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 // Created on: 1996-12-20
 // Created by: Robert COUBLANC
 // Copyright (c) 1996-1999 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 _AIS_Shape_HeaderFile
 #define _AIS_Shape_HeaderFile
 
 #include <AIS_DisplayMode.hxx>
 #include <AIS_InteractiveObject.hxx>
 #include <Bnd_Box.hxx>
 #include <TopoDS_Shape.hxx>
 #include <Prs3d_Drawer.hxx>
 #include <Prs3d_TypeOfHLR.hxx>
 
 //! A framework to manage presentation and selection of shapes.
 //! AIS_Shape is the interactive object which is used the
 //! most by   applications. There are standard functions
 //! available which allow you to prepare selection
 //! operations on the constituent elements of shapes -
 //! vertices, edges, faces etc - in an open local context.
 //! The selection modes specific to "Shape" type objects
 //! are referred to as Standard Activation Mode. These
 //! modes are only taken into account in open local
 //! context and only act on Interactive Objects which
 //! have redefined the virtual method
 //! AcceptShapeDecomposition so that it returns true.
 //! Several advanced functions are also available. These
 //! include functions to manage deviation angle and
 //! deviation coefficient - both HLR and non-HLR - of
 //! an inheriting shape class. These services allow you to
 //! select one type of shape interactive object for higher
 //! precision drawing. When you do this, the
 //! Prs3d_Drawer::IsOwn... functions corresponding to the
 //! above deviation angle and coefficient functions return
 //! true indicating that there is a local setting available
 //! for the specific object.
 //!
 //! This class allows to map textures on shapes using native UV parametric space of underlying surface of each Face
 //! (this means that texture will be visually duplicated on all Faces).
 //! To generate texture coordinates, appropriate shading attribute should be set before computing presentation in AIS_Shaded display mode:
 //! @code
 //!   Handle(AIS_Shape) aPrs = new AIS_Shape();
 //!   aPrs->Attributes()->SetupOwnShadingAspect();
 //!   aPrs->Attributes()->ShadingAspect()->Aspect()->SetTextureMapOn();
 //!   aPrs->Attributes()->ShadingAspect()->Aspect()->SetTextureMap (new Graphic3d_Texture2Dmanual (Graphic3d_NOT_2D_ALUMINUM));
 //! @endcode
 //! The texture itself is parametrized in (0,1)x(0,1).
 class AIS_Shape : public AIS_InteractiveObject
 {
   DEFINE_STANDARD_RTTIEXT(AIS_Shape, AIS_InteractiveObject)
 public:
 
   //! Initializes construction of the shape shap from wires,
   //! edges and vertices.
   Standard_EXPORT AIS_Shape(const TopoDS_Shape& shap);
 
   //! Returns index 0. This value refers to SHAPE from TopAbs_ShapeEnum
   virtual Standard_Integer Signature() const Standard_OVERRIDE { return 0; }
 
   //! Returns Object as the type of Interactive Object.
   virtual AIS_KindOfInteractive Type() const Standard_OVERRIDE { return AIS_KindOfInteractive_Shape; }
 
   //! Returns true if the Interactive Object accepts shape decomposition.
   virtual Standard_Boolean AcceptShapeDecomposition() const Standard_OVERRIDE { return Standard_True; }
 
   //! Return true if specified display mode is supported.
   virtual Standard_Boolean AcceptDisplayMode (const Standard_Integer theMode) const Standard_OVERRIDE { return theMode >= 0 && theMode <= 2; }
 
   //! Returns this shape object.
   const TopoDS_Shape& Shape() const { return myshape; }
 
   //! Constructs an instance of the shape object theShape.
   void SetShape (const TopoDS_Shape& theShape)
   {
     myshape  = theShape;
     myCompBB = Standard_True;
   }
 
   //! Alias for ::SetShape().
   void Set (const TopoDS_Shape& theShape) { SetShape (theShape); }
 
   //! Sets a local value for deviation coefficient for this specific shape.
   Standard_EXPORT Standard_Boolean SetOwnDeviationCoefficient();
 
   //! Sets a local value for deviation angle for this specific shape.
   Standard_EXPORT Standard_Boolean SetOwnDeviationAngle();
   
   //! Sets a local value for deviation coefficient for this specific shape.
   Standard_EXPORT void SetOwnDeviationCoefficient (const Standard_Real aCoefficient);
 
   //! this compute a new angle and Deviation from the value anAngle
   //! and set the values stored in myDrawer with these that become local to the shape
   Standard_EXPORT void SetAngleAndDeviation (const Standard_Real anAngle);
   
   //! gives back the angle initial value put by the User.
   Standard_EXPORT Standard_Real UserAngle() const;
   
   //! sets myOwnDeviationAngle field in Prs3d_Drawer & recomputes presentation
   Standard_EXPORT void SetOwnDeviationAngle (const Standard_Real anAngle);
   
   //! Returns true and the values of the deviation
   //! coefficient aCoefficient and the previous deviation
   //! coefficient aPreviousCoefficient. If these values are
   //! not already set, false is returned.
   Standard_EXPORT Standard_Boolean OwnDeviationCoefficient (Standard_Real& aCoefficient, Standard_Real& aPreviousCoefficient) const;
   
