080 
0081   //! Informs the graphic context that the interactive Object
0082   //! may be decomposed into sub-shapes for dynamic selection.
0083   virtual Standard_Boolean AcceptShapeDecomposition() const Standard_OVERRIDE
0084   {
0085     return !myReference.IsNull() && myReference->AcceptShapeDecomposition();
0086   }
0087 
0088   //! Return true if reference presentation accepts specified display mode.
0089   virtual Standard_Boolean AcceptDisplayMode (const Standard_Integer theMode) const Standard_OVERRIDE
0090   {
0091     return myReference.IsNull()
0092         || myReference->AcceptDisplayMode (theMode);
0093   }
0094 
0095 protected:
0096 
0097   //! Calculates the view aPresentation and its updates.
0098   //! The latter are managed by aPresentationManager.
0099   //! The display mode aMode is 0 by default.
0100   //! this method is redefined virtual;
0101   //! when the instance is connected to another
0102   //! InteractiveObject,this method doesn't
0103   //! compute anything, but just uses the
0104   //! presentation of this last object, with
0105   //! a transformation if there's one stored.
0106   Standard_EXPORT virtual void Compute (const Handle(PrsMgr_PresentationManager)& thePrsMgr,
0107                                         const Handle(Prs3d_Presentation)& theprs,
0108                                         const Standard_Integer theMode) Standard_OVERRIDE;
0109 
0110   //! Computes the presentation according to a point of view.
0111   Standard_EXPORT virtual void computeHLR (const Handle(Graphic3d_Camera)& theProjector,
0112                                            const Handle(TopLoc_Datum3D)& theTrsf,
0113                                            const Handle(Prs3d_Presentation)& thePrs) Standard_OVERRIDE;
0114 
0115   //! Generates sensitive entities by copying
0116   //! them from myReference selection, creates and sets an entity
0117   //! owner for this entities and adds them to theSelection
0118   Standard_EXPORT virtual void ComputeSelection (const Handle(SelectMgr_Selection)& theSelection, const Standard_Integer theMode) Standard_OVERRIDE;
0119 
0120   //! Generates sensitive entities by copying
0121   //! them from myReference sub shapes selection, creates and sets an entity
0122   //! owner for this entities and adds them to theSelection
0123   Standard_EXPORT void computeSubShapeSelection (const Handle(SelectMgr_Selection)& theSelection, const Standard_Integer theMode);
0124 
0125   Standard_EXPORT void updateShape (const Standard_Boolean WithLocation = Standard_True);
0126 
0127   Standard_EXPORT void connect (const Handle(AIS_InteractiveObject)& theAnotherObj,
0128                                 const Handle(TopLoc_Datum3D)& theLocation);
0129 
0130 protected:
0131 
0132   Handle(AIS_InteractiveObject) myReference;
0133   TopoDS_Shape myShape;
0134 
0135 };
0136 
0137 DEFINE_STANDARD_HANDLE(AIS_ConnectedInteractive, AIS_InteractiveObject)
0138 
0139 #endif // _AIS_ConnectedInteractive_HeaderFile