// Copyright (c) 2019 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 _Graphic3d_Aspects_HeaderFile
#define _Graphic3d_Aspects_HeaderFile

#include "Aspect_InteriorStyle.hxx"
#include "Aspect_TypeOfDisplayText.hxx"
#include "Aspect_TypeOfLine.hxx"
#include "Aspect_TypeOfStyleText.hxx"
#include "Font_FontAspect.hxx"
#include "Graphic3d_AlphaMode.hxx"
#include "Graphic3d_MarkerImage.hxx"
#include "Graphic3d_MaterialAspect.hxx"
#include "Graphic3d_HatchStyle.hxx"
#include "Graphic3d_PolygonOffset.hxx"
#include "Graphic3d_ShaderProgram.hxx"
#include "Graphic3d_TextureSet.hxx"
#include "Graphic3d_TypeOfBackfacingModel.hxx"
#include "Graphic3d_TypeOfShadingModel.hxx"
#include "TCollection_HAsciiString.hxx"

//! This class defines graphic attributes.
class Graphic3d_Aspects : public Standard_Transient
{
  DEFINE_STANDARD_RTTIEXT(Graphic3d_Aspects, Standard_Transient)
public:
  //! Creates a context table for drawing primitives defined with the following default values:
  Standard_EXPORT Graphic3d_Aspects();

  //! Return interior rendering style; Aspect_IS_SOLID by default.
  Aspect_InteriorStyle InteriorStyle() const { return myInteriorStyle; }

  //! Modifies the interior type used for rendering
  void SetInteriorStyle(const Aspect_InteriorStyle theStyle) { myInteriorStyle = theStyle; }

  //! Returns shading model; Graphic3d_TypeOfShadingModel_DEFAULT by default.
  //! Graphic3d_TOSM_DEFAULT means that Shading Model set as default for entire Viewer will be used.
  Graphic3d_TypeOfShadingModel ShadingModel() const { return myShadingModel; }

  //! Sets shading model
  void SetShadingModel(const Graphic3d_TypeOfShadingModel theShadingModel)
  {
    myShadingModel = theShadingModel;
  }

  //! Returns the way how alpha value should be treated (Graphic3d_AlphaMode_BlendAuto by default,
  //! for backward compatibility).
  Graphic3d_AlphaMode AlphaMode() const { return myAlphaMode; }

  //! Returns alpha cutoff threshold, for discarding fragments within Graphic3d_AlphaMode_Mask mode
  //! (0.5 by default). If the alpha value is greater than or equal to this value then it is
  //! rendered as fully opaque, otherwise, it is rendered as fully transparent.
  float AlphaCutoff() const { return myAlphaCutoff; }

  //! Defines the way how alpha value should be treated.
  void SetAlphaMode(Graphic3d_AlphaMode theMode, float theAlphaCutoff = 0.5f)
  {
    myAlphaMode   = theMode;
    myAlphaCutoff = theAlphaCutoff;
  }

  //! Return color
  const Quantity_ColorRGBA& ColorRGBA() const { return myInteriorColor; }

  //! Return the color.
  const Quantity_Color& Color() const { return myInteriorColor.GetRGB(); }

  //! Modifies the color.
  void SetColor(const Quantity_Color& theColor) { myInteriorColor.SetRGB(theColor); }

  //! Return interior color.
  const Quantity_Color& InteriorColor() const { return myInteriorColor.GetRGB(); }

  //! Return interior color.
  const Quantity_ColorRGBA& InteriorColorRGBA() const { return myInteriorColor; }

  //! Modifies the color of the interior of the face
  void SetInteriorColor(const Quantity_Color& theColor) { myInteriorColor.SetRGB(theColor); }

  //! Modifies the color of the interior of the face
  void SetInteriorColor(const Quantity_ColorRGBA& theColor) { myInteriorColor = theColor; }