   //! Returns true and the values of the deviation angle
   //! anAngle and the previous deviation angle aPreviousAngle.
   //! If these values are not already set, false is returned.
   Standard_EXPORT Standard_Boolean OwnDeviationAngle (Standard_Real& anAngle, Standard_Real& aPreviousAngle) const;
   
   //! Sets the type of HLR algorithm used by the shape
   void SetTypeOfHLR (const Prs3d_TypeOfHLR theTypeOfHLR) {  myDrawer->SetTypeOfHLR (theTypeOfHLR); }
 
   //! Gets the type of HLR algorithm
   Prs3d_TypeOfHLR TypeOfHLR() const { return myDrawer->TypeOfHLR(); }
 
   //! Sets the color aColor in the reconstructed
   //! compound shape. Acts via the Drawer methods below on the appearance of:
   //! -   free boundaries:
   //! Prs3d_Drawer_FreeBoundaryAspect,
   //! -   isos: Prs3d_Drawer_UIsoAspect,
   //! Prs3dDrawer_VIsoAspect,
   //! -   shared boundaries:
   //! Prs3d_Drawer_UnFreeBoundaryAspect,
   //! -   shading: Prs3d_Drawer_ShadingAspect,
   //! -   visible line color in hidden line mode:
   //! Prs3d_Drawer_SeenLineAspect
   //! -   hidden line color in hidden line mode:
   //! Prs3d_Drawer_HiddenLineAspect.
   Standard_EXPORT virtual void SetColor (const Quantity_Color& theColor) Standard_OVERRIDE;
 
   //! Removes settings for color in the reconstructed compound shape.
   Standard_EXPORT virtual void UnsetColor() Standard_OVERRIDE;
   
   //! Sets the value aValue for line width in the reconstructed compound shape.
   //! Changes line aspects for lines presentation.
   Standard_EXPORT virtual void SetWidth (const Standard_Real aValue) Standard_OVERRIDE;
   
   //! Removes the setting for line width in the reconstructed compound shape.
   Standard_EXPORT virtual void UnsetWidth() Standard_OVERRIDE;
 
   //! Allows you to provide settings for the material aName
   //! in the reconstructed compound shape.
   Standard_EXPORT virtual void SetMaterial (const Graphic3d_MaterialAspect& aName) Standard_OVERRIDE;
   
   //! Removes settings for material in the reconstructed compound shape.
   Standard_EXPORT virtual void UnsetMaterial() Standard_OVERRIDE;
   
   //! Sets the value aValue for transparency in the reconstructed compound shape.
   Standard_EXPORT virtual void SetTransparency (const Standard_Real aValue = 0.6) Standard_OVERRIDE;
   
   //! Removes the setting for transparency in the reconstructed compound shape.
   Standard_EXPORT virtual void UnsetTransparency() Standard_OVERRIDE;
   
   //! Constructs a bounding box with which to reconstruct
   //! compound topological shapes for presentation.
   Standard_EXPORT virtual const Bnd_Box& BoundingBox();
   
   //! AIS_InteractiveObject defines another virtual method BoundingBox,
   //! which is not the same as above; keep it visible.
   using AIS_InteractiveObject::BoundingBox;
 
   //! Returns the Color attributes of the shape accordingly to
   //! the current facing model;
   Standard_EXPORT virtual void Color (Quantity_Color& aColor) const Standard_OVERRIDE;
   
   //! Returns the NameOfMaterial attributes of the shape accordingly to
   //! the current facing model;
   Standard_EXPORT virtual Graphic3d_NameOfMaterial Material() const Standard_OVERRIDE;
   
   //! Returns the transparency attributes of the shape accordingly to
   //! the current facing model;
   Standard_EXPORT virtual Standard_Real Transparency() const Standard_OVERRIDE;
 
   //! Return shape type for specified selection mode.
   static TopAbs_ShapeEnum SelectionType (const Standard_Integer theSelMode)
   {
     switch (theSelMode)
     {
       case 1: return TopAbs_VERTEX;
       case 2: return TopAbs_EDGE;
       case 3: return TopAbs_WIRE;
       case 4: return TopAbs_FACE;
       case 5: return TopAbs_SHELL;
       case 6: return TopAbs_SOLID;
       case 7: return TopAbs_COMPSOLID;
       case 8: return TopAbs_COMPOUND;
       case 0: return TopAbs_SHAPE;
     }
     return TopAbs_SHAPE;
   }
 
   //! Return selection mode for specified shape type.
   static Standard_Integer SelectionMode (const TopAbs_ShapeEnum theShapeType)
   {
     switch (theShapeType)
     {
       case TopAbs_VERTEX:    return 1;
       case TopAbs_EDGE:      return 2;
       case TopAbs_WIRE:      return 3;
       case TopAbs_FACE:      return 4;
       case TopAbs_SHELL:     return 5;
       case TopAbs_SOLID:     return 6;
       case TopAbs_COMPSOLID: return 7;
       case TopAbs_COMPOUND:  return 8;
       case TopAbs_SHAPE:     return 0;
     }
     return 0;
   }
 
 public: //! @name methods to alter texture mapping properties
 
   //! Return texture repeat UV values; (1, 1) by default.
   const gp_Pnt2d& TextureRepeatUV() const { return myUVRepeat; }
 
