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 // 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 _Prs3d_Drawer_HeaderFile
 #define _Prs3d_Drawer_HeaderFile
 
 #include <Standard.hxx>
 
 #include <Standard_Integer.hxx>
 #include <Aspect_TypeOfDeflection.hxx>
 #include <Graphic3d_GroupAspect.hxx>
 #include <Graphic3d_PresentationAttributes.hxx>
 #include <Graphic3d_ShaderProgram.hxx>
 #include <Standard_Real.hxx>
 #include <Prs3d_VertexDrawMode.hxx>
 #include <Prs3d_DimensionUnits.hxx>
 #include <Prs3d_TypeOfHLR.hxx>
 #include <Standard_Transient.hxx>
 #include <GeomAbs_Shape.hxx>
 
 class Prs3d_IsoAspect;
 class Prs3d_LineAspect;
 class Prs3d_TextAspect;
 class Prs3d_ShadingAspect;
 class Prs3d_PointAspect;
 class Prs3d_PlaneAspect;
 class Prs3d_ArrowAspect;
 class Prs3d_DatumAspect;
 class Prs3d_DimensionAspect;
 class TCollection_AsciiString;
 
 //! A graphic attribute manager which governs how
 //! objects such as color, width, line thickness and deflection are displayed.
 //! A drawer includes an instance of the Aspect classes with particular default values.
 class Prs3d_Drawer : public Graphic3d_PresentationAttributes
 {
   DEFINE_STANDARD_RTTIEXT(Prs3d_Drawer, Graphic3d_PresentationAttributes)
 public:
   //! Default constructor.
   Standard_EXPORT Prs3d_Drawer();
 
   //! Setup all own aspects with default values.
   Standard_EXPORT void SetupOwnDefaults();
 
   //! Sets the type of chordal deflection.
   //! This indicates whether the deflection value is absolute or relative to the size of the object.
   Standard_EXPORT void SetTypeOfDeflection(const Aspect_TypeOfDeflection theTypeOfDeflection);
 
   //! Returns the type of chordal deflection.
   //! This indicates whether the deflection value is absolute or relative to the size of the object.
   Aspect_TypeOfDeflection TypeOfDeflection() const
   {
     return myHasOwnTypeOfDeflection || myLink.IsNull() ? myTypeOfDeflection
                                                        : myLink->TypeOfDeflection();
   }
 
   //! Returns true if the drawer has a type of deflection setting active.
   bool HasOwnTypeOfDeflection() const { return myHasOwnTypeOfDeflection; }
 
   //! Resets HasOwnTypeOfDeflection() flag, e.g. undoes SetTypeOfDeflection().
   void UnsetOwnTypeOfDeflection()
   {
     myHasOwnTypeOfDeflection = false;
     myTypeOfDeflection       = Aspect_TOD_RELATIVE;
   }
 
   //! Defines the maximal chordial deviation when drawing any curve.
   //! Even if the type of deviation is set to TOD_Relative, this value is used by:
   //!   Prs3d_DeflectionCurve
   //!   Prs3d_WFDeflectionSurface
   //!   Prs3d_WFDeflectionRestrictedFace
   void SetMaximalChordialDeviation(const double theChordialDeviation)
   {
     myChordialDeviation = theChordialDeviation;
   }
 
   //! Returns the maximal chordal deviation. The default value is 0.0001.
   //! Drawings of curves or patches are made with respect to an absolute maximal chordal deviation.
   double MaximalChordialDeviation() const
   {
     return myChordialDeviation > 0.0
              ? myChordialDeviation
              : (!myLink.IsNull() ? myLink->MaximalChordialDeviation() : 0.0001);
   }
 
   //! Returns true if the drawer has a maximal chordial deviation setting active.
   bool HasOwnMaximalChordialDeviation() const { return myChordialDeviation > 0.0; }
 
   //! Resets HasOwnMaximalChordialDeviation() flag, e.g. undoes SetMaximalChordialDeviation().
   void UnsetOwnMaximalChordialDeviation() { myChordialDeviation = -1.0; }
 
   //! Sets the type of HLR algorithm used by drawer's interactive objects
   Standard_EXPORT void SetTypeOfHLR(const Prs3d_TypeOfHLR theTypeOfHLR);
 
   //! Returns the type of HLR algorithm currently in use.
   Standard_EXPORT Prs3d_TypeOfHLR TypeOfHLR() const;
 
   //! Returns true if the type of HLR is not equal to Prs3d_TOH_NotSet.
   bool HasOwnTypeOfHLR() const { return (myTypeOfHLR != Prs3d_TOH_NotSet); }
 
   //! Defines the maximum value allowed for the first and last
   //! parameters of an infinite curve.
   void SetMaximalParameterValue(const double theValue) { myMaximalParameterValue = theValue; }
 
   //! Sets the maximum value allowed for the first and last parameters of an infinite curve.
   //! By default, this value is 500000.
   double MaximalParameterValue() const
   {
     return myMaximalParameterValue > 0.0
              ? myMaximalParameterValue
              : (!myLink.IsNull() ? myLink->MaximalParameterValue() : 500000.0);
   }
 
   //! Returns true if the drawer has a maximum value allowed for the first and last
   //! parameters of an infinite curve setting active.
   bool HasOwnMaximalParameterValue() const { return myMaximalParameterValue > 0.0; }
 
   //! Resets HasOwnMaximalParameterValue() flag, e.g. undoes SetMaximalParameterValue().
   void UnsetOwnMaximalParameterValue() { myMaximalParameterValue = -1.0; }
 
