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 // Created on: 1995-01-25
 // Created by: Jean-Louis Frenkel
 // Copyright (c) 1995-1999 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 _PrsMgr_PresentableObject_HeaderFile
 #define _PrsMgr_PresentableObject_HeaderFile
 
 #include <Aspect_TypeOfFacingModel.hxx>
 #include <gp_GTrsf.hxx>
 #include <Graphic3d_ClipPlane.hxx>
 #include <Prs3d_Drawer.hxx>
 #include <PrsMgr_ListOfPresentableObjects.hxx>
 #include <PrsMgr_Presentation.hxx>
 #include <PrsMgr_Presentations.hxx>
 #include <PrsMgr_DisplayStatus.hxx>
 #include <PrsMgr_TypeOfPresentation3d.hxx>
 #include <TColStd_ListOfInteger.hxx>
 
 class PrsMgr_PresentationManager;
 Standard_DEPRECATED("Deprecated alias to PrsMgr_PresentationManager")
 typedef PrsMgr_PresentationManager PrsMgr_PresentationManager3d;
 
 //! A framework to supply the Graphic3d structure of the object to be presented.
 //! On the first display request, this structure is created by calling the appropriate algorithm and retaining this framework for further display.
 //! This abstract framework is inherited in Application Interactive Services (AIS), notably by AIS_InteractiveObject.
 //! Consequently, 3D presentation should be handled by the relevant daughter classes and their member functions in AIS.
 //! This is particularly true in the creation of new interactive objects.
 //!
 //! Key interface methods to be implemented by every Selectable Object:
 //! - AcceptDisplayMode() accepting display modes implemented by this object;
 //! - Compute() computing presentation for the given display mode index.
 //!
 //! Warning! Methods managing standard attributes (SetColor(), SetWidth(), SetMaterial()) have different meaning for objects of different type (or no meaning at all).
 //! Sub-classes might override these methods to modify Prs3d_Drawer or class properties providing a convenient short-cut depending on application needs.
 //! For more sophisticated configuring, Prs3d_Drawer should be modified directly, while short-cuts might be left unimplemented.
 class PrsMgr_PresentableObject : public Standard_Transient
 {
   DEFINE_STANDARD_RTTIEXT(PrsMgr_PresentableObject, Standard_Transient)
   friend class PrsMgr_Presentation;
   friend class PrsMgr_PresentationManager;
 public:
 
   //! Return presentations.
   PrsMgr_Presentations& Presentations() { return myPresentations; }
 
   //! Get ID of Z layer for main presentation.
   Graphic3d_ZLayerId ZLayer() const { return myDrawer->ZLayer(); }
 
   //! Set Z layer ID and update all presentations of the presentable object.
   //! The layers mechanism allows drawing objects in higher layers in overlay of objects in lower layers.
   Standard_EXPORT virtual void SetZLayer (const Graphic3d_ZLayerId theLayerId);
 
   //! Returns true if object has mutable nature (content or location are be changed regularly).
   //! Mutable object will be managed in different way than static onces (another optimizations).
   Standard_Boolean IsMutable() const { return myIsMutable; }
 
   //! Sets if the object has mutable nature (content or location will be changed regularly).
   //! This method should be called before object displaying to take effect.
   Standard_EXPORT virtual void SetMutable (const Standard_Boolean theIsMutable);
 
   //! Return view affinity mask.
   const Handle(Graphic3d_ViewAffinity)& ViewAffinity() const { return myViewAffinity; }
 
   //! Returns true if the Interactive Object has display mode setting overriding global setting (within Interactive Context).
   Standard_Boolean HasDisplayMode() const { return myDrawer->DisplayMode() != -1; }
 
   //! Returns the display mode setting of the Interactive Object.
   //! The range of supported display mode indexes should be specified within object definition and filtered by AccepDisplayMode().
   //! @sa AcceptDisplayMode()
   Standard_Integer DisplayMode() const { return myDrawer->DisplayMode(); }
 
   //! Sets the display mode for the interactive object.
   //! An object can have its own temporary display mode, which is different from that proposed by the interactive context.
   //! @sa AcceptDisplayMode()
   void SetDisplayMode (const Standard_Integer theMode)
   {
     if (AcceptDisplayMode (theMode))
     {
       myDrawer->SetDisplayMode (theMode);
     }
   }
 
