// Created on: 1997-03-12
// Created by: Alexander BRIVIN
// Copyright (c) 1997-1999 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 _VrmlConverter_ShadingAspect_HeaderFile
#define _VrmlConverter_ShadingAspect_HeaderFile

#include "Standard.hxx"
#include "Standard_Type.hxx"

#include "Vrml_ShapeHints.hxx"
#include "Standard_Transient.hxx"
class Vrml_Material;

//! qualifies the aspect properties for
//! the VRML conversation of ShadedShape.
class VrmlConverter_ShadingAspect : public Standard_Transient
{

public:
  //! create a default ShadingAspect.
  Standard_EXPORT VrmlConverter_ShadingAspect();

  Standard_EXPORT void SetFrontMaterial(const occ::handle<Vrml_Material>& aMaterial);

  Standard_EXPORT occ::handle<Vrml_Material> FrontMaterial() const;

  Standard_EXPORT void SetShapeHints(const Vrml_ShapeHints& aShapeHints);

  Standard_EXPORT Vrml_ShapeHints ShapeHints() const;

  //! defines necessary of a calculation of normals for ShadedShape to more
  //! accurately display curved surfaces, pacticularly when smoooth or phong
  //! shading is used in VRML viewer.
  //! By default False - the normals are not calculated,
  //! True - the normals are calculated.
  //! Warning: If normals are calculated the resulting VRML file will
  //! be substantially lager.
  Standard_EXPORT void SetHasNormals(const bool OnOff);

  //! returns True if the normals are calculating
  Standard_EXPORT bool HasNormals() const;

  //! defines necessary of writing Material from Vrml into output OStream.
  //! By default False - the material is not writing into OStream,
  //! True - the material is writing.
  Standard_EXPORT void SetHasMaterial(const bool OnOff);

  //! returns True if the materials is writing into OStream.
  Standard_EXPORT bool HasMaterial() const;

  DEFINE_STANDARD_RTTIEXT(VrmlConverter_ShadingAspect, Standard_Transient)

private:
  occ::handle<Vrml_Material> myFrontMaterial;
  Vrml_ShapeHints            myShapeHints;
  bool                       myHasNormals;
  bool                       myHasMaterial;
};

#endif // _VrmlConverter_ShadingAspect_HeaderFile