// Created on: 2016-10-11
// Created by: Ilya SEVRIKOV
// Copyright (c) 2016 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 _V3d_Trihedron_HeaderFile
#define _V3d_Trihedron_HeaderFile

#include <Graphic3d_StructureManager.hxx>
#include <Graphic3d_TransformPers.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Prs3d_ShadingAspect.hxx>
#include <Prs3d_TextAspect.hxx>
#include <V3d_TypeOfAxe.hxx>

class V3d_View;

//! Class for presentation of trihedron object.
class V3d_Trihedron : public Standard_Transient
{
  DEFINE_STANDARD_RTTIEXT(V3d_Trihedron, Standard_Transient)
public:

  //! Creates a default trihedron.
  Standard_EXPORT V3d_Trihedron();

  //! Destructor.
  Standard_EXPORT virtual ~V3d_Trihedron();

  //! Return TRUE if wireframe presentation is set; FALSE by default.
  bool IsWireframe() const { return myIsWireframe; }

  //! Switch wireframe / shaded trihedron.
  void SetWireframe (const Standard_Boolean theAsWireframe)
  {
    if (myIsWireframe != theAsWireframe)
    {
      invalidate();
      myIsWireframe = theAsWireframe;
    }
  }

  //! Return trihedron position.
  const Handle(Graphic3d_TransformPers) TransformPersistence() const { return myTransformPers; }

  //! Setup the corner to draw the trihedron.
  Standard_EXPORT void SetPosition (const Aspect_TypeOfTriedronPosition thePosition);

  //! Return scale factor.
  Standard_Real Scale() const { return myScale; }

  //! Setup the scale factor.
  Standard_EXPORT void SetScale (const Standard_Real theScale);

  //! Return size ratio factor.
  Standard_Real SizeRatio() const { return myRatio; }

  //! Setup the size ratio factor.
  Standard_EXPORT void SetSizeRatio (const Standard_Real theRatio);

  //! Return arrow diameter.
  Standard_Real ArrowDiameter() const { return myDiameter; }

  //! Setup the arrow diameter.
  Standard_EXPORT void SetArrowDiameter (const Standard_Real theDiam);

  //! Return number of facets for tessellation.
  Standard_Integer NbFacets() const { return myNbFacettes; }

  //! Setup the number of facets for tessellation.
  Standard_EXPORT void SetNbFacets (const Standard_Integer theNbFacets);

  //! Return text aspect for specified axis.
  //! @param[in] theAxis  axis index
  //! @return text aspect
  const Handle(Prs3d_TextAspect)& LabelAspect (V3d_TypeOfAxe theAxis) const { return myTextAspects[theAxis]; }

  //! Setup per-label color.
  Standard_EXPORT void SetLabelsColor (const Quantity_Color& theXColor,
                                       const Quantity_Color& theYColor,
                                       const Quantity_Color& theZColor);

  //! Setup color of text labels.
  Standard_EXPORT void SetLabelsColor (const Quantity_Color& theColor);

  //! Return shading aspect for specified axis.
  //! @param[in] theAxis  axis index
  //! @return shading aspect
  const Handle(Prs3d_ShadingAspect)& ArrowAspect (V3d_TypeOfAxe theAxis) const { return myArrowShadingAspects[theAxis]; }

  //! Setup colors of arrows.
  Standard_EXPORT void SetArrowsColor (const Quantity_Color& theXColor,
                                       const Quantity_Color& theYColor,
                                       const Quantity_Color& theZColor);

  //! Return shading aspect of origin sphere.
  const Handle(Prs3d_ShadingAspect)& OriginAspect() const { return mySphereShadingAspect; }

  //! Return axis text.
  //! @param[in] theAxis  axis index
  //! @return text of the label
  const TCollection_AsciiString& Label (V3d_TypeOfAxe theAxis) const { return myLabels[theAxis]; }

  //! Setup per-axis text.
  Standard_EXPORT void SetLabels (const TCollection_AsciiString& theX,
                                  const TCollection_AsciiString& theY,
                                  const TCollection_AsciiString& theZ);

  //! Display trihedron.
  void Display (const Handle(V3d_View)& theView)
  {
    Display (*theView);
  }

  //! Display trihedron.
  Standard_EXPORT void Display (const V3d_View& theView);

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

protected:

  //! Fills Graphic3d_Group.
  Standard_EXPORT void compute();

  //! Invalidates objects. It leads recompute.
  void invalidate()
  {
    myToCompute = Standard_True;
  }

  //! Sets offset 2d for transform persistence.
  Standard_EXPORT void setOffset2d();

private:

  //! Custom Graphic3d_Structure implementation.
  class TrihedronStructure;

protected:

  Handle(Prs3d_ShadingAspect)        mySphereShadingAspect;
  Handle(Prs3d_TextAspect)           myTextAspects[3];
  Handle(Prs3d_ShadingAspect)        myArrowShadingAspects[3];
  TCollection_AsciiString            myLabels[3];

  Handle(Graphic3d_Structure)        myStructure;
  Handle(Graphic3d_TransformPers)    myTransformPers;

  Standard_Real                      myScale;
  Standard_Real                      myRatio;
  Standard_Real                      myDiameter;
  Standard_Integer                   myNbFacettes;
  Standard_Boolean                   myIsWireframe;
  Standard_Boolean                   myToCompute;

};

DEFINE_STANDARD_HANDLE (V3d_Trihedron, Standard_Transient)

#endif