  //! Return back interior color.
  const Quantity_Color& BackInteriorColor() const { return myBackInteriorColor.GetRGB(); }

  //! Return back interior color.
  const Quantity_ColorRGBA& BackInteriorColorRGBA() const { return myBackInteriorColor; }

  //! Modifies the color of the interior of the back face
  void SetBackInteriorColor(const Quantity_Color& theColor)
  {
    myBackInteriorColor.SetRGB(theColor);
  }

  //! Modifies the color of the interior of the back face
  void SetBackInteriorColor(const Quantity_ColorRGBA& theColor) { myBackInteriorColor = theColor; }

  //! Returns the surface material of external faces
  const Graphic3d_MaterialAspect& FrontMaterial() const { return myFrontMaterial; }

  //! Returns the surface material of external faces
  Graphic3d_MaterialAspect& ChangeFrontMaterial() { return myFrontMaterial; }

  //! Modifies the surface material of external faces
  void SetFrontMaterial(const Graphic3d_MaterialAspect& theMaterial)
  {
    myFrontMaterial = theMaterial;
  }

  //! Returns the surface material of internal faces
  const Graphic3d_MaterialAspect& BackMaterial() const { return myBackMaterial; }

  //! Returns the surface material of internal faces
  Graphic3d_MaterialAspect& ChangeBackMaterial() { return myBackMaterial; }

  //! Modifies the surface material of internal faces
  void SetBackMaterial(const Graphic3d_MaterialAspect& theMaterial)
  {
    myBackMaterial = theMaterial;
  }

  //! Return face culling mode; Graphic3d_FaceCulling_BackClosed by default.
  //! A back-facing polygon is defined as a polygon whose
  //! vertices are in a clockwise order with respect to screen coordinates.
  Graphic3d_TypeOfBackfacingModel FaceCulling() const { return myFaceCulling; }

  //! Set face culling mode.
  void SetFaceCulling(Graphic3d_TypeOfBackfacingModel theCulling) { myFaceCulling = theCulling; }

  //! Returns true if material properties should be distinguished for back and front faces (false by
  //! default).
  bool Distinguish() const { return myToDistinguishMaterials; }

  //! Set material distinction between front and back faces.
  void SetDistinguish(bool toDistinguish) { myToDistinguishMaterials = toDistinguish; }

  //! Allows material distinction between front and back faces.
  void SetDistinguishOn() { myToDistinguishMaterials = true; }

  //! Forbids material distinction between front and back faces.
  void SetDistinguishOff() { myToDistinguishMaterials = false; }

  //! Return true if per-vertex color should be applied to back-facing fragments.
  //! True by default for backward compatibility.
  bool ToUseVertexColorForBackFaces() const { return myToUseVertexColorForBackFaces; }

  //! Set whether per-vertex color should be applied to back-facing fragments.
  //! When disabled, back faces use back material/interior color without vertex color modulation.
  void SetUseVertexColorForBackFaces(bool theToUse) { myToUseVertexColorForBackFaces = theToUse; }

  //! Return shader program.
  const occ::handle<Graphic3d_ShaderProgram>& ShaderProgram() const { return myProgram; }

  //! Sets up OpenGL/GLSL shader program.
  void SetShaderProgram(const occ::handle<Graphic3d_ShaderProgram>& theProgram)
  {
    myProgram = theProgram;
  }

  //! Return texture array to be mapped.
  const occ::handle<Graphic3d_TextureSet>& TextureSet() const { return myTextureSet; }

  //! Setup texture array to be mapped.
  void SetTextureSet(const occ::handle<Graphic3d_TextureSet>& theTextures)
  {
    myTextureSet = theTextures;
  }

  //! Return texture to be mapped.
  // Standard_DEPRECATED("Deprecated method, TextureSet() should be used instead")
  occ::handle<Graphic3d_TextureMap> TextureMap() const
  {
    return !myTextureSet.IsNull() && !myTextureSet->IsEmpty() ? myTextureSet->First()
                                                              : occ::handle<Graphic3d_TextureMap>();
  }