   //! Removes display mode settings from the interactive object.
   void UnsetDisplayMode() { myDrawer->SetDisplayMode (-1); }
 
   //! Returns true if the Interactive Object is in highlight mode.
   //! @sa HilightAttributes()
   Standard_Boolean HasHilightMode() const { return !myHilightDrawer.IsNull() && myHilightDrawer->DisplayMode() != -1; }
 
   //! Returns highlight display mode.
   //! This is obsolete method for backward compatibility - use ::HilightAttributes() and ::DynamicHilightAttributes() instead.
   //! @sa HilightAttributes()
   Standard_Integer HilightMode() const { return !myHilightDrawer.IsNull() ? myHilightDrawer->DisplayMode() : -1; }
 
   //! Sets highlight display mode.
   //! This is obsolete method for backward compatibility - use ::HilightAttributes() and ::DynamicHilightAttributes() instead.
   //! @sa HilightAttributes()
   Standard_EXPORT void SetHilightMode (const Standard_Integer theMode);
 
   //! Unsets highlight display mode.
   //! @sa HilightAttributes()
   void UnsetHilightMode()
   {
     if (!myHilightDrawer.IsNull())
     {
       myHilightDrawer->SetDisplayMode (-1);
     }
     if (!myDynHilightDrawer.IsNull())
     {
       myDynHilightDrawer->SetDisplayMode (-1);
     }
   }
 
   //! Returns true if the class of objects accepts specified display mode index.
   //! The interactive context can have a default mode of representation for the set of Interactive Objects.
   //! This mode may not be accepted by a given class of objects.
   //! Consequently, this virtual method allowing us to get information about the class in question must be implemented.
   //! At least one display mode index should be accepted by this method.
   //! Although subclass can leave default implementation, it is highly desired defining exact list of supported modes instead,
   //! which is usually an enumeration for one object or objects class sharing similar list of display modes.
   virtual Standard_Boolean AcceptDisplayMode (const Standard_Integer theMode) const
   {
     (void )theMode;
     return Standard_True;
   }
 
   //! Returns the default display mode.
   virtual Standard_Integer DefaultDisplayMode() const { return 0; }
 
   //! Returns TRUE if any active presentation has invalidation flag.
   //! @param theToIncludeHidden when TRUE, also checks hidden presentations
   Standard_EXPORT Standard_Boolean ToBeUpdated (Standard_Boolean theToIncludeHidden = Standard_False) const;
 
   //! Flags presentation to be updated; UpdatePresentations() will recompute these presentations.
   //! @param theMode presentation (display mode) to invalidate, or -1 to invalidate them all
   Standard_EXPORT void SetToUpdate (Standard_Integer theMode);
 
   //! flags all the Presentations to be Updated.
   void SetToUpdate() { SetToUpdate (-1); }
 
   //! Returns true if the interactive object is infinite; FALSE by default.
   //! This flag affects various operations operating on bounding box of graphic presentations of this object.
   //! For instance, infinite objects are not taken in account for View FitAll.
   //! This does not necessarily means that object is actually infinite,
   //! auxiliary objects might be also marked with this flag to achieve desired behavior.
   Standard_Boolean IsInfinite() const { return myInfiniteState; }
 
   //! Sets if object should be considered as infinite.
   Standard_EXPORT void SetInfiniteState (const Standard_Boolean theFlag = Standard_True);
 
   //! Returns information on whether the object accepts display in HLR mode or not.
   PrsMgr_TypeOfPresentation3d TypeOfPresentation3d() const { return myTypeOfPresentation3d; }
 
   //! Set type of presentation.
   Standard_EXPORT void SetTypeOfPresentation (const PrsMgr_TypeOfPresentation3d theType);
 
   //! Return presentation display status; PrsMgr_DisplayStatus_None by default.
   PrsMgr_DisplayStatus DisplayStatus() const { return myDisplayStatus; }
 
 public: //! @name presentation attributes
 
   //! Returns the attributes settings.
   const Handle(Prs3d_Drawer)& Attributes() const { return myDrawer; }
 