   //! Sets IsoOnPlane on or off by setting the parameter theIsEnabled to true or false.
   Standard_EXPORT void SetIsoOnPlane(const bool theIsEnabled);
 
   //! Returns True if the drawing of isos on planes is enabled.
   bool IsoOnPlane() const
   {
     return myHasOwnIsoOnPlane || myLink.IsNull() ? myIsoOnPlane : myLink->IsoOnPlane();
   }
 
   //! Returns true if the drawer has IsoOnPlane setting active.
   bool HasOwnIsoOnPlane() const { return myHasOwnIsoOnPlane; }
 
   //! Resets HasOwnIsoOnPlane() flag, e.g. undoes SetIsoOnPlane().
   void UnsetOwnIsoOnPlane()
   {
     myHasOwnIsoOnPlane = false;
     myIsoOnPlane       = false;
   }
 
   //! Returns True if the drawing of isos on triangulation is enabled.
   bool IsoOnTriangulation() const
   {
     return myHasOwnIsoOnTriangulation || myLink.IsNull() ? myIsoOnTriangulation
                                                          : myLink->IsoOnTriangulation();
   }
 
   //! Returns true if the drawer has IsoOnTriangulation setting active.
   bool HasOwnIsoOnTriangulation() const { return myHasOwnIsoOnTriangulation; }
 
   //! Resets HasOwnIsoOnTriangulation() flag, e.g. undoes SetIsoOnTriangulation().
   void UnsetOwnIsoOnTriangulation()
   {
     myHasOwnIsoOnTriangulation = false;
     myIsoOnTriangulation       = false;
   }
 
   //! Enables or disables isolines on triangulation by setting the parameter theIsEnabled to true or
   //! false.
   Standard_EXPORT void SetIsoOnTriangulation(const bool theToEnable);
 
   //! Sets the discretisation parameter theValue.
   void SetDiscretisation(const int theValue) { myNbPoints = theValue; }
 
   //! Returns the discretisation setting.
   int Discretisation() const
   {
     return myNbPoints != -1 ? myNbPoints : (!myLink.IsNull() ? myLink->Discretisation() : 30);
   }
 
   //! Returns true if the drawer has discretisation setting active.
   bool HasOwnDiscretisation() const { return myNbPoints != -1; }
 
   //! Resets HasOwnDiscretisation() flag, e.g. undoes SetDiscretisation().
   void UnsetOwnDiscretisation() { myNbPoints = -1; }
 
   //! Sets the deviation coefficient theCoefficient.
   //! Also sets the hasOwnDeviationCoefficient flag to true and
   //! myPreviousDeviationCoefficient
   Standard_EXPORT void SetDeviationCoefficient(const double theCoefficient);
 
   //! Returns the deviation coefficient.
   //! Drawings of curves or patches are made with respect
   //! to a maximal chordal deviation. A Deviation coefficient
   //! is used in the shading display mode. The shape is
   //! seen decomposed into triangles. These are used to
   //! calculate reflection of light from the surface of the
   //! object. The triangles are formed from chords of the
   //! curves in the shape. The deviation coefficient gives
   //! the highest value of the angle with which a chord can
   //! deviate from a tangent to a curve. If this limit is
   //! reached, a new triangle is begun.
   //! This deviation is absolute and is set through the
   //! method: SetMaximalChordialDeviation. The default value is 0.001.
   //! In drawing shapes, however, you are allowed to ask
   //! for a relative deviation. This deviation will be:
   //! SizeOfObject * DeviationCoefficient.
   double DeviationCoefficient() const
   {
     return myDeviationCoefficient > 0.0
              ? myDeviationCoefficient
              : (!myLink.IsNull() ? myLink->DeviationCoefficient() : 0.001);
   }
 
   //! Resets HasOwnDeviationCoefficient() flag, e.g. undoes previous SetDeviationCoefficient().
   void SetDeviationCoefficient() { myDeviationCoefficient = -1.0; }
 
   //! Returns true if there is a local setting for deviation
   //! coefficient in this framework for a specific interactive object.
   bool HasOwnDeviationCoefficient() const { return myDeviationCoefficient > 0.0; }
 
   //! Saves the previous value used for the chordal
   //! deviation coefficient.
   double PreviousDeviationCoefficient() const
   {
     return HasOwnDeviationCoefficient() ? myPreviousDeviationCoefficient : 0.0;
   }
 
   //! Updates the previous value used for the chordal deviation coefficient to the current state.
   void UpdatePreviousDeviationCoefficient()
   {
     if (HasOwnDeviationCoefficient())
     {
       myPreviousDeviationCoefficient = DeviationCoefficient();
     }
   }
 
   //! Sets the deviation angle theAngle.
   //! Also sets the hasOwnDeviationAngle flag to true, and myPreviousDeviationAngle.
   Standard_EXPORT void SetDeviationAngle(const double theAngle);
 
   //! Returns the value for deviation angle in radians, 20 * M_PI / 180 by default.
   double DeviationAngle() const
   {
     return myDeviationAngle > 0.0
              ? myDeviationAngle
              : (!myLink.IsNull() ? myLink->DeviationAngle() : 20.0 * M_PI / 180.0);
   }
 
   //! Resets HasOwnDeviationAngle() flag, e.g. undoes previous SetDeviationAngle().
   void SetDeviationAngle() { myDeviationAngle = -1.0; }
 