  //! Assign texture to be mapped.
  //! See also SetTextureMapOn() to actually activate texture mapping.
  // Standard_DEPRECATED("Deprecated method, SetTextureSet() should be used instead")
  Standard_EXPORT void SetTextureMap(const occ::handle<Graphic3d_TextureMap>& theTexture);

  //! Return true if texture mapping is enabled (false by default).
  bool ToMapTexture() const { return myToMapTexture; }

  //! Return true if texture mapping is enabled (false by default).
  bool TextureMapState() const { return myToMapTexture; }

  //! Enable or disable texture mapping (has no effect if texture is not set).
  void SetTextureMapOn(bool theToMap) { myToMapTexture = theToMap; }

  //! Enable texture mapping (has no effect if texture is not set).
  void SetTextureMapOn() { myToMapTexture = true; }

  //! Disable texture mapping.
  void SetTextureMapOff() { myToMapTexture = false; }

  //! Returns current polygon offsets settings.
  const Graphic3d_PolygonOffset& PolygonOffset() const { return myPolygonOffset; }

  //! Sets polygon offsets settings.
  void SetPolygonOffset(const Graphic3d_PolygonOffset& theOffset) { myPolygonOffset = theOffset; }

  //! Returns current polygon offsets settings.
  void PolygonOffsets(int& theMode, float& theFactor, float& theUnits) const
  {
    theMode   = myPolygonOffset.Mode;
    theFactor = myPolygonOffset.Factor;
    theUnits  = myPolygonOffset.Units;
  }

  //! Sets up OpenGL polygon offsets mechanism.
  //! <aMode> parameter can contain various combinations of
  //! Aspect_PolygonOffsetMode enumeration elements (Aspect_POM_None means
  //! that polygon offsets are not changed).
  //! If <aMode> is different from Aspect_POM_Off and Aspect_POM_None, then <aFactor> and <aUnits>
  //! arguments are used by graphic renderer to calculate a depth offset value:
  //!
  //! offset = <aFactor> * m + <aUnits> * r, where
  //! m - maximum depth slope for the polygon currently being displayed,
  //! r - minimum window coordinates depth resolution (implementation-specific)
  //!
  //! Default settings for OCC 3D viewer: mode = Aspect_POM_Fill, factor = 1., units = 1.
  //!
  //! Negative offset values move polygons closer to the viewport,
  //! while positive values shift polygons away.
  //! Consult OpenGL reference for details (glPolygonOffset function description).
  void SetPolygonOffsets(const int   theMode,
                         const float theFactor = 1.0f,
                         const float theUnits  = 0.0f)
  {
    myPolygonOffset.Mode   = (Aspect_PolygonOffsetMode)(theMode & Aspect_POM_Mask);
    myPolygonOffset.Factor = theFactor;
    myPolygonOffset.Units  = theUnits;
  }

  //! @name parameters specific to Line primitive rendering
public:
  //! Return line type; Aspect_TOL_SOLID by default.
  Aspect_TypeOfLine LineType() const { return myLineType; }

  //! Modifies the line type
  void SetLineType(Aspect_TypeOfLine theType)
  {
    myLineType    = theType;
    myLinePattern = DefaultLinePatternForType(theType);
  }

  //! Return custom stipple line pattern; 0xFFFF by default.
  uint16_t LinePattern() const { return myLinePattern; }

  //! Modifies the stipple line pattern, and changes line type to Aspect_TOL_USERDEFINED for
  //! non-standard pattern.
  void SetLinePattern(uint16_t thePattern)
  {
    myLineType    = DefaultLineTypeForPattern(thePattern);
    myLinePattern = thePattern;
  }

  //! Return a multiplier for each bit in the line stipple pattern within [1, 256] range; 1 by
  //! default.
  uint16_t LineStippleFactor() const { return myLineFactor; }