   //! Initializes the drawing tool theDrawer.
   virtual void SetAttributes(const Handle(Prs3d_Drawer)& theDrawer) { myDrawer = theDrawer; }
 
   //! Returns the hilight attributes settings.
   //! When not NULL, overrides both Prs3d_TypeOfHighlight_LocalSelected and Prs3d_TypeOfHighlight_Selected defined within AIS_InteractiveContext::HighlightStyle().
   //! @sa AIS_InteractiveContext::HighlightStyle()
   const Handle(Prs3d_Drawer)& HilightAttributes() const { return myHilightDrawer; }
 
   //! Initializes the hilight drawing tool theDrawer.
   virtual void SetHilightAttributes(const Handle(Prs3d_Drawer)& theDrawer) { myHilightDrawer = theDrawer; }
 
   //! Returns the hilight attributes settings.
   //! When not NULL, overrides both Prs3d_TypeOfHighlight_LocalDynamic and Prs3d_TypeOfHighlight_Dynamic defined within AIS_InteractiveContext::HighlightStyle().
   //! @sa AIS_InteractiveContext::HighlightStyle()
   const Handle(Prs3d_Drawer)& DynamicHilightAttributes() const { return myDynHilightDrawer; }
 
   //! Initializes the dynamic hilight drawing tool.
   virtual void SetDynamicHilightAttributes (const Handle(Prs3d_Drawer)& theDrawer) { myDynHilightDrawer = theDrawer; }
 
   //! Clears settings provided by the hilight drawing tool theDrawer.
   virtual void UnsetHilightAttributes() { myHilightDrawer.Nullify(); }
 
   //! Synchronize presentation aspects after their modification.
   //!
   //! This method should be called after modifying primitive aspect properties (material, texture, shader)
   //! so that modifications will take effect on already computed presentation groups (thus avoiding re-displaying the object).
   Standard_EXPORT void SynchronizeAspects();
 
 public: //! @name object transformation
 
   //! Returns Transformation Persistence defining a special Local Coordinate system where this presentable object is located or NULL handle if not defined.
   //! Position of the object having Transformation Persistence is mutable and depends on camera position.
   //! The same applies to a bounding box of the object.
   //! @sa Graphic3d_TransformPers class description
   const Handle(Graphic3d_TransformPers)& TransformPersistence() const { return myTransformPersistence; }
 
   //! Sets up Transform Persistence defining a special Local Coordinate system where this object should be located.
   //! Note that management of Transform Persistence object is more expensive than of the normal one,
   //! because it requires its position being recomputed basing on camera position within each draw call / traverse.
   //! @sa Graphic3d_TransformPers class description
   Standard_EXPORT virtual void SetTransformPersistence (const Handle(Graphic3d_TransformPers)& theTrsfPers);
   
   //! Return the local transformation.
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   const Handle(TopLoc_Datum3D)& LocalTransformationGeom() const { return myLocalTransformation; }
 
   //! Sets local transformation to theTransformation.
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   void SetLocalTransformation (const gp_Trsf& theTrsf) { setLocalTransformation (new TopLoc_Datum3D (theTrsf)); }
 
   //! Sets local transformation to theTransformation.
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   void SetLocalTransformation (const Handle(TopLoc_Datum3D)& theTrsf) { setLocalTransformation (theTrsf); }
 
   //! Returns true if object has a transformation that is different from the identity.
   Standard_Boolean HasTransformation() const { return !myTransformation.IsNull() && myTransformation->Form() != gp_Identity; }
 
   //! Return the transformation taking into account transformation of parent object(s).
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   const Handle(TopLoc_Datum3D)& TransformationGeom() const { return myTransformation; }
 
   //! Return the local transformation.
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   const gp_Trsf& LocalTransformation() const { return !myLocalTransformation.IsNull()
                                                      ? myLocalTransformation->Trsf()
                                                      : getIdentityTrsf(); }
 
   //! Return the transformation taking into account transformation of parent object(s).
   //! Note that the local transformation of the object having Transformation Persistence
   //! is applied within Local Coordinate system defined by this Persistence.
   const gp_Trsf& Transformation() const { return !myTransformation.IsNull()
                                                 ? myTransformation->Trsf()
                                                 : getIdentityTrsf(); }
 