   //! Returns true if there is a local setting for deviation
   //! angle in this framework for a specific interactive object.
   bool HasOwnDeviationAngle() const { return myDeviationAngle > 0.0; }
 
   //! Returns the previous deviation angle
   double PreviousDeviationAngle() const
   {
     return HasOwnDeviationAngle() ? myPreviousDeviationAngle : 0.0;
   }
 
   //! Updates the previous deviation angle to the current value
   void UpdatePreviousDeviationAngle()
   {
     if (HasOwnDeviationAngle())
     {
       myPreviousDeviationAngle = DeviationAngle();
     }
   }
 
   //! Sets IsAutoTriangulated on or off by setting the parameter theIsEnabled to true or false.
   //! If this flag is True automatic re-triangulation with deflection-check logic will be applied.
   //! Else this feature will be disable and triangulation is expected to be computed by application
   //! itself and no shading presentation at all if unavailable.
   Standard_EXPORT void SetAutoTriangulation(const bool theIsEnabled);
 
   //! Returns True if automatic triangulation is enabled.
   bool IsAutoTriangulation() const
   {
     return myHasOwnIsAutoTriangulated || myLink.IsNull() ? myIsAutoTriangulated
                                                          : myLink->IsAutoTriangulation();
   }
 
   //! Returns true if the drawer has IsoOnPlane setting active.
   bool HasOwnIsAutoTriangulation() const { return myHasOwnIsAutoTriangulated; }
 
   //! Resets HasOwnIsAutoTriangulation() flag, e.g. undoes SetAutoTriangulation().
   void UnsetOwnIsAutoTriangulation()
   {
     myHasOwnIsAutoTriangulated = false;
     myIsAutoTriangulated       = true;
   }
 
   //! Defines own attributes for drawing an U isoparametric curve of a face,
   //! settings from linked Drawer or NULL if neither was set.
   //!
   //! These attributes are used by the following algorithms:
   //!   Prs3d_WFDeflectionSurface
   //!   Prs3d_WFDeflectionRestrictedFace
   Standard_EXPORT const occ::handle<Prs3d_IsoAspect>& UIsoAspect() const;
 
   void SetUIsoAspect(const occ::handle<Prs3d_IsoAspect>& theAspect) { myUIsoAspect = theAspect; }
 
   //! Returns true if the drawer has its own attribute for
   //! UIso aspect that overrides the one in the link.
   bool HasOwnUIsoAspect() const { return !myUIsoAspect.IsNull(); }
 
   //! Defines own attributes for drawing an V isoparametric curve of a face,
   //! settings from linked Drawer or NULL if neither was set.
   //!
   //! These attributes are used by the following algorithms:
   //!   Prs3d_WFDeflectionSurface
   //!   Prs3d_WFDeflectionRestrictedFace
   Standard_EXPORT const occ::handle<Prs3d_IsoAspect>& VIsoAspect() const;
 
   //! Sets the appearance of V isoparameters - theAspect.
   void SetVIsoAspect(const occ::handle<Prs3d_IsoAspect>& theAspect) { myVIsoAspect = theAspect; }
 
   //! Returns true if the drawer has its own attribute for
   //! VIso aspect that overrides the one in the link.
   bool HasOwnVIsoAspect() const { return !myVIsoAspect.IsNull(); }
 
   //! Returns own wire aspect settings, settings from linked Drawer or NULL if neither was set.
   //! These attributes are used by the algorithm Prs3d_WFShape.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& WireAspect() const;
 
   //! Sets the parameter theAspect for display of wires.
   void SetWireAspect(const occ::handle<Prs3d_LineAspect>& theAspect) { myWireAspect = theAspect; }
 
   //! Returns true if the drawer has its own attribute for
   //! wire aspect that overrides the one in the link.
   bool HasOwnWireAspect() const { return !myWireAspect.IsNull(); }
 
   //! Sets WireDraw on or off by setting the parameter theIsEnabled to true or false.
   Standard_EXPORT void SetWireDraw(const bool theIsEnabled);
 
   //! Returns True if the drawing of the wire is enabled.
   bool WireDraw() const
   {
     return myHasOwnWireDraw || myLink.IsNull() ? myWireDraw : myLink->WireDraw();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! "draw wires" flag that overrides the one in the link.
   bool HasOwnWireDraw() const { return myHasOwnWireDraw; }
 
   //! Resets HasOwnWireDraw() flag, e.g. undoes SetWireDraw().
   void UnsetOwnWireDraw()
   {
     myHasOwnWireDraw = false;
     myWireDraw       = true;
   }
 
   //! Returns own point aspect setting, settings from linked Drawer or NULL if neither was set.
   //! These attributes are used by the algorithms Prs3d_Point.
   Standard_EXPORT const occ::handle<Prs3d_PointAspect>& PointAspect() const;
 
   //! Sets the parameter theAspect for display attributes of points
   void SetPointAspect(const occ::handle<Prs3d_PointAspect>& theAspect)
   {
     myPointAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! point aspect that overrides the one in the link.
   bool HasOwnPointAspect() const { return !myPointAspect.IsNull(); }
 
   //! Sets own point aspect, which is a yellow Aspect_TOM_PLUS marker by default.
   //! Returns FALSE if the drawer already has its own attribute for point aspect.
   Standard_EXPORT bool SetupOwnPointAspect(
     const occ::handle<Prs3d_Drawer>& theDefaults = occ::handle<Prs3d_Drawer>());
 