  //! Set a multiplier for each bit in the line stipple pattern.
  void SetLineStippleFactor(uint16_t theFactor)
  {
    if (theFactor == 0 || theFactor > 256)
    {
      throw Standard_OutOfRange("Graphic3d_Aspects::SetLineStippleFactor(), bad factor value");
    }
    myLineFactor = theFactor;
  }

  //! Return width for edges in pixels; 1.0 by default.
  float LineWidth() const { return myLineWidth; }

  //! Modifies the line thickness
  //! Warning: Raises Standard_OutOfRange if the width is a negative value.
  void SetLineWidth(float theWidth)
  {
    if (theWidth <= 0.0f)
    {
      throw Standard_OutOfRange("Bad value for EdgeLineWidth");
    }
    myLineWidth = theWidth;
  }

  //! Return stipple line pattern for line type.
  static uint16_t DefaultLinePatternForType(Aspect_TypeOfLine theType)
  {
    switch (theType)
    {
      case Aspect_TOL_DASH:
        return 0xFFC0;
      case Aspect_TOL_DOT:
        return 0xCCCC;
      case Aspect_TOL_DOTDASH:
        return 0xFF18;
      case Aspect_TOL_EMPTY:
        return 0x0000;
      case Aspect_TOL_SOLID:
        return 0xFFFF;
      case Aspect_TOL_USERDEFINED:
        return 0xFF24;
    }
    return 0xFFFF;
  }

  //! Return line type for stipple line pattern.
  static Aspect_TypeOfLine DefaultLineTypeForPattern(uint16_t thePattern)
  {
    switch (thePattern)
    {
      case 0x0000:
        return Aspect_TOL_EMPTY;
      case 0xFFC0:
        return Aspect_TOL_DASH;
      case 0xCCCC:
        return Aspect_TOL_DOT;
      case 0xFF18:
        return Aspect_TOL_DOTDASH;
      case 0xFFFF:
        return Aspect_TOL_SOLID;
      case 0xFF24:
        return Aspect_TOL_USERDEFINED;
    }
    return Aspect_TOL_USERDEFINED;
  }

  //! @name parameters specific to Point (Marker) primitive rendering
public:
  //! Return marker type; Aspect_TOM_POINT by default.
  Aspect_TypeOfMarker MarkerType() const { return myMarkerType; }

  //! Modifies the type of marker.
  void SetMarkerType(Aspect_TypeOfMarker theType) { myMarkerType = theType; }

  //! Return marker scale factor; 1.0 by default.
  float MarkerScale() const { return myMarkerScale; }

  //! Modifies the scale factor.
  //! Marker type Aspect_TOM_POINT is not affected by the marker size scale factor.
  //! It is always the smallest displayable dot.
  //! Warning: Raises Standard_OutOfRange if the scale is a negative value.
  void SetMarkerScale(const float theScale)
  {
    if (theScale <= 0.0f)
    {
      throw Standard_OutOfRange("Bad value for MarkerScale");
    }
    myMarkerScale = theScale;
  }

  //! Returns marker's image texture.
  //! Could be null handle if marker aspect has been initialized as default type of marker.
  const occ::handle<Graphic3d_MarkerImage>& MarkerImage() const { return myMarkerImage; }

  //! Set marker's image texture.
  void SetMarkerImage(const occ::handle<Graphic3d_MarkerImage>& theImage)
  {
    myMarkerImage = theImage;
  }

  //! Returns TRUE if marker should be drawn using marker sprite (either user-provided or
  //! generated).
  bool IsMarkerSprite() const
  {
    if (myMarkerType == Aspect_TOM_POINT || myMarkerType == Aspect_TOM_EMPTY)
    {
      return false;
    }

    return myMarkerType != Aspect_TOM_USERDEFINED || !myMarkerImage.IsNull();
  }

  //! @name parameters specific to text rendering
public:
  //! Returns the font; NULL string by default.
  const occ::handle<TCollection_HAsciiString>& TextFont() const { return myTextFont; }