   //! Sets the number of occurrences of the texture on each face. The texture itself is parameterized in (0,1) by (0,1).
   //! Each face of the shape to be textured is parameterized in UV space (Umin,Umax) by (Vmin,Vmax).
   void SetTextureRepeatUV (const gp_Pnt2d& theRepeatUV) { myUVRepeat = theRepeatUV; }
 
   //! Return texture origin UV position; (0, 0) by default.
   const gp_Pnt2d& TextureOriginUV() const { return myUVOrigin; }
 
   //! Use this method to change the origin of the texture.
   //! The texel (0,0) will be mapped to the surface (myUVOrigin.X(), myUVOrigin.Y()).
   void SetTextureOriginUV (const gp_Pnt2d& theOriginUV) { myUVOrigin = theOriginUV; }
 
   //! Return scale factor for UV coordinates; (1, 1) by default.
   const gp_Pnt2d& TextureScaleUV() const { return myUVScale; }
 
   //! Use this method to scale the texture (percent of the face).
   //! You can specify a scale factor for both U and V.
   //! Example: if you set ScaleU and ScaleV to 0.5 and you enable texture repeat,
   //!          the texture will appear twice on the face in each direction.
   void SetTextureScaleUV (const gp_Pnt2d& theScaleUV) { myUVScale = theScaleUV; }
 
 protected:
 
   //! Compute normal presentation.
   Standard_EXPORT virtual void Compute (const Handle(PrsMgr_PresentationManager)& thePrsMgr,
                                         const Handle(Prs3d_Presentation)& thePrs,
                                         const Standard_Integer theMode) Standard_OVERRIDE;
 
   //! Compute projected presentation.
   virtual void computeHLR (const Handle(Graphic3d_Camera)& theProjector,
                            const Handle(TopLoc_Datum3D)& theTrsf,
                            const Handle(Prs3d_Presentation)& thePrs) Standard_OVERRIDE
   {
     if (!theTrsf.IsNull()
       && theTrsf->Form() != gp_Identity)
     {
       const TopLoc_Location& aLoc = myshape.Location();
       const TopoDS_Shape aShape = myshape.Located (TopLoc_Location (theTrsf->Trsf()) * aLoc);
       computeHlrPresentation (theProjector, thePrs, aShape, myDrawer);
     }
     else
     {
       computeHlrPresentation (theProjector, thePrs, myshape, myDrawer);
     }
   }
 
   //! Compute selection.
   Standard_EXPORT virtual void ComputeSelection (const Handle(SelectMgr_Selection)& theSelection,
                                                  const Standard_Integer theMode) Standard_OVERRIDE;
   
   //! Create own aspects (if they do not exist) and set color to them.
   //! @return TRUE if new aspects have been created
   Standard_EXPORT bool setColor (const Handle(Prs3d_Drawer)& theDrawer, const Quantity_Color& theColor) const;
   
   //! Create own aspects (if they do not exist) and set width to them.
   //! @return TRUE if new aspects have been created
   Standard_EXPORT bool setWidth (const Handle(Prs3d_Drawer)& theDrawer, const Standard_Real theWidth) const;
   
   Standard_EXPORT void setTransparency (const Handle(Prs3d_Drawer)& theDrawer, const Standard_Real theValue) const;
   
   Standard_EXPORT void setMaterial (const Handle(Prs3d_Drawer)& theDrawer, const Graphic3d_MaterialAspect& theMaterial, const Standard_Boolean theToKeepColor, const Standard_Boolean theToKeepTransp) const;
 
   //! Replace aspects of already computed groups from drawer link by the new own value.
   Standard_EXPORT void replaceWithNewOwnAspects();
 
 public:
 
   //! Compute HLR presentation for specified shape.
   Standard_EXPORT static void computeHlrPresentation (const Handle(Graphic3d_Camera)& theProjector,
                                                       const Handle(Prs3d_Presentation)& thePrs,
                                                       const TopoDS_Shape& theShape,
                                                       const Handle(Prs3d_Drawer)& theDrawer);
 
   //! Dumps the content of me into the stream
   Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const Standard_OVERRIDE;
 
 protected:
 
   TopoDS_Shape     myshape;    //!< shape to display
   Bnd_Box          myBB;       //!< cached bounding box of the shape
   gp_Pnt2d         myUVOrigin; //!< UV origin vector for generating texture coordinates
   gp_Pnt2d         myUVRepeat; //!< UV repeat vector for generating texture coordinates
   gp_Pnt2d         myUVScale;  //!< UV scale  vector for generating texture coordinates
   Standard_Real    myInitAng;
   Standard_Boolean myCompBB;   //!< if TRUE, then bounding box should be recomputed
 
 };
 
 DEFINE_STANDARD_HANDLE(AIS_Shape, AIS_InteractiveObject)
 
 #endif // _AIS_Shape_HeaderFile

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