   //! Returns own settings for line aspects, settings from linked Drawer or NULL if neither was set.
   //! These attributes are used by the following algorithms:
   //!   Prs3d_Curve
   //!   Prs3d_Line
   //!   Prs3d_HLRShape
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& LineAspect() const;
 
   //! Sets the parameter theAspect for display attributes of lines.
   void SetLineAspect(const occ::handle<Prs3d_LineAspect>& theAspect) { myLineAspect = theAspect; }
 
   //! Returns true if the drawer has its own attribute for
   //! line aspect that overrides the one in the link.
   bool HasOwnLineAspect() const { return !myLineAspect.IsNull(); }
 
   //! Sets own line aspects, which are
   //! single U and single V gray75 solid isolines (::UIsoAspect(), ::VIsoAspect()),
   //! red wire (::WireAspect()), yellow line (::LineAspect()),
   //! yellow seen line (::SeenLineAspect()), dashed yellow hidden line (::HiddenLineAspect()),
   //! green free boundary (::FreeBoundaryAspect()), yellow unfree boundary
   //! (::UnFreeBoundaryAspect()). Returns FALSE if own line aspect are already set.
   Standard_EXPORT bool SetOwnLineAspects(
     const occ::handle<Prs3d_Drawer>& theDefaults = occ::handle<Prs3d_Drawer>());
 
   //! Sets own line aspects for datums.
   //! Returns FALSE if own line for datums are already set.
   Standard_EXPORT bool SetOwnDatumAspects(
     const occ::handle<Prs3d_Drawer>& theDefaults = occ::handle<Prs3d_Drawer>());
 
   //! Returns own settings for text aspect, settings from linked Drawer or NULL if neither was set.
   Standard_EXPORT const occ::handle<Prs3d_TextAspect>& TextAspect() const;
 
   //! Sets the parameter theAspect for display attributes of text.
   void SetTextAspect(const occ::handle<Prs3d_TextAspect>& theAspect) { myTextAspect = theAspect; }
 
   //! Returns true if the drawer has its own attribute for
   //! text aspect that overrides the one in the link.
   bool HasOwnTextAspect() const { return !myTextAspect.IsNull(); }
 
   //! Returns own settings for shading aspects, settings from linked Drawer or NULL if neither was
   //! set.
   Standard_EXPORT const occ::handle<Prs3d_ShadingAspect>& ShadingAspect() const;
 
   //! Sets the parameter theAspect for display attributes of shading.
   void SetShadingAspect(const occ::handle<Prs3d_ShadingAspect>& theAspect)
   {
     myShadingAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! shading aspect that overrides the one in the link.
   bool HasOwnShadingAspect() const { return !myShadingAspect.IsNull(); }
 
   //! Sets own shading aspect, which is Graphic3d_NameOfMaterial_Brass material by default.
   //! Returns FALSE if the drawer already has its own attribute for shading aspect.
   Standard_EXPORT bool SetupOwnShadingAspect(
     const occ::handle<Prs3d_Drawer>& theDefaults = occ::handle<Prs3d_Drawer>());
 
   //! Returns own settings for seen line aspects, settings of linked Drawer or NULL if neither was
   //! set.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& SeenLineAspect() const;
 
   //! Sets the parameter theAspect for the display of seen lines in hidden line removal mode.
   void SetSeenLineAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     mySeenLineAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! seen line aspect that overrides the one in the link.
   bool HasOwnSeenLineAspect() const { return !mySeenLineAspect.IsNull(); }
 
   //! Returns own settings for the appearance of planes, settings from linked Drawer or NULL if
   //! neither was set.
   Standard_EXPORT const occ::handle<Prs3d_PlaneAspect>& PlaneAspect() const;
 
   //! Sets the parameter theAspect for the display of planes.
   void SetPlaneAspect(const occ::handle<Prs3d_PlaneAspect>& theAspect)
   {
     myPlaneAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! plane aspect that overrides the one in the link.
   bool HasOwnPlaneAspect() const { return !myPlaneAspect.IsNull(); }
 
   //! Returns own attributes for display of arrows, settings from linked Drawer or NULL if neither
   //! was set.
   Standard_EXPORT const occ::handle<Prs3d_ArrowAspect>& ArrowAspect() const;
 
   //! Sets the parameter theAspect for display attributes of arrows.
   void SetArrowAspect(const occ::handle<Prs3d_ArrowAspect>& theAspect)
   {
     myArrowAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! arrow aspect that overrides the one in the link.
   bool HasOwnArrowAspect() const { return !myArrowAspect.IsNull(); }
 
   //! Enables the drawing of an arrow at the end of each line.
   //! By default the arrows are not drawn.
   Standard_EXPORT void SetLineArrowDraw(const bool theIsEnabled);
 
   //! Returns True if drawing an arrow at the end of each edge is enabled
   //! and False otherwise (the default).
   bool LineArrowDraw() const
   {
     return myHasOwnLineArrowDraw || myLink.IsNull() ? myLineArrowDraw : myLink->LineArrowDraw();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! "draw arrow" flag that overrides the one in the link.
   bool HasOwnLineArrowDraw() const { return myHasOwnLineArrowDraw; }
 
   //! Reset HasOwnLineArrowDraw() flag, e.g. undoes SetLineArrowDraw().
   void UnsetOwnLineArrowDraw()
   {
     myHasOwnLineArrowDraw = false;
     myLineArrowDraw       = false;
   }
 