  //! Modifies the font.
  void SetTextFont(const occ::handle<TCollection_HAsciiString>& theFont) { myTextFont = theFont; }

  //! Returns text FontAspect
  Font_FontAspect TextFontAspect() const { return myTextFontAspect; }

  //! Turns usage of Aspect text
  void SetTextFontAspect(Font_FontAspect theFontAspect) { myTextFontAspect = theFontAspect; }

  //! Returns display type; Aspect_TODT_NORMAL by default.
  Aspect_TypeOfDisplayText TextDisplayType() const { return myTextDisplayType; }

  //! Sets display type.
  void SetTextDisplayType(Aspect_TypeOfDisplayText theType) { myTextDisplayType = theType; }

  //! Returns text background/shadow color; equals to EdgeColor() property.
  const Quantity_ColorRGBA& ColorSubTitleRGBA() const { return myEdgeColor; }

  //! Return text background/shadow color; equals to EdgeColor() property.
  const Quantity_Color& ColorSubTitle() const { return myEdgeColor.GetRGB(); }

  //! Modifies text background/shadow color; equals to EdgeColor() property.
  void SetColorSubTitle(const Quantity_Color& theColor) { myEdgeColor.SetRGB(theColor); }

  //! Modifies text background/shadow color; equals to EdgeColor() property.
  void SetColorSubTitle(const Quantity_ColorRGBA& theColor) { myEdgeColor = theColor; }

  //! Returns TRUE when the Text Zoomable is on.
  bool IsTextZoomable() const { return myIsTextZoomable; }

  //! Turns usage of text zoomable on/off
  void SetTextZoomable(bool theFlag) { myIsTextZoomable = theFlag; }

  //! Returns the text style; Aspect_TOST_NORMAL by default.
  Aspect_TypeOfStyleText TextStyle() const { return myTextStyle; }

  //! Modifies the style of the text.
  void SetTextStyle(Aspect_TypeOfStyleText theStyle) { myTextStyle = theStyle; }

  //! Returns Angle of degree
  float TextAngle() const { return myTextAngle; }

  //! Turns usage of text rotated
  void SetTextAngle(float theAngle) { myTextAngle = (float)theAngle; }

  //! @name parameters specific to Mesh Edges (of triangulation primitive) rendering
public:
  //! Returns true if mesh edges should be drawn (false by default).
  bool ToDrawEdges() const { return myToDrawEdges && myLineType != Aspect_TOL_EMPTY; }

  //! Set if mesh edges should be drawn or not.
  void SetDrawEdges(bool theToDraw)
  {
    myToDrawEdges = theToDraw;
    if (myLineType == Aspect_TOL_EMPTY)
    {
      myLineType = Aspect_TOL_SOLID;
    }
  }

  //! The edges of FillAreas are drawn.
  void SetEdgeOn() { SetDrawEdges(true); }

  //! The edges of FillAreas are not drawn.
  void SetEdgeOff() { SetDrawEdges(false); }

  //! Return color of edges.
  const Quantity_Color& EdgeColor() const { return myEdgeColor.GetRGB(); }

  //! Return color of edges.
  const Quantity_ColorRGBA& EdgeColorRGBA() const { return myEdgeColor; }

  //! Modifies the color of the edge of the face
  void SetEdgeColor(const Quantity_Color& theColor) { myEdgeColor.SetRGB(theColor); }

  //! Modifies the color of the edge of the face
  void SetEdgeColor(const Quantity_ColorRGBA& theColor) { myEdgeColor = theColor; }

  //! Return edges line type (same as LineType()).
  Aspect_TypeOfLine EdgeLineType() const { return myLineType; }

  //! Modifies the edge line type (same as SetLineType())
  void SetEdgeLineType(Aspect_TypeOfLine theType) { SetLineType(theType); }