   //! Return inversed transformation.
   const gp_GTrsf& InversedTransformation() const { return myInvTransformation; }
 
   //! Return combined parent transformation.
   const Handle(TopLoc_Datum3D)& CombinedParentTransformation() const { return myCombinedParentTransform; }
 
   //! resets local transformation to identity.
   Standard_EXPORT virtual void ResetTransformation();
 
   //! Updates final transformation (parent + local) of presentable object and its presentations.
   Standard_EXPORT virtual void UpdateTransformation();
 
 public: //! @name clipping planes
   
   //! Get clip planes.
   //! @return set of previously added clip planes for all display mode presentations.
   const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const { return myClipPlanes; }
 
   //! Set clip planes for graphical clipping for all display mode presentations.
   //! The composition of clip planes truncates the rendering space to convex volume.
   //! Please be aware that number of supported clip plane is limited.
   //! The planes which exceed the limit are ignored.
   //! Besides of this, some planes can be already set in view where the object is shown:
   //! the number of these planes should be subtracted from limit to predict the maximum
   //! possible number of object clipping planes.
   Standard_EXPORT virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes);
 
   //! Adds clip plane for graphical clipping for all display mode
   //! presentations. The composition of clip planes truncates the rendering
   //! space to convex volume. Please be aware that number of supported
   //! clip plane is limited. The planes which exceed the limit are ignored.
   //! Besides of this, some planes can be already set in view where the object
   //! is shown: the number of these planes should be subtracted from limit
   //! to predict the maximum possible number of object clipping planes.
   //! @param thePlane [in] the clip plane to be appended to map of clip planes.
   Standard_EXPORT virtual void AddClipPlane (const Handle(Graphic3d_ClipPlane)& thePlane);
 
   //! Removes previously added clip plane.
   //! @param thePlane [in] the clip plane to be removed from map of clip planes.
   Standard_EXPORT virtual void RemoveClipPlane (const Handle(Graphic3d_ClipPlane)& thePlane);
 
 public: //! @name parent/children properties
 
   //! Returns parent of current object in scene hierarchy.
   PrsMgr_PresentableObject* Parent() const { return myParent; }
 
   //! Returns children of the current object.
   const PrsMgr_ListOfPresentableObjects& Children() const { return myChildren; }
 
   //! Makes theObject child of current object in scene hierarchy.
   Standard_EXPORT virtual void AddChild (const Handle(PrsMgr_PresentableObject)& theObject);
 
   //! Makes theObject child of current object in scene hierarchy with keeping the current global transformation
   //! So the object keeps the same position/orientation in the global CS.
   Standard_EXPORT void AddChildWithCurrentTransformation(const Handle(PrsMgr_PresentableObject)& theObject);
 
   //! Removes theObject from children of current object in scene hierarchy.
   Standard_EXPORT virtual void RemoveChild (const Handle(PrsMgr_PresentableObject)& theObject);
 
   //! Removes theObject from children of current object in scene hierarchy with keeping the current global transformation.
   //! So the object keeps the same position/orientation in the global CS.
   Standard_EXPORT void RemoveChildWithRestoreTransformation(const Handle(PrsMgr_PresentableObject)& theObject);
 
   //! Returns true if object should have own presentations.
   Standard_Boolean HasOwnPresentations() const { return myHasOwnPresentations; }
 
   //! Returns bounding box of object correspondingly to its current display mode.
   //! This method requires presentation to be already computed, since it relies on bounding box of presentation structures,
   //! which are supposed to be same/close amongst different display modes of this object.
   Standard_EXPORT virtual void BoundingBox (Bnd_Box& theBndBox);
 
 protected: //! @name interface methods
 
   //! Protected empty constructor.
   Standard_EXPORT PrsMgr_PresentableObject(const PrsMgr_TypeOfPresentation3d aTypeOfPresentation3d = PrsMgr_TOP_AllView);
 
   //! Destructor.
   Standard_EXPORT virtual ~PrsMgr_PresentableObject();
 