   //! Returns own settings for hidden line aspects, settings from linked Drawer or NULL if neither
   //! was set.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& HiddenLineAspect() const;
 
   //! Sets the parameter theAspect for the display of hidden lines in hidden line removal mode.
   void SetHiddenLineAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     myHiddenLineAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! hidden lines aspect that overrides the one in the link.
   bool HasOwnHiddenLineAspect() const { return !myHiddenLineAspect.IsNull(); }
 
   //! Returns true if the hidden lines are to be drawn.
   //! By default the hidden lines are not drawn.
   bool DrawHiddenLine() const
   {
     return myHasOwnDrawHiddenLine || myLink.IsNull() ? myDrawHiddenLine : myLink->DrawHiddenLine();
   }
 
   //! Enables the DrawHiddenLine function.
   Standard_EXPORT void EnableDrawHiddenLine();
 
   //! Disables the DrawHiddenLine function.
   Standard_EXPORT void DisableDrawHiddenLine();
 
   //! Returns true if the drawer has its own attribute for
   //! "draw hidden lines" flag that overrides the one in the link.
   bool HasOwnDrawHiddenLine() const { return myHasOwnDrawHiddenLine; }
 
   //! Resets HasOwnDrawHiddenLine() flag, e.g. unsets
   //! EnableDrawHiddenLine()/DisableDrawHiddenLine().
   void UnsetOwnDrawHiddenLine()
   {
     myHasOwnDrawHiddenLine = false;
     myDrawHiddenLine       = false;
   }
 
   //! Returns own settings for the appearance of vectors, settings from linked Drawer or NULL if
   //! neither was set.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& VectorAspect() const;
 
   //! Sets the modality theAspect for the display of vectors.
   void SetVectorAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     myVectorAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! vector aspect that overrides the one in the link.
   bool HasOwnVectorAspect() const { return !myVectorAspect.IsNull(); }
 
   //! Sets the mode of visualization of vertices of a TopoDS_Shape instance.
   //! By default, only stand-alone vertices (not belonging topologically to an edge) are drawn,
   //! that corresponds to Prs3d_VDM_Standalone mode.
   //! Switching to Prs3d_VDM_Standalone mode makes all shape's vertices visible.
   //! To inherit this parameter from the global drawer instance ("the link") when it is present,
   //! Prs3d_VDM_Inherited value should be used.
   Standard_EXPORT void SetVertexDrawMode(const Prs3d_VertexDrawMode theMode);
 
   //! Returns the current mode of visualization of vertices of a TopoDS_Shape instance.
   Standard_EXPORT Prs3d_VertexDrawMode VertexDrawMode() const;
 
   //! Returns true if the vertex draw mode is not equal to <b>Prs3d_VDM_Inherited</b>.
   //! This means that individual vertex draw mode value (i.e. not inherited from the global
   //! drawer) is used for a specific interactive object.
   bool HasOwnVertexDrawMode() const { return (myVertexDrawMode != Prs3d_VDM_Inherited); }
 
   //! Returns own settings for the appearance of datums, settings from linked Drawer or NULL if
   //! neither was set.
   Standard_EXPORT const occ::handle<Prs3d_DatumAspect>& DatumAspect() const;
 
   //! Sets the modality theAspect for the display of datums.
   void SetDatumAspect(const occ::handle<Prs3d_DatumAspect>& theAspect)
   {
     myDatumAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! datum aspect that overrides the one in the link.
   bool HasOwnDatumAspect() const { return !myDatumAspect.IsNull(); }
 
   //! Returns own LineAspect for section wire, settings from linked Drawer or NULL if neither was
   //! set. These attributes are used by the algorithm Prs3d_WFShape.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& SectionAspect() const;
 
   //! Sets the parameter theAspect for display attributes of sections.
   void SetSectionAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     mySectionAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! section aspect that overrides the one in the link.
   bool HasOwnSectionAspect() const { return !mySectionAspect.IsNull(); }
 
   //! Sets the parameter theAspect for the display of free boundaries.
   //! The method sets aspect owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   void SetFreeBoundaryAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     myFreeBoundaryAspect = theAspect;
   }
 
   //! Returns own settings for presentation of free boundaries, settings from linked Drawer or NULL
   //! if neither was set. In other words, this settings affect boundaries which are not shared.
   //! These attributes are used by the algorithm Prs3d_WFShape
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& FreeBoundaryAspect() const;
 
   //! Returns true if the drawer has its own attribute for
   //! free boundaries aspect that overrides the one in the link.
   bool HasOwnFreeBoundaryAspect() const { return !myFreeBoundaryAspect.IsNull(); }
 
   //! Enables or disables drawing of free boundaries for shading presentations.
   //! The method sets drawing flag owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   //! theIsEnabled is a boolean flag indicating whether the free boundaries should be
   //! drawn or not.
   Standard_EXPORT void SetFreeBoundaryDraw(const bool theIsEnabled);
 
   //! Returns True if the drawing of the free boundaries is enabled
   //! True is the default setting.
   bool FreeBoundaryDraw() const
   {
     return myHasOwnFreeBoundaryDraw || myLink.IsNull() ? myFreeBoundaryDraw
                                                        : myLink->FreeBoundaryDraw();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! "draw free boundaries" flag that overrides the one in the link.
   bool HasOwnFreeBoundaryDraw() const { return myHasOwnFreeBoundaryDraw; }
 