  //! Return width for edges in pixels (same as LineWidth()).
  float EdgeWidth() const { return myLineWidth; }

  //! Modifies the edge thickness (same as SetLineWidth())
  void SetEdgeWidth(double theWidth) { SetLineWidth((float)theWidth); }

  //! Returns TRUE if drawing element edges should discard first edge in triangle; FALSE by default.
  //! Graphics hardware works mostly with triangles, so that wireframe presentation will draw
  //! triangle edges by default. This flag allows rendering wireframe presentation of quad-only
  //! array split into triangles. For this, quads should be split in specific order, so that the
  //! quad diagonal (to be NOT rendered) goes first:
  //!     1------2
  //!    /      /   Triangle #1: 2-0-1; Triangle #2: 0-2-3
  //!   0------3
  bool ToSkipFirstEdge() const { return myToSkipFirstEdge; }

  //! Set skip first triangle edge flag for drawing wireframe presentation of quads array split into
  //! triangles.
  void SetSkipFirstEdge(bool theToSkipFirstEdge) { myToSkipFirstEdge = theToSkipFirstEdge; }

  //! Returns TRUE if silhouette (outline) should be drawn (with edge color and width); FALSE by
  //! default.
  bool ToDrawSilhouette() const { return myToDrawSilhouette; }

  //! Enables/disables drawing silhouette (outline).
  void SetDrawSilhouette(bool theToDraw) { myToDrawSilhouette = theToDraw; }

public:
  //! Returns the hatch type used when InteriorStyle is IS_HATCH
  const occ::handle<Graphic3d_HatchStyle>& HatchStyle() const { return myHatchStyle; }

  //! Modifies the hatch type used when InteriorStyle is IS_HATCH
  void SetHatchStyle(const occ::handle<Graphic3d_HatchStyle>& theStyle) { myHatchStyle = theStyle; }

  //! Modifies the hatch type used when InteriorStyle is IS_HATCH
  //! @warning This method always creates a new handle for a given hatch style
  void SetHatchStyle(const Aspect_HatchStyle theStyle)
  {
    if (theStyle == Aspect_HS_SOLID)
    {
      myHatchStyle.Nullify();
      return;
    }

    myHatchStyle = new Graphic3d_HatchStyle(theStyle);
  }

public:
  //! Check for equality with another aspects.
  bool IsEqual(const Graphic3d_Aspects& theOther)
  {
    if (this == &theOther)
    {
      return true;
    }

    return myProgram == theOther.myProgram && myTextureSet == theOther.myTextureSet
           && myMarkerImage == theOther.myMarkerImage && myInteriorColor == theOther.myInteriorColor
           && myBackInteriorColor == theOther.myBackInteriorColor
           && myFrontMaterial == theOther.myFrontMaterial
           && myBackMaterial == theOther.myBackMaterial
           && myInteriorStyle == theOther.myInteriorStyle
           && myShadingModel == theOther.myShadingModel && myFaceCulling == theOther.myFaceCulling
           && myAlphaMode == theOther.myAlphaMode && myAlphaCutoff == theOther.myAlphaCutoff
           && myLineType == theOther.myLineType && myEdgeColor == theOther.myEdgeColor
           && myLineWidth == theOther.myLineWidth && myLineFactor == theOther.myLineFactor
           && myLinePattern == theOther.myLinePattern && myMarkerType == theOther.myMarkerType
           && myMarkerScale == theOther.myMarkerScale && myHatchStyle == theOther.myHatchStyle
           && myTextFont == theOther.myTextFont && myPolygonOffset == theOther.myPolygonOffset
           && myTextStyle == theOther.myTextStyle && myTextDisplayType == theOther.myTextDisplayType
           && myTextFontAspect == theOther.myTextFontAspect && myTextAngle == theOther.myTextAngle
           && myToSkipFirstEdge == theOther.myToSkipFirstEdge
           && myToDistinguishMaterials == theOther.myToDistinguishMaterials
           && myToUseVertexColorForBackFaces == theOther.myToUseVertexColorForBackFaces
           && myToDrawEdges == theOther.myToDrawEdges
           && myToDrawSilhouette == theOther.myToDrawSilhouette
           && myToMapTexture == theOther.myToMapTexture
           && myIsTextZoomable == theOther.myIsTextZoomable;
  }

