// Created on: 2011-10-14 
// Created by: Roman KOZLOV
// Copyright (c) 2011-2014 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 IVtkTOOLS_H
#define IVtkTOOLS_H

#include <IVtk_Types.hxx>
#include <vtkSmartPointer.h>

class vtkLookupTable;
class vtkMapper;

//! Helper methods to facilitate usage of VIS classes in an application.
namespace IVtkTools
{

  //! Returns vtkLookupTable instance initialized by standrad OCCT colors used 
  //! in wireframe mode for different kinds of sub-shapes (free/boundary/shared 
  //! edges, isolines,...)
  Standard_EXPORT vtkSmartPointer<vtkLookupTable> InitLookupTable();

  //! Set a color for given type of sub-shapes.
  //! @param [in,out] theColorTable vtkLookupTable to set the color.
  //! @param [in]  theColorRole type of sub-shapes to set the color.
  //! @param [in]  theR red color component. Use [0,1] double values.
  //! @param [in]  theG green color component. Use [0,1] double values.
  //! @param [in]  theB blue color component. Use [0,1] double values.
  //! @param [in]  theA the alpha value (the opacity) as a double between 0 and 1.
  Standard_EXPORT void SetLookupTableColor (vtkLookupTable* theColorTable, 
                                            const IVtk_MeshType theColorRole, 
                                            const double theR, const double theG, const double theB, 
                                            const double theA = 1);

  //! Get a color for given type of sub-shapes.
  //! @param [in]  theColorTable vtkLookupTable to set the color.
  //! @param [in]  theColorRole type of sub-shapes to set the color.
  //! @param [out] theR red color component as a double between 0 and 1.
  //! @param [out] theG green color component as a double between 0 and 1.
  //! @param [out] theB blue color component as a double between 0 and 1.
  Standard_EXPORT void GetLookupTableColor (vtkLookupTable* theColorTable, 
                                            const IVtk_MeshType theColorRole, 
                                            double &theR, double &theG, double &theB);

  //! Get a color for given type of sub-shapes.
  //! @param [in]  theColorTable vtkLookupTable to set the color.
  //! @param [in]  theColorRole type of sub-shapes to set the color.
  //! @param [out] theR red color component as a double between 0 and 1.
  //! @param [out] theG green color component as a double between 0 and 1.
  //! @param [out] theB blue color component as a double between 0 and 1.
  //! @param [out] theA the alpha value (the opacity) as a double between 0 and 1.
  Standard_EXPORT void GetLookupTableColor (vtkLookupTable* theColorTable, 
                                            const IVtk_MeshType theColorRole, 
                                            double &theR, double &theG, double &theB, 
                                            double &theA);

  //! Set up the initial shape mapper parameters with default OCC colors.
  Standard_EXPORT void InitShapeMapper (vtkMapper* theMapper);

  //! Set up the initial shape mapper parameters with user colors.
  //! @param [in,out] theMapper mapper to initialize
  //! @param [in] theColorTable a table with user's colors definition
  Standard_EXPORT void InitShapeMapper (vtkMapper* theMapper, 
                                        vtkLookupTable* theColorTable);

}

#endif // IVtkTOOLS_H