   //! Resets HasOwnFreeBoundaryDraw() flag, e.g. undoes SetFreeBoundaryDraw().
   void UnsetOwnFreeBoundaryDraw()
   {
     myHasOwnFreeBoundaryDraw = false;
     myFreeBoundaryDraw       = true;
   }
 
   //! Sets the parameter theAspect for the display of shared boundaries.
   //! The method sets aspect owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   void SetUnFreeBoundaryAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     myUnFreeBoundaryAspect = theAspect;
   }
 
   //! Returns own settings for shared boundary line aspects, settings from linked Drawer or NULL if
   //! neither was set. These attributes are used by the algorithm Prs3d_WFShape
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& UnFreeBoundaryAspect() const;
 
   //! Returns true if the drawer has its own attribute for
   //! unfree boundaries aspect that overrides the one in the link.
   bool HasOwnUnFreeBoundaryAspect() const { return !myUnFreeBoundaryAspect.IsNull(); }
 
   //! Enables or disables drawing of shared boundaries for shading presentations.
   //! The method sets drawing flag owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   //! theIsEnabled is a boolean flag indicating whether the shared boundaries should be drawn or
   //! not.
   Standard_EXPORT void SetUnFreeBoundaryDraw(const bool theIsEnabled);
 
   //! Returns True if the drawing of the shared boundaries is enabled.
   //! True is the default setting.
   bool UnFreeBoundaryDraw() const
   {
     return myHasOwnUnFreeBoundaryDraw || myLink.IsNull() ? myUnFreeBoundaryDraw
                                                          : myLink->UnFreeBoundaryDraw();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! "draw shared boundaries" flag that overrides the one in the link.
   bool HasOwnUnFreeBoundaryDraw() const { return myHasOwnUnFreeBoundaryDraw; }
 
   //! Resets HasOwnUnFreeBoundaryDraw() flag, e.g. undoes SetUnFreeBoundaryDraw().
   void UnsetOwnUnFreeBoundaryDraw()
   {
     myHasOwnUnFreeBoundaryDraw = false;
     myUnFreeBoundaryDraw       = true;
   }
 
   //! Sets line aspect for face boundaries.
   //! The method sets line aspect owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   //! theAspect is the line aspect that determines the look of the face boundaries.
   void SetFaceBoundaryAspect(const occ::handle<Prs3d_LineAspect>& theAspect)
   {
     myFaceBoundaryAspect = theAspect;
   }
 
   //! Returns own line aspect of face boundaries, settings from linked Drawer or NULL if neither was
   //! set.
   Standard_EXPORT const occ::handle<Prs3d_LineAspect>& FaceBoundaryAspect() const;
 
   //! Returns true if the drawer has its own attribute for
   //! face boundaries aspect that overrides the one in the link.
   bool HasOwnFaceBoundaryAspect() const { return !myFaceBoundaryAspect.IsNull(); }
 
   //! Sets own face boundary aspect, which is a black solid line by default.
   //! Returns FALSE if the drawer already has its own attribute for face boundary aspect.
   Standard_EXPORT bool SetupOwnFaceBoundaryAspect(
     const occ::handle<Prs3d_Drawer>& theDefaults = occ::handle<Prs3d_Drawer>());
 
   //! Enables or disables face boundary drawing for shading presentations.
   //! The method sets drawing flag owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   //! theIsEnabled is a boolean flag indicating whether the face boundaries should be drawn or not.
   Standard_EXPORT void SetFaceBoundaryDraw(const bool theIsEnabled);
 
   //! Checks whether the face boundary drawing is enabled or not.
   bool FaceBoundaryDraw() const
   {
     return myHasOwnFaceBoundaryDraw || myLink.IsNull() ? myFaceBoundaryDraw
                                                        : myLink->FaceBoundaryDraw();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! "draw face boundaries" flag that overrides the one in the link.
   bool HasOwnFaceBoundaryDraw() const { return myHasOwnFaceBoundaryDraw; }
 
   //! Resets HasOwnFaceBoundaryDraw() flag, e.g. undoes SetFaceBoundaryDraw().
   void UnsetOwnFaceBoundaryDraw()
   {
     myHasOwnFaceBoundaryDraw = false;
     myFaceBoundaryDraw       = false;
   }
 
   //! Returns true if the drawer has its own attribute for face boundaries upper edge continuity
   //! class that overrides the one in the link.
   bool HasOwnFaceBoundaryUpperContinuity() const { return myFaceBoundaryUpperContinuity != -1; }
 
   //! Get the most edge continuity class; GeomAbs_CN by default (all edges).
   GeomAbs_Shape FaceBoundaryUpperContinuity() const
   {
     return HasOwnFaceBoundaryUpperContinuity()
              ? (GeomAbs_Shape)myFaceBoundaryUpperContinuity
              : (!myLink.IsNull() ? myLink->FaceBoundaryUpperContinuity() : GeomAbs_CN);
   }
 
   //! Set the most edge continuity class for face boundaries.
   void SetFaceBoundaryUpperContinuity(GeomAbs_Shape theMostAllowedEdgeClass)
   {
     myFaceBoundaryUpperContinuity = theMostAllowedEdgeClass;
   }
 
   //! Unset the most edge continuity class for face boundaries.
   void UnsetFaceBoundaryUpperContinuity() { myFaceBoundaryUpperContinuity = -1; }
 
   //! Returns own settings for the appearance of dimensions, settings from linked Drawer or NULL if
   //! neither was set.
   Standard_EXPORT const occ::handle<Prs3d_DimensionAspect>& DimensionAspect() const;
 