   //! Fills the given 3D view presentation for specified display mode using Compute() method.
   //! In addition, configures other properties of presentation (transformation, clipping planes).
   //! @param thePrsMgr presentation manager where presentation has been created
   //! @param thePrs    presentation to fill
   //! @param theMode   display mode to compute; can be any number accepted by AcceptDisplayMode() method
   Standard_EXPORT virtual void Fill (const Handle(PrsMgr_PresentationManager)& thePrsMgr,
                                      const Handle(PrsMgr_Presentation)& thePrs,
                                      const Standard_Integer theMode);
 
   //! Calculates the 3D view presentation for specified display mode.
   //! This is a key interface for implementing Presentable Object interface.
   //! @param thePrsMgr presentation manager where presentation has been created
   //! @param thePrs    presentation to fill
   //! @param theMode   display mode to compute; can be any number accepted by AcceptDisplayMode() method
   //! @sa AcceptDisplayMode()
   Standard_EXPORT virtual void Compute (const Handle(PrsMgr_PresentationManager)& thePrsMgr,
                                         const Handle(Prs3d_Presentation)& thePrs,
                                         const Standard_Integer theMode) = 0;
 
   //! Calculates hidden line removal presentation for specific camera position.
   //! Each of the views in the viewer and every modification such as rotation, for example, entails recalculation.
   //! Default implementation throws Standard_NotImplemented exception
   //! Warning! The transformation must be applied to the object before computation.
   //! @param theProjector [in] view orientation
   //! @param theTrsf [in] additional transformation, or NULL if undefined
   //! @param thePrs  [in] presentation to fill
   Standard_EXPORT virtual void computeHLR (const Handle(Graphic3d_Camera)& theProjector,
                                            const Handle(TopLoc_Datum3D)& theTrsf,
                                            const Handle(Prs3d_Presentation)& thePrs);
 
   //! Recomputes invalidated presentations of the object.
   //! @param theToIncludeHidden if TRUE, then even hidden invalidated presentations will be updated
   //! @return TRUE if some presentations were recomputed
   Standard_EXPORT Standard_Boolean UpdatePresentations (Standard_Boolean theToIncludeHidden = Standard_False);
 
   //! General virtual method for internal update of presentation state
   //! when some modifications on list of clip planes occurs. Base
   //! implementation propagate clip planes to every presentation.
   Standard_EXPORT virtual void UpdateClipping();
 
   //! Sets myCombinedParentTransform to theTransformation. Thus object receives transformation
   //! from parent node and able to derive its own.
   Standard_EXPORT virtual void SetCombinedParentTransform (const Handle(TopLoc_Datum3D)& theTrsf);
 
   //! Sets local transformation to theTransformation.
   Standard_EXPORT virtual void setLocalTransformation (const Handle(TopLoc_Datum3D)& theTransformation);
 
   //! Return the identity transformation.
   Standard_EXPORT static const gp_Trsf& getIdentityTrsf();
 
   //! Recompute computed (HLR) presentations (when view is in computed mode).
   Standard_EXPORT void recomputeComputed() const;
 
   //! Replace aspects of existing (computed) presentation groups,
   //! so that the new aspects can be applied without recomputing presentation.
   //! It is NOT recommended approach, because user has to fill such map and then search for each occurrence in computed groups.
   //! The recommended approach is computing presentation with necessary customized aspects,
   //! and then modify them directly followed by SynchronizeAspects() call.
   Standard_EXPORT void replaceAspects (const Graphic3d_MapOfAspectsToAspects& theMap);
 
 public: //! @name simplified presentation properties API
 
   //! Enables or disables on-triangulation build of isolines according to the flag given.
   void SetIsoOnTriangulation (const Standard_Boolean theIsEnabled) { myDrawer->SetIsoOnTriangulation (theIsEnabled); }
 
   //! Returns the current facing model which is in effect.
   Aspect_TypeOfFacingModel CurrentFacingModel() const { return myCurrentFacingModel; }
 
   //! change the current facing model apply on polygons for SetColor(), SetTransparency(), SetMaterial() methods default facing model is Aspect_TOFM_TWO_SIDE.
   //! This mean that attributes is applying both on the front and back face.
   void SetCurrentFacingModel (const Aspect_TypeOfFacingModel theModel = Aspect_TOFM_BOTH_SIDE) { myCurrentFacingModel = theModel; }
 