  //! Dumps the content of me into the stream
  Standard_EXPORT virtual void DumpJson(Standard_OStream& theOStream, int theDepth = -1) const;

public:
  Standard_DEPRECATED("Deprecated method, FaceCulling() should be used instead")
  bool ToSuppressBackFaces() const
  {
    return myFaceCulling == Graphic3d_TypeOfBackfacingModel_BackCulled
           || myFaceCulling == Graphic3d_TypeOfBackfacingModel_Auto;
  }

  Standard_DEPRECATED("Deprecated method, SetFaceCulling() should be used "
                      "instead")
  void SetSuppressBackFaces(bool theToSuppress)
  {
    myFaceCulling = theToSuppress ? Graphic3d_TypeOfBackfacingModel_Auto
                                  : Graphic3d_TypeOfBackfacingModel_DoubleSided;
  }

  Standard_DEPRECATED("Deprecated method, FaceCulling() should be used instead")
  bool BackFace() const
  {
    return myFaceCulling == Graphic3d_TypeOfBackfacingModel_BackCulled
           || myFaceCulling == Graphic3d_TypeOfBackfacingModel_Auto;
  }

  Standard_DEPRECATED("Deprecated method, SetFaceCulling() should be used instead")
  void AllowBackFace() { myFaceCulling = Graphic3d_TypeOfBackfacingModel_DoubleSided; }

  Standard_DEPRECATED("Deprecated method, SetFaceCulling() should be used instead")
  void SuppressBackFace() { myFaceCulling = Graphic3d_TypeOfBackfacingModel_Auto; }

protected:
  occ::handle<Graphic3d_ShaderProgram>  myProgram;
  occ::handle<Graphic3d_TextureSet>     myTextureSet;
  occ::handle<Graphic3d_MarkerImage>    myMarkerImage;
  occ::handle<Graphic3d_HatchStyle>     myHatchStyle;
  occ::handle<TCollection_HAsciiString> myTextFont;
  Graphic3d_MaterialAspect              myFrontMaterial;
  Graphic3d_MaterialAspect              myBackMaterial;

  Quantity_ColorRGBA myInteriorColor;
  Quantity_ColorRGBA myBackInteriorColor;
  Quantity_ColorRGBA myEdgeColor;

  Graphic3d_PolygonOffset         myPolygonOffset;
  Aspect_InteriorStyle            myInteriorStyle;
  Graphic3d_TypeOfShadingModel    myShadingModel;
  Graphic3d_TypeOfBackfacingModel myFaceCulling;
  Graphic3d_AlphaMode             myAlphaMode;
  float                           myAlphaCutoff;

  Aspect_TypeOfLine myLineType;
  float             myLineWidth;
  uint16_t          myLineFactor;
  uint16_t          myLinePattern;

  Aspect_TypeOfMarker myMarkerType;
  float               myMarkerScale;

  Aspect_TypeOfStyleText   myTextStyle;
  Aspect_TypeOfDisplayText myTextDisplayType;
  Font_FontAspect          myTextFontAspect;
  float                    myTextAngle;

  bool myToSkipFirstEdge;
  bool myToDistinguishMaterials;
  bool myToUseVertexColorForBackFaces;
  bool myToDrawEdges;
  bool myToDrawSilhouette;
  bool myToMapTexture;
  bool myIsTextZoomable;
};

#endif // _Graphic3d_Aspects_HeaderFile