   //! Sets the settings for the appearance of dimensions.
   //! The method sets aspect owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   void SetDimensionAspect(const occ::handle<Prs3d_DimensionAspect>& theAspect)
   {
     myDimensionAspect = theAspect;
   }
 
   //! Returns true if the drawer has its own attribute for
   //! the appearance of dimensions that overrides the one in the link.
   bool HasOwnDimensionAspect() const { return !myDimensionAspect.IsNull(); }
 
   //! Sets dimension length model units for computing of dimension presentation.
   //! The method sets value owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   Standard_EXPORT void SetDimLengthModelUnits(const TCollection_AsciiString& theUnits);
 
   //! Sets dimension angle model units for computing of dimension presentation.
   //! The method sets value owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   Standard_EXPORT void SetDimAngleModelUnits(const TCollection_AsciiString& theUnits);
 
   //! Returns length model units for the dimension presentation.
   const TCollection_AsciiString& DimLengthModelUnits() const
   {
     return myHasOwnDimLengthModelUnits || myLink.IsNull() ? myDimensionModelUnits.GetLengthUnits()
                                                           : myLink->DimLengthModelUnits();
   }
 
   //! Returns angle model units for the dimension presentation.
   const TCollection_AsciiString& DimAngleModelUnits() const
   {
     return myHasOwnDimAngleModelUnits || myLink.IsNull() ? myDimensionModelUnits.GetAngleUnits()
                                                          : myLink->DimAngleModelUnits();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! dimension length model units that overrides the one in the link.
   bool HasOwnDimLengthModelUnits() const { return myHasOwnDimLengthModelUnits; }
 
   //! Resets HasOwnDimLengthModelUnits() flag, e.g. undoes SetDimLengthModelUnits().
   void UnsetOwnDimLengthModelUnits()
   {
     myHasOwnDimLengthModelUnits = false;
     myDimensionModelUnits.SetLengthUnits("m");
   }
 
   //! Returns true if the drawer has its own attribute for
   //! dimension angle model units that overrides the one in the link.
   bool HasOwnDimAngleModelUnits() const { return myHasOwnDimAngleModelUnits; }
 
   //! Resets HasOwnDimAngleModelUnits() flag, e.g. undoes SetDimAngleModelUnits().
   void UnsetOwnDimAngleModelUnits()
   {
     myHasOwnDimAngleModelUnits = false;
     myDimensionModelUnits.SetAngleUnits("rad");
   }
 
   //! Sets length units in which value for dimension presentation is displayed.
   //! The method sets value owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   Standard_EXPORT void SetDimLengthDisplayUnits(const TCollection_AsciiString& theUnits);
 
   //! Sets angle units in which value for dimension presentation is displayed.
   //! The method sets value owned by the drawer that will be used during
   //! visualization instead of the one set in link.
   Standard_EXPORT void SetDimAngleDisplayUnits(const TCollection_AsciiString& theUnits);
 
   //! Returns length units in which dimension presentation is displayed.
   const TCollection_AsciiString& DimLengthDisplayUnits() const
   {
     return myHasOwnDimLengthDisplayUnits || myLink.IsNull()
              ? myDimensionDisplayUnits.GetLengthUnits()
              : myLink->DimLengthDisplayUnits();
   }
 
   //! Returns angle units in which dimension presentation is displayed.
   const TCollection_AsciiString& DimAngleDisplayUnits() const
   {
     return myHasOwnDimAngleDisplayUnits || myLink.IsNull() ? myDimensionDisplayUnits.GetAngleUnits()
                                                            : myLink->DimAngleDisplayUnits();
   }
 
   //! Returns true if the drawer has its own attribute for
   //! length units in which dimension presentation is displayed
   //! that overrides the one in the link.
   bool HasOwnDimLengthDisplayUnits() const { return myHasOwnDimLengthDisplayUnits; }
 
   //! Resets HasOwnDimLengthModelUnits() flag, e.g. undoes SetDimLengthDisplayUnits().
   void UnsetOwnDimLengthDisplayUnits()
   {
     myHasOwnDimLengthDisplayUnits = false;
     myDimensionDisplayUnits.SetLengthUnits("m");
   }
 
   //! Returns true if the drawer has its own attribute for
   //! angle units in which dimension presentation is displayed
   //! that overrides the one in the link.
   bool HasOwnDimAngleDisplayUnits() const { return myHasOwnDimAngleDisplayUnits; }
 
   //! Resets HasOwnDimAngleDisplayUnits() flag, e.g. undoes SetDimLengthDisplayUnits().
   void UnsetOwnDimAngleDisplayUnits()
   {
     myHasOwnDimAngleDisplayUnits = false;
     myDimensionDisplayUnits.SetAngleUnits("deg");
   }
 
 public:
   //! Returns the drawer to which the current object references.
   const occ::handle<Prs3d_Drawer>& Link() const { return myLink; }
 
   //! Returns true if the current object has a link on the other drawer.
   bool HasLink() const { return !myLink.IsNull(); }
 
   //! Sets theDrawer as a link to which the current object references.
   void Link(const occ::handle<Prs3d_Drawer>& theDrawer) { SetLink(theDrawer); }
 
   //! Sets theDrawer as a link to which the current object references.
   void SetLink(const occ::handle<Prs3d_Drawer>& theDrawer) { myLink = theDrawer; }
 
   //! Removes local attributes.
   Standard_EXPORT void ClearLocalAttributes();
 