   //! Returns true if the Interactive Object has color.
   Standard_Boolean HasColor() const { return hasOwnColor; }
 
   //! Returns the color setting of the Interactive Object.
   virtual void Color (Quantity_Color& theColor) const { theColor = myDrawer->Color(); }
 
   //! Only the interactive object knowns which Drawer attribute is affected by the color, if any
   //! (ex: for a wire,it's the wireaspect field of the drawer, but for a vertex, only the point aspect field is affected by the color).
   //! WARNING : Do not forget to set the corresponding fields here (hasOwnColor and myDrawer->SetColor())
   virtual void SetColor (const Quantity_Color& theColor)
   {
     myDrawer->SetColor (theColor);
     hasOwnColor = Standard_True;
   }
 
   //! Removes color settings. Only the Interactive Object
   //! knows which Drawer attribute is   affected by the color
   //! setting. For a wire, for example, wire aspect is the
   //! attribute affected. For a vertex, however, only point
   //! aspect is affected by the color setting.
   virtual void UnsetColor() { hasOwnColor = Standard_False; }
 
   //! Returns true if the Interactive Object has width.
   Standard_Boolean HasWidth() const { return myOwnWidth != 0.0f; }
 
   //! Returns the width setting of the Interactive Object.
   Standard_Real Width() const { return myOwnWidth; }
 
   //! Allows you to provide the setting aValue for width.
   //! Only the Interactive Object knows which Drawer attribute is affected by the width setting.
   virtual void SetWidth (const Standard_Real theWidth) { myOwnWidth = (Standard_ShortReal )theWidth; }
 
   //! Reset width to default value.
   virtual void UnsetWidth() { myOwnWidth = 0.0f; }
 
   //! Returns true if the Interactive Object has a setting for material.
   Standard_Boolean HasMaterial() const { return hasOwnMaterial; }
 
   //! Returns the current material setting as enumeration value.
   Standard_EXPORT virtual Graphic3d_NameOfMaterial Material() const;
 
   //! Sets the material aMat defining this display attribute
   //! for the interactive object.
   //! Material aspect determines shading aspect, color and
   //! transparency of visible entities.
   Standard_EXPORT virtual void SetMaterial (const Graphic3d_MaterialAspect& aName);
 
   //! Removes the setting for material.
   Standard_EXPORT virtual void UnsetMaterial();
 
   //! Returns true if there is a transparency setting.
   Standard_Boolean IsTransparent() const { return myDrawer->Transparency() > 0.005f; }
 
   //! Returns the transparency setting.
   //! This will be between 0.0 and 1.0.
   //! At 0.0 an object will be totally opaque, and at 1.0, fully transparent.
   virtual Standard_Real Transparency() const { return (myDrawer->Transparency() <= 0.005f ? 0.0 : myDrawer->Transparency()); }
 
   //! Attributes a setting aValue for transparency.
   //! The transparency value should be between 0.0 and 1.0.
   //! At 0.0 an object will be totally opaque, and at 1.0, fully transparent.
   //! Warning At a value of 1.0, there may be nothing visible.
   Standard_EXPORT virtual void SetTransparency (const Standard_Real aValue = 0.6);
 
   //! Removes the transparency setting. The object is opaque by default.
   Standard_EXPORT virtual void UnsetTransparency();
 
   //! Returns Standard_True if <myDrawer> has non-null shading aspect
   Standard_EXPORT virtual Standard_Boolean HasPolygonOffsets() const;
 
   //! Retrieves current polygon offsets settings from <myDrawer>.
   Standard_EXPORT virtual void PolygonOffsets (Standard_Integer& aMode, Standard_ShortReal& aFactor, Standard_ShortReal& aUnits) const;
 
   //! Sets up polygon offsets for this object.
   //! @sa Graphic3d_Aspects::SetPolygonOffsets()
   Standard_EXPORT virtual void SetPolygonOffsets (const Standard_Integer aMode, const Standard_ShortReal aFactor = 1.0, const Standard_ShortReal aUnits = 0.0);
 