   //! Assign shader program for specified type of primitives.
   //! @param theProgram new program to set (might be NULL)
   //! @param theAspect  the type of primitives
   //! @param theToOverrideDefaults if true then non-overridden attributes using defaults will be
   //! allocated and copied from the Link;
   //!                              otherwise, only already customized attributes will be changed
   //! @return TRUE if presentation should be recomputed after creating aspects not previously
   //! customized (if theToOverrideDefaults is also TRUE)
   Standard_EXPORT bool SetShaderProgram(const occ::handle<Graphic3d_ShaderProgram>& theProgram,
                                         const Graphic3d_GroupAspect                 theAspect,
                                         const bool theToOverrideDefaults = false);
 
   //! Sets Shading Model type for the shading aspect.
   Standard_EXPORT bool SetShadingModel(Graphic3d_TypeOfShadingModel theModel,
                                        bool                         theToOverrideDefaults = false);
 
   //! Dumps the content of me into the stream
   Standard_EXPORT void DumpJson(Standard_OStream& theOStream, int theDepth = -1) const override;
 
 public: //! @name deprecated methods
   Standard_DEPRECATED("SetDeviationAngle() should be used instead")
   void SetHLRAngle(const double theAngle) { SetDeviationAngle(theAngle); }
 
   Standard_DEPRECATED("DeviationAngle() should be used instead")
   double HLRAngle() const { return DeviationAngle(); }
 
   Standard_DEPRECATED("SetDeviationAngle() should be used instead")
   void SetHLRAngle() { SetDeviationAngle(); }
 
   Standard_DEPRECATED("HasOwnDeviationAngle() should be used instead")
   bool HasOwnHLRDeviationAngle() const { return HasOwnDeviationAngle(); }
 
   Standard_DEPRECATED("PreviousDeviationAngle() should be used instead")
   double PreviousHLRDeviationAngle() const { return PreviousDeviationAngle(); }
 
 protected:
   occ::handle<Prs3d_Drawer> myLink;
 
   int                     myNbPoints;
   double                  myMaximalParameterValue;
   double                  myChordialDeviation;
   Aspect_TypeOfDeflection myTypeOfDeflection;
   bool                    myHasOwnTypeOfDeflection;
   Prs3d_TypeOfHLR         myTypeOfHLR;
   double                  myDeviationCoefficient;
   double                  myPreviousDeviationCoefficient;
   double                  myDeviationAngle;
   double                  myPreviousDeviationAngle;
   bool                    myIsoOnPlane;
   bool                    myHasOwnIsoOnPlane;
   bool                    myIsoOnTriangulation;
   bool                    myHasOwnIsoOnTriangulation;
   bool                    myIsAutoTriangulated;
   bool                    myHasOwnIsAutoTriangulated;
 
   occ::handle<Prs3d_IsoAspect>     myUIsoAspect;
   occ::handle<Prs3d_IsoAspect>     myVIsoAspect;
   occ::handle<Prs3d_LineAspect>    myWireAspect;
   bool                             myWireDraw;
   bool                             myHasOwnWireDraw;
   occ::handle<Prs3d_PointAspect>   myPointAspect;
   occ::handle<Prs3d_LineAspect>    myLineAspect;
   occ::handle<Prs3d_TextAspect>    myTextAspect;
   occ::handle<Prs3d_ShadingAspect> myShadingAspect;
   occ::handle<Prs3d_PlaneAspect>   myPlaneAspect;
   occ::handle<Prs3d_LineAspect>    mySeenLineAspect;
   occ::handle<Prs3d_ArrowAspect>   myArrowAspect;
   bool                             myLineArrowDraw;
   bool                             myHasOwnLineArrowDraw;
   occ::handle<Prs3d_LineAspect>    myHiddenLineAspect;
   bool                             myDrawHiddenLine;
   bool                             myHasOwnDrawHiddenLine;
   occ::handle<Prs3d_LineAspect>    myVectorAspect;
   Prs3d_VertexDrawMode             myVertexDrawMode;
   occ::handle<Prs3d_DatumAspect>   myDatumAspect;
   occ::handle<Prs3d_LineAspect>    mySectionAspect;
 
   occ::handle<Prs3d_LineAspect> myFreeBoundaryAspect;
   bool                          myFreeBoundaryDraw;
   bool                          myHasOwnFreeBoundaryDraw;
   occ::handle<Prs3d_LineAspect> myUnFreeBoundaryAspect;
   bool                          myUnFreeBoundaryDraw;
   bool                          myHasOwnUnFreeBoundaryDraw;
   occ::handle<Prs3d_LineAspect> myFaceBoundaryAspect;
   // clang-format off
   int              myFaceBoundaryUpperContinuity; //!< the most edge continuity class (GeomAbs_Shape) to be included to face boundaries presentation, or -1 if undefined
   // clang-format on
   bool myFaceBoundaryDraw;
   bool myHasOwnFaceBoundaryDraw;
 
   occ::handle<Prs3d_DimensionAspect> myDimensionAspect;
   Prs3d_DimensionUnits               myDimensionModelUnits;
   bool                               myHasOwnDimLengthModelUnits;
   bool                               myHasOwnDimAngleModelUnits;
   Prs3d_DimensionUnits               myDimensionDisplayUnits;
   bool                               myHasOwnDimLengthDisplayUnits;
   bool                               myHasOwnDimAngleDisplayUnits;
 };
 
 #endif // _Prs3d_Drawer_HeaderFile

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