   //! Clears settings provided by the drawing tool aDrawer.
   Standard_EXPORT virtual void UnsetAttributes();
 
   //! Dumps the content of me into the stream
   Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;
 
 public: //! @name deprecated methods
 
   //! gives the list of modes which are flagged "to be updated".
   Standard_DEPRECATED("This method is deprecated - UpdatePresentations() should be called instead")
   Standard_EXPORT void ToBeUpdated (TColStd_ListOfInteger& ListOfMode) const;
 
   //! Get value of the flag "propagate visual state"
   //! It means that the display/erase/color visual state is propagated automatically to all children;
   //! by default, the flag is true 
   Standard_Boolean ToPropagateVisualState() const { return myToPropagateVisualState; }
 
   //! Change the value of the flag "propagate visual state"
   void SetPropagateVisualState(const Standard_Boolean theFlag) { myToPropagateVisualState = theFlag; }
 
 protected:
 
   //! Recomputes all presentations of the object.
   Standard_DEPRECATED("This method is deprecated - SetToUpdate() + UpdatePresentations() should be called instead")
   void Update (Standard_Boolean theToIncludeHidden = Standard_False)
   {
     SetToUpdate();
     UpdatePresentations (theToIncludeHidden);
   }
 
   //! Recomputes the presentation in the given mode.
   //! @param theMode presentation (display mode) to recompute
   //! @param theToClearOther when TRUE, other presentations (display modes) will be removed
   Standard_DEPRECATED("This method is deprecated - SetToUpdate() + UpdatePresentations() should be called instead")
   Standard_EXPORT void Update (Standard_Integer theMode, Standard_Boolean theToClearOther);
 
 protected:
 
   PrsMgr_PresentableObject*              myParent;                  //!< pointer to the parent object
   PrsMgr_Presentations                   myPresentations;           //!< list of presentations
   Handle(Graphic3d_ViewAffinity)         myViewAffinity;            //!< view affinity mask
   Handle(Graphic3d_SequenceOfHClipPlane) myClipPlanes;              //!< sequence of object-specific clipping planes
   Handle(Prs3d_Drawer)                   myDrawer;                  //!< main presentation attributes
   Handle(Prs3d_Drawer)                   myHilightDrawer;           //!< (optional) custom presentation attributes for highlighting selected object
   Handle(Prs3d_Drawer)                   myDynHilightDrawer;        //!< (optional) custom presentation attributes for highlighting detected object
   Handle(Graphic3d_TransformPers)        myTransformPersistence;    //!< transformation persistence
   Handle(TopLoc_Datum3D)                 myLocalTransformation;     //!< local transformation relative to parent object
   Handle(TopLoc_Datum3D)                 myTransformation;          //!< absolute transformation of this object (combined parents + local transformations)
   Handle(TopLoc_Datum3D)                 myCombinedParentTransform; //!< transformation of parent object (combined for all parents)
   PrsMgr_ListOfPresentableObjects        myChildren;                //!< list of children
   gp_GTrsf                               myInvTransformation;       //!< inversion of absolute transformation (combined parents + local transformations)
   PrsMgr_TypeOfPresentation3d            myTypeOfPresentation3d;    //!< presentation type
   PrsMgr_DisplayStatus                   myDisplayStatus;           //!< presentation display status
 
   Aspect_TypeOfFacingModel               myCurrentFacingModel;      //!< current facing model
   Standard_ShortReal                     myOwnWidth;                //!< custom width value
   Standard_Boolean                       hasOwnColor;               //!< own color flag
   Standard_Boolean                       hasOwnMaterial;            //!< own material flag
 
   Standard_Boolean                       myInfiniteState;           //!< infinite flag
   Standard_Boolean                       myIsMutable;               //!< mutable flag
   Standard_Boolean                       myHasOwnPresentations;     //!< flag indicating if object should have own presentations
 
   Standard_Boolean                       myToPropagateVisualState;  //!< flag indicating if visual state (display/erase/color) should be propagated to all children
 };
 
 DEFINE_STANDARD_HANDLE(PrsMgr_PresentableObject, Standard_Transient)
 
 #endif // _PrsMgr_PresentableObject_HeaderFile

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